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Repair parts accessories

Bearing Protectors by Bearing Buddy®. Pair. Trailering, even a short distance, heats the hubs. When the wheels are submerged during launching, the hubs suddenly cool and the air inside the unprotected hubs contracts, forming a vacuum which draws in water through the rear seals. There is no such thing as a rotating seal that stays perfect. Water and grit thus drawn into the hubs relentlessly destroy bearings. When properly installed and maintained, Bearing Buddy® prevents wheel bearing failure and eliminates bearing repacking. Boat trailer wheels can be completely submerged.

Bearing Buddy


  • Prevents wheel bearing failure on boat, snowmobile, ATV, RV, and utility trailers
  • Eliminates bearing repacking
  • Keeps water and dirt out of hubs and bearings
  • Grease level easily checked
  • Life-saver for millions of bearings while towing a trailer
  • Prevents wheel bearing failure and eliminates bearing repacking
  • Keeps water and dirt out of hubs and bearings for the ultimate in bearing protection
  • Makes it easy to check a grease level
  • Built with stainless steel components for rock-solid strength and corrosion resistance
  • Proven in use for over 35 years and billions of miles of driving across brutal terrain

These trailers, because they are not used regularly, are also subject to bearing corrosion and failure from condensation moisture from air sucked into hot hubs as they cool. Moisture stays in the hubs causing rust and pitting until they are reheated when the trailer is used again. Some trailer manufacturers are offering an oil bath system as an alternative to a standard bearing protector, such as Bearing Buddy®. They claim that since long haul trucks use this system it must be a superior system to a grease packed hub. What they fail to recognize is that America's highways are the perfect environment and application, as the constant miles and tire rotation keeps the bearings well lubricated. Boat trailers, however, operate in a completely different environment. The hubs on a trailer can heat up during long trips and when they are dipped into cool lake water, the sudden temperature change creates a vacuum inside the hub. This vacuum will draw any condensation, moisture, or impurities directly into the bearings, which can cause premature bearing failure.

Bearing protectors, such as Bearing Buddy®, make it easy to visually check the amount of grease inside grease packed hubs. The internal spring piston exerts about 3 p.s.i. against the grease to ensure that no water enters the hub when the hub is submerged during loading and unloading. When properly maintained, there are no voids inside the hub where condensation can form during winter storage. By comparison, oil bath hubs should be checked after every loading/unloading cycle to make sure water has not penetrated and diluted the oil. Small leaks can cause the oil to escape and once this happens, bearing failure is quick and complete within a few miles. Most oil bath hubs are only half filled with oil and must be carefully inspected to maintain the proper level. Too much or too little oil could cause problems. If a Bearing Buddy® is knocked off, it would still be possible to run for many miles without bearing failure. This would not be possible with an oil bath. Bearing failure would occur within a few miles.

The company began in Saugus, California in 1963 under the name of Aquappliances, Inc. The original owners were Bill Kampf and Denny Law. While working for Marquardt, a defense contractor in the Los Angeles area, Denny traveled between Los Angeles and Las Vegas many times. While on these trips, Denny discovered that he frequently saw boat trailers broken down on the side of the road with bearing failure. Denny and Bill soon realized there was a need for a bearing protector for boat trailers and as a result Bearing Buddy® was created. It took four years of hard work and sacrifice to get the product into the marketplace and build sales to the point where the company could survive. At one particularly difficult time in the early going, Bill and Denny decided to draw straws with the loser having to keep the company. But before this could happen, they received their first large order and were finally on their way.

In 1967, the business moved to San Marcos, California. By 1970, Aquappliances, Inc. began manufacturing its own line of axle assemblies to sell to trailer manufacturers. In 1974, Denny and Bill acquired some land in Puerto Rico and began construction on a new building, which would become the new manufacturing facility for Bearing Buddy. It became known as Bearing Buddy, Inc. By April of 1975, Bearing Buddys were produced in Patillas, Puerto Rico and Aquappliances, Inc. became the sole distributor of the Bearing Buddy product line. In 1980, Bill retired, but Denny and his wife Corkie continued to own the company until November of 2004, when it was sold to Carmen Rivas and Dan Jenkins. Carmen began working for Bearing Buddy in 1975 and has been President of the company since 1998. Dan had worked for Aquappliances, Inc. for 23 years, beginning in 1973. Both Carmen and Dan share the same desire to continue the great Bearing Buddy tradition. Together, they will ensure that Bearing Buddy continues to be the best and most sought after trailer bearing protector in the world.


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