Plain Bearings Simplicity ®
Temperature Simplicity bearings can operate in a wide range of temperatures (-400°F to +400°F) (-240°C to +204°C). Depending on the materials housed in the pillow block and the size of bearing • Maintains the same performance characteristics • The thin liner allows heat to dissipate through the bearing shell Thermal Expansion The standard bearing I.D. options are designed for use in most industrial applications. For temperatures below 0°F, the standard I.D. is recommended (FL series). For extreme high temperatures, the Compensated I.D. bearing is recommended (FLC) for the increased running clearance.
Temperature Extremes
Min
Max
+400°F +204°C
-400°F -240°C
Use FL
Use FLC
It is always best to inspect actual size at extreme . temperatures to ensure proper running clearance.
Maximum Rotary Speeds
Standard “FL” Max = 40 sfm
Rotary Applications Simplicity bearings will operate very well in rotary applications if applied properly. Stationary rotary applications do not allow the heat to be spread over an extended area. It is retained in the I.D. of the bearing limiting speed and load. • MAX rotary speed (No lube/continuous motion) • 40 sfm (12.2 m/min.) for standard precision I.D. clearances • 140 sfm (42.6 m/min.) for compensated I.D. clearances V(sfm) = 0.262 x d x RPM d = shaft diameter (inches) RPM = revolutions per minute • Properly maintained lubrication can increase these speeds dramatically
(12.2 m/min.) 0.0005" per side clearance average (0.0127 mm)
Shaft
Compensated “FLC” Max = 140 sfm (42.6 m/min.) 0.0015" + per side clearance average (0.0381 + mm)
Shaft
It is always best to do specific testing for rotary applications above these limits where lubrication is to be used.
Submerged Applications Simplicity bearings will provide excellent performance in a submerged condition. The bearings will employ the fluid as a lubricant showing increased velocities and wear life. Oils and non-salt water are especially effective. Note: Please contact factory before specifying FrelonGOLD for submerged applications.
Vacuums/Outgassing/Cleanrooms Due to self-lubrication, low outgassing, and a minimum of particulate (buildup), Simplicity bearings are excellent in clean rooms and vacuums. Testing has been done on the Frelon ® materials in accordance with ASTM E-595-90 with acceptable maximums of 1.00% TML and 0.10% CVCM. MATERIAL %TML %CVCM FrelonGOLD ® 0.00 0.00 Frelon J 0.18 0.01 TML = Total Mass Loss CVCM = Collected Volatile Condensable Materials
14 Round Shaft Technology • pbclinear.com
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