Okuma GENOS L250II
Key Specifications
Rapid Traverse
Spindle Power
Max Turn Length
max turning diameter
spindle nose
chuck size
How much does the Okuma GENOS L250II cost?
Estimated price range
Our best estimate for a cnc lathes / turning center in this class — not a quote from Okuma. Configuration moves it a long way.
Overview
A 6 in (165 mm) chuck and an almost square work envelope define the Okuma GENOS L250II: 280 mm (11.02 in) of maximum turning diameter against 290 mm (11.42 in) of maximum turning length. That proportion points at chuck work such as discs, flanges, bushes and short housings, far more than at shafts.
The spindle runs 30–3,000 rpm on a JIS A2-6 nose, and Okuma rates the motor at 11 kW (15 hp) for 30 min and 7.5 kW (10 hp) continuous. A 3,000 rpm ceiling is comfortable for steel and cast iron at the diameters a 6 in chuck holds. It does cap surface speed on small features and in aluminium, so on small-diameter work the cycle time will be set by rpm before it is set by power. Rapid traverse is listed as 25/30 m/min.
If the parts are longer, the GENOS L400II takes 500 mm (19.69 in) of length and 330 mm (12.99 in) of diameter on a JIS A2-8 nose with the same 11 kW (15 hp). The GENOS L2000-e goes the other way, to 230 mm (9.06 in) of diameter with 500 mm (19.69 in) of length and 15 kW (20 hp).
Full Specifications
| Parameter | Value |
|---|---|
| Max Turning Diameter | 280 mm (11.02 in) |
| Max Turning Length | 290 mm (11.42 in) |
| Spindle Motor Power | 11 kW (15 hp) |
| Spindle Nose | JIS A2-6 |
| Chuck Size | 6 in (165 mm) |
| Rapid Traverse Rate | 25/30 m/min |
| Power 30 Min | 11 kW (15 hp) |
| Power Cont | 7.5 kW (10 hp) |
| Spindle Speed | 30–3,000 rpm |
Specifications sourced from okuma.com — verified 2026-10-03
Strengths & Limitations
Strengths
- 280 mm (11.02 in) maximum turning diameter on a machine built around a 6 in (165 mm) chuck
- Spindle motor rated 11 kW (15 hp) for 30 min and 7.5 kW (10 hp) continuous
- Rapid traverse of 25/30 m/min, so moves between cuts are brief on such a short envelope
Limitations
- Maximum turning length is 290 mm (11.42 in); the GENOS L400II and the GENOS L2000-e both list 500 mm (19.69 in)
- Spindle speed tops out at 3,000 rpm, which holds back surface speed on small diameters
- No bar capacity is listed for this model, so bar-fed work needs confirming with Okuma
Best For
Frequently Asked Questions
01
Maximum turning diameter is 280 mm (11.02 in) and maximum turning length is 290 mm (11.42 in), with a 6 in (165 mm) chuck. The envelope is about as long as it is wide, so the machine suits short chucked parts.
02
11 kW (15 hp) for 30 min and 7.5 kW (10 hp) continuous, over a speed range of 30–3,000 rpm. The spindle nose is JIS A2-6.
03
When the parts are longer or wider. The GENOS L400II lists 500 mm (19.69 in) of turning length and 330 mm (12.99 in) of turning diameter on a JIS A2-8 nose, with the same 11 kW (15 hp) spindle power.
Videos
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Community Discussions
Troubleshooting and problem-solving
Links to community discussions. Summaries are editorial — visit the original thread for full context.
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