Okuma MULTUS U5000

Est. $700,000 - $1,100,000 Updated 2026-08-10

Key Specifications

Tool Capacity

40 tools

Rapid Traverse

Xa/Za 1,968 ipm; Zb/Y 1,574 ipm; Xb 980 ipm

standard chuck size

15 in

max machining diameter

650 mm (25.59 in)

max work length

1,500 / 2,000 / 3,000 mm (59.06 / 78.74 / 118.11 in)

spindle speed

30~3,000 min⁻¹

Overview

The Okuma MULTUS U5000 is the heavy end of the MULTUS U line: a horizontal multi-tasking machine with a 15-inch standard chuck, a tilting milling spindle, and bed lengths reaching 3,000 mm. Maximum machining diameter is 650 mm (25.59 in), and maximum work length is 1,500 mm, 2,000 mm or 3,000 mm (59.06, 78.74 or 118.11 in) depending on the bed specified.

The spindle is where the machine's character sits. It runs from 30 to 3,000 min⁻¹ on a JIS A2-8 nose, with an A2-11 nose optional, driven by a 37/30 kW (50/40 hp) motor rated at 30 minutes and continuous. A low ceiling combined with high continuous power is the signature of a torque machine: it is built to hold a heavy cut in large forgings, castings and bar rather than to spin fast, and the 30 min⁻¹ floor allows slow, controlled boring and threading under full load without a gear change.

The 3,000 mm bed is the option that changes the installation. At that length the machine measures 8,420 × 3,228 × 3,090 mm (331.50 × 127.09 × 121.65 in), against 5,530 × 2,995 × 2,955 mm (217.72 × 117.91 × 116.34 in) for the 1,500 mm version and 6,280 mm long for the 2,000 mm one. The long-bed machine grows in width and height as well as in length, so aisle clearance and crane coverage need confirming rather than assuming.

Rapid traverse is 1,968 ipm on Xa and Za, 1,574 ipm on Zb and Y, and 980 ipm on Xb, the axis lettering again reflecting an upper milling head and a lower saddle that can cut simultaneously. Tool capacity is 40 tools, and the W, 2S and 2SW specifications add a second spindle, a second saddle, or both.

This is a machine for long, heavy work: shafts, rotors, valve bodies, drill-string and pressure components in energy, aerospace and heavy industry, where the alternative route is a large lathe followed by a boring mill and a fresh datum on every part.

Full Specifications

Parameter	Value
Standard Chuck Size	15 in
Max Machining Diameter	650 mm (25.59 in)
Max Work Length	1,500 / 2,000 / 3,000 mm (59.06 / 78.74 / 118.11 in)
Spindle Speed	30~3,000 min⁻¹
Spindle Nose	JIS A2-8 [JIS A2-11]
Spindle Motor	37/30 kW (50/40 hp), 30 min/cont
Rapid Traverse Rate	Xa/Za 1,968 ipm; Zb/Y 1,574 ipm; Xb 980 ipm
Tool Capacity	40 tools
Machine Dimensions	5,530 × 2,995 × 2,955 mm (217.72 × 117.91 × 116.34 in); 6,280 × 2,995 × 2,955 mm (247.24 × 117.91 × 116.34 in); 8,420 × 3,228 × 3,090 mm (331.50 × 127.09 × 121.65 in)
Spec Extension	W, 2S, 2SW

Specifications sourced from okuma.co.jp — verified 2026-08-09

Strengths & Limitations

Strengths

A 37/30 kW (50/40 hp) spindle running from 30 to 3,000 min⁻¹ is a torque specification: built to hold a heavy cut in large forgings, castings and bar rather than to spin fast
The 30 min⁻¹ floor allows slow, controlled boring and threading under full load without a gear change
A 15-inch standard chuck on a JIS A2-8 nose, with an A2-11 nose optional, backs that torque with the workholding to use it
Bed lengths of 1,500 mm, 2,000 mm or 3,000 mm (59.06, 78.74 or 118.11 in) reach genuinely long work at the top end
An upper milling head and a lower saddle carry their own axes, so two cutting points can work at once on suitable parts
W, 2S and 2SW specifications add a second spindle, a second saddle, or both, with 40 tool pockets throughout

Limitations

Maximum machining diameter is 650 mm (25.59 in), the same as the smaller U3000 and U4000 - what the U5000 buys is spindle torque, chuck size and bed length, not swing
Spindle speed tops out at 3,000 min⁻¹, so small-diameter and aluminium work will not reach productive surface speeds
The 3,000 mm bed changes the installation entirely: 8,420 x 3,228 x 3,090 mm (331.50 x 127.09 x 121.65 in), growing in width and height as well as length
Forty tool pockets is the same allowance as the smaller machines, and the heavier tooling this machine invites fills them no more slowly
The lower saddle's Xb rapid is 980 ipm against 1,968 ipm on Xa - a plunging axis rather than a positioning one

Best For

Long, heavy work - shafts, rotors, valve bodies, drill-string and pressure components Energy, aerospace and heavy industry parts that would otherwise route through a large lathe and then a boring mill Large forgings and castings where holding a heavy cut matters more than spindle speed Between-centres work up to 3,000 mm (118.11 in) on the long bed Shops looking to remove a datum transfer from every heavy part

Frequently Asked Questions

01 What does the U5000 offer over the U3000 and U4000?

Not swing. Maximum machining diameter is 650 mm (25.59 in) across all three. What the U5000 adds is a 15-inch standard chuck, a 37/30 kW (50/40 hp) spindle against 22/15 kW on the smaller machines, and bed lengths reaching 3,000 mm (118.11 in). It is the torque-and-length machine in the family, not the large-diameter one.

02 Why does the spindle only reach 3,000 min⁻¹?

Because it is built around torque rather than speed. A 37/30 kW (50/40 hp) motor with a 3,000 min⁻¹ ceiling and a 30 min⁻¹ floor is the signature of a machine meant to hold a heavy cut in large forgings, castings and bar. The low end matters as much as the high: 30 min⁻¹ allows slow, controlled boring and threading under full load without a gear change.

03 How much floor space does the long-bed U5000 need?

The 1,500 mm machine measures 5,530 x 2,995 x 2,955 mm (217.72 x 117.91 x 116.34 in) and the 2,000 mm version is 6,280 mm long. The 3,000 mm machine is a different installation altogether at 8,420 x 3,228 x 3,090 mm (331.50 x 127.09 x 121.65 in) - it grows in width and height as well as length, so aisle clearance and crane coverage need confirming rather than assuming.

04 What do the W, 2S and 2SW specifications add?

W adds a second spindle, 2S adds a second saddle, and 2SW adds both. The rapid rates already reflect that two-carrier layout: 1,968 ipm on Xa and Za for the upper milling head, 1,574 ipm on Zb and Y, and 980 ipm on Xb, the lower saddle's plunging axis.

05 Is 40 tool pockets enough on a machine this size?

It is the same allowance as the smaller MULTUS U machines, and the larger, heavier tooling a 15-inch-chuck machine invites does not fill it any more slowly. On complex parts combining heavy turning with milling on both ends, count the tool list at quoting stage rather than assuming the standard capacity covers it.