| Parameter | Specification |
|---|---|
| Motor Model | XQ-5.5-5S |
| Motor Type | Series Wound DC Traction |
| Rated Power | 5.5 kW (7.4 HP) |
| Rated Voltage | 72V DC |
| Rated Current | 96 A |
| Rated Speed | 1500 rpm |
| Duty Cycle | S2-60min |
| IP Rating | IP21 (indoor / sheltered) |
| Insulation | Class F |
| Excitation | Series Wound |
| Mounting | B5 (flange) |
The XQ-5.5-5S is a series wound DC motor — it belongs to the brushed DC motor family. Current reaches the rotor through carbon brushes and a commutator, which is what 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). Compared with brushless DC motors, brushed DC motors cost less and need a simpler controller — which is why most 72V forklifts, tow tractors and industrial AGVs still run on them.
A series wound motor puts the field winding in series with the armature, so torque climbs as load climbs and peaks at standstill. That is the profile a battery vehicle needs: a strong pull-away from zero speed, then speed rising naturally as the load lightens. Rated 5.5 kW (7.4 HP) at 1500 rpm on a 72V battery, this model sits in the mid-power band of the 72V family — enough to move a loaded forklift or tow tractor, while staying lighter than the 7.5 kW and 8 kW units. The B5 flange bolts the motor straight to a gearbox or axle flange, the standard interface on forklift and tow-tractor drive units, and takes the reaction torque through the flange face. One rule with any series wound motor: never run it unloaded without a controller, because with no load the speed can run away.
Not sure which model fits your vehicle? Contact our engineering team with your battery voltage, vehicle weight, wheel size and mounting drawing for a matched drive solution.
Q: What is B5 flange mounting, and can it be changed?
A: B5 is a flange-only mount: the motor bolts to a mating flange on the gearbox or axle, with no feet. It is the standard interface on forklift and tow-tractor drive units because it centres the shaft precisely and takes the reaction torque through the flange face. If your frame has a foot base instead, we can supply B3 (foot); if it needs both, B35 (foot + flange). Tell us your mounting drawing at inquiry and we match it.
Q: Is IP21 enough for my application?
A: IP21 protects against finger contact and vertically falling water drops, so it is for indoor and sheltered use — warehouse floors, covered loading docks, enclosed cabs. It is not for rain, splash, washdown or dust-heavy outdoor work. If your vehicle goes outdoors or gets washed down, ask our engineering team for the IP44 version of this motor.
Q: What does 1500 rpm mean for vehicle speed?
A: Travel speed is motor rpm divided by your gear ratio, multiplied by wheel circumference. At 1500 rpm this model is a mid-speed traction unit — it suits mid-size wheels and normal warehouse travel rather than crawl-speed heavy pulling. Send us your wheel diameter and gear ratio and we will confirm the road speed before you order.
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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