Technical Data Sheet: 145-BZS24-040
Ratings at 4,800 RPM
| Duty | Power | Torque |
|---|---|---|
| Continuous — 40 Arms | 0.9 kW | 1.9 Nm |
| 60 minutes — 50 Arms | 1.2 kW | 2.4 Nm |
| 15 minutes — 80 Arms | 1.9 kW | 3.8 Nm |
Peak output is 2.9 kW and 5.8 Nm at 120 Arms.
Specifications
| Model number | 145-BZS24-040 |
|---|---|
| Frame size | 145 |
| Motor type | PM synchronous, surface magnet |
| Rated voltage | 24 VDC |
| Rated power | 900 W |
| Peak power | 2.9 kW |
| Rated torque | 1.8 Nm |
| Peak torque | 5.7 Nm |
| Rated speed | 4,800 RPM |
| Rated / peak current | 40 Arms / 120 Arms |
| Rated frequency | 320 Hz |
| Torque constant | 0.045 Nm/Arms |
| Voltage constant | 0.047 Vrms/rad/s |
| Rotor inertia | 0.000328 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 | 6206-2Z/C3, 6206-2Z/C3 |
| Temperature sensor | PT 1000, 150 °C maximum winding |
| Cooling | Natural air, forced air optional |
| Weight | 8 kg |
| Mounting | Flange, foot |
1.8 Nm continuous at 4,800 RPM · 5.7 Nm peak · 145 frame
The 145-BZS24-040 is a 900 W 24 volt BLDC motor for high-speed continuous duty. It holds 1.8 Nm at 4,800 RPM drawing 40 Arms, and will take 5.7 Nm in short bursts at 120 Arms — three times continuous, from a motor weighing 8 kg.
This is the top of the 145-BZS24 ladder. That family holds roughly the same 1.8 to 1.9 Nm across every member and uses current to buy speed: 1,800 RPM at 16 amps, 2,400 at 20, 3,000 at 26, 3,800 at 32, and 4,800 here at 40. Choosing between them is therefore not a torque decision at all — it is a question of how fast the load needs to turn and how much current the controller can supply. If the driven equipment is a fan, a pump impeller or a compressor, where delivered output rises steeply with shaft speed, the fastest winding the drive can feed is usually the right one.
At 4,800 RPM on an eight-pole rotor the drive sees 320 Hz. That is a real constraint and should be checked before specifying: not every 24 V controller intended for traction will commutate cleanly at that frequency, and one that cannot will either derate or run rough. The rotor is light at 0.000328 kg·m², the same as the smaller BZS windings, so the machine spins up quickly and does not punish frequent starts. Torque stays flat to rated speed before field weakening takes over, and the motor is naturally cooled — no fan, no auxiliary supply, nothing extra to fail.
Quality and compliance
Manufactured at our ISO 9001:2015 certified plant in Faridabad, India. Designed and tested to IEC 60034 — performance and rating to IEC 60034-1, IP64 enclosure to IEC 60034-5, mounting designations to IEC 60034-7, and Class H insulation to IEC 60085.
Every motor is individually tested before dispatch, not batch-sampled: winding resistance, insulation resistance, high-voltage withstand, back-EMF constant, no-load and loaded run, and temperature rise. Test reports are available on request.
Performance Curves
Where this motor is used
- Centrifugal pumps and blowers, where delivered output rises steeply with shaft speed
- Compressor and vacuum pump drives on 24 V mobile equipment
- High-speed conveyor, sorting and separation drives
- Test rigs and portable equipment where an 8 kg motor and no gearbox keep the package light
Applications
Related ratings
Same torque, one step down the speed ladder: 145-BZS24-032 — 0.7 kW, 1.9 Nm at 3,800 RPM.
More torque at the same speed, different frame winding: 145-CZS24-050 — 1.3 kW, 2.6 Nm at 4,800 RPM.
All models: 24 volt motor range.
Custom windings, shaft and flange variants, and integrated controllers are available.