Technical Data Sheet: 255-BZZS48-250
Ratings at 1,000 RPM
| Duty | Power | Torque |
|---|---|---|
| Continuous — 250 Arms | 11.6 kW | 110.7 Nm |
| 60 minutes — 312 Arms | 14.5 kW | 138.1 Nm |
| 15 minutes — 500 Arms | 22.8 kW | 218.1 Nm |
Peak output is 34.5 kW and 314 Nm at 750 Arms.
Specifications
| Model number | 255-BZZS48-250 |
|---|---|
| Frame size | 255 |
| Motor type | PM synchronous, surface magnet |
| Rated voltage | 48 VDC |
| Rated power | 11 kW |
| Peak power | 34.5 kW |
| Rated torque | 110.7 Nm |
| Peak torque | 314 Nm |
| Rated speed | 1,000 RPM |
| Rated / peak current | 250 Arms / 750 Arms |
| Rated frequency | 83.33 Hz |
| Torque constant | 0.442 Nm/Arms |
| Voltage constant | 0.458 Vrms/rad/s |
| Rotor inertia | 0.027341 kg·m² |
| Phases / power factor | Three phase / ≈ 1 |
| Efficiency | Designed for 93% |
| Winding | Star / Y, 100% copper |
| Insulation class | H, >500 MΩ at 500 VDC |
| Protection class | >IP64 |
| Magnet | NdFeB |
| Shaft | Hardened EN 24 |
| Core | Cold rolled silicon steel |
| Bearings | 6008-2Z/C3, 6006-2Z/C3 |
| Temperature sensor | PT 1000, 150 °C maximum winding |
| Cooling | Natural air, forced air optional |
| Weight | 67 kg |
| Mounting | Flange, foot |
110.7 Nm continuous at 1,000 RPM · 314 Nm peak · 255 frame
The 255-BZZS48-250 is an 11 kW 48 volt BLDC motor for equipment that spends most of its life at moderate load but has to break away hard. It holds 110.7 Nm continuously at 1,000 RPM on 250 Arms, and will produce 314 Nm at 750 Arms — close to three times its continuous torque.
That current headroom is what separates it from the rest of the 255 range. Continuous torque holds flat at 110.7 Nm from standstill to about 1,150 RPM, and the 314 Nm peak is available flat from zero to roughly 1,050 RPM before field weakening pulls it down — so the breakaway torque is there across the working band rather than at one point on the curve. It is a surface-mounted permanent magnet machine rated IP64, at 67 kg, and runs naturally cooled with the option of forced air where duty cycles are heavy.
Performance Curves
Where this motor is used
- Hydraulic power packs on compact construction and mining equipment, where the pump loads steadily but the relief cycle demands short bursts
- Traction and drive axles on electric and hybrid off-highway vehicles
- Augers, feed drives and loader functions on farm equipment
- Industrial automation duty where an IP64 enclosure and 67 kg flange mount suit a fixed installation
Applications
Related ratings
More torque, lower speed: 255-BDZS48-250 — 12 kW, 116.5 Nm at 900 RPM.
Similar output, different winding: 255-BEZS48-250 — 11.4 kW, 121.3 Nm at 900 RPM.
All models: 48 volt motor range.
Custom windings, shaft and flange variants, and integrated controllers are available.