FANUC Robodrill α-D21MiB5 Plus
Image: fanuc.co.jp, FANUC
Key Specifications
X Travel
Y Travel
Z Travel
Max Spindle
Tool Capacity
control
How much does the FANUC Robodrill α-D21MiB5 Plus cost?
Estimated price range
Our best estimate for a vertical machining centers (vmc) in this class — not a quote from FANUC. Configuration moves it a long way.
Overview
The FANUC Robodrill α-D21MiB5 Plus brings together two things multi-face machining asks for: 21 tools and a 5-axis capable control, the FANUC Series 31i-B5 Plus. Its travels are 500 mm (19.7 in) in X, 400 mm (15.7 in) in Y and 330 mm (13 in) in Z.
Each of the two is available on its own. The Robodrill α-D21MiB has the 21 tools with the Series 31i-B Plus control, and the Robodrill α-D14MiB5 has the 31i-B5 Plus control with 14 tools. The argument for taking both is simple: reaching several faces of a part in one clamping lengthens the tool list, because the drills, taps and chamfer tools for every face have to be on the machine at the same time.
The figure to watch is Z. At 330 mm it is the shorter of the strokes listed at this size, and a rotary table with its fixture sits between the machine table and the part. The Robodrill α-D14MiB5ADV has 400 mm (15.7 in) of Z on the same control, with 14 tools. No rotary axis travel appears in the table, so the rotary equipment should be confirmed with FANUC. The standard spindle is 10,000 rpm; 12,000 rpm tapping / high-acceleration and 24,000 rpm high-speed spindles are options.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 500 mm (19.7 in) |
| Y-Axis Travel | 400 mm (15.7 in) |
| Z-Axis Travel | 330 mm (13 in) |
| Max Spindle Speed | 10,000 rpm (12,000 rpm tapping / high-acceleration and 24,000 rpm high-speed spindles optional) |
| Tool Capacity | 21 tools |
| CNC Control | FANUC Series 31i-B5 Plus |
| Axes | 5-axis capable control (Series 31i-B5 Plus) |
Specifications sourced from fanuc.co.jp — verified 2026-10-03
Strengths & Limitations
Strengths
- 21 tools together with the 5-axis capable FANUC Series 31i-B5 Plus control
- 50% more tools than the 14 of the Robodrill α-D14MiB5, with identical travels and control
- 500 mm (19.7 in) of X and 400 mm (15.7 in) of Y travel
- 10,000 rpm standard spindle, with a 24,000 rpm high-speed spindle on the options list
Limitations
- 330 mm (13 in) of Z has to hold rotary unit, fixture, part and tool; the Robodrill α-D14MiB5ADV has 400 mm (15.7 in)
- The table gives no rotary axis travel, speed or load, so the rotary side of the machine cannot be judged from the listed figures
- Spindles above 10,000 rpm are optional
Best For
Frequently Asked Questions
01
The control. The Robodrill α-D21MiB lists the FANUC Series 31i-B Plus, and this model lists the Series 31i-B5 Plus, which the table describes as 5-axis capable. The 21 tools and the 500 x 400 x 330 mm (19.7 x 15.7 x 13 in) travels are the same.
02
It depends on the stack height. The 330 mm (13 in) stroke has to cover the rotary unit, the fixture, the part and the tool. The table lists no rotary unit dimensions to work this out from, so get the unit's height from the supplier. The Robodrill α-D14MiB5ADV has 400 mm (15.7 in) of Z with the same control and 14 tools.
Videos
Methods Machine Tools, Inc
clarkmachinery
clarkmachinery
Surplex
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