Hurco VMX42UDi
Key Specifications
X Travel
Y Travel
Z Travel
Max Spindle
Spindle Taper
Tool Capacity
Overview
The Hurco VMX42UDi brings direct-drive spindle technology to the 42-inch trunnion 5-axis platform. Like its smaller VMX30UDi sibling, the 'D' designation means a direct-drive spindle that eliminates belt harmonics and thermal growth, delivering cleaner surface finishes and better dimensional consistency during long production runs.
Travels are 1,067 x 610 x 520 mm (42 x 24 x 20.5 in) with a 398 mm (15.7 in) trunnion table rated for 250 kg (550 lb). A-axis tilts +30/-110 degrees, C-axis rotates 360 degrees. The travel envelope and table size match the standard VMX42Ui exactly — the direct-drive spindle is a drop-in upgrade to the proven platform.
The 15,000 RPM direct-drive spindle produces 18 kW (24 hp) of peak power and 95 Nm (70.4 ft-lbs) of torque at 1,500 RPM. Compared to the belt-driven Ui's 238.8 Nm at 720 RPM, you're trading low-end torque for spindle smoothness and 3,000 RPM of additional speed. For shops primarily finishing aluminum and requiring precision surface quality, this is the right trade.
Rapids are notably fast at 45 m/min (1,771 ipm) on X/Y and 40 m/min (1,575 ipm) on Z — matching the UHSi variant and significantly faster than the standard Ui's 38/32 m/min. The 40-tool ATC carries CAT 40 / Big Plus tooling. Rotary axes rapid at 25 RPM.
At 7,200 kg (15,840 lb), the VMX42UDi matches the UHSi's weight. Floor space is 4,578 x 3,719 mm (180 x 146 in), and power draw is 31 KVA. WinMax control with full 5-axis support is standard.
New pricing runs $210,000-$270,000. This is the machine for shops that need the VMX42Ui's travel and table but want better finish quality and higher speeds than the belt-driven standard.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 1,067 mm (42 in) |
| Y-Axis Travel | 610 mm (24 in) |
| Z-Axis Travel | 520 mm (20.5 in) |
| A Axis Range | +30° / -110° |
| C Axis Range | 360° |
| Max Spindle Speed | 15,000 RPM |
| Spindle Taper | CAT 40 / Big Plus |
| Spindle Motor Power | 18 kW (24 hp) peak |
| Spindle Torque | 70.4 ft. lbs @ 1500 rpm (95 Nm @ 1500 rpm) |
| Tool Capacity | 40 |
| Rotary Table Diameter | 398 mm (15.7 in) |
| Max Table Load | 250 kg (550 lb) |
| Rapid Traverse Xy | 45 m/min (1,771 ipm) |
| Rapid Traverse Z | 40 m/min (1,575 ipm) |
| Rotary Axis Rapid | 25 RPM |
| Max Tool Diameter | 3 in (76 mm) |
| Max Tool Length | 11.8 in (300 mm) |
| Max Tool Weight | 15.4 lb (7 kg) |
| Machine Weight | 7,200 kg (15,840 lb) |
| Floor Space | 4,578 x 3,719 mm (180 x 146 in) |
| CNC Control | Hurco WinMax |
| Travels Capacityx Y Z Axis Travel | 42 x 24 x 20.5 in (1067 x 610 x 520 mm) |
| A Axis Travel | +30°/-110° |
| C Axis Travel | 360° |
| Spindle Nose To Table | 3.5 in / 24 in (90 mm / 610 mm) |
| Table Diameter | 15.7 in (398 mm) |
| Max Weight On Rotary Trunnion Table | 550 lbs (250 kg) |
| T Slot Size | 6 x .56 in x 60° (6 x 14 mm x 60°) |
| Spindlemax Spindle Speed | 15000 rpm |
| Peak Spindle Motor | 24 hp (18 kW) |
| Tool Changertool Type | CAT, BT, DIN 40 |
| Feedratesrapid Traverse Xyz Axis | 1771, 1771, 1575 in/min (45, 45, 40 m/min) |
| Max Programmable Feedrate | 1771 in/min (45 m/min) |
| Rapid Traverse A C Axis | 25 rpm |
| Sizemax Operating Floor Space | 180.2 x 146.4 in (4,578 x 3,719 mm) |
| Machine Height | 127.4 in (3,237 mm) |
| Machine Weight | 15,840 lbs (7,200 kg) |
| Electricalpower Rating Full Load Kva | 31 KVA |
Specifications sourced from hurco.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Direct-drive spindle delivers superior surface finish by eliminating belt-driven vibration harmonics
- 15,000 RPM max speed provides 25% more headroom than the belt-driven Ui for aluminum finishing
- 45 m/min rapids reduce non-cutting time significantly on complex 5-axis programs with many repositions
- 398 mm (15.7 in) trunnion table handles mid-size production parts with room for proper fixturing
- Less thermal growth from direct-drive spindle improves part consistency during long production runs
- 42-inch X travel in a 5-axis configuration covers a wide range of part sizes and job types
Limitations
- 95 Nm torque at 1,500 RPM is less than half the belt-driven Ui's 238.8 Nm — heavy steel roughing is compromised
- $30-40K premium over the standard VMX42Ui requires work that specifically benefits from direct-drive advantages
- Direct-drive spindle rebuilds cost $12,000-$20,000 versus $6,000-$12,000 for belt-driven units
- WinMax control is proprietary — operator experience doesn't transfer to Fanuc or Siemens shops
- Hurco dealer density is lower than major competitors, affecting service and parts availability
Best For
Frequently Asked Questions
01
New pricing runs $210,000-$270,000, a $30-40K premium over the belt-driven VMX42Ui. The premium covers the direct-drive spindle motor, enhanced drive electronics, and thermal management system. Used machines are limited in availability.
02
The UHSi runs faster (18K RPM) with more power (47 hp) and uses HSK 63 tooling. The UDi runs 15K RPM with 24 hp but uses standard CAT 40 tooling. The UHSi is for maximum speed and power; the UDi is for smooth, precise finishing with lower tooling investment. The UHSi costs $20-30K more.
03
For most general job shops, the standard belt-driven VMX42Ui provides better value. Direct-drive pays off when your customers specify surface finish requirements (Ra 0.4-0.8 or tighter), when you're running long unattended cycles where thermal stability matters, or when you're producing mold cavities that need minimal polishing.
04
Yes, but at reduced depths and feeds compared to the belt-driven variant. The 70.4 ft-lbs of torque handles steel roughing with moderate parameters. For heavy stock removal in steel, the standard Ui's 176 ft-lbs provides significantly more authority. Many shops use the UDi primarily for aluminum and finishing work.
05
Direct-drive eliminates belt replacement and tensioning — two common maintenance items on belt-driven machines. However, the integrated motor is more expensive to repair when issues arise. Day-to-day, direct-drive is lower maintenance. Long-term, budget for higher repair costs when the spindle eventually needs service.
Videos
MTDCNC
Hurco Europe
Werkzeug-Eylert GmbH & Co. KG
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