The permissible operating temperature is mainly limited by the seals (table 1) and the lubricant. For temperature limits of SKF bearings and lubricants, refer to the relevant product information.The housing material does not set any additional temperature limits, except for very low temperature applications where impact strength could be a factor. The housing paint is heat resistant up to 80 °C (175 °F) material temperature or 100 °C (210 °F) ambient temperature. When temperatures outside the permissible range are expected, contact the SKF application engineering service.
In typical applications, 8.8 class hexagon head bolts in accordance with ISO 4014:2011 can be used together with washers in accordance with ISO 7089:2000 or 7090:2000. SKF housings can withstand loads resulting from tightening the attachment bolts to the torque values recommended by bolt manufacturers (→ product table). They are valid for oiled, but otherwise untreated, thread surfaces.If the bearing arrangement is subjected to heavy radial loads, it may be necessary to use stronger, 10.9 class bolts. SKF cannot guarantee that tightening to the recommended value will provide sufficient anchoring. Make sure that attachment bolts, dowels or stops, shoulder or guide ring can accommodate all occurring loads.