How to Measure a Trailer Hub for the Correct Size Grease Cap

Question

Question:

looking for dust caps rubber plugs and covers for 11\16 shaft 1995 model boat trailer I think its ez lube help

asked by: D

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Expert Reply:

You would need to measure the inside diameter of the hub opening to determine which cap size is needed. You would want to choose a cap whose outside diameter matches the inside diameter of the hub.

Some of the most common sizes are 1.980 inch, 1.986 inch, 2.441 inch and 2.717 inch. As you can see the sizes can differ by very small amounts. To measure accurately you may want to get a dial caliper so that you can be confident you are getting the correct size for your hub. I have included a link to our grease cap main page for you.

expert reply by: Chris O

0

Answer 1

You would need to measure the inside diameter of the hub opening to determine which cap size is needed. You would want to choose a cap whose outside diameter matches the inside diameter of the hub. Some of the most common sizes are 1.980 inch, 1.986…

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Answer 2

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…

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Answer 3

The Vesper Steel Modular Trailer Wheel #TA65VR was either made in Mexico or Brazil. When I reached out to my contact at Taskmaster he said those are the places that manufacture their wheels and without seeing a specific wheel he wouldn't be able…

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Answer 4

Even when stored in the somewhat controlled environment of a garage, tires are still subject to dry rot and flat spotting. Even if the tire tread has plenty of depth left and you can't see any cracking with the naked eye, the generally accepted…

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Answer 5

The CE Smith Post-Style Guide-Ons #CE27740 are lighted poles to help guide your boat on to the trailer. CE Smith does have Light Mounting Brackets for Post-Style Boat Trailer Guide-Ons #CE27650A were you could mount a set of stop lights like #2423056…

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Answer 6

The BTR and BT8 denotations refer to the spindle, not the trailer hub. The difference between a BTR and BT8 spindle is that the BTR spindle uses a 1.063" diameter L44649 bearing and the BT8 spindle uses a 0.99" diameter L44643 bearing. In…

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Answer 7

It sounds like you have a mobile home axle and are trying to convert it to something more serviceable. Mobile home axles have a "one-time use" construction and so there is a good chance that what you have will not match what is needed to…

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Answer 8

You can mount trailer axles above or below the leaf springs. The difference is just the amount of ground clearance that the trailer would end up having. The biggest advantage with the spring below the axle (trailer will be lower) is that you would…

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Answer 9

If you are looking for a grease cap PLUG with the TRP stamped on it chances are the Grease Cap Plug for E-Z Lube Grease Caps #RG04-010 would work for you, but to be certain you will want to measure the diameter of the grease cap hole. If it is 1.18…

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Answer 10

Many smaller spindles do not require a washer. You can add one if you desire, but many spindles like the 2,000 lb Dexter axles do not come with a washer and don't require it. If you want to add a washer like #SW1000 it will not negatively effect…

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Answer 11

The purpose of the grease cap is to protect the bearing and the axle from any dirt getting into the bearing, which would then damage the bearing, hub and axle. So it is a good idea to have caps on your axle. To get the correct size cap you would need…

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Answer 12

With your trailer being in an environment where it is exposed to both salt water and fresh water I would highly recommend going with a disc brake setup. There are much fewer components on the brakes to become damaged from the elements with disc…

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How to Measure a Trailer Hub for the Correct Size Grease Cap

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