Split sprocket and retainer assembly

摘要

A split sprocket (12) and retainer assembly (10) are provided for mounting on the drive shaft (S) of a chain drive system, such as a conveyor drive system. The sprocket (12) is split diametrically into two sections (14) and includes a hub (28). Cross fixing bolts (44) across the hub secure the two sprocket sections together on the drive shaft. A one-piece retaining ring (16) is positioned over the sprocket hub (28) in snug engagement, and overlying the bolts. The retaining ring absorbs the thrust force generated by the driving torque tending to radially separate the sprocket sections during operation of the drive system. A split outer retainer collar (18) is mounted so as to abut the retaining ring and to secure it in position against axial shifting and backing off the hub.