Kitamura Machinery 5-Axis Machining Centers

Kitamura Mytrunnion-7G

Est. $600,000 - $900,000 Updated 2026-10-03

Image: kitamura-machinery.com, Kitamura Machinery

Key Specifications

X Travel

1,119 mm (46.9 in)

Y Travel

1,380 mm (54.3 in)

Z Travel

765 mm (30.1 in)

Max Spindle

12,000 RPM

Spindle Taper

NST No. 50 (HSK-A100 optional)

Tool Capacity

100-tool ATC

How much does the Kitamura Mytrunnion-7G cost?

Estimated price range

Est.$600,000 - $900,000

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-7G is the 50-taper machine of this trunnion 5-axis line as listed: a 1,000 mm trunnion table carrying up to 2,015 kg (4,440 lb), with an NST No. 50 spindle, 4-step gear driven, at 12,000 RPM. HSK-A100 is listed as an optional interface.

The listed figures describe a machine for large, heavy parts. Y travel is 1,380 mm (54.3 in) and Z is 765 mm (30.1 in). The A axis tilts from -120 to +30 degrees and C rotates 0 to 360 degrees continuously. A gear-driven 50-taper spindle is the usual choice where the work is steel, cast iron or titanium and the cutters are large, and the 100-tool changer gives room for the long tool lists such parts tend to need.

Rapids are listed at 50 m/min (1,969 ipm) on X and Y and 30 m/min (1,181 ipm) on Z. Positioning accuracy is ±0.002 mm (±0.000079 in) per full stroke with ±0.001 mm (±0.000039 in) repeatability, and the control is Kitamura's Arumatik-Mi. The supply is 65 KVA at 200V AC, 3-phase.

For scale, the Mytrunnion-5G has a Ø630 mm (Ø24.8 in) table and an NST No. 40 spindle that runs to 20,000 rpm. The Mytrunnion-7G is the step to take when the part outgrows that table or the cut outgrows that taper. Confirm the X travel and table details with Kitamura before planning work around them.

Full Specifications

Parameter	Value
X-Axis Travel	1,119 mm (46.9 in)
Y-Axis Travel	1,380 mm (54.3 in)
Z-Axis Travel	765 mm (30.1 in)
Trunnion Table Diameter	1,000 mm (39.7 in)
Max Workpiece Weight	2,015 kg (4,440 lb)
Max Spindle Speed	12,000 RPM
Spindle Taper	NST No. 50 (HSK-A100 optional)
Spindle Drive	4-Step Gear Driven
Tool Capacity	100-tool ATC
Rapid Traverse Xy	50 m/min (1,969 ipm)
Rapid Traverse Z	30 m/min (1,181 ipm)
A Axis Range	-120 to +30 degrees
C Axis Range	0 to 360 degrees (continuous)
Positioning Accuracy	+/-0.002 mm (+/-0.000079 in) per full stroke
Repeatability	+/-0.001 mm (+/-0.000039 in)
Power Supply	65 KVA, 200V AC, 3-phase
CNC Control	Kitamura Arumatik-Mi

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

Listed table load of 2,015 kg (4,440 lb) on a 1,000 mm trunnion table
NST No. 50 spindle with 4-step gear drive, 12,000 RPM, and HSK-A100 as an option
100-tool changer for long tool lists
Listed positioning accuracy of ±0.002 mm (±0.000079 in) per full stroke and ±0.001 mm (±0.000039 in) repeatability

Limitations

12,000 RPM top speed limits small-tool finishing compared with the 20,000 rpm of the Mytrunnion-5G
Z rapid is 30 m/min (1,181 ipm), against 50 m/min (1,969 ipm) on X and Y
Needs a 65 KVA, 200V AC, 3-phase supply, and a machine built for 2,015 kg (4,440 lb) parts needs matching crane and floor capacity
A-axis tilt of -120 to +30 degrees puts the deep tilt on one side

Best For

Heavy 5-axis parts up to 2,015 kg (4,440 lb) 50-taper milling in steel, cast iron and titanium Large components that need 1,380 mm (54.3 in) of Y travel Jobs with long tool lists, using the 100-tool changer

Frequently Asked Questions

01 How heavy a part can the Mytrunnion-7G carry?

The listed maximum workpiece weight is 2,015 kg (4,440 lb) on a 1,000 mm trunnion table. That is fixture and part together. Plan crane capacity and lifting access for loads of that size before the machine is sited.

02 What spindle does the Mytrunnion-7G have?

The listed spindle is NST No. 50 with a 4-step gear drive and a top speed of 12,000 RPM. HSK-A100 is listed as optional. No power or torque figure is listed, so ask for the spindle's power and torque curves when comparing it with other 50-taper machines.

03 What are the rotary axis ranges?

The A axis is listed at -120 to +30 degrees and the C axis at 0 to 360 degrees, continuous. Deep tilt is available toward one side, and the part should be fixtured with that in mind. Listed accuracy is ±0.002 mm (±0.000079 in) per full stroke for positioning and ±0.001 mm (±0.000039 in) for repeatability.

04 How does the Mytrunnion-7G relate to the Mytrunnion-5G?

The Mytrunnion-5G has a Ø630 mm (Ø24.8 in) table, an NST No. 40 spindle covering 20 - 20,000 rpm and 50 tools as standard. The Mytrunnion-7G is listed with a 1,000 mm table, an NST No. 50 spindle at 12,000 RPM and a 100-tool changer, so it trades top speed for taper size and load.