What is the hub face on an axle?
Trailer axle hub face is the distance from the outside of hub mounting flange to outside of hub mounting flange, measured one-half way between top and bottom of the hub. The hub face is also known as the mounting surface where the wheel studs are located.
How much end play should a preset bearing assembly have?
ACCEPTED PRACTICE. For decades, the heavy duty truck industry has accepted a recommended wheel end bearing setting of 0.001-inch to 0.005-inch of endplay.
Does the axle contain the Hub?
A wheel hub is the axle and bearing mechanism around which the wheel revolves. A full wheel hub assembly in most cases will include the wheel hub unit, the bearings, seals and sensors. Without the wheel hub, your vehicle will not turn as freely as it should, and handling would be extremely difficult.
How do I measure my hub size?
Place a tape measure across the face of the exposed wheel hub, which it protrudes out from the center of the drum brake assembly. Take the measurement across the front of the hub, which is the diameter of the hub. Make sure your tape measure intersects the center of the hub. Write your measurement down.
How do you measure a face Hub?
The Hub Face measurement can be measured from the face of your hub or the back of the stud to the same location on the opposite side of the axle. If you have a 0 offset wheel which most trailer tires & wheels are, a good way to estimate this measurement is center of tire to the center of the other tire.
Does a PreSet hub has endplay?
“Now with the PreSet and the unitized hub, you don’t have to measure endplay when you do the installation. Because of the components and the close tolerance of the product, the endplay is controlled by the stack up of tolerances in the system.
What is proper wheel bearing endplay for a manual adjust hub?
- Manual Wheel Bearing Adjustment Procedures.
- The goal of this recommended procedure is to achieve a verifiable wheel bearing end play of 0.001” to 0.005” (.
- Step 1: Lubricate the tapered roller bearing with clean axle lubricant of the same type used in the axle sump or hub assembly.
- Initial Adjusting.
Where is the axle hub?
On each wheel, you’ll find the wheel hub assembly between the drive axle and the brake drums or discs. On the brake disc side, the wheel is attached to the bolts of the wheel hub assembly. While on the side of the drive axle, the hub assembly is mounted to the steering knuckle either as a bolt-on or press-in assembly.
How is hub face to hub face measured?
MEASURE HUB FACE TO HUB FACE ONLY 3. The only other measurement needed is the spring center. This measurement is from the center of one spring to the center of the opposite spring. This is a very important measurement as this is where your springs will sit on the axle.
Can you measure the hub of a broken axle?
If your axle is broken outside of the spring, there is still hope. You can still get the hub face measurement provided: You are still able to take a spring center measurement. One of the sides of the axle is intact. If that is the case, take the spring measurement as above.
Where do you measure the axle track on a truck?
2. We need your axle track measurement. This measurement is taken from the face of one hub to the face of the other hub where the rim touches the hub. DO NOT measure from the back of the hub or brake flange as this will provide an incorrect track measurement.
How do you measure the spring center of an axle?
You are still able to take a spring center measurement. One of the sides of the axle is intact. If that is the case, take the spring measurement as above. Then, on the good side, measure from the spring center to the outside hub face. Multiply that measurement times two and add it to the spring center measurement to obtain your hub face length.