The price of second-hand CNC lathes varies greatly due to factors such as brand, model, year, configuration, accuracy, and usage status. The following are some common price ranges for second-hand CNC lathes of different brands and models for your reference: 1、 Domestic brands: Shenyang Machine Tool: -CAK4085n CNC horizontal lathe: The price is around 20000 to 30000 yuan -HTC3650 CNC lathe: Depending on different configurations and service life, the price ranges from 30000 to 50000 yuan Yunnan Machine Tool: -CK NC-40T CNC horizontal lathe, with a relatively affordable price, usually around 15000-30000 yuan Spark Machine Tool: -CK61100 CNC horizontal lathe: usually between 50000 and 80000 yuan -CK61125x10 meter CNC horizontal lathe: Due to its long processing length, the price is around 80000 to 120000 yuan Plison Machine Tool: -CKS61100Dx1.5m CNC horizontal lathe: The price is around 60000 to 90000 yuan -C61160Gx12m CNC horizontal lathe: 90% new price starts at about 6600 yuan/unit, and bulk purchase price can be as low as 6600 yuan/unit 2、 Taiwanese brands: -Taiwan oil engine: KVL-1200ATC CNC vertical lathe, the price is generally around 80000 to 150000 yuan -Taiwan Chengtai: Quasi new CNC lathes, usually priced between 100000 and 200000 yuan -Taiwan Qiaofu: GT-120D high-precision sloping car, priced at around 30000 to 50000 yuan 3、 Japanese brands: -Okuma, Japan: LB4000EXII-R used CNC milling and turning equipment, price negotiable, but generally the second-hand price of this high-end milling and turning equipment is over 200000 yuan -Imported O-M Itd CNC vertical lathe from Japan: The price needs to be negotiated, usually around 150000 to 300000 yuan 4、 German brand: -DMG: CTX310 eco milling composite, price negotiable, generally around 200000 to 300000 yuan -GROB five axis machine tool, price negotiable, second-hand price usually above 300000 yuan -Equal weight: -C5225Ex16-10 CNC vertical lathe: Price negotiable, generally around 100000-150000 yuan -DVT350x25-32 CNC vertical lathe: main motor power of 55, price negotiable, approximately 80000 to 120000 yuan

Choosing a suitable high-speed punching machine requires comprehensive consideration of the following aspects: 1、 Processing requirements Stamping part types: Different types of stamping parts have different requirements for the punching machine. For example, for small and medium-sized metal material punching parts, bending parts, or shallow drawing parts, an open punch press is more suitable. Its body opens on three sides, making it easy to operate and assemble molds, feeding machines, and automatic mold changing equipment to achieve intelligent production. It is also affordable; For large, medium, small or high-precision stamping products, it is advisable to use door type high-speed punching machines and two axis high-speed punching machines; For stamping processes such as straightening, calibration bending, and plastic surgery, high-speed punching machines with high strength and rigidity should be selected Precision requirements: If stamping parts require extremely high precision, such as precision components in industries such as electronics and automobiles, it is necessary to choose high-speed punching machines with high processing precision. The flatness of the worktable, the accuracy of the slider movement, and the parallelism of the upper and lower die seats should all reach a high level to ensure the dimensional and shape accuracy of the stamping parts Production batch size: The size of the production batch is also an important factor in choosing high-speed punching machines. If it is large-scale production, high-speed punching machines with high production efficiency and automation should be selected, such as punching machines equipped with automatic feeding devices and rapid mold changing systems, to improve production efficiency and reduce production costs; For small-scale production, relatively flexible and low-priced punching machines can be selected according to specific situations 2、 Equipment performance Tonnage: The tonnage of the selected high-speed punch must exceed the stamping pressure during actual stamping production, and the product load curve should be ensured to not exceed the allowable load curve of the high-speed punch as much as possible. When punching and calibrating bending parts, the maximum punching force should be less than 80% -90% of the tonnage; When deep drawing, the maximum drawing force shall not exceed 50% -60% of the tonnage; When shallow drawing, the maximum drawing force shall not exceed 70% -80% of the tonnage Travel and speed: The travel and speed should be determined according to the specific stamping process. When manually feeding materials, it is not advisable to use high-speed punching machines with too many strokes; When automatic stamping, it is advisable to choose high-speed punching machines with more strokes. When deep drawing, high-speed punching machines with too many strokes should not be used because the drawing is too fast and the material is not fully deformed in time, making the parts prone to cracking Mold height: The mold height of the punch press should match the height of the mold used, that is, the closing height of the mold should be between the maximum and minimum mold heights of the punch press. In addition, considering factors such as the shortening