Okuma LOC650
Key Specifications
Max Spindle
Tool Capacity
Rapid Traverse
Spindle Power
Max Turn Length
max turning diameter
Overview
The Okuma LOC650 is the larger sibling in Okuma's Lean and Compact production lathe series, stepping up from the LOC500 to handle parts up to 260 mm (10.2 in) turning diameter and 500 mm (19.7 in) turning length. It maintains the front-loading automation-friendly design philosophy while offering the capacity for mid-size shaft and chuck work that the smaller LOC500 cannot reach.
The spindle delivers 15/11 kW (20/15 hp) at up to 5,000 RPM with 180 Nm (133 ft-lb) of torque through an A2-6 spindle nose. Bar capacity is 52 mm (2.05 in), covering the most common bar stock sizes for small-to-mid production turning. The 8-inch hydraulic chuck is standard. The front-loading design with wide door opening continues the LOC philosophy of robot-friendly cell integration.
The 12-station turret uses VDI 30 tooling with optional driven tools for cross-drilling, tapping, and light milling operations. X-axis travel is 200 mm (7.9 in) and Z-axis travel is 500 mm (19.7 in) with rapid traverse at 30 m/min. The machine weighs approximately 4,800 kg (10,582 lb) and occupies a floor space of 2,100 x 2,000 mm (83 x 79 in).
Okuma's Thermo-Friendly Concept ensures dimensional stability across shifts, while Collision Avoidance System protects tooling and workpiece during setup. The OSP-P300L control handles turning and optional driven tool operations. An optional tailstock extends capability to shaft work, making the LOC650 more versatile than the inverted-spindle V-series machines.
The LOC650 competes with the Haas ST-10, Doosan Lynx 2100, and Nakamura-Tome SC-200. Pricing runs $150,000-$220,000 new. The machine targets production shops and job shops that need a compact, automation-ready lathe for mid-size parts without the footprint and cost of a full-size turning center.
Full Specifications
| Parameter | Value |
|---|---|
| Max Turning Diameter | Ø650 |
| Max Turning Length | 500 mm (19.7 in) |
| Max Spindle Speed | 5,000 RPM |
| Spindle Motor Power | 15/11 kW (20/15 hp) |
| Spindle Torque | 180 Nm (133 ft-lb) |
| Spindle Nose | A2-6 |
| Chuck Size | 203 mm (8 in) hydraulic |
| Bar Capacity | 52 mm (2.05 in) |
| Turret Type | VDI 30, 12-station |
| Tool Capacity | 12 stations (driven tools optional) |
| X Axis Travel | 200 mm (7.9 in) |
| Z Axis Travel | 500 mm (19.7 in) |
| Rapid Traverse Rate | 30 m/min (X and Z) |
| Tailstock | Optional |
| Machine Weight | 4,800 kg (10,582 lb) |
| Floor Space | 2,100 x 2,000 mm (83 x 79 in) |
| CNC Control | Okuma OSP-P300L |
| Speed Range | 5-500 [5-350] |
| Standard Power | 45/37 |
| Rapid Traverse X Z | 5 / 10 |
| Okuma Global Repair Center | Charlotte, North Carolina |
| Inches | Metric |
| Spindle Nose Type | A2-20 [725 flat] |
Specifications sourced from okuma.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Compact 2,100 x 2,000 mm footprint provides mid-size turning capacity in a floor space comparable to compact lathes
- Front-loading design with wide door opening enables easy integration with robots, gantry loaders, and bar feeders
- 12-station VDI 30 turret with optional driven tools adds cross-drilling and milling capability for more complete single-setup machining
- Optional tailstock extends capability to shaft work, making the LOC650 more versatile than disc-only inverted vertical lathes
- 52 mm bar capacity covers the most common bar stock sizes for small-to-mid production turning
- Thermo-Friendly Concept and Collision Avoidance System come standard, differentiating the LOC650 from entry-level competitors
Limitations
- 260 mm maximum turning diameter is smaller than full-size turning centers, limiting chuck work to smaller components
- 15 kW spindle power is modest for heavy roughing in stainless steel or titanium at the upper end of the diameter range
- VDI 30 turret is lighter-duty than VDI 40 for driven tool rigidity on harder milling operations
- OSP control is Okuma-proprietary; shops standardized on Fanuc or Siemens face a training curve
- 8-station turret on the LOC500 versus 12-station on the LOC650 may cause confusion when specifying within the LOC series
Best For
Frequently Asked Questions
01
A new LOC650 typically runs $150,000-$220,000 depending on driven tool options, tailstock, and automation peripherals. This positions it between entry-level lathes and full-size Okuma turning centers like the LB3000 EX III.
02
The Haas ST-10 costs roughly $60,000-$80,000 new, significantly less than the LOC650. The Okuma justifies its premium with Thermo-Friendly Concept, Collision Avoidance System, and generally tighter tolerance holding over long production runs. The Haas wins on purchase price, parts availability, and simple Fanuc-based control.
03
Yes, with the optional tailstock the LOC650 handles shaft work up to 500 mm turning length. This makes it more versatile than Okuma's inverted vertical lathes (VT series) which are limited to disc-shaped parts.
04
The front-loading design accommodates collaborative robots, gantry loaders, and bar feeders. The wide door opening provides unobstructed access for robotic load/unload. Bar feeder integration through the spindle bore supports unattended bar-stock production.
05
LOC stands for Lean and Compact. The LOC series is designed to minimize floor space while maximizing production capability and automation readiness. Both the LOC500 and LOC650 follow this design philosophy.
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