CNC Multi-Tasking Machines (Mill-Turn / Turn-Mill)

Okuma MULTUS-U4000

6 Okuma MULTUS-U4000 listings have come through the used market we track on 4 marketplaces, built from 2014 to 2019 where the listing gave a year.

650 mmMax turning diameter
30 hpSpindle power
78.74 inMax turning length
3,000 RPMSpindle speed; 4,200 RPM on others

What the maker publishes about the current Okuma MULTUS-U4000

Okuma's MULTUS U4000 is a multitasking lathe in the MULTUS U series, which is built on an orthogonal flat bed. Its maximum turning diameter is 650 mm and its maximum turning length is 1,500 mm or 2,000 mm. The motor row reads 22/15 kW, with 32/22 kW as an option. The magazine holds 40 tools, with 80, 120 or 180 optional. Okuma lists two spindle speeds, 3,000 and 4,200 min⁻¹, one of them in brackets as optional. Feature codes on the page are W for a sub spindle, 2S for two saddles, 2SW for two saddles with a sub spindle, and ATC for an automatic tool changer. For the series Okuma cites larger Y-axis travel, an optional second turret, higher drive capacity for the rotary tools, and an OSP control with a 21.5 in screen.

Source: Okuma, October 14, 2026.

Okuma MULTUS-U4000 specifications

Manufacturer specification. Every figure below was read from the manufacturer’s own published specification for this machine and checked back against that document word for word.

These are the manufacturer’s figures for this model as currently published. A machine built years ago may differ in control generation and in options, which is exactly why the questions below matter when you sell one.

Capacity and travels

Max turning diameterMax Turning Diameter
Ø650 mm1
Max turning lengthMax. turning length [mm]
1,500 mm / 2,000 mm2
Y-axis travelY-axis
300 (±150) (11.81 (±5.91))3

Spindle and speed

Max spindle speedSpeed
45 to 4,200 [30 to 3,000]3
Spindle motor powerMotor [kW]
22/15 kW, [32/22] kW2
Spindle noseNose shape
JIS A2-8 [JIS A2-11]3
Rapid traverseRapid Traverse Xa/Za
50 m/min (Xa/Za); 40 m/min (Zb/Y); 25 m/min (Xb)1

Table, turret and tools

Tool capacityNo. of tools
40 [80], [120], [180]2
Live toolingMilling tool spindle
50 to 12,0003

Control

ControlCNC control
OSP-P5001

Further figures the manufacturer publishes

Taper bore / Bearing dia
ø91/ø140 [ø112/ø160] (ø3.58/ø5.51 [ø4.41/ø6.30])3
C-axis / indexing angle
360 (min controlled angle 0.0001)3
B-axis / indexing angle
−30 to +210 (min controlled angle 0.001)3
  1. manufacturer specification page, fetched September 16, 2026.
  2. manufacturer specification page, fetched September 16, 2026.
  3. manufacturer spec sheet (PDF), fetched September 16, 2026.

What to check on an Okuma MULTUS-U4000

  • Control generation. The manufacturer specifies OSP-P500 for this model. Units we have tracked run 2014 to 2019; an early one may carry an older control or a retrofit.
  • Spindle. The manufacturer gives a spindle speed of 45 to 4,200 [30 to 3,000]. Run the spindle to top speed and listen for bearing noise.
  • Axes and way covers. The manufacturer gives Y 300 (±150) (11.81 (±5.91)) of travel. Run each axis end to end and check the way covers.
  • Tool changer. The manufacturer gives the tool capacity as 40 [80], [120], [180]. Cycle every pocket and watch for a hesitation.
  • Rotary tools. The manufacturer gives the rotary tooling as 50 to 12,000. Check that the rotary tools still drive under load.

Okuma MULTUS-U4000 listing history

Where it was listed

machinetools.com
2 listings, model year 2015
surplusrecord.com
2 listings, model years 2016 to 2019
exapro.com
1 listing, model year 2014
revelationmachinery.com
1 listing, model year 2015

Model years seen

2019, 2016, 2015 (2 units), 2014.

What Okuma MULTUS-U4000 listings agree on

Max turning diameter
650 mm
Max turning length
78.74 in
Spindle speed
3,000 RPM (2 machines); 4,200 RPM (2 machines)
Spindle power
30 hp

Every Okuma MULTUS-U4000 we have tracked

2019 Okuma MULTUS-U4000

Used · CNC Multi-Tasking Machines (Mill-Turn / Turn-Mill)

Spindle speed
3,000 RPM

2016 Okuma MULTUS-U4000

Used · CNC Multi-Tasking Machines (Mill-Turn / Turn-Mill)

Spindle speed
4,200 RPM

2015 Okuma MULTUS-U4000

Used · Metal Cutting

Spindle speed
3,000 RPM

2015 Okuma MULTUS-U4000

Used · Metal Cutting

2014 Okuma MULTUS-U4000

Used · CNC Multi-Tasking Machines (Mill-Turn / Turn-Mill)

Okuma MULTUS-U4000

Used · CNC Multi-Tasking Machines (Mill-Turn / Turn-Mill)

Spindle speed
4,200 RPM

The Okuma MULTUS-U4000 among lathes and turning centers

Browse all CNC Multi-Tasking Machines (Mill-Turn / Turn-Mill), or see every Okuma machine we track.

Models related to the Okuma MULTUS-U4000

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