of the crankshaft after wear and the possibility of reducing the closing height of the mold during future mold repairs, the height of the stamping mold is generally taken to be close to the maximum mold mounting height of the punch press when designing the mold Workbench size: The workbench size needs to be determined based on the actual size of the installed mold. If the mold is large, the equipment workbench size can be increased according to the requirements 3、 Equipment quality and stability Brand and reputation: High speed punching machines from well-known brands are usually more guaranteed in terms of quality, performance, and after-sales service. You can learn about the reputation and market recognition of different brands by consulting industry information, consulting peers, and viewing user reviews, and choose brands with good reputations Manufacturing process: High quality high-speed punching machines adopt advanced manufacturing technology and high-precision processing equipment, which can ensure the accuracy and stability of the equipment. For example, the bed body is welded with high-strength cast iron or steel plate, and undergoes aging treatment to eliminate internal stress, which can effectively prevent deformation; Key components such as crankshafts, gears, connecting rods, etc. have undergone precision machining and heat treatment, resulting in high hardness and wear resistance Control system: Advanced control systems can achieve precise control of punch presses, improving machining accuracy and production efficiency. For example, numerical control systems have the advantages of simple programming, convenient operation, and high degree of automation, and can achieve complex functions such as multi coordinate linkage and high-speed high-precision machining 4、 Security Safety protection device: High speed punching machines should be equipped with comprehensive safety protection devices, such as photoelectric protection devices, manual operation buttons, safety light curtains, emergency stop buttons, etc., to prevent operators from being injured during operation Compliance with safety standards: Ensure that the selected high-speed punching machines comply with relevant national and industry safety standards, such as mechanical safety, electrical safety, noise control, etc., to ensure the safe and reliable operation of the equipment.

Here are some high-precision high-speed punching machine brands and models: 1、 Shuoer punch press C1N series: This series of punching machines has a precision of up to GB (JIS) level one and is widely used for stamping and forming hardware components such as electronics, communications, computers, household appliances, and transportation vehicles. It adopts a high-strength rigid body, and the motherboard is reinforced to effectively absorb vibration energy, ensuring the stability and safety of the equipment. All components undergo various processes such as stress relief to ensure stable product accuracy. Gears, crankshafts, and other components are all precision ground and processed. The main components are produced using high-end CNC machining equipment imported from abroad, ensuring high precision of the entire machine 2、 Xinshunkang XSK-H30T： It is a pneumatic high-speed punching machine with precise characteristics, suitable for stamping and forming in industries such as automobiles, mobile phones, computers, and hardware appliances. The slider drive mechanism of the crankshaft punch press is adopted, and the slider movement mode is single action. The layout is vertical, with a throat depth of 520 * 120mm, external dimensions of 2500 * 1200 * 1500mm, and a weight of 6300kg 3、 Gu'an Li C1N series: Similar to Shuoer's C1N series, it has a high rigidity frame design, uses high-quality steel plate welding, and undergoes shot blasting and internal stress elimination treatment to ensure the accuracy of the punching machine. It can be widely used in stamping processing of hardware components and other parts D2N series closed door hyperbolic axis precision steel frame punching machine: This series of punching machines has high precision, high productivity and production elasticity, which can ensure the production of high-precision stamping products, achieve low noise, low vibration, and high operational convenience. It adopts high torque wet clutch brake, fixed lock six sided long guide, high rigidity body and multifunctional computer control system, suitable for stamping processing of small precision parts such as precision electronics, communication, computers, household appliances, automotive parts, and Mazda stator and rotor GT series elbow link ultra high speed and ultra high precision punch press: adopting elbow link mechanism, it can achieve the minimum thermal displacement, minimum chip jumping and precision pressing effect, ensuring the high precision of the punch press, and can meet the stamping processing of small precision parts with extremely high precision requirements 4、 German imported brand EMAG: Its punching machines are known for their high precision and advanced technology. For example, some of its high-speed punching machines adopt advanced control systems and precise mechanical transmission structures, which can achieve micrometer level punching accuracy. They are commonly used in fields such as automotive and aerospace