| Parameter | Specification |
|---|---|
| Motor Model | XQB-4.5B |
| Rated Power | 3.5 kW |
| Rated Voltage | 45V DC |
| Rated Current | 98 A |
| Rated Speed | 1800 rpm |
| Max Speed | 3600 rpm |
| Duty Cycle | S2-60min |
| IP Rating | IP54 |
| Explosion Protection | Ex db IIB T4 Gb (gas group IIB, Zone 1 / Zone 2) |
| Excitation | Series Wound |
| Insulation | Class F |
| Mounting | B5 (flange mount) |
| Shaft | Configurable (confirm at inquiry) |
| Rotation | Configurable (confirm at inquiry) |
The XQB-4.5B is a series wound DC motor — it belongs to the brushed DC motor family. Current reaches the rotor through carbon brushes and a commutator, the same as compound and shunt DC motors. What makes the brushed design relevant here is ruggedness: with no fragile electronics on the rotor, the motor tolerates the shock, dust and heat of heavy industrial duty, and the whole assembly can be sealed inside a flame-proof enclosure.
A series wound DC motor draws its highest current — and therefore develops its highest torque — at zero speed. That is exactly what a conveyor, winch or pump needs when it has to break a load free from a standstill in a hazardous area. Once running, the speed falls as the load rises, which protects the drive mechanically. The rated speed is 1800 rpm; under light load the motor can run up to its 3600 rpm maximum, so it is fed through a 45V DC controller sized for the 98 A draw. The catch with a bare series motor is that it must never be run uncoupled (it can overspeed), so the controller is mandatory. The flame-proof Ex db IIB T4 Gb enclosure then does the safety job: any spark at the brushes or commutator is contained inside a heavy cast housing that cannot transmit an ignition to the surrounding flammable gas.
Not sure which auxiliary motor fits your hazardous-duty equipment? Contact our engineering team with your battery voltage, load type, certification zone and duty cycle for a matched flame-proof drive.
Q: Is the XQB-4.5B a traction motor or an auxiliary motor?
A: Auxiliary. The XQB-4.5B is a series wound DC motor for non-traction loads in hazardous areas — process conveyors, pumps, winches and mixers. It is not built to drive the main wheels. For main-wheel drive, see our series-wound DC traction motor range.
Q: What explosion-proof certification does the XQB-4.5B carry?
A: It is certified Ex db IIB T4 Gb — the flame-proof rating for industrial gas atmospheres (gas group IIB, Zone 1 / Zone 2). The cast enclosure contains any internal arc or spark so it cannot ignite the surrounding flammable gas. If your site is a different gas group (IIA / IIC) or has combustible dust, tell our engineering team your zone and group so we can advise the correct variant.
Q: Can you customize the voltage, mounting or shaft of the XQB-4.5B?
A: Yes. OEM/ODM is supported — 24V / 36V / 48V / 60V / 72V, B5 flange mount (this model) or B3 / B35 on request, the shaft and the duty cycle can all be customized. Send your equipment specification to our engineering team.
Baoluo is a traction-motor manufacturer based in Changzhou, China, with in-house production and load testing. The certificate above shows our factory certification.
Armature and stator winding on our production line. Every motor is hand-built and tested before shipment.
Warranty: 18 months from the delivery date. MOQ: 1 unit. Lead time: 1 month after order confirmation.
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