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When backed into water for launching, boat trailer wheel hubs, heated by travel are suddenly cooled. Air inside contracts. A vacuum is created. Water and dirt are sucked into the hubs through the inner seals and corrosion sets in immediately. Bearing failure can be expected within two seasons in fresh water - one season in salt water.When properly installed and maintained, Bearing Buddy? prevents wheel bearing failure and eliminates bearing repacking. Boat trailer wheels can be completely submerged-safely. 

Bearing Buddy also prevents bearing failure on motorcycles, utility, snowmobile, camping and other trailers by eliminating moisture build-up in hubs and providing proper lubrication.Bearing Buddy? will last the life of your trailer and then some. The outer barrel and components are made of stainless steel.

Eliminates bearing repacking

Keeps water and dirt out of hubs and nsk bearings

Grease level easily checked

Easy to install

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 ntn 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

Replace 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 "Buddy bearings" is pressurized, preventing water from entering the barrel and diluting the grease.

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