Bearing Buddy Recommendation for Trailer with Hub Bore of 1.975

Question

Question:

I measured the inside dia of the hub at 1.975. The old grease cap out of round at 1.79 fits loose. Not sure what size I need or what to measure! Trailer is old, could pull bearing but do I need to?

asked by: Pat G

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Expert Reply:

It sounds like the Bearing Buddy Bearing Protector # BB1968SS is exactly the Bearing Buddy you would need since it is designed for 1.968 in hub bores and your measurement is very close to that.

If you wanted to be absolutely sure I would recommend you pull the outer bearing to see what you have. You most likely will have a M-12649 or 07100 bearing, and if you do then the # BB1968SS would be the correct kit for you.

expert reply by: Jameson C

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Answer 1

The closest Bearing Buddy Bearing Protectors we have to matching the 1.975" inner hub bore diameter you measured are part #BB1968 for Chrome or #BB1968SS for Stainless Steel (rust resistance). As you mentioned in your question these are designed…

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Answer 2

For a standard grease cap close to your original's 1.975-inch diameter you can use part #F001610 which is 1.960-inches. If your hubs are not threaded, then for a Bearing Buddy protector you can use stainless steel part #BB1968SS or chrome-plated…

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Answer 3

Trailer wheel bearings are specific to the spindle that is installed on the axle that is on your trailer. You will need to safely support the trailer, remove the wheel and tire, remove the grease cap, remove the cotter pin and washer that secures the…

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Answer 4

Neither of those Harbor Freight trailers has brake mounting flanges on the spindles. To add electric brakes you would have to have brake mounting flanges welded on. This is a precision job that requires a special jig and someone with experience in…

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Answer 5

For your dust cap that measures 1-15/16 inches (1.937 inches), the Bearing Buddy part #BB1938 that you referenced would be the correct part confirmed to fit.

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Answer 6

It is best to use a Digital Caliper #PTW80157 to determine the exact size of your hub bore to find the correct size cap. A 1.988" Cap #F001518 is the most commonly found size on current 2,000lb and 3,500lb axles. We do also have a couple Bearing…

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Answer 7

For a hub bore of 1.97 inches going with a Bearing Buddy part #BB1968SS would be the closest match. The .02 inch difference would only mean the Bearing Buddy would fit slightly easier.

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Answer 8

Bearing Buddy does have a size that is slightly smaller than the 1.98 inch one you already tried with the #BB1968 or stainless steel #BB1968SS. It's .012 of an inch smaller in diameter which sounds like exactly what you are looking for.

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Answer 9

You need to use the inner diameter of your hub bore to determine what size Bearing Buddy you need. If you measured the outside diameter and chose your Bearing Buddy on that, then it will not fit. If you measured the inner diameter, then as you said,…

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Answer 10

The Bearing Buddy Bearing Protectors- Chrome Plated #BB1980A or Stainless Steel #BB1980A-SS will fit your hubs. The difference of 7/1000ths of an inch is so close that some digital calipers don't even read it. These drive in protectors will work…

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Answer 11

To find the correct size Bearing Buddies you can take a set of calipers, dial or digital, and measure the diameter of the hub bore. Part #BB2047 fits a bore size of 2.047 inches. Part #BB2080 fits a hub with a 2.080 inch bore. You will need to…

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Answer 12

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Bearing Buddy Recommendation for Trailer with Hub Bore of 1.975

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