that require extremely high precision for components DMG Demage: As a globally renowned machine tool brand, its precision high-speed punching machines integrate advanced CNC technology and high-precision mechanical manufacturing processes. The repeated positioning accuracy of its punch press is high, which can maintain stable accuracy during high-speed stamping process and is suitable for the processing of precision components such as electronics and medical equipment Schuler: With rich experience in punch manufacturing and advanced technology, its high-speed punch products perform well in precision control. For example, some large high-speed punching machine models use high-precision guide rails and advanced hydraulic systems, which can achieve high-precision and high-efficiency stamping processing, and are widely used in industries such as automotive manufacturing and metal processing

The accuracy of second-hand high-speed punching machines can be evaluated from the following aspects: 1. Check the flatness of the workbench Tool usage: Use a level to measure the flatness of the workbench. Place the spirit level at different positions on the workbench and observe the position of bubbles in the spirit level to determine whether the surface of the workbench is flat. Accuracy standard: For high-precision high-speed punching machines, the flatness error of the worktable is generally required to be within 0.05-0.1mm. If the flatness error is too large, it will cause unstable mold installation during the stamping process, thereby affecting the quality of the stamped parts. 2. Evaluation of slider motion accuracy Straightness detection: Laser interferometers can be used to detect the straightness of slider motion. Laser interferometers can accurately measure whether the slider moves along a straight trajectory during its up and down motion. Under normal circumstances, the straightness error of slider motion should be controlled within a very small range, such as within ± 0.03mm/300mm stroke. Verticality check: Use a dial gauge to measure the verticality between the slider movement and the worktable plane. Fix the dial gauge on the workbench, with the gauge head in contact with the side of the slider, causing the slider to move up and down, and observe the swing range of the dial gauge pointer. Generally, the verticality error is required to be around ± 0.05mm/300mm stroke. 3. Measurement of parallelism between upper and lower mold seats Measurement method: Attach the dial gauge to the slider so that the gauge head contacts the surface of the mold seat, and then let the slider drive the dial gauge to move across the entire mold seat surface, recording the changes in the dial gauge reading. Then perform the same operation on the lower mold base. Accuracy requirement: The parallelism error of the upper and lower mold seats is very important for ensuring stamping accuracy, usually requiring a parallelism error within 0.05-0.1mm. If the parallelism does not meet the standard, it will cause uneven force on the mold during stamping, shorten the mold life, and also affect the dimensional and shape accuracy of the stamped parts. 4. Stamping accuracy testing Sample processing: Select appropriate materials and molds for sample stamping. For example, using metal sheets with uniform thickness, standard geometric shapes such as circles, squares, etc. can be stamped out through molds. Dimensional and shape accuracy evaluation: Use tools such as calipers, micrometers, and coordinate measuring instruments to measure the stamped specimens. Check whether the dimensions of the stamped parts meet the design requirements, such as diameter, side length, thickness, etc. The deviation of dimensions should be controlled within a certain range. For precision stamped parts, the dimensional deviation may be required to be within ± 0.05mm. At the same time, observe the shape accuracy of the stamped parts, such as roundness, flatness, perpendicularity, etc., to evaluate the accuracy performance of the punch press in the actual stamping process. 5. Positioning accuracy detection Positioning device inspection: Check the positioning device of the punch press, such as the positioning accuracy of the feeding mechanism. For high-speed punch presses with automatic feeding function, check the positioning accuracy of the feeding length and width. Accuracy measurement: Measure the deviation between the actual position of the feed and the set position through trial feeding and actual stamping operations. Generally, the feeding positioning accuracy is required to be within ± 0.1mm to ensure that the material can be accurately fed into the mold for stamping, otherwise it will cause positional deviation and dimensional error of the stamped parts. 6. Repeat positioning accuracy test Multiple stamping tests: Perform multiple identical stamping operations, such as continuously stamping 10-20 identical specimens. Data analysis: Use measuring tools to measure the same parts of each specimen and compare the changes in specimen size and shape after each stamping. Punching machines with high precision in repeated positioning should maintain high consistency in the size and shape accuracy of the stamped parts during multiple stamping processes, and the dimensional deviation should be controlled within a small range, such as ± 0.03mm.

