Bearing Buddy

HOW BEARING BUDDY^® WORKS

The axle hub is filled with grease until the grease forces the Bearing
Buddy^® piston outward about 1/8 inch. Because the piston is spring
loaded, the piston exerts a slight (3 psi) pressure against the grease,
which maintains a slight pressure between the inside of the hub and
the outside environment. When the hub is submerged, water cannot
enter the hub because of this pressure.

An automatic pressure relief feature prevents over-filling and over
pressurization. Without this feature, the inner seal will be damaged.
Grease can be added to the hub through an easily accessible grease
fitting located in the center of the piston. Lubricant level (and pressure)
can be checked quickly by pressing on the edge of the moveable piston.

If you can rock or move the piston, the hub is properly filled. Bearing
Buddy^® will last the life of your trailer. The outer barrel is made of
steel and is triple chrome plated. Internal Bearing Buddy^® parts are
made of stainless steel. Bearing Buddy^® is also available with a
stainless steel barrel for maximum corrosion protection.

HOW TO SELECT THE RIGHT MODEL

• Pick a genuine Bearing Buddy^® to match your hub bore.
• To convert a model number to the hub bore in inches (or dust cap diameter),
  simply place a decimal point after the first digit in the model number.

Model #1781, for example, fits a 1.781” bore hole diameter.

* Hub Not Couterbored