Okuma Horizontal Machining Centers (HMC)

Okuma MS-320H

Specs verified 2026-10-03 · okuma.com Updated 2026-10-03

Image: okuma.com, Okuma

Key Specifications

Tool Capacity

10 tools (opt. 24)

Rapid Traverse

X, Y: 50 m/min (1,969 ipm); Z: 60 m/min (2,362 ipm)

Spindle Power

25 / 15 / 11 kW (33 / 20 / 15 hp) at 15% ED / 25% ED / continuous

max machining volume

250 x 250 x 570 mm (9.84 x 9.84 x 22.44 in)

rotary pallet size

Ø320 mm (Ø12.59 in)

How much does the Okuma MS-320H cost?

Price estimate

Uncertain

We do not have a price for the Okuma MS-320H that we can stand behind, so we show no number. Configuration, options and installation move the final price a long way: a quote is the reliable figure.

Overview

The Okuma MS-320H is a small horizontal machining center built around a Ø320 mm (Ø12.59 in) rotary pallet, with a maximum machining volume of 250 x 250 x 570 mm (9.84 x 9.84 x 22.44 in) and a 10-tool magazine as standard.

Everything in the table describes a machine for one part or one part family, not a general-purpose horizontal. The X-Y window is only 250 x 250 mm, while Z is 570 mm, more than twice either of the other axes. Ten tools as standard, or 24 as the option, is enough for a fixed process and too few for a job shop that changes work daily. For contrast, the MA-4000H carries 48 tools on a 400 × 400 mm (15.7 × 15.7 in) pallet.

Spindle power is given at three duty ratings: 25 kW (33 hp) at 15% ED, 15 kW (20 hp) at 25% ED and 11 kW (15 hp) continuous. Plan sustained cuts around the 11 kW figure; the higher ratings apply only to short bursts within a cycle. Rapids are 50 m/min (1,969 ipm) in X and Y and 60 m/min (2,362 ipm) in Z, so the long axis is also the fastest. Spindle speed and taper are not in the listed rows.

Full Specifications

Parameter	Value
Max Machining Volume	250 x 250 x 570 mm (9.84 x 9.84 x 22.44 in)
Rotary Pallet Size	Ø320 mm (Ø12.59 in)
Spindle Motor Power	25 / 15 / 11 kW (33 / 20 / 15 hp) at 15% ED / 25% ED / continuous
Rapid Traverse Rate	X, Y: 50 m/min (1,969 ipm); Z: 60 m/min (2,362 ipm)
Tool Capacity	10 tools (opt. 24)

Specifications sourced from okuma.com — verified 2026-10-03

Strengths & Limitations

Strengths

Compact 250 x 250 x 570 mm (9.84 x 9.84 x 22.44 in) machining volume on a Ø320 mm rotary pallet suits small parts made in volume
Z rapid of 60 m/min (2,362 ipm) on the longest axis, with 50 m/min (1,969 ipm) in X and Y
Spindle power of 25 kW (33 hp) at 15% ED for short heavy cuts, 11 kW (15 hp) continuous
Magazine can be taken from 10 tools to the 24-tool option

Limitations

The 250 x 250 mm X-Y window excludes anything but small parts
10 tools as standard, and 24 at most, restricts the number of operations and leaves little room for sister tooling
Continuous spindle power is 11 kW (15 hp); the 25 kW (33 hp) figure applies only at 15% ED
Spindle speed range and taper are not listed

Best For

High-volume production of one small part or part family Parts that fit a 250 x 250 x 570 mm machining volume Fixed processes needing 10 tools, or 24 with the option Short-cycle work where rapid moves at 50 to 60 m/min dominate

Frequently Asked Questions

01 How large a part fits the Okuma MS-320H?

The maximum machining volume is 250 x 250 x 570 mm (9.84 x 9.84 x 22.44 in) and the rotary pallet is Ø320 mm (Ø12.59 in). No pallet load is listed, so fixture and part weight should be checked with Okuma.

02 How many tools does the MS-320H hold?

10 tools as standard, with 24 listed as the option. That is far fewer than Okuma's general-purpose horizontals, such as the MA-4000H with 48 tools as standard, and reflects a machine meant to run a fixed process.

03 What does the 25 / 15 / 11 kW spindle rating mean?

They are three duty ratings for the same spindle motor. It can deliver 25 kW (33 hp) at 15% ED, 15 kW (20 hp) at 25% ED and 11 kW (15 hp) continuously. For cuts that run most of the cycle, size the process on 11 kW.