When purchasing a second-hand high-speed punch press, it is important to pay attention to the following aspects: 1、 Equipment condition Appearance inspection: Check the overall appearance of the punch press for obvious signs of collision, deformation, rust, and peeling paint, which may affect the performance and service life of the equipment Wear level: Check the wear of key components of the punch press, such as sliders, guide rails, crankshafts, etc., which can be determined by measuring clearances, observing surface smoothness, and other methods. Excessive wear may lead to a decrease in equipment accuracy and affect machining quality Accuracy testing: Conducting accuracy testing is an important step in evaluating the value of second-hand high-speed punching machines. Professional testing tools can be used to check whether the accuracy indicators such as the flatness of the worktable, the straightness of the slider movement, and the parallelism of the upper and lower die seats of the punching machine meet the requirements. This is particularly crucial for users with high-precision processing needs Operation status: The seller is required to conduct a trial run of the equipment, observe whether there are any abnormal noises, vibrations, heating, etc. during the operation of the punch press, check whether the clutch, brake, feeding mechanism and other components are working properly, and whether the operation buttons and switches are sensitive and reliable 2、 Brand model and technical parameters Brand and reputation: Priority should be given to second-hand high-speed punching machines from well-known brands, such as Yamazaki Mazak and Nakamura Shinroku from Japan, Siemens and Bosch from Germany, etc. These brands usually have high quality and reliability, and their equipment is more guaranteed in terms of technology, performance, and stability. The after-sales service network is also relatively complete Model and specifications: Based on one's own production needs, choose the appropriate model and specification of punch press, taking into account whether the technical parameters such as nominal pressure, stroke, number of strokes, worktable size, and mold height of the punch press meet the requirements of the size, shape, material, and production batch of the processed parts 3、 Usage history and maintenance records Service life: Understand the service life of the punch press. Generally speaking, equipment with a shorter service life is relatively new, with better performance and accuracy, but the price will also be relatively high. Equipment with longer service life may have more wear and potential failures, requiring more careful inspection and evaluation Usage frequency: Inquire about the usage frequency of the equipment. High frequency use of punch presses may accelerate component wear and reduce the service life of the equipment. For equipment with high usage frequency, it is important to focus on checking the wear of its key components Maintenance records: Check the maintenance records of the equipment, including the time of regular maintenance, maintenance content, replaced parts, and other information. Good maintenance can extend the service life of the equipment and reduce the occurrence of failures. If the equipment has complete maintenance records and standardized maintenance, its performance and reliability are relatively more guaranteed 4、 Security performance Safety devices: Check whether the punching machine is equipped with complete safety devices, such as photoelectric protection devices, emergency stop buttons, safety protection doors, etc., to ensure that these safety devices can work properly and ensure the personal safety of operators Compliance with standards: Confirm whether the punching machine complies with local safety production standards and relevant laws and regulations, to avoid purchasing equipment that does not meet safety standards, which may result in the inability to use it normally or face safety risks in the later stage 5、 Price and cost-effectiveness Market price research: Before purchasing, conduct thorough research on the market prices of second-hand high-speed punching machines to understand the approximate price range of different brands, models, years, and configurations of punching machines, in order to determine whether the seller's quotation is reasonable. You can refer to professional second-hand equipment trading platforms, industry forums, auctions, and other channels for price information Cost effectiveness evaluation: In addition to price factors, it is also necessary to comprehensively consider factors such as equipment performance, quality, service life, and maintenance to evaluate its cost-effectiveness. Do not choose equipment with poor performance or potential problems just because it is cheap, nor blindly pursue high-end brands and high performance while ignoring price factors 6、 Purchase channels and contracts Reliable purchasing channels: Choose legitimate and reliable purchasing channels, such as professional second-hand equipment dealers, auctions, large second-hand equipment trading markets, etc. These channels usually have strict equipment audits and quality assurance systems, which can provide certain after-sales support and avoid purchasing from individual sellers or informal channels to prevent fraud or purchasing equipment from unknown sources Clear contract agreement: When purchasing second-hand high-speed punching machines, it is necessary to sign a detailed and clear contract with the seller, which should include the brand, model, specifications, price, delivery time, quality assurance, after-sales service and other terms of the equipment, clarifying the rights and obligations of both parties to avoid disputes in the later stage

The price of second-hand high-speed punching machines varies due to various factors, and the following is the approximate price range for common tonnage second-hand high-speed punching machines: 25 tons: Generally around 80% new, the price ranges from 100000 to 120000 yuan 60 tons: 95% new, with a price of about 100000 yuan 110 tons: The price of over 90% new is around 90000 to 100000 yuan 200 tons: 90% new, with a price of approximately 500000 to 600000 yuan

