IMPROVED CHAIN GUIDE AND TENSIONING APPARATUS

摘要

A chain guide and tensioning apparatus (10) for reducing friction and heat generated by said chain guide and tensioning apparatus (10) engaging a driven chain (16). A guide body (12) has an engagement surface (26) and a first aperture (54) extending through the guide body (12) and opening into the engagement surface (26). A guide face (14) at least partially overlays the engagement surface (26) and has a contact surface (44) configured to guide and tension the driven chain (16). A first recessed groove (46) is formed on the contact surface (44) and is in communication with at least one second aperture (48) extending through the guide face (14). The first aperture (54) is adaptable to receive and communicate oil from an oil source to the second aperture (48) and the first recessed groove (46) for reducing friction and heat from guiding and tensioning the driven chain (16).