High-output, high-rigidity spindle and motor
Rigid spindle for fast, heavy-duty turning
| ● | 3-point bearing support for steady, powerful cutting
(double-row cylindrical roller bearings plus highspeed duplex angular contact ball bearings) |
| ● | Housing cooled for minimal thermal deformation |
| ● | Unique labyrinth construction keeps coolant from penetrating spindle bearings |
Wide-range, full power cutting
Full-power cutting over a wide range—from low to high speed ranges—is possible with gear shift system
| ■Turning spindle LB35Ⅲ |
| 4 auto ranges (2 gears x 2 range motor coil switching) |
| Spindle speed | 3,200 min-1 |
| Max output | 30/22 kW (30 min/cont) |
| Max torque | 1,308/959 N-m (30 min/cont) |
| ■Turning spindle LB45Ⅲ |
| 4 auto ranges (4 gears) |
| Spindle speed | 2,800 min-1 |
| Max output | 37/30 kW (30 min/cont) |
| Max torque | 4,136/3,352 N-m (30 min/cont) |
Higher production efficiency with a multitasking turret
Multitasking V12 turret gives rise to highly efficient machining
L (lathe) and M (milling) tools can be mounted in all stations
■LB35Ⅲ (M), LB45Ⅲ (M) VDI specs
Quick change tooling system used
■LB45Ⅲ (MY) radial tooling specs
Powerful milling with high power, high torque motor
High speed, high power milling tool spindle
| ■Milling tool spindle LB35Ⅲ (M) |
| Spindle speed | 2,000 min-1 |
| Max output | 5.5/3.7 kW (30 min/cont) |
| Max torque | 80.8/54.3 N-m (30 min/cont) |
| ■Milling tool spindle LB45Ⅲ (M) |
| Spindle speed | 2,000 min-1 |
| Max output | 7.5/5.5 kW (30 min/cont) |
| Max torque | 187.2/71.5 N-m (30 min/cont) |
| ■Milling tool spindle LB45Ⅲ (MY) |
| Spindle speed | 3,500 min-1 |
| Max output | 15/11 kW (30 min/cont) |
| Max torque | 190/140 N-m (30 min/cont) |
Wide-range of variations
Process-intensive machining with the Y axis
1-chuck machining even with complexshaped workpieces (LB45Ⅲ MY specs)
| ● | A wide range of milling based on highly precise, wide-ranging Y axis travel with a double slide system |
| ● | Achieves process-intensive machining with 1-chucking |
The best tailstock with built-in center for machining shafts
| ● | Highly-rigid built-in center (standard);
Quill diameter LB35Ⅲ : ø120 mm, LB45Ⅲ : ø130 mm
Built-in tailstock MT. No. 5 |
Achieves steady machining with high dimensional stability
Machining dimensional change over time of ø17 μm (LB35Ⅲ actual data)
In addition to maintaining high dimensional accuracy when room temperature changes, Okuma's Thermo-Friendly Concept provides high dimensional accuracy during machine startup and machining restart.
To stabilize thermal deformation, warming-up time is shortened and the burden of dimensional correction during machining restart is reduced.
