Snug the adjusting nut tight while turning the wheel or hub 10 complete revolutions. This is to set the bearing into position and let the grease find home. Loosen the nut just enough to remove all preload. It will now be just shy of finger-tight .
Are my wheel bearings too tight?
The bearing is adjusted by tightening the hub nut if it is too loose, or loosening the nut if it is too tight. It should be done with the wheel on and raised on an axle stand. Rock the wheel from side-to-side and top-to-bottom to check for bearing wear.
How tight should bearings be?
The nut on the spindle should be tightened until snug , with no side-to-side play in the hub and then backed off, about a quarter of a turn. The nut finger should be tight until the castle nut or cotter pin is used.
How much play should tapered roller bearings have?
The bearing end play is equal to the total indicator movement, which should be between . 001 and . 005 inches . If you have not achieved the desired end play, repeat steps one and two.
Do tapered roller bearings need preload?
Some applications are set with cold preload to increase rigidity and axial positioning of highly stressed parts that would otherwise be dramatically affected by excessive deflection and misalignment. Excessive operating preload must be avoided as bearing fatigue life can be drastically reduced.
What happens if you over tighten axle nut?
It’s possible to damage the wheel, rotor, and hub assembly . The wheel can come off if over-torquing the nuts/bolts is done.
Can you put too much grease in a wheel bearing?
Too much grease volume (overgreasing) in a bearing cavity will cause the rotating bearing elements to begin churning the grease , pushing it out of the way, resulting in energy loss and rising temperatures.
What does it mean to preload a bearing?
Bearing Preload is the process of adding a sustained axial load, independent of external loads, to a bearing . ... Properly preloading a bearing can increase its life and eliminate the vibration and noise that results from specified clearance, manufacturing precision, and wear.
How do you test a tapered roller bearing?
Separable bearings such as tapered roller bearings may be checked by individually examining their rolling elements and the outer ring raceway . Large bearings cannot be rotated manually; however, the rolling elements, raceway surfaces, cages, and contact surface of the ribs should be carefully examined visually.
How do you check tapered clearance on a roller bearing?
After adjustment, the axial clearance of the taper roller bearing clearance is checked with a dial gauge . How to assemble tapered roller bearings and gears? When the gear is designed, it should have an axial positioning step, and the outer ring of the bearing should be stopped.
When should you preload a bearing?
“Preload is critical in most high-precision and high-speed applications, particularly where rotational and positional accuracy is required,” Wallace says. “If, under operating conditions, a bearing has radial play . This means that one bearing race can be moved radially and axially relative to the other.
What type of bearing requires a preload when installed?
Ball bearings . All radial ball bearings that require a preload must be loaded axially. When an axial load is applied to the inner ring of the bearing, the race of the inner ring comes in contact with the rolling element and translates this load to the raceway of the outer ring.
How do you preload a tapered wheel bearing?
It is very important to have the proper preload of the tapered roller bearings typically found in all tube, pipe and roll form mills. Preload is defined in this text as how many inch-pounds of rotational force are required to continually rotate a shaft when the tapered roller bearings are properly tightened.
How tight should I tighten an axle nut?
The nut on the spindle should be tightened until snug , with no side-to-side play in the hub and then backed off slightly, about maybe a 1/8 of a turn.
Can you over tighten CV axles?
No . Over tightening won’t put more of a strain on the bearings in this sort of design. You should’ve torqued those nuts down quite a bit.
How do you tighten axle nut?
Tighten the axle nut with a socket and torque wrench; torque the axle nut between 15 to 20-ft pounds of torque to preload the axle bearings. Rotate the hub eight to 10 revolutions by hand to fully seat the bearing races. Loosen the axle nut until it is freely loose, then finger-tighten the axle nut.
