FANUC Robodrill α-D14MiB Plus

$80,000 - $125,000 Updated 2026-03-19

Key Specifications

X Travel

500 mm (19.7 in)

Y Travel

400 mm (15.7 in)

Z Travel

330 mm (13.0 in)

Max Spindle

10,000 RPM (24,000 RPM optional)

Spindle Taper

BT30

Tool Capacity

21-position turret

Overview

The Fanuc Robodrill α-D14MiB5 is the mid-size model in Fanuc's current-generation iB5 Robodrill lineup, positioned between the compact D14SiB5 and the larger D21MiB5. Despite the '14' in the name — a legacy Fanuc model designation, not a tool count — the D14MiB5 carries a 21-tool turret magazine, the same as all current Robodrills. It offers X/Y/Z travels of 500 x 400 x 330 mm (19.7 x 15.7 x 13.0 in), making it the preferred choice for shops running parts too large for the S-body variants but not requiring the full 700 mm X-travel of the D21MiB5.

The iB5 generation's defining feature is the Fanuc 31i-B5 CNC, paired with updated servo drives that enable faster acceleration and deceleration than the previous iA5 series. Tool-to-tool time is 0.7 seconds, chip-to-chip is approximately 1.3 seconds, and all-axis rapid traverse is 54 m/min (2,126 ipm). These numbers define the Robodrill's competitive advantage: for parts with 15-30 tool changes and many short axis moves, the Robodrill cycle time advantage over a conventional VMC typically ranges from 25% to 45%.

The spindle uses a 30-taper (BT30/BBT30) interface and runs at 10,000 RPM standard, with a 24,000 RPM high-speed option for aluminum and light alloy work. The BBT30 dual-contact system improves rigidity over standard BT30 at high speeds. Spindle power is 11 kW (15 hp) continuous at 10,000 RPM, rising to 26 kW peak on the high-speed option. A DDR (Direct Drive Rotary) 5-axis table option provides trunnion-style A and C axes for simultaneous 5-axis contouring — a popular add-on for shops needing 5-axis capability at a lower entry cost than a dedicated 5-axis machining center.

The D14MiB5 sits at a slightly lower price than the D21MiB5 and is commonly specified as an entry point into the Robodrill platform. Machine weight is approximately 3,900 kg (8,598 lb) with a footprint of roughly 2,050 x 1,750 mm. New pricing starts around $80,000-$100,000 for a 3-axis unit, reaching $130,000-$170,000 with the DDR 5-axis table. Direct competitors include the Brother Speedio S500Xd2 and the Haas DT-2.

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 (13.0 in)
Table Size	650 x 400 mm (25.6 x 15.7 in)
Table Load Capacity	200 kg (441 lb)
Max Spindle Speed	10,000 RPM (24,000 RPM optional)
Spindle Taper	BT30
Spindle Motor Power	11 kW (15 hp) standard; 26 kW (35 hp) peak on high-speed option
Tool Capacity	21-position turret
Tool To Tool	0.7 sec
Chip To Chip	1.3 sec
Rapid Traverse Rate	54 m/min (2,126 ipm)
Positioning Accuracy	±0.003 mm
Repeatability	±0.002 mm
Ddr 5axis Option	Available — A-axis: -120°/+30°, C-axis: 360° continuous
CNC Control	FANUC 31i-B Plus
Machine Weight	~3,900 kg (8,598 lb)
X Axis	300
Y Axis	300+100
Z Axis	400
Tool Storage Capacity	28 tools
14 Tools	α-D14SiBADVPlus
21 Tools	α-D21SiBADVPlus
Spindle Spec	Max. speed
Standard	10000 min-1
High Torque	Heavy machining of steel parts (Max. 100N·m)
High Acceleration	High speed and high efficiency machining of aluminum parts
Tapping	12000 min-1
High Speed	24000 min-1