The after-sales service of Jinfeng punch mainly includes the following aspects: 1、 Repair service Fault diagnosis and repair: A professional after-sales team can quickly and accurately diagnose various faults that occur in Jinfeng punching machines and repair them in a timely manner. For example, when the clutch of a punch press malfunctions, maintenance personnel can quickly determine whether it is due to wear of the clutch friction plate, solenoid valve failure, or other component problems through professional tools and experience, and carry out corresponding replacement or repair Regular maintenance and upkeep: Provide regular maintenance services, including comprehensive inspection, cleaning, lubrication, adjustment, and calibration of the mechanical components, electrical system, lubrication system, cooling system, etc. of the punch press, to ensure that the performance and accuracy of the punch press are always maintained in the best condition. Such as checking the belt tension of the punch press every month and changing the lubricating oil every quarter 2、 Accessories supply Original accessories: We provide authentic accessories produced by the original factory, which have strict guarantees in quality, accuracy, and compatibility, ensuring the normal operation and service life of the punch press. For example, key components such as crankshafts, connecting rods, and sliders of Jinfeng punch presses can better utilize the performance of the punch press by using original accessories Customization of accessories: Based on the special needs of customers, customized non-standard accessories are provided to meet their personalized needs under different production processes and processing requirements 3、 Technical support Operation training: Provide customers with operation training for punching machines, so that operators are familiar with the various functions, operation methods, safety precautions, etc. of punching machines, ensuring that they can operate the punching machines correctly and safely, improve production efficiency and product quality, and also extend the service life of punching machines Technical consultation: Customers can consult the after-sales service team at any time if they encounter any technical problems during the use of the punch press. The after-sales personnel will provide detailed answers and technical advice to customers based on their professional knowledge and rich experience, helping them solve problems 4、 Equipment renovation and upgrade Performance improvement transformation: Based on the production needs of customers and changes in market development, Jinfeng punch press will undergo performance improvement transformation, such as increasing the punching speed, increasing the punching tonnage, improving the degree of automation, etc., so that the punch press can better adapt to new production tasks and higher production requirements Equipment Upgrade: Provide customers with equipment upgrade services, including control system upgrades, safety protection device upgrades, etc., to enhance the intelligence and safety of punching machines, improve production efficiency, and reduce production costs 5、 After sales guarantee Warranty commitment: We provide a certain period of quality assurance for newly sold Jinfeng punch presses or punch presses that have been repaired and maintained. During the warranty period, if the punch press malfunctions or is damaged due to quality issues, the after-sales service team will provide free repair or replacement of parts for customers Response time guarantee: Establish a rapid response mechanism to ensure that customers can respond to after-sales service needs in the shortest possible time and arrange for professional personnel to arrive on site for repair or processing. For customers within Dongguan, some repair companies can promise to arrive at the site within 4 hours

When purchasing a second-hand Jinfeng punch press, the following key factors should be noted: 1. Equipment performance testing Accuracy check -Focus on checking the perpendicularity between the slider and the workbench, the flatness of the workbench, and the accuracy of the slider stroke. Professional tools such as a dial gauge can be used for measurement. Under normal circumstances, the perpendicularity error between the slider and the worktable should be controlled within ± 0.1mm/300mm stroke, and the flatness error of the worktable should be less than 0.1mm. These precision indicators directly affect the quality of stamped parts. -Check if the stamping accuracy of the punch press is stable. By testing some standard specimens, observe whether the dimensional accuracy and shape accuracy of the stamped parts meet the requirements, and whether there are significant fluctuations in accuracy during the continuous stamping process. Performance evaluation -Conduct an air transfer test and pay attention to the sound of the punching machine during operation. Under normal circumstances, the sound should be smooth and regular. If there are abnormal friction, impact, or vibration sounds, it may indicate wear, looseness, or other faults in the internal components. -Check the movement speed and smoothness of the slider. The movement speed of the slider should comply with the nominal parameters of the equipment, and it should move smoothly throughout the entire stroke without any lag or jumping phenomenon. Meanwhile, observing the braking performance of the punch press, a good braking system should be able to stop the slider from moving in a short period of time. Stress testing -If conditions permit, conduct a pressure test on the punching machine to ensure that it can achieve the nominal punching tonnage. Pressure sensors and other devices can be used to measure the actual stamping pressure. Insufficient stamping pressure may prevent the completion of stamping work on thicker or harder materials. 2. Equipment quality inspection Appearance inspection -Carefully inspect the punch press body for any obvious deformation, cracks, rust, or paint peeling. The integrity of the body structure is crucial for the stability and service life of the punch press, and serious appearance issues may indicate that the equipment has been affected by improper use or harsh environments. -Check if the protective devices of the punch press, such as guardrails and light curtains, are intact. Protective devices are important facilities for ensuring the safety of operators, and damaged protective devices need to be repaired or replaced in a timely manner. Component inspection -Focus on inspecting the wear of key components such as crankshafts, connecting rods, sliders, and guide rails. For example, rail wear can cause the slider to move unevenly, increasing maintenance costs. You can manually move the slider to feel the smoothness of its movement and determine the degree of wear on the guide rail. At the same time, check the working status of the clutch and brake, which are related to the start, stop, and safe operation of the punch press. 