How to Measure a Trailer Hub or Dust Cap to Find the Right Replacement Dust Cap
Question:
I have a golf cart trailer that I turned into a utility trailer. I just finished the trailer up and I have notice that my new dust cap fell off. Is there any way of measuring the old dust cap that I have that I replaced with the new. I really dont want to take the wheel off again.
asked by: Kevin
Expert Reply:
You can measure either the outer diameter of the part of the dust cap that fits into the hub OR the inner diameter of the hub where the dust cap goes using calipers such as # PTW80157. Calipers are needed because the measurement has to be as accurate as possible.
I also might be able to figure it out based on the outer bearing number which you should be able to see without taking the hub off.
Brandon C.
4/19/2020
Hello I measured my dust cover at 1.775 with digital calipers. I need two for my boat trailer and was hoping to find some bearing buddies.
Chris R.
4/21/2020
Products Referenced in This Question
4" Carbon Fiber Digital Caliper
- Hand Tools
- Measuring and Layout Tools
- Digital Calipers
- Carbon Fiber
- Performance Tool
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Product Page this Question was Asked From
Grease Cap, 1.988" OD Drive In - Qty 2
- Trailer Bearings Races Seals Caps
- Caps
- Standard Grease Cap
- 1.988 Inch O.D.
- TruRyde
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on Trailer Bearings Races Seals Caps
David N.
2/11/2020
MY hub measured 1.9996. Do I use a 2.0 cap or what size is correct?