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How to Determine Bearings and Seals that are Needed for a Long Chih Trailer with 12 Inch Wheels  


Have a utility trailer 12 wheels about 8 years old Mfgd by Long Chih. Hub looks to be 1 diameter and the back shoulder where the seal would ride looks to be 1.25 need bearing and seal kits. The timken cross ref for the bearing is 30205M 9\KM1. Any ideas? Thanks in advance!


Expert Reply:

To get the correct bearings and seal kit for your Long Chih trailer, you will want to get the part numbers that are stamped on the bearings of your trailer. There will be an inner and an outer bearing number. With those part numbers, I will be able to determine the bearings and seal you will need for your trailer.

You can also measure the inner diameter of the seal and the outer diameter. The measurements have to be as accurate as possible so I recommend using dial calipers to measure it.

Another way to determine the bearings and seal you will need is to use a dial caliper and measure the bearing and seal dimensions of the spindle on your trailer. Again, these have to be as accurate as possible. See the photo that will show where to measure on your spindle.

The measurement of 1.25 inches you have referenced for the inside dimension of your grease seal will be either the TruRyde seal, part # 34823 which is a single lip seal, or the TruRyde seals, part # RG06-010 if you needed double lip seals. Both seals will have an outside dimension of 1.983 inches.

The TruRyde Bearing Kit, part # DL21792 you have referenced has the # 34823 seal mentioned above and the inner and outer bearings are the same number # L44643. This bearing has an inside diameter of 1 inch.

I am including a link to a FAQ page on trailer spindles that will show the dimensions of the trailer spindles that I carry.

expert reply by:
Jeff D
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