Spherical Plain Bearing FAQ - Commonly Asked Questions with Answers
Get answers to the most frequenly asked questions about spherical plain bearings.
Q: Is the Bronze Bushing supposed to turn?
A: No, the bronze bushing is press fit into the outersphere of the bearing shell and should not spin. If it is rotating, the spherical plain bearing is no longer working properly and will need to be replaced. View five signs of potential spherical plain bearing failure.
Q: Should the Spherical Plain Bearing Spin within the Housing?
A: Once the housing has been secured, the spherical plain bearing should not rotate within the housing.
Q: How do I ensure that the spherical plain bearing is lined up properly?
A: Install the shaft and tighten the mounting fasteners. Once this has been completed, tap the shaft lightly with a rubber or wooden mallet. This will cause the spherical plain bearing to pop into precise alignment. View our video on how to align your spherical plain bearings.
Q: What type of oil/grease should I use in my spherical plain bearing?
A: For our spherical plain bearings with an oil cup, we recommend using a standard, NON-DETERGENT, SAE 20 or 30 viscosity oil. Using a high-detergent automotive engine oil can contribute to premature bearing failure. For our spherical plain bearings with a grease fitting, we recommend a standard bearing grease be used and applied with a pressure gun at the time of installation. Learn more about all lubricants for Triangle's spherical plain bearings.
Q: How does the oil/grease get from the outer bearing shell onto the shaft?
A: For spherical plain bearings that are oil impregnated, the oil seeps through the porous material of the bushing onto the shaft. For spherical plain bearings that are impregnated with grease, Triangle drills a hole into the bushing so the grease can get to the shaft.