Timing Idler Pulleys. Complete with Needle Roller Bearing.

• Timing pulleys combined with timing belts, provide power transmission without slippage.
• The timing belt idler spins on the shaft rather than transimitting torque from the belt. This allows for an adjustable idler shaft to be able to modify the tension of the timing system.
• Can be used directly on shafts with a surface hardness of RC 58 or higher.
• Can be run on hardened Inner Rings.
• See also Drive Tighteners. 12.7mm Bore models can be run directly on the drive tighteners.