Okuma Space Turn LB 4000EX II MY

Est. $450,000 - $700,000 Updated 2026-10-03

Key Specifications

Max Turn Length

3,000 mm (long bed)

max turning diameter

760 mm

swing over bed

1,020 mm

bar capacity

105 mm

main spindle speed

2,500 rpm

main spindle power

30 kW (40 hp)

How much does the Okuma Space Turn LB 4000EX II MY cost?

Estimated price range

Est.$450,000 - $700,000

Our best estimate for a cnc lathes / turning center in this class — not a quote from Okuma. Configuration moves it a long way.

Overview

The Okuma Space Turn LB 4000EX II MY is a large turning center with milling capability. The listed figures give it a 760 mm maximum turning diameter, 1,020 mm of swing over the bed and, on the long bed, 3,000 mm of turning length. Bar capacity is listed at 105 mm.

The main spindle is listed at 30 kW (40 hp), 2,500 rpm and 1,616 Nm of torque. That is a low-speed, high-torque combination: it suits heavy cuts at large diameters and limits surface speed on small ones. The slides run on box ways, a choice that favours rigidity and damping in roughing over fast positioning. No rapid traverse figure is listed.

For milling, the 12-station turret carries driven tools at up to 4,500 rpm, the Y axis travels ±60 mm and the C axis has a 0.001° resolution. That Y travel covers keyways, flats and off-centre holes near the centreline, not wide milled faces. The listed control is the Okuma OSP-P300L.

Treat these figures as a starting point. The 3,000 mm turning length applies to the long bed only, so confirm the bed length, bar capacity and spindle rating from the documents of the specific machine you are considering.

Full Specifications

Parameter	Value
Max Turning Diameter	760 mm
Swing Over Bed	1,020 mm
Max Turning Length	3,000 mm (long bed)
Bar Capacity	105 mm
Main Spindle Speed	2,500 rpm
Main Spindle Power	30 kW (40 hp)
Main Spindle Torque	1,616 Nm
Y Axis Travel	±60 mm
C Axis Resolution	0.001°
Turret Stations	12 (driven tools)
Driven Tool Speed	4,500 rpm
Guideway Type	Box ways
CNC Control	Okuma OSP-P300L

Specifications compiled from manufacturer literature and industry references. Not independently verified against a published spec sheet — confirm with the manufacturer or an authorised dealer before making a purchasing decision.

Strengths & Limitations

Strengths

Main spindle torque is listed at 1,616 Nm with 30 kW (40 hp), suited to heavy cuts at large diameters
760 mm maximum turning diameter and 1,020 mm swing over the bed
Up to 3,000 mm of turning length on the long bed
12-station turret with driven tools at 4,500 rpm, plus a Y axis of ±60 mm
Box ways and a C axis with 0.001° resolution are listed

Limitations

Main spindle speed is limited to 2,500 rpm, which holds back surface speed on small diameters
Y-axis travel is ±60 mm, so milling is confined to features near the centreline
The 3,000 mm turning length is for the long bed only; the listed figures give no length for other beds
No rapid traverse or machine weight figures are listed

Best For

Large shafts up to 3,000 mm long on the long bed Heavy roughing that uses the 1,616 Nm main spindle torque Turned parts with keyways, flats or cross holes within ±60 mm of Y travel Bar and tube work up to 105 mm through the spindle

Frequently Asked Questions

01 What is the turning capacity of the Space Turn LB 4000EX II MY?

The listed figures are a 760 mm maximum turning diameter, 1,020 mm swing over the bed and a 3,000 mm maximum turning length on the long bed. Bar capacity is listed at 105 mm. Check the bed length of the specific machine, because the turning length figure applies to the long bed only.

02 What milling capability does the Space Turn LB 4000EX II MY have?

The 12-station turret takes driven tools, listed at up to 4,500 rpm. The Y axis travels ±60 mm and the C axis has a listed resolution of 0.001°. That covers drilling, tapping and light milling off the centreline within the Y travel.

03 How powerful is the main spindle?

It is listed at 30 kW (40 hp) with 1,616 Nm of torque and a maximum speed of 2,500 rpm. The torque figure is the one that matters for large-diameter roughing; the speed ceiling is the limit to watch on small-diameter work.

04 Which control and guideways does the machine use?

The listed control is the Okuma OSP-P300L, and the guideways are box ways. Box ways favour rigidity and damping under heavy cuts. No rapid traverse rate is listed, so if cycle time on short moves matters, get that figure for the specific machine.