SKF Cooper split roller bearings and bearing units

Lubrication SKF Cooper split bearings and housings are designed for grease lubrication, although oil lubrication is possible. The lubricant should be selected based on the operating condi- tions of the bearing. Selecting a suitable SKF grease The assortment of SKF greases for rolling bearings provides adequate choice for most application requirements. These greases have been developed based on the latest knowledge of rolling bearing lubrication and their quality is continuously monitored. Table 9 Temperature ranges for greases Range Temperature – °C °F L Low < 50 < 120 M Medium 50 to 100 120 to 210 H High > 100 > 210 EH Extremely high > 150 > 300 Table 10 Load ranges for greases Load range Load ratio – C/P L Low ≥ 15 M Medium ≈ 8 H High ≈ 4 VH Very high < 2 Table 11 Speed ranges for grease lubricated bearings Speed range Speed factor Cylindrical roller bearings Tapered roller bearings nd m 1) – mm/min VL Very low < 30 000 < 30 000 L Low < 75 000 < 75 000 M Medium ≤ 270 000 ≤ 210 000 H High > 270 000 > 210 000 VH Very high – – EH Extremely high – – Lubrication 1) Speed factor nd m [mm/min] = rotational speed [r/min] x (bearing mean diameter [mm] = 0,5 (d + D)) Using LubeSelect and selection rules SKF LubeSelect is an online tool that lists SKF greases that fulfil the demands of your specified operating conditions. The analysis performed by the tool is based on generalized selection rules that have been carefully developed by SKF lubrication experts. The same selection rules are used in the SKF bearing grease selection chart , page 22 , where the following operating parameters are used for selecting a suita- ble grease: • temperature ( table 9 ) • load range ( table 10 ) • speed ( table 11 ) The most important technical specifica- tions for SKF greases are provided in Technical specifications for SKF greases , page 24 . For additional information about lubricant selection, refer to skf.com/lubrication . 21 1