Bearing Buddy Grease Caps - BB1781
Provide your trailer wheel bearings with premium protection - replace your existing grease caps with Bearing Buddies. They install in seconds and provide an easy, safe way to monitor and control the level of grease in your axle hub.
Features:
- Replaces the grease cap in the axle hub
- Prevents wheel-bearing failure
- Keeps water and dirt out of hubs and bearings
- Allows boat trailer wheels to be completely submerged
- Stops corrosion and pitting on bearings
- Provides easily accessible grease fitting
- Makes adding grease to the bearings quick and simple
- Maintains slight, controlled pressure (3 psi) with spring-loaded piston, preventing water from entering hub
- Prevents overfilling and rear seal damage with automatic pressure-relief feature
- Grease seeps around piston edges and into barrel when full
- Constructed of stainless steel internal parts and triple-chrome-plated steel barrel
- Ensures longer-lasting fit than plastic or aluminum products
- Includes rubber covers
- Installs easily
- Made in the USA
Specs:
- Fits 1.781" hub bore
- Works with outer bearing model LM-11949
- Works with outer bearing cup (race) model LM-11910
- Lifetime warranty
Bearing Buddy OperationReplace your existing grease cap with a Bearing Buddy to ensure a safe, easy way to monitor and control the level of grease in your axle hub. To adjust the amount of grease in the hub, use a grease gun to add more through the appropriate fitting. Adding grease moves the Bearing Buddy spring-loaded piston outward 1/8".
The O-ring inside the barrel of the Bearing Buddy maintains a seal from the outside. The interior of the Bearing Buddy is pressurized, preventing water from entering the barrel and diluting the grease.
An automatic pressure-relief feature is built into the Bearing Buddy. When the device is full, grease will seep around the edges of the piston and into the barrel. This prevents overfilling that can damage the inner seal.
You can manually check the grease level in your Bearing Buddy by pressing on the edge of the piston. If you can rock or move the piston, the hub is properly filled.
41200 Bearing Buddy Model 1781 - Chrome Plated (Pair)
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Ask the Experts about this Bearing Buddy Grease Caps
- How To Tell What Size Bearing Buddy Is Needed for My Trailer Hubs
- The portion you need to measure is not the cap, but the the hub bore. Remove the grease caps and measure the diameter of the opening the caps occupy. This is the hub bore. You will need an accurate measuring devices like a set of dial calipers that is accurate to 3 decimal places.
The Bearing Buddy pair you were looking at, part # BB1781, fits a 1.781 inch hub bore. The measurement you find should match exactly or very close to one of the measurements displayed on the Bearing Buddy page I hav
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- Need Bearing Buddy for 2-1/8 Inch Diameter Trailer Hub Bore
- The closest Bearing Buddy we have to a 2-1/8 measurement is going to be a slightly larger set that measures 2.240 inches, # BB2240 or # BB2240SS. In order to determine the correct Bearing Buddy for your trailer, the best way is to get the inner and outer bearing numbers on the bearings and/or the number on the outer cup (race).
The Bearing Buddy part numbers listed above fit 1700 series outer bearings with race model 1729.
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- Trailer Bearing Protector for a Hub with a 2-1/16 Inch Bore
- I can determine the correct bearing protector if you can provide me with the inner and outer bearing numbers stamped into the metal of the existing bearings on the trailer. Otherwise, I will need the most accurate measurement possible of the hub bore using dial calipers.
We do not have a bearing protector that measures 2.0625 (2-1/16 inches) but normally they are slightly larger than the hub bore for a tight fit. You may need a 2.08 like # BB2080SS. Knowing the inner and outer bearing numbers
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- What Size Bearing Buddy to Replace 2-7/16-Inch Grease Cap
- The best way to measure hub bore to determine which Bearing Buddy size you need is with a digital caliper. If you do not own one you may be able to borrow or rent one from a local auto parts store.
Your other option is to obtain the outer bearing number from your trailer. You may be able to obtain the bearing number without having to pull it from the spindle; try wiping it clean of grease to see if the bearing number can be read.
The size you quoted, 2-7/16 inches, corresponds to 2.437 in
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- Choosing Correct Bearing Buddy Size for 2001 Coleman Taos Tent Camper
- The particular bearing buddy you reviewed, part # BB1781, fits a hub bore of 1.781 inches and an outer bearing number LM-11949
Trailer and camper manufacturers may use different components in their products from one production run to another, so the only sure way to know what bearings are used in your Coleman Taos camper is to pull the wheel and hub and check the outer bearing number. Please refer to the photo provided.
The next best method is to measure the hub bore using a digital calipe
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