Used FANUC α-D21MiB PLUS Drill Tap Center

Author:JINYI           Date:2026-06-08

Fanuc α-D21 MiB PLUS Tapping machineThe used FANUC α-D21MiB PLUS is a premier high-speed drill tap center designed to deliver exceptional versatility and precision across multiple manufacturing sectors. Equipped with a high-performance 24,000 RPM spindle, a 21-station tool magazine, and a highly rigid 500x400x330mm machining envelope, this 2022 model is engineered for rapid material removal and fine surface finishing. It is an ideal solution for factories operating in the automotive, aerospace, medical device, electronics, and mold making industries. Currently located under stock number 68139, this machine is in stock, ready for immediate inspection, and offers a strategic opportunity to bypass long OEM lead times while securing a highly capable production asset.

Key Specifications and Production Readiness

Understanding the technical parameters of the FANUC α-D21MiB PLUS is crucial for determining its fit within your existing production lines. Every specification on this machine is engineered to reduce cycle times and improve part quality.

Brand & Model FANUC α-D21MiB PLUS
Manufacturing Year 2022
CNC System FANUC 31i-MODEL B
Spindle Speed 24,000 RPM
X/Y/Z Axis Travel 500 x 400 x 330 mm
Table Size 650 x 400 mm
Table Load Capacity 300 kg
Tool Magazine Capacity 21 Stations
Positioning Accuracy ±0.006 mm
Repeatability ±0.004 mm
Machine Dimensions 1615 x 2040 x 2236 mm

FANUC 31i-MODEL B CNC System

The machine is driven by the industry-standard FANUC 31i-MODEL B control. This system is renowned for its ultra-fast block processing times and advanced look-ahead capabilities. In real production, this means the machine can execute complex 3D toolpaths without hesitation, preventing dwell marks on the workpiece and ensuring superior surface finishes, which is highly critical for mold inserts and aerospace components.

24,000 RPM High-Speed Spindle

While standard drill tap centers often feature 10,000 or 14,000 RPM spindles, this specific model is equipped with a 24,000 RPM spindle. This high rotational speed is essential for micro-machining, allowing the use of very small diameter end mills and drills without sacrificing feed rates. It ensures optimal chip evacuation and prevents tool breakage when machining aluminum, copper, or titanium.

Machining Envelope and Tooling Capacity

The 500x400x330mm X/Y/Z travel, combined with a 650x400mm table capable of supporting 300 kg, provides a highly versatile work area. It is perfectly sized for mounting multiple pneumatic vises, 4th-axis rotary tables, or complex custom fixtures. The 21-station tool magazine utilizes a rapid turret-style indexing mechanism, drastically reducing chip-to-chip times. In high-volume production runs, saving even a fraction of a second per tool change compounds into hours of saved production time per week.

Precision and Repeatability

With a positioning accuracy of ±0.006 mm and a repeatability of ±0.004 mm, this machine guarantees tight tolerances part after part. This level of precision ensures high Cpk values in mass production, directly reducing scrap rates and eliminating the need for secondary manual finishing operations.

Frequently Asked Questions

Is the used FANUC α-D21MiB PLUS currently in stock and available for inspection?
Yes, this specific machine (Stock #68139) is currently in stock at our facility. It is fully powered and available now for comprehensive on-site inspection and test cutting by your engineering team.
What throughput requirements is the 24,000 RPM spindle best suited for?
The 24,000 RPM spindle is engineered for high-speed, high-volume throughput requirementss. It is particularly suited for applications requiring small diameter cutting tools, such as 3C electronics housings, medical devices, and fine mold electrodes, allowing for aggressive feed rates while maintaining excellent surface finishes.
Can this machine handle mold making as well as high-volume electronics parts?
Absolutely. The machine's "one machine, many applications" flexibility is one of its core strengths. The FANUC 31i-MODEL B control handles the complex 3D toolpaths required for mold making, while the rapid 21-station tool changer and fast axis movements support the short cycle times demanded by high-volume electronics manufacturing.
What should I check during the on-site inspection ?
During your inspection, you should prioritize checking the spindle runout at maximum RPM, verifying the smoothness of the 21-station tool change mechanism, inspecting the X/Y/Z ballscrews for backlash, and confirming the machine's geometry to ensure it still meets the ±0.004 mm repeatability specification.
Does the FANUC 31i-MODEL B control support complex 3D contouring?
Yes, the FANUC 31i-MODEL B is a highly advanced CNC system that features rapid block processing and look-ahead capabilities. This ensures smooth and precise execution of complex 3D contouring programs, preventing dwell marks and ensuring high-quality surface finishes on intricate parts.

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