Fanuc Robodrill α-D21LiA5
Key Specifications
X Travel
Y Travel
Z Travel
Max Spindle
Spindle Taper
Tool Capacity
How much does the Fanuc Robodrill α-D21LiA5 cost?
Estimated price range
Our best estimate for a 5-axis machining center in this class — not a quote from Fanuc. Configuration moves it a long way.
Overview
The Fanuc Robodrill α-D21LiA5 is a BT30 / BBT30 5-axis machining center that pairs a long 700 mm (27.6 in) X travel with a small direct-drive rotary table. Y travel is 400 mm (15.7 in) and Z is 330 mm (13.0 in). The DDR table is about 300 mm (11.8 in) in diameter, tilts on A from -120° to +30° and turns 360° continuously on C.
The rotary table sets the limits, not the linear axes. Its listed load is 30 kg (66 lb), and the fixture, the clamps and the part all count against it. X travel is more than twice the table diameter, so a part will run out of weight allowance or swing long before it runs out of stroke. That points the machine at small components cut on several faces in one clamping.
The listed spindle gives 11 kW (15 hp) continuous and 10,000 RPM, with a 24,000 RPM spindle as an option. Tools sit in a 21-position turret that changes in 0.7 sec tool-to-tool and 1.3 sec chip-to-chip, and rapids are 54 m/min (2,126 ipm). Positioning accuracy is ±0.003 mm and repeatability ±0.002 mm.
On an existing machine, read the control off the nameplate. The control row names two generations, Fanuc 31i-A5 for the iA5 generation and 31i-B5 on current production, and posts should match the one fitted. Machine weight is about 4,200 kg (9,259 lb).
Full Specifications
| Parameter | Value |
|---|---|
| Ddr Table Load | 30 kg (66 lb) |
| Max Spindle Speed | 10,000 RPM (24,000 RPM optional) |
| Spindle Taper | BT30 / BBT30 |
| Spindle Motor Power | 11 kW (15 hp) continuous |
| Rapid Traverse Rate | 54 m/min (2,126 ipm) |
| CNC Control | Fanuc 31i-A5 (iA5 gen) / 31i-B5 on current production |
| X-Axis Travel | 700 mm (27.6 in) |
| Y-Axis Travel | 400 mm (15.7 in) |
| Z-Axis Travel | 330 mm (13.0 in) |
| A Axis Range | -120° to +30° (DDR direct-drive) |
| C Axis Range | 360° continuous (DDR direct-drive) |
| Ddr Table Diameter | ~300 mm (11.8 in) |
| Tool Capacity | 21-position turret |
| Tool Change (tool-to-tool) | 0.7 sec |
| Tool Change (chip-to-chip) | 1.3 sec |
| Positioning Accuracy | ±0.003 mm |
| Repeatability | ±0.002 mm |
| Machine Weight | ~4,200 kg (9,259 lb) |
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
- Direct-drive A axis from -120° to +30° and a C axis with 360° continuous rotation
- 700 mm (27.6 in) of X travel with 400 mm (15.7 in) of Y and 330 mm (13.0 in) of Z
- 21-position turret changes in 0.7 sec tool-to-tool and 1.3 sec chip-to-chip
- 11 kW (15 hp) of continuous spindle power, with a 24,000 RPM spindle listed as an option
Limitations
- DDR table load is 30 kg (66 lb), fixture and part together
- The DDR table is about 300 mm (11.8 in) in diameter, far smaller than the 700 mm (27.6 in) X travel
- The 24,000 RPM spindle is an option; the standard spindle tops out at 10,000 RPM
- The control row names two generations, 31i-A5 and 31i-B5, so the control on a given machine has to be checked
Best For
Frequently Asked Questions
01
The listed DDR table load is 30 kg (66 lb), on a table about 300 mm (11.8 in) in diameter. That has to cover the fixture and clamping as well as the part, so weigh the workholding first and see what is left for the workpiece.
02
The A axis is listed from -120° to +30° and the C axis as 360° continuous. Both are DDR direct-drive. The table gives no rotary speeds, so indexing time between faces cannot be worked out from it.
03
A BT30 / BBT30 spindle with 11 kW (15 hp) continuous and a maximum of 10,000 RPM. A 24,000 RPM spindle is listed as optional, so on an existing machine check which of the two is fitted.
04
The linear travels are the same: 700 mm (27.6 in), 400 mm (15.7 in) and 330 mm. The Robodrill α-D14LiB5 Plus is listed with 14 tools, a 300 kg (660 lb) table load and the FANUC Series 31i-B5 Plus control. This model has a 21-position turret and a DDR table rated for 30 kg (66 lb).
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