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FR010 Technical Notes
Clearance Bearing Clearance: Diametrical clearance for FR010 pre-lubricated bearings are typically greater than conventional plain type bearings to allow for possible thermal expansion of the lining during operation. Shaft speeds tat exceed 50 fpm require additional clearance. For slower rotating speeds and oscillating motions the clearance can be minimal with bearing to shaft conformity. Shaft Surfaces and Finish FR010 bearings can be used with most conventional shaft materials with a hardness of HB200 or higher. PEER, Inc. recommends a shaft surface finish of 16 Ra µi (0.4 µm) or better. Lubricants FR010 pre-lubricated bearings are ideally suited and designed for use with grease lubrication. The selection for grease depends on several important application factors such as temperature, lubrication stability within the environment and the degree of possible foreign contamination. In most applications a premium quality, multi-purpose grease such as: Antioxidant Lithium Base or Calcium Based with EP Additives, Sodium Based or Calcium Based grease is recommended. |
Sizing FR010 bearings have a nominal 0.012 inch (0.3 mm) anti-friction layer that allows for ID sizing if desired. Several ID sizing methods are recommended for use such as broaching, reaming or boring. It is recommended that not more than 0.005 inch (0.127 mm) be removed from the liner; this will ensure sufficient indent depth to retain grease lubrication. Alignment FR010 bearings operate at their highest with proper shaft alignment across the entire bearing surface. However, FR010 bearings are well suited for demanding applications where shaft misalignments do occur. It is recommended that misalignments should not exceed 0.002 inch (0.05 mm). |
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