Mounted Roller Bearings

Proper bearing installation and uninstall are essential for ensuring your mounted roller bearing unit performs to the best of its ability. Please see below standard instructions:
Step 1 - Shaft Preparation

Wipe the shaft clean and remove any burrs that could restrict the installation or deform the bearing ring when the setscrews are tightened down. Proprt shaft diameter is critical! Check the shaft diameter against the specifications shown in the setscrew size and tightening torque table below. Undersized shafting is one of the leading causes of reduced bearing life. If the shaft is not within the tolerance shown in the below table, use may result in reduced bearing life.
Step 2 - Mounting

Slide the bearing on the shaft to the desired position. Do not use anti-seize style lubricant on the shaft or bearing. Leave any set screws loose on the shaft.
Step 3 - Base Preparation

Make sure that the base of the mounted bearing and support surface are clean and flat. Any unevenness in the surface can interfere with proper bearing alignment and lead to premature failure. Securely fasten the mounted bearing to the support surface using the machinery manufacturer's recommendations.
Tightening Concentric Locking Colar

Note: we recommend applying an anaerobic locking compound to cap screws before tightening. A general-purpose, medium-strength option like Loctit 243 thread-locker is acceptable.
Begin tightening both set screws down alternately until both set screws are locked to the shaft at the proper torque shown in the table below.
Roller Bearing Removal Instructions
Loosen the set screws from the shaft. Then unbolt the housing from the support surface. Often the bearing will adhere to the shaft. In this situation, use a bearing puller or hammer and drift to remove the bearing.

For spherical flange cartridge units (SFC type), there are threaded removal holes to aid in backing the housing out of the cartridge hole. These removal holes are designated by dimension "S," and the appropriate thread size is listed for each housing in the SFC bearing chart above. For convenience, pry slots are located 90 degrees from the threaded removal holes.

The load rating table below is intended as a general tool for determining how loads and speeds imposed on a bearing will affect the overall life of the unit. By finding your desired L10 life and speed, you can determine the approximate radial load that will be suitable for your desired bearing life.
Note: L10 life is the number of hours the bearings listed will operate before 10% of the bearings fail. This means 90% of bearings will last longer than the L10 life. Decreasing bearing loads will have an exponential effect on the fatigue life of a unit. For more information on bearing life, see the next selection.
When to Use Below Table
"I know my bearing speed and want to find the right shaft size and load rating to give me the life I need."
Example: If you have an application that will run 1,000 RPM and will be 3,500 LBS. A 2-3/16" bearing will give you just under 10,000 hours. If you need 30,000+ hours of L10 life, you should select the next bearing size up. A shaft size of 2-7/16" will have an L10 life closer to 50,000 hours.

Note: Loads Are Listed in Pounds.

The limiting speed of a bearing unit is greatly affected by the fit between the bearing bore and the shaft. The values listed in the table below are based on ideal mounting conditions, including an interference (press) fit between the bearing and the shaft. For typical mounting conditions like the shaft tolerances listed in the table within the install instructions table, the listed maximum speed can be reduced by up to 25%. If your shaft is outside these listed tolerances, your maximum speed may be significantly lower than the speeds listed in the table below.

Please utilize our below troubleshooting guide for some of the more typical circumstances that occur with mounted roller-bearing units. For additional assistance, contact our customer support team; we will gladly assist you!