15
Nov
Also consider spindle size when reusing existing hubs or drums. 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.
In either case the hub face hf measurement is measured to the same place the outside face of the hub that holds the tires on.
How to measure trailer spindle size. The spindle measurements are labeled A through F. A is the spindle shaft diameter B is where the grease seal sits C is where the inner bearing sits D is where the outer bearing sits E is the thread diameter at the end of the spindle for the nut F is the spindle shaft length I have also included a link to our spindle. The spindle dimensions are as follows.
A is the mounting dimension B is the seal dimension C is the inner bearing surface D is the outer bearing surface and E is the diameter of the threaded portion of the spindle for spindle nut selection. Say you need a spindle and hub for a wheel with 5 on 4-12 inch bolt pattern and an axle that is 3500 lbs. It is best to measure the spindle and hub with a digital caliper like part PTW80157.
The tirewheel combo you mentioned part AM3H490 is rated to be able to handle a maximum load of 1650-lbs at 90 psi. The pilot hole on the combo is 28-inches diameter. There are only a handful of trailer bearing sizes.
They are pretty standard. My trailer axle spindle is 84 so the innerouter race bearings and seal are 1. You will need to measure the diameter of the spindles where the seal and bearings ride.
Check out the picture I attached that shows where this is. You will need an exact measurement so either a digital or dial caliper will be needed. This video illustrates how to figure out the size of your trailer hub so you can get the appropriate sized replacement.
There are a few common spindle sizes found on Trailer Axles rated at 3500lbs or less. These are the most common axles found on Boat Trailers Small to Medium Sized Utility Trailers Snowmobile Trailers and more. There are 4 main areas of importance on the spindle to consider when purchasing a Trailer Hub or Bearings.
You will need to pull one of the existing hubs and check for a number stamped inside the bearings themselves or measure along the spindle where they sit to get their inner diameters. The gross axle weight and hub to accomidate the tire also load rating will dictate bearing sizes and axle dimensions. Obviously the hub will be the important factor since it has a certain taper bearing spacing.
If you have some clean axle stub left over it is no big deal to make up. A user with the Tip to Tip beam measurement to determine the Hub Face measurement needed for the purposes of ordering replacment beams. For example if the Tip to Tip T2T beam measurement is 53 for a 22K Axle following the chart below for the 22K Spindle End to End Measurement the user would subtract 4562 from 53 to.
The spindle can be measured using calipers. The sizes for bearings and seals can be found by measuring the locations marked out below. The measurements on the spindle will act as the inner diameter measurement on your bearings and seals.
Spindles vary from manufacturer to manufacturer so there is no definitive list of bearing and seal sizes that will fit your spindle. Determining an A Type Spindle and Size. Measure the pilot diameter and length B C Measure the bolt circle diameter F1 and F2 and diameter of the holes E1 E2 Check the number of bolt circles one for A2 mount or two for A1 mount All chucks with A1 mount can be installed on A1 spindle nose only.
How to determine what axle you have. Most common utility trailer axles fall into two types and only three sizes. Rubber Ride Torsion no springs Conventional Leaf Spring either straight or dropped Typical Rating.
Axle tube OD Size spring axle only Spindle Number. Outer Bearing ID Size. How do i measure spindle diameter for new hubs.
Run to the hardware store and get a set of cheap calipers. You can also eyeball a tape as its held across the spindle. Now on the good side measure from the center of the spring to the tip of the spindle and multiply that by two and add to the spring center measurement.
If any of this is at all confusing give us a call at Champion Trailers at 800-229-6690 and well be happy to answer your questions or step you through it. Also consider spindle size when reusing existing hubs or drums. Trailer Axle Hub Face.
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. Also consider spindle size when reusing existing hubs or drums.
HOW TO MEASURE A TRAILER AXLE. MOUNTING A TRAILER AXLE. Many trailer axles are cambered or road set so there is a bow until weight is put on the axle.
All cambered axles should be mounted with the center bow up. Determine the location of the inner bearing on the spindle the smooth metal surface closest to the middle of the trailer. Measure the width of the spindle in this location with a digital caliper.
Close the caliper arms around the spindle and read the measurement on its display. How to Measure a Trailer Axle. The measurement from the face of one hub to the face of the other.
The face is where the wheel sits against the hub The measurement from the center of one spring pad to center of the other. Generally adding 2 to the Spring Center measurement can determine the Frame Width Also check out the common axles. How to Measure Your Boat Trailer Axle.
Measure the overall length of the axle including the end of the spindle. How to measure a trailer axle. In australia the maximum trailer width is 25 metres.
In either case the hub face hf measurement is measured to the same place the outside face of the hub that holds the tires on. You are still able to take a spring center measurement. Typical trailer wheel sizes range from 14-to-18-inch with 4 lug 5 lug 6 lug or 8 lug patterns.
The lug pattern measures the diameter around the circle formed by the lugs on the wheel. Two numbers designate lug patterns the first is the number of lugs on the wheel and the second is the distance measured across from each lug or the diameter.