3. Equipment history investigation Service life and frequency -Understanding the service life of punching machines, generally speaking, punching machines with shorter service life have relatively better performance and accuracy. At the same time, inquire about the frequency of device usage, such as the number of stamping operations per year. If the device is used too frequently, it may lead to increased wear and tear on critical components. Usually, the economic service life of a punch press is around 10-15 years, but the specific situation also depends on factors such as equipment brand and maintenance. Maintenance and upkeep records -Require the seller to provide maintenance records of the equipment, including the time and content of regular maintenance, as well as information on the main components replaced. Good maintenance can extend the service life of equipment and improve its reliability. If the equipment lacks regular maintenance, it may hide various potential faults. Repair history -Inquire whether the equipment has experienced any major malfunctions, such as crankshaft damage, electrical system failures, etc. Understand the cause of the malfunction, repair time, and the recovery situation after repair. If the equipment has frequent maintenance records, especially those involving critical components, it may affect the performance and stability of the equipment. 4. Equipment configuration and accessory inspection Standard configuration integrity -Check if the standard configuration of the punch press is complete, including motor, control cabinet, lubrication system, cooling system, etc. Ensure that these configuration functions are functioning properly, for example, the lubrication system should be able to provide lubricating oil to critical components, and the cooling system should effectively reduce the temperature of the equipment during operation. -Check if the mold installation system of the punch press is intact, including the mold clamping device, positioning device, etc. The accuracy and reliability of the mold installation system directly affect the quality of stamped parts and the service life of the mold. Attachment situation -Ask if the equipment comes with any special accessories, such as automatic feeding devices, waste collection devices, etc. These accessories can improve the production efficiency and processing convenience of the punch press, and second-hand punch presses with practical accessories have higher value. 5. Price and after-sales guarantee Price evaluation -Before purchasing, conduct research on the prices of punching machines of the same brand, model, and similar color in the market. Consider factors such as device performance, service life, and configuration to evaluate whether the price quoted by the seller is reasonable. To avoid losses due to excessively high prices, while also being alert to potential issues with low-priced equipment. after-sale service -Understand whether the seller provides after-sales service, such as the warranty period, warranty scope, and repair response time of the equipment. For second-hand equipment, some sellers may provide a certain period of warranty service, which can provide buyers with certain protection. At the same time, ask the seller if they can provide technical support, including equipment operation training, troubleshooting guidance, etc.

Here are some common channels for purchasing second-hand Jinfeng punch presses: 1、 Professional second-hand machine tool equipment market There is a wide variety of equipment in the market, which can be used to compare second-hand Jinfeng punching machines of different specifications, models, and colors, with a large selection space; There are professional evaluators and testers who can provide buyers with equipment condition assessments and reference opinions, helping them make more accurate purchasing decisions. 2、 Second hand equipment trading platform Online platform: Processing Network: Information updates quickly, with a large number of individuals or companies publishing information on the sale of second-hand Jinfeng punching machines Alibaba: Sellers are mostly professional machine tool management departments or distributors, and the quality of equipment and after-sales service are relatively guaranteed 58.com: Wide coverage, abundant local second-hand equipment resources, on-site inspection of equipment, saving transportation costs and time Offline platform: Regular second-hand equipment auctions held in various regions, where the second-hand Jinfeng punching machines are usually screened and appraised, and the sources are relatively reliable. During the auction process, buyers have the opportunity to purchase the equipment at a reasonable price. 3、 Machine tool equipment dealer Distributors generally have a professional after-sales service team that can provide a series of after-sales services such as installation, commissioning, maintenance, etc. for the purchased second-hand Jinfeng punch press. They can also provide reasonable price references and purchasing suggestions for buyers based on their understanding of the market. 4、 Recycling company The equipment of recycling companies comes from a wide range of sources, and there may be some second-hand Jinfeng punching machines that are recycled due to enterprise closures, upgrades, and other reasons, with relatively low prices. The recycling company will also conduct preliminary testing and sorting of the equipment to ensure its basic performance. 5、 Factory direct purchase Advantages: The usage and maintenance records of the equipment are relatively clear, allowing for a direct understanding of the historical operation and malfunction of the equipment. The purchase price may be more favorable than buying through intermediaries, while also reducing the risk of intermediaries. Method: You can search for factories with intentions to sell second-hand Jinfeng punching machines through industry network introductions, online searches, etc., such as factories that need to deal with old equipment due to industry transfer, enterprise transformation, or equipment updates.

