Okuma Horizontal Machining Centers (HMC)

Okuma MA-500HII

Est. $350,000 - $500,000 Specs verified 2026-10-03 · okuma.com Updated 2026-10-03

Key Specifications

Spindle Taper

No. 50

Tool Capacity

40 [60, 81, 111, 141, 171, 195, 225, 255, 285, 320, 400]

Rapid Traverse

60 m/min (2,362 ipm)

Spindle Power

30/22 kW (40/30 hp)

pallet size

500 × 500 mm (19.69 × 19.69 in)

control

Okuma OSP-P500M

How much does the Okuma MA-500HII cost?

Estimated price range

Est.$350,000 - $500,000

Our best estimate for a horizontal machining centers (hmc) in this class — not a quote from Okuma. Configuration moves it a long way.

Overview

The Okuma MA-500HII puts a No. 50 taper spindle over a 500 × 500 mm (19.69 × 19.69 in) pallet, a pairing meant for heavy cutting in parts that are not physically large. The machining volume is 700 × 900 × 780 mm (27.56 × 35.43 × 30.71 in), the spindle is rated 30/22 kW (40/30 hp), and rapid traverse is 60 m/min (2,362 ipm).

The envelope is taller than it is wide. With 900 mm of Y against 700 mm of X, the machine favours tall tombstones and upright castings, and 780 mm of Z leaves room for the long boring bars and large face mills that a 50-taper spindle exists to carry. Okuma describes the spindle as having No. 50 large-diameter bearings for rigidity.

Standard spindle speed is 50–6,000 rpm, which fits iron and steel work with large cutters. Two faster ranges are listed in brackets as options, 50–12,000 rpm and 50–20,000 rpm, for shops that also run aluminium or small tools on the same machine. The table gives one power rating and no torque figure, so ask for the power and torque curve of whichever spindle is quoted.

The magazine starts small. 40 tools is standard, and the eleven bracketed options run from 60 to 400 tools. Heavy 50-taper tooling fills a magazine quickly, and a tombstone loaded with mixed parts will outgrow 40 pockets, so the magazine size deserves as much thought as the spindle. The control is the Okuma OSP-P500M.

Either side of it in pallet size, the MA-4000H has a 400 × 400 mm (15.7 × 15.7 in) pallet with a 400 kg (882 lb) load and a 38/18.5 kW (51/25 hp) spindle, and the MA-600HIII has a 630 × 630 mm (24.80 × 24.80 in) pallet with the same 30/22 kW (40/30 hp) rating and 1,050 mm (41.3 in) of X travel.

Full Specifications

Parameter	Value
Pallet Size	500 × 500 mm (19.69 × 19.69 in)
Spindle Taper	No. 50
Spindle Motor Power	30/22 kW (40/30 hp)
Tool Capacity	40 [60, 81, 111, 141, 171, 195, 225, 255, 285, 320, 400]
CNC Control	Okuma OSP-P500M
Spindle Bearing Type	No. 50 large-diameter bearings for rigidity
Max Machining Volume	700 × 900 × 780 mm (27.56 × 35.43 × 30.71 in)
Rotary Pallet Size	500 x 500
Rapid Traverse Rate	60 m/min (2,362 ipm)
Spindle Speed	50–6,000, [50–12,000; 50–20,000] rpm (rpm)

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

Strengths & Limitations

Strengths

No. 50 taper spindle with large-diameter bearings on a 500 × 500 mm (19.69 × 19.69 in) pallet
Machining volume of 700 × 900 × 780 mm (27.56 × 35.43 × 30.71 in), with Y the longest axis
60 m/min (2,362 ipm) rapid traverse, the same rate as the smaller MA-4000H
Optional 50–12,000 rpm and 50–20,000 rpm spindles alongside the standard 50–6,000 rpm
Magazine options up to 400 tools

Limitations

Standard magazine is 40 tools; larger magazines from 60 to 400 tools are options
Standard spindle speed tops out at 6,000 rpm; higher speeds need an optional spindle
X travel of 700 mm (27.56 in) is shorter than the 1,050 mm (41.3 in) of the MA-600HIII
Okuma's table gives no pallet load or spindle torque figure for this model

Best For

Heavy milling and boring in steel and cast iron with No. 50 tooling Tall tombstones and upright castings using 900 mm (35.43 in) of Y travel Compact, dense parts that fit a 500 × 500 mm (19.69 × 19.69 in) pallet Mixed work with the optional 50–12,000 rpm or 50–20,000 rpm spindle

Frequently Asked Questions

01 What spindle does the Okuma MA-500HII have?

A No. 50 taper spindle rated 30/22 kW (40/30 hp), described by Okuma as having large-diameter bearings for rigidity. The standard speed range is 50–6,000 rpm, with 50–12,000 rpm and 50–20,000 rpm listed as options.

02 What is the work envelope of the MA-500HII?

The machining volume is 700 × 900 × 780 mm (27.56 × 35.43 × 30.71 in) and the rotary pallet is 500 × 500 mm (19.69 × 19.69 in). Okuma's table does not state the pallet load, so confirm the weight limit for the tombstone, fixtures and parts.

03 How many tools does the MA-500HII magazine hold?

40 tools as standard. Okuma lists optional magazines of 60, 81, 111, 141, 171, 195, 225, 255, 285, 320 and 400 tools. With 50-taper tooling and a multi-sided tombstone, the standard magazine fills quickly.

04 Which control does the MA-500HII use?

The Okuma OSP-P500M, Okuma's own control. Rapid traverse is 60 m/min (2,362 ipm), and the standard spindle is a No. 50 taper rated 30/22 kW (40/30 hp).

05 How does the MA-500HII compare with the MA-600HIII?

Both list 30/22 kW (40/30 hp) and 60 m/min (2,362 ipm) rapids. The MA-600HIII has a 630 × 630 mm (24.80 × 24.80 in) pallet and 1,050 mm (41.3 in) of X travel, while the MA-500HII has a 500 × 500 mm (19.69 × 19.69 in) pallet and a 700 mm X dimension in its machining volume.