Okuma LB45III

Est. $220,000 - $350,000 Specs verified 2026-10-03 · okuma.com Updated 2026-10-03

Image: d30jruhmdicmo0.cloudfront.net, Okuma

Key Specifications

Rapid Traverse

15 / 20 [C: 100 rpm] m/min (591 / 787 [C: 100 rpm] ipm)

Spindle Power

37/30 kW (50/40 hp)

Max Turn Length

750 [1,000; 2,000; 3,000; 4,000] mm (29.53 [39.37, 78.74, 118.11, 157.48] in)

max turning diameter

660 [640] mm (25.98 [25.20] in)

spindle nose

A2-11 [A2-20]

bar capacity

118 mm (4.6 in)

How much does the Okuma LB45III cost?

Estimated price range

Est.$220,000 - $350,000

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 LB45III is a CNC lathe with a 660 mm (25.98 in) maximum turning diameter, a 118 mm (4.6 in) bar capacity and a 37/30 kW (50/40 hp) spindle on an A2-11 nose. A second turning diameter, 640 mm (25.20 in), is listed in brackets, which marks it as belonging to an optional configuration, so confirm which figure applies to the build you are quoted.

Bed length is the main decision. The standard maximum turning length is 750 mm (29.53 in), and Okuma lists 1,000, 2,000, 3,000 and 4,000 mm (39.37, 78.74, 118.11 and 157.48 in) as options. That takes one headstock and one 12-station turret from flange work to long shafts. The table has no rows for a tailstock or steady rests, so ask what work support comes with the longer beds.

The spindle runs 12 to 2,800 rpm as standard. Two alternative ranges, 10 to 2,400 rpm and 31 to 900 rpm, and an A2-20 nose are listed as options; the table does not say which range goes with which nose, so settle that on the quotation. Rapid traverse is 15 / 20 m/min (591 / 787 ipm), with an optional C-axis at 100 rpm. The LB35III below it turns 460 mm (18.11 in) and lists 30/22 kW as standard with 37/30 kW as its option, so the LB45III starts where the smaller machine's upgrade ends.

Full Specifications

Parameter	Value
Max Turning Diameter	660 [640] mm (25.98 [25.20] in)
Max Turning Length	750 [1,000; 2,000; 3,000; 4,000] mm (29.53 [39.37, 78.74, 118.11, 157.48] in)
Spindle Motor Power	37/30 kW (50/40 hp)
Spindle Nose	A2-11 [A2-20]
Bar Capacity	118 mm (4.6 in)
Turret Stations	12
Rapid Traverse Rate	15 / 20 [C: 100 rpm] m/min (591 / 787 [C: 100 rpm] ipm)
Spindle Speed	12–2,800 [10–2,400; 31–900] rpm

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

Strengths & Limitations

Strengths

660 mm (25.98 in) maximum turning diameter with a 118 mm (4.6 in) bar capacity
Turning length options from 750 mm (29.53 in) up to 4,000 mm (157.48 in) on one model
37/30 kW (50/40 hp) is the standard spindle rating, where the LB35III lists 30/22 kW as standard and 37/30 kW as its option
A2-11 spindle nose as standard, with an A2-20 nose listed for larger workholding

Limitations

Top spindle speed is 2,800 rpm, and the optional ranges stop at 2,400 rpm and 900 rpm, which limits surface speed on small diameters
Rapid traverse of 15 / 20 m/min (591 / 787 ipm) is slower than the 30/30 m/min (1,181/1,181 ipm) listed for the LB4000 EX III
The C-axis (100 rpm) is an option, and the table gives no driven-tool or Y-axis figures
Okuma's headline table has no chuck size or machine weight row, so foundation and workholding planning needs the full specification

Best For

Large flanges and discs up to 660 mm (25.98 in) in diameter Shaft work on the 2,000 to 4,000 mm (78.74 to 157.48 in) bed options Bar or tube stock up to 118 mm (4.6 in) through the spindle Heavy roughing that needs the 37/30 kW (50/40 hp) spindle

Frequently Asked Questions

01 What turning lengths is the LB45III available in?

Okuma lists 750 mm (29.53 in) as the standard maximum turning length and four longer options in brackets: 1,000, 2,000, 3,000 and 4,000 mm (39.37, 78.74, 118.11 and 157.48 in). Spindle power and the turret are listed once for the model, so the bed length is the main thing to decide.

02 What spindle does the LB45III have?

A 37/30 kW (50/40 hp) spindle on an A2-11 nose, running 12 to 2,800 rpm. An A2-20 nose is listed as an option, along with two alternative speed ranges of 10 to 2,400 rpm and 31 to 900 rpm. Bar capacity is 118 mm (4.6 in).

03 How does the LB45III compare with the LB35III?

The LB45III turns 660 mm (25.98 in) against 460 mm (18.11 in) on the LB35III. It also lists 37/30 kW as standard where the LB35III lists 30/22 kW with 37/30 kW as an option. Both have a 12-station turret and the same 15 / 20 m/min (591 / 787 ipm) rapid traverse.