The price of second-hand Jinfeng punching machines varies due to various factors, and the following is a rough price range: About 60 tons: Generally, the price for products over 90% new is around 80000 to 90000 yuan; About 80 tons: 8-9% of the better condition is new, with a price of approximately 80000 to 100000 yuan; About 110 tons: usually priced around 130000 yuan; About 160 tons: the price is mostly around 150000 to 200000 yuan; About 200 tons: the price is approximately 200000 to 250000 yuan; 250 tons and above: The price is relatively high, usually above 250000 yuan.

The second-hand Jinfeng punching machine has the following characteristics: 1、 Advantages Reliable brand quality: As a well-known forging machinery manufacturer, Jinfeng's products are widely recognized for their quality, precision, and durability. In 1994, they passed the ISO9001 international quality certification of Yarsley in the UK, providing relatively better quality assurance for second-hand equipment High machining accuracy: Advanced CNC technology and precision manufacturing processes are used to achieve machining accuracy of up to 0.01 millimeters, ensuring product quality and consistency, reducing scrap rates, and meeting the high precision requirements of machining needs Significant production efficiency: With fast processing speed and advanced automation control system, it can achieve functions such as automatic loading and unloading, automatic tool changing, etc., which can greatly improve production efficiency, save time and labor costs Strong equipment stability: Made with high-quality materials and subjected to strict quality inspection and testing, it can maintain stable performance even during long and high-intensity processing, reduce downtime due to malfunctions, and improve production efficiency Good operational flexibility: Mold replacement is convenient. By changing different molds, products of different shapes and sizes can be processed, and it can also be used for processing various materials. It has a wide range of applications and can meet the diverse needs of customers Superior safety performance: adopting advanced safety control system, equipped with various safety protection devices such as photoelectric protection, capacitive protection, and air curtain protection, which can effectively prevent operators from misoperation and accidents, ensure the safety of operators' lives, and reduce safety risks in the production process 2、 Disadvantages or precautions Equipment condition varies: Due to different usage histories and maintenance situations of second-hand equipment, there may be significant differences in their equipment condition. There may be issues such as appearance wear, aging of mechanical components, and electrical system failures that require careful inspection and evaluation Relatively high price: Although it is a second-hand equipment, the brand value and performance advantages of Jinfeng punch press make its price relatively higher than ordinary second-hand punch presses. It is necessary to consider whether it is worth buying based on one's own budget and actual needs. After sales service is limited: The original manufacturers of second-hand equipment generally no longer provide complete after-sales service, and later repairs and maintenance may rely on professional repair personnel or third-party service providers, and may require additional payment, which increases the cost of equipment use and maintenance difficulty. Noise issue: Some second-hand Jinfeng punching machines may produce significant noise during operation, affecting the working environment and the physical and mental health of operators. Corresponding noise reduction measures need to be taken, such as adding spring plates, adding sound-absorbing screens, and setting up separate punching rooms

Mainly maintain and upkeep second-hand punching machines from the following aspects: 1. Maintenance of mechanical components Body and Workbench -Regularly clean the surface of the machine body and workbench to remove impurities such as dust, oil, and metal shavings. Clean cloths and appropriate cleaning agents can be used for wiping. Keeping the body and workbench clean helps prevent impurities from entering the interior of mechanical components, reducing wear and corrosion. -Check if the connection between the body and the workbench is loose. Regularly use tools such as wrenches to check and tighten bolts and nuts to ensure a secure connection. Loose connections may cause vibration and displacement of the punch during operation, affecting stamping accuracy. Sliding block and guide rail -The slider and guide rail are key moving parts of the punch press and require special maintenance. Regularly apply an appropriate amount of lubricating oil on the surface of the guide rail, and it is recommended to use high-quality guide rail lubricating oil. Lubricating oil can reduce friction between the slider and the guide rail, reduce wear, and also have a certain rust prevention effect. -Check if the gap between the slider and the guide rail is normal. If the gap is too large, it will affect the motion accuracy and stability of the slider. Tools such as feeler gauges can be used for measurement, and the gap should generally be controlled within the specified range, such as less than 0.1mm. If the gap is too large, it is necessary to adjust or replace worn parts in a timely manner. Crankshaft and connecting rod -The crankshaft and connecting rod are important components for transmitting power. Regularly inspect the wear of the crankshaft and connecting rod, and observe whether there are scratches, wear marks, or fatigue cracks on the surface. Testing can be carried out using equipment such as flaw detectors. For slightly worn parts, grinding repair can be carried out; If there is severe wear or cracking, the components should be replaced in a timely manner. -Keep the lubricating oil in the crankcase clean and sufficient. According to the equipment manual, regularly replace the lubricating oil, usually every 3-6 months. Clean lubricating oil can effectively lubricate the bearings and other parts of the crankshaft and connecting rod, reducing wear and heat generation. 