31308 Metric Tapered Roller Bearing

31308 Metric Tapered Roller Bearing 40mm bore x 90mm outside diameter x 25.25mm width x 23mm cone width x 17mm cup width and max grease speed of 3800 rpm

Tapered roller bearings are classified as metric and inch series. Inch series tapered roller bearings have a special coding. Metric series bearings include 30000, 31000, 32000, and 33000 series and special size bearings. Tapered roller bearings can be disassembled. Line contact between rings and rollers are modified to make sure raceway forms have a crown on them so that the shoulder stresses are minimized. Tapered roller bearings can hold axial loads from only one side. Therefore, they need to be assembled with another bearing. The bearing is chosen based on the radial load ratings. These bearings should be close to its counterpart bearing as the changes in shaft temperature affects the bearing internal clearance. The internal clearance of the bearing should be chosen based on the counterpart bearing.