Chain guide wheel or drive wheel for tracked vehicle operating on snow piste has aluminum ring in contact with hard polyethylene toothed wheel with many bores in inner rim

摘要

Each drive wheel (1) may be turned by a hydraulic motor. Each drive wheel has a fastening ring (5) with many holes (6) to allow it to be bolted to a drive hub. It lies adjacent to a plastics ring with holes. The fastening ring may be made of aluminum and has a joggle leading to an outer portion (4) with teeth which reinforces a plastics gearwheel (2) with straight-cut external teeth. The aluminum reinforcing wheel fits into a groove or cutout (3) in the side of the plastics wheel.