Specifications sourced from fanuc.co.jp — verified 2026-03-28

Strengths & Limitations

Strengths

0.7-second tool-to-tool change is among the fastest in class — on parts with 20+ tool changes, this alone can cut 15-30 minutes from cycle time versus a conventional VMC
54 m/min rapid traverse on all axes minimizes positioning time on small parts with many short moves, compounding with fast tool changes for overall cycle time leadership
Fanuc 31i-B5 control is the industry standard for reliability and compatibility — every major CAM system supports it, and trained operators are plentiful worldwide
DDR 5-axis table option delivers simultaneous 5-axis capability at roughly half the cost of a dedicated 5-axis VMC
Massive installed base of 250,000+ Robodrills globally means excellent parts availability, application knowledge, and integration support

Limitations

BT30 taper limits maximum cutting force and rigidity — not appropriate for aggressive roughing in hardened steel, titanium, or deep cavity milling
21-tool turret is a fixed capacity with no expansion option — jobs requiring more than 21 tools need program interruption for manual tool changes
500 mm X-travel is limiting for anything beyond small and mid-size parts; the D21MiB5 with 700 mm travel is better for larger work
200 kg table load restricts fixture weight, which can be a constraint with heavy steel tombstones or multi-vise setups

Best For

High-volume production of small aluminum, brass, and light alloy parts where fast tool change and rapid traverse times drive per-part cost savings Automotive tier-1 and tier-2 suppliers producing precision small components — connectors, sensor housings, valve bodies — in medium-to-high volumes Contract manufacturers wanting to enter the Robodrill ecosystem at a lower cost before expanding with additional D21MiB5 units Shops running automated cells with Fanuc robots, where the native Fanuc control integration simplifies cell programming and monitoring

Frequently Asked Questions

01 Why does the D14MiB5 have '14' in its name if it has 21 tools?

The '14' is a legacy Fanuc model designation from earlier Robodrill generations — not a tool count. All current-generation Robodrills, including both the D14MiB5 and D21MiB5, are equipped with 21-tool turret magazines. The naming convention has never been officially revised by Fanuc, which causes ongoing confusion for buyers new to the platform.

02 What is the difference between the D14MiB5 and D21MiB5?

The primary difference is X-axis travel: 500 mm on the D14MiB5 versus 700 mm on the D21MiB5. Table size is correspondingly larger on the D21MiB5 (750 x 400 mm vs 650 x 400 mm). Both machines share the same spindle, tool magazine, control, and performance specs. The D14MiB5 is typically $10,000-$20,000 less expensive. If your parts fit within 500 mm X-travel, the D14MiB5 is the more economical choice.

03 Can the D14MiB5 be upgraded to 5-axis?

Yes. The DDR (Direct Drive Rotary) 5-axis table can be ordered factory-installed or retrofitted to an existing D14MiB5. The DDR provides trunnion-style A-axis (-120°/+30°) and full 360° continuous C-axis rotation via direct-drive motors for simultaneous 5-axis contouring. Factory installation costs approximately $40,000-$50,000; retrofit pricing is slightly higher. Some used D14MiB5 machines already have DDR tables installed.

04 How does the D14MiB5 compare to the Brother Speedio S500Xd2?

Both machines target the same compact high-speed VMC segment. The Brother Speedio S500Xd2 offers a faster turret change (0.9 sec vs 1.3 sec chip-to-chip) and lower machine weight for easier relocation. The D14MiB5 counters with the Fanuc 31i-B5 control (industry-standard compatibility), deeper Z-travel (330 mm vs 305 mm), and superior automation ecosystem integration via Fanuc robots. Shops standardized on Fanuc typically prefer the Robodrill; shops prioritizing raw speed often lean toward the Brother.

05 What is the D14MiB5 price new and used?

New D14MiB5 machines price between $80,000 and $100,000 for a standard 3-axis unit. Adding the 24,000 RPM high-speed spindle and DDR 5-axis table brings the configured price to $130,000-$170,000. Used iB5-generation D14 Robodrills from 2018-2023 typically trade between $40,000 and $75,000 depending on hours, spindle condition, and whether the DDR table is included.