Okuma Horizontal Machining Centers (HMC)

Okuma MB-4000H

Est. $250,000 – $375,000 Specs verified 2026-10-03 · okuma.com Updated 2026-10-03

Image: d30jruhmdicmo0.cloudfront.net, Okuma

Key Specifications

Spindle Taper

No. 40 (BT40)

Tool Capacity

48 [64, 110, 146, 182, 218] Multi-Magazine

Rapid Traverse

60,000 mm/min (2,362 ipm)

Spindle Power

26/18.5 [30/22] kW (34 / 25 [40 / 30] hp)

pallet size

400 × 400 mm (15.75 × 15.75 in)

max machining volume

560 × 560 × 625 mm (22.05 × 22.05 × 24.61 in)

How much does the Okuma MB-4000H cost?

Estimated price range

Est.$250,000 – $375,000

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 MB-4000H is a compact horizontal machining center with a 400 × 400 mm (15.75 × 15.75 in) pallet, a No. 40 (BT40) spindle that runs 50–15,000 rpm as standard and a maximum machining volume of 560 × 560 × 625 mm (22.05 × 22.05 × 24.61 in).

Speed is the point of this machine. The standard range already reaches 15,000 rpm, a 50–20,000 rpm spindle is the bracketed option, and rapids are 60,000 mm/min (2,362 ipm). The motor is 26/18.5 kW (34 / 25 hp), or 30/22 kW (40 / 30 hp) as an option. That combination suits aluminium and light-alloy parts cut with small tools, where time is lost in tool changes and positioning more than in the cut.

Tool capacity is listed as a Multi-Magazine of 48 tools, with 64, 110, 146, 182 and 218 as bracketed alternatives. The MA-4000H shares the 400 mm pallet size but has a different spindle rating: Okuma lists it at 38/18.5 kW (51/25 hp), against 26/18.5 kW here. No pallet load is given for the MB-4000H, so check the weight of tombstone and parts with Okuma.

Full Specifications

Parameter	Value
Pallet Size	400 × 400 mm (15.75 × 15.75 in)
Spindle Taper	No. 40 (BT40)
Spindle Motor Power	26/18.5 [30/22] kW (34 / 25 [40 / 30] hp)
Tool Capacity	48 [64, 110, 146, 182, 218] Multi-Magazine
Max Machining Volume	560 × 560 × 625 mm (22.05 × 22.05 × 24.61 in)
Rotary Pallet Size	400 x 400
Spindle Power Hi Winding	26/18.5 [30/22] kW (34 / 25 [40 / 30] hp)
Rapid Traverse Rate	60,000 mm/min (2,362 ipm)
Spindle Speed	50–15,000 [50–20,000] rpm (rpm)

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

Strengths & Limitations

Strengths

50–15,000 rpm as standard and a 50–20,000 rpm option on a No. 40 (BT40) spindle
Rapid traverse of 60,000 mm/min (2,362 ipm) across a 560 × 560 × 625 mm envelope keeps positioning time short
Multi-Magazine of 48 tools with listed alternatives of 64, 110, 146, 182 and 218
Optional 30/22 kW (40 / 30 hp) motor above the standard 26/18.5 kW (34 / 25 hp)

Limitations

The No. 40 taper limits cutter size and overhang compared with the No. 50 spindles on Okuma's larger horizontals such as the MB-10000H
The machining volume of 560 × 560 × 625 mm (22.05 × 22.05 × 24.61 in) rules out larger housings; the MB-5000HII lists 760 × 760 × 810 mm
The 20,000 rpm spindle and the 30/22 kW motor are options, and no pallet load is listed

Best For

High-speed aluminium machining at 15,000 or 20,000 rpm Small prismatic parts on a 400 × 400 mm pallet or tombstone Short-cycle production where 60,000 mm/min rapids matter Unattended runs with the larger Multi-Magazine options

Frequently Asked Questions

01 What spindle does the Okuma MB-4000H have?

A No. 40 (BT40) spindle running 50–15,000 rpm as standard, with a 50–20,000 rpm range listed as an option. The motor is 26/18.5 kW (34 / 25 hp) as standard and 30/22 kW (40 / 30 hp) as the bracketed option.

02 What is the work envelope of the MB-4000H?

The maximum machining volume is 560 × 560 × 625 mm (22.05 × 22.05 × 24.61 in) on a 400 × 400 mm (15.75 × 15.75 in) pallet. Okuma's table for this model does not list a pallet load, so confirm the allowed fixture and part weight before quoting a job.

03 How many tools can the MB-4000H carry?

The standard Multi-Magazine holds 48 tools. Okuma lists 64, 110, 146, 182 and 218 tools as bracketed alternatives, so the magazine can be sized for a family of parts that stays set up between runs.

04 How does the MB-4000H compare with the MB-5000HII?

The MB-5000HII is the next pallet size, 500 × 500 mm (19.69 × 19.69 in), with travels of 760 mm (29.9 in) in X and Y and 810 mm (31.9 in) in Z. The MB-4000H has a 400 × 400 mm pallet and a 560 × 560 × 625 mm volume. Both are listed with rapids equal to 2,362 ipm, and the MB-5000HII table shows 48 tools and a 26 kW spindle motor.