SKF 21 Tooth Taper Bush Sprocket, PHS 08B-2TBH21 08 B-2

This sprocket is a toothed transmission component designed for use with 08 B-2 roller chain in industrial power-transmission systems. It provides reliable rotary drive engagement for conveyor, indexing and drive applications where standardised interfacing and straightforward mounting are required.

• Hardened steel construction provides wear resistance and longevity
• Taper bush Interface allows precise hub-to-shaft alignment
• Accommodates variable bore sizing for flexible shaft fits
• 21-tooth profile ensures consistent chain engagement and smooth drive
• BS standard conformity supports interchangeability in installations
• 25mm face width improves load distribution across chain links

• Suitable for conveyor drives using 08 B-2 chain
• Ideal for indexing mechanisms in automation equipment
• Used with gearbox outputs requiring a taper bush mounting
• Can be used for drive assemblies in electrical panel handling systems
• Suitable for retrofitting sprockets in mechanical production lines

It uses a tapered bush system that permits secure clamping to shafts within the bush’s bore range, allowing a tight interference fit without additional machining.

The steel construction provides high fatigue strength and resistance to repeated contact stresses from roller chain engagement.

The tooth form and pitch match the 08 B-2 chain pitch, ensuring accurate tooth-to-link engagement and reduced slippage during operation.

The taper bush allows axial adjustment and concentric tightening to achieve accurate radial runout and repeatable positioning.