2. Electrical system maintenance Motor and control cabinet -Regularly clean the dust on the surface of the motor and control cabinet. Dust accumulation may cause poor heat dissipation of electrical components, leading to malfunctions. You can use a hair dryer or soft bristled brush for cleaning. -Check if the wiring of the motor is secure and if there are any signs of looseness, burning, or damage. At the same time, check the insulation performance of the motor and use an insulation resistance meter to measure the insulation resistance of the motor winding, which should generally not be lower than 0.5M Ω. For the control cabinet, check the working status of internal electrical components such as relays, contactors, and circuit breakers to ensure that they are properly connected and disconnected. Sensors and buttons -The sensors of the punch press, such as limit sensors, pressure sensors, etc., are crucial for the safety and normal operation of the equipment. Regularly check the functionality of the sensor to ensure that it can accurately detect signals. You can use tools such as a multimeter to check if the output signal of the sensor is normal. -Check the flexibility and reliability of operation buttons (such as start, stop, emergency stop buttons, etc.). The button should be able to be pressed and popped up normally, with good contact. If the button is found to be stuck or has poor contact, it should be replaced in a timely manner. 3. Maintenance of lubrication system Lubrication method and oil quality selection -Understand the lubrication methods of punching machines, commonly including manual lubrication and automatic lubrication. For manually lubricated punching machines, it is necessary to strictly follow the specified time and location for lubrication, and use appropriate lubricating oil. For automatic lubrication systems, regularly check whether components such as oil pumps, oil pipes, and oil nozzles are working properly. -Choose the appropriate lubricating oil according to the working environment and requirements of the punch press. Generally speaking, lubricating oil with good wear resistance, oxidation resistance, and rust prevention properties should be selected. Punching machines working in high-temperature environments can choose high-temperature resistant lubricating oil; Choose lubricating oil with anti-corrosion properties in environments with corrosion risks. Lubrication cycle and oil level inspection -Determine a reasonable lubrication cycle. In general, a small amount of lubrication should be applied to key parts (such as slider guide rails, crankshaft bearings, etc.) before starting up each day; Comprehensive lubrication should be carried out once a week or every two weeks, and the specific cycle can be adjusted appropriately according to the frequency and intensity of equipment use. -Regularly check the oil level of the lubricating oil tank to ensure that the oil level is within the specified range. Insufficient oil can lead to poor lubrication and accelerate component wear; Excessive oil volume may cause leaks and waste. The oil level can be checked through an oil level gauge or observation hole. 4. Mold installation and maintenance Mold Installation Specification -Before installing the mold, ensure that the punch slide is at the top dead center position and clean the installation table of the mold and punch. According to the installation instructions of the mold, correctly install the mold on the punch worktable and fix it with appropriate bolts and locating pins. During the installation process, attention should be paid to the direction and position of the mold to ensure that it matches the punching action of the punch press. -Adjust the closing height of the mold to match the stroke of the punch press. Usually achieved by adjusting the height of the slider, which can be fine tuned using tools such as adjusting screws. Inappropriate closure height can lead to mold damage or substandard quality of stamped parts. Mold maintenance and replacement -Regularly inspect the wear of the mold, including the cutting edge, cavity, and other parts. For worn cutting edges, they can be repaired through grinding; If the mold cavity is severely deformed or damaged, the mold should be replaced in a timely manner. After stamping a certain number of workpieces (such as every 1000-5000 pieces, depending on the situation of the mold and workpiece), clean and maintain the mold to remove metal shavings and oil stains on the surface of the mold. 5. Maintenance of safety devices Protective fence and light curtain -Check the integrity and firmness of the protective fence. The railing of the protective fence should be free of deformation or breakage, and the connection parts should be firm and reliable. Regularly clean the surface of the protective fence, remove oil and dust, and maintain clear visibility. For the light curtain safety device, check whether the light emitting and receiving components of the light curtain are working properly, and whether there is any obstruction or damage. It is possible to test whether the punch can immediately stop running by blocking the light curtain to ensure the sensitivity and reliability of the light curtain. Emergency stop button -Regularly check the function of the emergency stop button. Press the emergency stop button and check if the punch can quickly stop running, and if the control system of the punch can reset normally after the button is pressed. Ensure that the position of the emergency stop button is easily accessible to operators in emergency situations, and there are no obstacles around it.