Kitamura Mytrunnion-5G
Image: kitamura-machinery.com, Kitamura Machinery
Key Specifications
X Travel
Y Travel
Z Travel
Max Spindle
Spindle Taper
Tool Capacity
How much does the Kitamura Mytrunnion-5G cost?
Estimated price range
Our best estimate for a 5-axis machining center in this class — not a quote from Kitamura Machinery. Configuration moves it a long way.
Overview
The Kitamura Mytrunnion-5G is a trunnion-table 5-axis machining center with a Ø630 mm (Ø24.8 in) table, travels of 815 mm (32.1 in) in X, 745 mm (29.3 in) in Y and 500 mm (19.7 in) in Z, and a 4-step gear-driven NST No. 40 spindle that runs from 20 to 20,000 rpm. HSK-A63 is listed as an optional interface.
The gear drive is the reason to look at this machine. A speed range that starts at 20 rpm and reaches 20,000 rpm through four gear steps lets one spindle take slow, torque-hungry cuts in steel and still run small tools fast. Kitamura's table for this model states the range and the drive but no power or torque figure, so ask for the power and torque curves before sizing roughing cuts.
The largest part is Ø630 mm (Ø24.8 in) x 500 mm (19.7 in), the same diameter as the table, with a table load of 400 kg (880 lbs). The A axis covers 150° (-120 to +30°) and the C axis 0 to 360°. Rotary indexing speeds are 6.25 rpm (2,250 deg/min) and 16.6 rpm (6,000 deg/min). Those are slow, which points the machine at positioning a heavy part and cutting it, and at steady 5-axis feeds, more than at quick flicks between orientations.
Positioning accuracy is ±0.001 mm (±0.000039 in) over full stroke and repeatability is ±0.0005 mm (±0.00002 in). Rapids are 50 m/min (1,969 ipm) on X and Y and 25 m/min (984 ipm) on Z. The magazine holds 50 tools, 100 tools optional, the control is Arumatik-Mi, and the supply is 50 kVA at 200 V AC, 3-phase. Against the Mytrunnion-4G, with its Ø400 mm (Ø15.7 in) table and 610 mm (24 in) of X and Y, the Mytrunnion-5G adds table and travel in X and Y but has less Z, 500 mm (19.7 in) against 550 mm (21.7 in).
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 815 mm (32.1 in) |
| Y-Axis Travel | 745 mm (29.3 in) |
| Z-Axis Travel | 500 mm (19.7 in) |
| Trunnion Table Diameter | 630 mm (24.8 in) |
| Max Spindle Speed | 20 - 20,000 rpm, 4-Step Gear Driven |
| Spindle Taper | NST No. 40 (HSK-A63 optional) |
| Spindle Drive | 4-Step Gear Driven |
| Tool Capacity | 50 tools (100 Tools optional) |
| A Axis Range | 150° (-120 to +30°) |
| C Axis Range | 0 to 360° |
| Positioning Accuracy | ±0.001 mm (±0.000039")/full stroke |
| Repeatability | ±0.0005 mm (±0.00002") |
| Power Supply | 50 kVA, 200 V AC, 3-phase |
| Table Size | Ø630 mm (Ø24.8 in) |
| Table Load Max | 400 kg (880 lbs) |
| CNC Control | Arumatik-Mi |
| Electrical | 50 KVA, 200v AC, 3 Phase |
| Max Workpiece Size | Ø630 mm (Ø24.8 in) x 500 mm (19.7 in) |
| Rapid Traverse Rate | X,Y: 50 m/min (1,969 ipm); Z: 25 m/min (984 ipm) |
| Rotary Indexing Speed | 6.25 rpm (2,250 deg/min), 16.6 rpm (6,000 deg/min) |
Specifications sourced from kitamura-machinery.com — verified 2026-10-03
Strengths & Limitations
Strengths
- 4-step gear-driven spindle with a 20 - 20,000 rpm range on NST No. 40
- Positioning accuracy of ±0.001 mm (±0.000039 in) over full stroke, ±0.0005 mm (±0.00002 in) repeatability
- Ø630 mm (Ø24.8 in) table carrying 400 kg (880 lbs), with a workpiece envelope of Ø630 mm (Ø24.8 in) x 500 mm (19.7 in)
- 815 mm (32.1 in) of X and 745 mm (29.3 in) of Y travel
- 100-tool magazine available in place of the standard 50 tools
Limitations
- Rotary indexing speeds of 6.25 rpm (2,250 deg/min) and 16.6 rpm (6,000 deg/min) are slow for programs with frequent reorientation
- Z travel is 500 mm (19.7 in), less than the 550 mm (21.7 in) of the smaller Mytrunnion-4G
- Standard magazine is 50 tools; 100 tools and HSK-A63 are options
- Z rapid of 25 m/min (984 ipm) is half the X and Y rate of 50 m/min (1,969 ipm)
Best For
Frequently Asked Questions
01
The spindle is a 4-step gear-driven NST No. 40 unit with a range of 20 - 20,000 rpm. Gear steps let the motor work at a useful speed while the tool turns slowly, which is what low-speed cuts in steel need, and the top step still reaches 20,000 rpm. Kitamura's table does not state power or torque for this model. HSK-A63 is optional.
02
The maximum workpiece is Ø630 mm (Ø24.8 in) x 500 mm (19.7 in) and the table load is 400 kg (880 lbs), fixture included. Travels are 815 mm (32.1 in) in X, 745 mm (29.3 in) in Y and 500 mm (19.7 in) in Z.
03
Kitamura lists rotary indexing speeds of 6.25 rpm (2,250 deg/min) and 16.6 rpm (6,000 deg/min). The A axis has a range of 150° (-120 to +30°) and the C axis 0 to 360°. These speeds suit indexing and steady 5-axis feeds; they will add time to programs that reorient the part often.
04
The Mytrunnion-4G has a Ø400 mm (Ø15.7 in) table, 610 mm (24 in) of X and Y, 550 mm (21.7 in) of Z, 60 tools and a 15 HP spindle at 40 - 15,000 rpm with 20,000 rpm optional. The Mytrunnion-5G has the Ø630 mm (Ø24.8 in) table, longer X and Y, 50 tools and the gear-driven 20 - 20,000 rpm spindle. Both list rapids of 50 m/min (1,969 ipm) on X and Y and 25 m/min (984 ipm) on Z.
05
50 kVA at 200 V AC, 3-phase. Shops on a different supply voltage should plan for a transformer of matching capacity. The control is Kitamura's Arumatik-Mi.
Videos
KitamuraMachinery2
Abplanalp Sp. z o.o.
More from Kitamura Machinery
Other 5-Axis Machining Centers
Spinner U5-1530
Mazak VORTEX e-V
DMG Mori DMU 340 P FD
Haas UMC-750
Hurco DCX32 5Si
