FANUC RoboDrill a-D21LiB
Key Specifications
X Travel
Y Travel
Z Travel
Spindle Taper
Table Size
Rapid Traverse
How much does the FANUC RoboDrill a-D21LiB 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 a-D21LiB is a BT30 vertical machining center with a 21-position turret and listed travels of 700 x 400 x 330 mm (27.6 x 15.7 x 13.0 in). The listed figures describe a machine built around short cycles: 0.8 sec tool-to-tool, 1.4 sec chip-to-chip and 54 m/min (2,125 ipm) rapid traverse.
The spindle is listed at 10,000 RPM with 11 kW (15 hp) continuous, and a 24,000 RPM spindle as an option. On a BT30 taper that combination favours drilling, tapping and light milling with small cutters over heavy roughing. The table measures 850 x 410 mm (33.5 x 16.1 in) and takes 300 kg (661 lb). It is longer than the 700 mm X travel, so the outer ends of a full-length fixture lie beyond the reach of the spindle.
Listed positioning accuracy is ±0.004 mm (±0.00016 in) and repeatability ±0.002 mm (±0.00008 in). The machine weighs 4,100 kg (9,039 lb) on a 2,350 x 1,750 mm (92.5 x 68.9 in) footprint. The control is listed as the FANUC 31i-B; the Robodrill α-D21LiB Plus, with the same travels and 21 tools, lists the FANUC Series 31i-B Plus, so anyone looking at a used machine should confirm which control generation is fitted.
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 (13.0 in) |
| Table Size | 850 x 410 mm (33.5 x 16.1 in) |
| Max Table Load | 300 kg (661 lb) |
| Spindle Speed | 10,000 RPM (24,000 RPM optional) |
| Spindle Motor Power | 11 kW (15 hp) continuous |
| Spindle Taper | BT30 |
| Tool Magazine | 21-position turret |
| Tool Change Time | 0.8 sec (tool-to-tool), 1.4 sec (chip-to-chip) |
| Rapid Traverse Rate | 54 m/min (2,125 ipm) |
| Positioning Accuracy | ±0.004 mm (±0.00016 in) |
| Repeatability | ±0.002 mm (±0.00008 in) |
| CNC Control | FANUC 31i-B |
| Machine Weight | 4,100 kg (9,039 lb) |
| Floor Space Required | 2,350 x 1,750 mm (92.5 x 68.9 in) |
Specifications compiled from manufacturer literature and industry references. Not independently verified against a published spec sheet — confirm with the manufacturer or an authorised dealer before making a purchasing decision.
Strengths & Limitations
Strengths
- Tool change listed at 0.8 sec tool-to-tool and 1.4 sec chip-to-chip
- 54 m/min (2,125 ipm) rapid traverse on 700 x 400 x 330 mm (27.6 x 15.7 x 13.0 in) travels
- 21-position turret, enough for duplicate drills and taps on long runs
- Listed repeatability of ±0.002 mm (±0.00008 in)
- Optional 24,000 RPM spindle for small-diameter tools
Limitations
- BT30 taper with 11 kW (15 hp) continuous: suited to small tools, not heavy roughing
- Z travel of 330 mm (13.0 in) is shared by fixture, part and tool length
- Table load is limited to 300 kg (661 lb)
- The 24,000 RPM spindle is an option; the standard spindle is 10,000 RPM
Best For
Frequently Asked Questions
01
The listed travels are 700 mm (27.6 in) in X, 400 mm (15.7 in) in Y and 330 mm (13.0 in) in Z. The table is 850 x 410 mm (33.5 x 16.1 in) with a 300 kg (661 lb) load limit.
02
The listed figures are 0.8 sec tool-to-tool and 1.4 sec chip-to-chip from a 21-position turret. On parts with many short drilling and tapping operations, that change time is a large share of the cycle, which is why it matters more here than on a machine doing long milling cuts.
03
A BT30 spindle listed at 10,000 RPM and 11 kW (15 hp) continuous. A 24,000 RPM spindle is listed as optional. The table gives no torque figure, so check the spindle data for the machine in question if you plan larger drills or face mills.
04
The listed footprint is 2,350 x 1,750 mm (92.5 x 68.9 in) and the machine weight is 4,100 kg (9,039 lb). Allow extra room around the footprint for door opening, chip handling and service access, which the table does not quantify.
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