Can be used with either sprocket wheel sets or belt tensioning rollers (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