| Parameter | Specification |
|---|---|
| Motor Model | XQ-8-3S4 |
| Rated Power | 8 kW (10.7 HP) |
| Rated Voltage | 72V DC |
| Rated Current | 135 A |
| Rated Speed | 1600 rpm |
| Duty Cycle | S2-60min |
| IP Rating | IP21 (indoor / sheltered) |
| Insulation | Class F |
| Excitation | Series Wound |
| Mounting | B5 (flange only) |
The XQ-8-3S4 is a series wound DC motor — it belongs to the brushed DC motor family. Current is fed to the rotor through carbon brushes and a commutator, which gives very high starting torque and a wide speed range. The trade-off is brush wear: brushes are a normal service item (typically replaced every 1,000-2,000 operating hours depending on duty cycle). Compared with brushless DC motors, brushed DC motors are cheaper and simpler to control — that is why most 72V battery tuggers, tow tractors and material-handling trucks still use them.
A series wound motor places the field winding in series with the armature, so torque rises sharply as load increases and is highest at standstill. That is exactly what a vehicle needs: a strong pull-away from zero speed, then a natural speed increase as the load eases. The XQ-8-3S4 is rated 1600 rpm at 8 kW (10.7 HP) on a 72V battery, with B5 flange-only mounting. The 8 kW output and 1600 rpm rating give a strong mid-range traction profile — ideal for an electric tugger dragging heavy carts, a tow tractor on a ramp, or a low-speed utility vehicle, where steady pull at low to mid speed matters more than top speed. With IP21 and Class F insulation it is built for indoor warehouse and factory duty.
Not sure which model fits your vehicle? Contact our engineering team with your battery voltage, vehicle weight and speed requirement for a matched drive solution.
Q: Can the XQ-8-3S4 pull a heavy electric tugger or tow tractor?
A: Yes. At 8 kW (10.7 HP) on 72V with a 1600 rpm rated speed, this series wound motor delivers high torque at low speed — the exact profile an electric tugger or tow tractor needs to start a heavy cart from rest and keep pulling on ramps. Series wound motors produce peak torque at standstill and taper as speed rises, so they suit load-pulling far better than a high-speed motor would.
Q: Is IP21 protection enough for my application?
A: IP21 protects against finger contact and vertically falling water drops — it is rated for indoor and sheltered industrial use (warehouses, factory floors, enclosed cabs, covered loading docks). It is NOT for outdoor rain, washdown or immersion. Tuggers and material-handling vehicles that run indoors are a good fit; if your vehicle works outdoors or gets hosed down, ask our engineering team about IP44 or higher.
Q: What is the standard lead time?
A: Standard lead time is 15-25 working days for sample orders and 25-35 working days for bulk orders, shipping from Shanghai or Ningbo port. Confirm exact lead time for your volume at inquiry.
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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