They are used in heavy duty applications where loads and speeds are greater than required for unground bearings-usually over 2000 RPM. Many are used on modern combines and hay baling equipment. Aetna V-belt idlers are available with single row bearings with a bore size to clear 1/2″ and 5/8″ bolts. Aetna belt idlers are generally used as tensioners or direction changers. Permanently lubricated and sealed against grime and dirt. Fit into existing design with little or no engineering changes or are readily adapted to new designs.
Advantages
Heavy gauge precision formed steel with double row of steel rivets with strengthening rib
Precision bearing for high capacity, lubricated and sealed for life
Solid steel bushing to provide proper mounting clearance
“Weep” holes to prevent water build-up
Basic radial load rating of precision bearing is 1,820 pounds