Feb. 06, 2020
As a Wheel Manufacturer, let me share with you. After the outer bearing of the hub is aligned, turn the hub while screwing the bearing adjustment nut until you feel tight. When turning the hub by hand, then return the adjustment nut to 1 / 6-1 / 4 turn, and then tighten the lock nut . In some cars, when adjusting the tightness of the rear wheel wheel bearing, the bearing adjusting nut should be screwed in until the wheel is laborious to turn the nut, then the nut is slowly screwed out. Hang a spring scale on the wheel bolt of this wheel, and use the force of 2030 cattle to pull the wheel in the tangential direction (install the brake drum). It is suitable to just pull the wheel to rotate. For new bearings, the tension should be 70-90 N. When adjusting the tightness of the steering wheel wheel bearing, you must first tighten the adjusting nut and test it with a pulling force of 200-300 N. When you can just pull the wheel wheel, stop screwing in the nut and turn the hub from side to side for 2-3 turns. Loosen the adjusting nut until the wheel can be turned with a force of 10-25 N; some manufacturers stipulate that after tightening the adjusting nut with a certain torque, loosen the nut a certain number of turns, and then check Its axial clearance or the force required to pull it to start its rotation can be adjusted as necessary. For Mercedes cars, it is required to tighten the adjusting nut with a torque of 300 Nm, then loosen the nut 1/8 turn, install a thrust washer, tighten the lock nut with a torque of 500-550 Nm. This gap should be in the range of 0.03-0.05 mm. If the gap does not meet the requirements, it should be adjusted again until the gap is appropriate.
Wheel Hub Bearings
For another example, when adjusting the tightness of the ift bearing on the front wheel of a Nissan car, first tighten the adjustment nut with a torque of 400 Nm, turn the wheel 2-3 turns, and then loosen the nut 1 / 6-1 / 4 turns, turn the wheel Yi 2-3 turns again, and then use a spring scale to measure the pulling force when the wheel v starts to rotate, the pulling force should be adjusted to 55 Newtons; for some models, not only is it required to tighten the adjusting nut and lock with a certain torque Tighten the nut, and tighten and loosen the adjustment nut twice each. The tightening torque and the number of turns to loosen are also different. For example, in the Red Rock 261, when adjusting the steering wheel bearing tightness, first tighten the adjustment nut with a torque of 500 Nm, then loosen the nut by 1/4 turn, and then tighten the adjustment nut with a torque of 100 Nm, then Loosen back 1/8 turn, then install the lock ring and tighten the lock bolt of the lock ring with a torque of 25 Nm. When adjusting the tightness of the middle and rear Wheel Hub Bearings, first tighten the adjustment nut with a torque of 600 Nm, then loosen back 1/6 turns, and then tighten the lock nut with a torque of 800 Nm.
Our company also has Bearing Repair Kit on sale, welcome to consult.
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