FANUC Robodrill α-D21LiB Plus
Key Specifications
X Travel
Y Travel
Z Travel
Max Spindle
Tool Capacity
max table load
How much does the FANUC Robodrill α-D21LiB 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-D21LiB Plus is a 3-axis vertical machining center with 21 tools and travels of 700 x 400 x 330 mm (27.6 x 15.7 x 13 in). In FANUC's table it differs from the Robodrill α-D14LiB in one row only: 21 tools instead of 14 tools, on identical travels and the same 300 kg (660 lb) table load.
So the question this model answers is how long your tool list is. Twenty-one positions leave room for duplicate drills and taps on a long unattended run, or for two or three part numbers to stay set up side by side without pulling holders between jobs. If every part you make finishes on a dozen tools, the extra positions sit empty.
The envelope is the smaller of the two FANUC lists at this X length. Z is 330 mm (13 in), and that has to cover the fixture, the part and the tool hanging below the spindle nose, so tall vises and long drills compete for the same space. The Robodrill α-D21LiB5ADV keeps 21 tools and 300 kg (660 lb) and opens the strokes to 500 mm (19.7 in) in Y and 400 mm (15.7 in) in Z.
Spindle speed is 10,000 rpm as standard. A 12,000 rpm tapping / high-acceleration spindle and a 24,000 rpm high-speed spindle are listed as options. The control is the FANUC Series 31i-B Plus.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 700 mm (27.6 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 |
| Max Table Load | 300 kg (660 lb) |
| CNC Control | FANUC Series 31i-B Plus |
| Axes | 3-axis (Series 31i-B Plus) |
Specifications sourced from fanuc.co.jp — verified 2026-10-03
Strengths & Limitations
Strengths
- 21 tools on the same 700 x 400 x 330 mm (27.6 x 15.7 x 13 in) travels as the 14-tool Robodrill α-D14LiB
- 300 kg (660 lb) table load, unchanged from the Robodrill α-D14LiB despite the larger tool capacity
- 10,000 rpm standard spindle, with 12,000 rpm and 24,000 rpm spindles listed as options
Limitations
- Z travel is 330 mm (13 in); the Robodrill α-D21LiB5ADV has 400 mm (15.7 in)
- Y travel stops at 400 mm (15.7 in), so wider plates need the 500 mm (19.7 in) Y of the Robodrill α-D14LiBADV
- Table load is 300 kg (660 lb), where the Robodrill α-D14LiBADV is rated for 500 kg (1,100 lb)
Best For
Frequently Asked Questions
01
FANUC lists 21 tools. The Robodrill α-D14LiB Plus has the same travels and table load with 14 tools, so the choice between the two comes down to how many tools your parts need loaded at once.
02
Travels are 700 mm (27.6 in) in X, 400 mm (15.7 in) in Y and 330 mm (13 in) in Z, and the table is rated for 300 kg (660 lb). Remember that the Z figure is shared between the fixture, the part and the length of the tool.
03
Yes. The Robodrill α-D21LiB5ADV Plus Y500 holds the same 21 tools with 500 mm (19.7 in) of Y and 400 mm (15.7 in) of Z, and it uses the FANUC Series 31i-B5 Plus control. The Robodrill α-D14LiBADV Plus Y500 has those larger travels with 14 tools and a 500 kg (1,100 lb) table load.
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