Roller chain sprocket with resilient cushion rings and root...

Roller chain sprocket with symmetric cushion rings

Roller chain sprockets oriented to minimize strand length...

Roller chain tensioning device

Roller chain timing drive having reduced noise

Roller chain transmission device

Roller chain transmission device

Roller chain transmission device

Roller chain wave gear drive

Roller chain with randomized pitch

Roller variator for actuating continuously variable...

Roller, especially a tension roller for a belt drive

Rollerless chain having sprocket-engaging pins

Rolling bearing for belt driven continuously variable...

Rope or chain hauling pulley

Rotary actuating hydraulic tensioner

Rotary cutter assembly

Rotary device of variable diameter

Rotary hydraulic automatic tensioner

Rotary pump