N1-1/4-20S Rosta 1-1/4" Pitch Simplex Sprocket Wheel Set for Chain Tensioners

N1-1/4-20S Rosta 1-1/4" Pitch Simplex Sprocket Wheel Set for Chain Tensioners

Can be used with ROSTA tensioning arm SE45 (sold separately or as complete assemblies).

ROSTA Tensioner Devices - Maintenance-free tensioner systems for belt and chain drives. Easy to install, available in a range of standard sizes to suit various chain and belt sizes, wide range of accessories available.

Benefits from using ROSTA Tensioner Devices:

• Adjustable Tensioning Force using torsion angle scale
• Transmits a constant torque
• Prevents the polygon effect in chain drives
• Increases the chain contact arc
• Cause the slack side of the chain drive to run tautly which reduces noise

N1-1/4-20S dimension chart - all dimensions in mm unless indicated.

ISO Chain Ref	No. Teeth	W	L	Adjusting Range	Tensioning Arm
20B1	13	M20	100	40-80	SE45