Gates 4.25X2.00-IDL-Flat Flat Idler Pulley, 4.25" OD, 2.00" Face Width, 4.50" Width
Idlers are used to take-up extra belt length and provide adjustment for tensioning belt drives. Idler pulleys and sprockets can alter belt paths and clear obstructions. Recommended for drives with limited take-up or no center distance adjustment. Idlers may remain in a fixed location or may be adjustable to allow belt pre-tension take-up.