Okuma MULTUS-U4000

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.

What the Okuma MULTUS-U4000 is used for

Okuma describes the MULTUS U4000 as a multitasking machine in the 8 to 10 inch chuck class, meant to finish a part in one setup by turning it and milling it with a 12,000 rpm milling spindle on a 240° B axis, with an optional second spindle and lower turret.

Source: Okuma America, an archived copy of the maker's page from 2014, October 27, 2026.

Okuma MULTUS-U4000 specifications

Figures as currently published; an older unit may differ in control generation and options.

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.
• Spindle load. The manufacturer gives 22/15 kW, [32/22] kW of spindle power. Take a heavy cut and watch the load meter.
• Spindle nose. The manufacturer gives a spindle nose of JIS A2-8 [JIS A2-11]. Check that the chuck fitted to it runs true.
• 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.
• Rapids and ballscrews. The manufacturer gives a rapid traverse of 50 m/min (Xa/Za); 40 m/min (Zb/Y); 25 m/min (Xb). Measure the backlash on each axis.
• Tool changer. The manufacturer gives the tool capacity as 40 [80], [120], [180]. Cycle every pocket and watch for a hesitation.
• Bed and ways. The manufacturer gives a max turning diameter of Ø650 mm and a max turning length of 1,500 mm / 2,000 mm. Check the ways for wear near the chuck.
• Rotary tools. The manufacturer gives the rotary tooling as 50 to 12,000. Check that the rotary tools still drive under load.
• Rotary axes. The manufacturer gives C-axis / indexing angle 360 (min controlled angle 0.0001) and B-axis / indexing angle −30 to +210 (min controlled angle 0.001). Run each rotary axis through its range.

Okuma MULTUS-U4000 control and manuals

• Control OSP-P500¹

In a 2024 video, Okuma says its OSP control holds the machine manuals already loaded, so an operator can open them at the machine, and that other PDF files load onto it from a USB drive.

Source: Okuma America, October 24, 2026.

Okuma MULTUS-U4000 listing history

Where it was listed

Filed under CNC Multi-Tasking Machines (Mill-Turn / Turn-Mill) (4).

Model years seen

2019, 2016, 2015 ×2, 2014.

What Okuma MULTUS-U4000 listings agree on

What affects the value of a used Okuma MULTUS-U4000

• Options. The units we tracked split on spindle speed (3,000 RPM on 2 machines, 4,200 RPM on 2 machines).
• Control. The manufacturer specifies OSP-P500.
• Build year. The units we tracked were built from 2014 to 2019, across 4 model years, most often 2015 (2 units).
• Against the published figures. The manufacturer gives max spindle speed 45 to 4,200 [30 to 3,000], spindle motor power 22/15 kW, [32/22] kW, tool capacity 40 [80], [120], [180] and max turning diameter Ø650 mm.

Looking for an Okuma MULTUS-U4000 for sale?

We have tracked 6 Okuma MULTUS-U4000 listings on 4 marketplaces (machinetools.com, surplusrecord.com, exapro.com and revelationmachinery.com), model years 2014 to 2019. We buy Okuma MULTUS-U4000 machines and do not sell them.

2019 · 2016 · 2015 · 2015 · 2014 · year not given

Every Okuma MULTUS-U4000 we have tracked

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.

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