Correct Dust Caps for 1.78" Hub Bore

Question

Question:

Hi Would you have a 1 7/8 Axle dust cap OD 1 7/8 that slips into axle thanks

asked by: Andrew J

0

Expert Reply:

Thanks for sending in your picture and a tape measurement of a 1-7/8" dust cap, but we don't have any dust covers with an outer diameter of 1.875". We have a bearing protector that is 1.78" in outer diameter, which is the Fulton Grease Cap - 1.786" Outer Diameter # F001503.The next size up is a 1.988" dust cap # RG04-020.

It's also possible that the hubs on your 1947 International KB-1 Truck have non-standard sizes. I highly recommend picking up a digital caliper like # PTW80157 to get an extra precise measurement to make sure you're getting the best fit for your truck.

expert reply by: Evangeline M

0

Dust cap with 1-7/8" measurement
(click to enlarge)

Answer 1

We do have a set of Bearing Buddy Bearing Protectors that may work for the older hubs on your somewhat fantastic boat trailer. The Bearing Buddy Bearing Protectors part #BB1810 are designed to fit a hub bore diameter of 1.810 inches, which is…

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Answer 2

It looks like the Fulton Grease Cap - 1.786" Outer Diameter - 1-9/16" Tall #F001503 is going to be slightly too small for your needs. The closest replacement grease cap we have to your 1.934" OD size is the Fulton #F001524…

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Answer 3

We have one option that may work for you as it is very close to 1.934 inches, but there isn't a cap available with that exact measurement. The cap with the closest diameter to that is the Fulton Grease Cap #F001524. This cap has a 1.943…

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Answer 4

For your hub that has a bore of 1.938 you would want the part #F001524 which has an outer diameter of 1.943 inches. This will fit your hub well.

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Answer 5

If there is any corrosion built up on the hub, it could be built up corrosion built up on the hub bore making the hole read smaller. Grease caps do not have to be very deep. They only have to go in far enough to fit snug and tight inside the hub…

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Answer 6

In order to pick out the correct bearing buddy you will need know the hub bore of your hub. To do this, remove the wheel and tire and remove the grease cap from the center of the hub. Usually it is a metal cap that is just lightly hammered into…

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Answer 7

Yes, you can use a set of Bearing Buddy Bearing Protectors on your 5th wheel trailer for easy maintenance. However, there are many different sizes so in order to find the correct one for your trailer you will need to obtain a digital caliper and…

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Answer 8

The closest Bearing Buddy to a hub bore that is 1-7/8 inches would be the Bearing Buddy part #BB1810 which is designed for hub bores of 1.81 inches. 1-7/8 inch in decimal form is 1.875 inch.

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Answer 9

The Bearing Buddy that is closest to the hub bore on your trailer is the Model 1810 #BB1810. These Bearing Buddies are available in a chrome plated finish and are designed to fit hubs with a hub bore of 1.810 inches.

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Answer 10

The grease cap you'll need for your 1.77 inch hub bore is from Fulton, part #F001503. The outside diameter at the base is 1.78 inches which is perfect, as it's meant to fit tightly. I've linked you to a product description video featuring…

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Answer 11

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 12

I checked the Bearing Buddy Bearing Protectors #BB1781SS in our warehouse and the measured in at 1-13/16" overall length. We do have the CE Smith Bearing Protectors #CE16270 which are 2" in overall length. The CE Smith has a 3/8"…

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