1. Product Overview TR21-2 is compact single row separable tapered roller bearing, standard dimension 105×125×10.3/12.5mm. Separable inner cone and outer cup allow independent assembly, disassembly and clearance fine adjustment. Tapered raceway and crowned rollers simultaneously bear combined radial load and one-way axial thrust, compact thin-width design saves limited axial installation space. Stable operation under medium load and slight vibration, widely applied in small