A chain drive mechanism includes a chain extending around a drive sprocket and a driven sprocket for transmitting torque therebetween. The chain drive mechanism also includes a snubber including one or more guide shoes, each having an engagement surface that contacts a side of the chain between the drive sprocket and the driven sprocket. The engagement surface of the guide shoe defines a recess with an opening therein, with the recess configured to convey lubricant fluid, such as oil, from the chain and through the opening by motion of the chain along the engagement surface. The recess has a wedge shape including two side walls converging toward the opening, and a floor that slopes downwardly away from the engagement surface and toward the opening. The snubber includes one or more guide shoes that are inside, outside, or some combination of inside and outside of the chain.

A chain drive mechanism includes a chain extending around a drive sprocket and a driven sprocket for transmitting torque therebetween. The chain drive mechanism also includes a snubber including one or more guide shoes, each having an engagement surface that contacts a side of the chain between the drive sprocket and the driven sprocket. The engagement surface of the guide shoe defines a recess with an opening therein, with the recess configured to convey lubricant fluid, such as oil, from the chain and through the opening by motion of the chain along the engagement surface. The recess has a wedge shape including two side walls converging toward the opening, and a floor that slopes downwardly away from the engagement surface and toward the opening. The snubber includes one or more guide shoes that are inside, outside, or some combination of inside and outside of the chain.

A laminated sprocket assembly is provided formed of a plurality of layers that are connected together. Each of the layers is a stamped sheet metal layer having a plurality of spaced apart teeth located around a periphery thereof. The teeth in the plurality of connected layers are aligned. At least one of voids, channels, openings, or recesses are located in or between at least some of the layers for receiving and holding lubricating oil. This reduces noise and wear.

A laminated sprocket assembly is provided formed of a plurality of layers that are connected together. Each of the layers is a stamped sheet metal layer having a plurality of spaced apart teeth located around a periphery thereof. The teeth in the plurality of connected layers are aligned. At least one of voids, channels, openings, or recesses are located in or between at least some of the layers for receiving and holding lubricating oil. This reduces noise and wear.

Provided is an apparatus for supplying lubricant to a timing chain installed in an engine, the apparatus including an injection hole configured for injecting lubricant from an oil pump, and an inner cover having a guide groove configured to receive lubricant injected from the injection hole and guide the lubricant toward a engagement place between the timing chain and a sprocket, wherein the inner cover has a guide groove provided at a position facing an injection hole of a counter surface portion that is spaced apart from a cylinder block and faces the guide groove.

Provided is an apparatus for supplying lubricant to a timing chain installed in an engine, the apparatus including an injection hole configured for injecting lubricant from an oil pump, and an inner cover having a guide groove configured to receive lubricant injected from the injection hole and guide the lubricant toward a engagement place between the timing chain and a sprocket, wherein the inner cover has a guide groove provided at a position facing an injection hole of a counter surface portion that is spaced apart from a cylinder block and faces the guide groove.

A bicycle chain lubricant that may be applied as a coating on a bicycle chain is a crystalline solid at ambient temperatures, yet when the chain is in motion the forces around internal components locally transforms the coating to a lubricous fluid. This increases chain efficiency in the drive train and reduces ware by limiting water and dirt access to chain internal components.

A bicycle chain lubricant that may be applied as a coating on a bicycle chain is a crystalline solid at ambient temperatures, yet when the chain is in motion the forces around internal components locally transforms the coating to a lubricous fluid. This increases chain efficiency in the drive train and reduces ware by limiting water and dirt access to chain internal components.

An object of the present invention is to provide a chain drive system capable of reducing sliding resistance between a chain and a guide shoe, suppressing an increase, over time, in sliding resistance, and reducing wear on the guide shoe. A chain drive system according to the present invention includes a chain having a plurality of chain plates, a plurality of sprockets on which the chain is wound, and one or more guides each including, integrally or separately, a guide shoe having a chain-running surface, and slidably guiding, in presence of lubricating oil, the chain. At least one of the plurality of chain plates has a lubricant region retaining a solid lubricant.

A transfer case includes a primary shaft, a secondary shaft radially offset from the primary shaft, and a torque transfer mechanism. The primary shaft includes a central channel and an inclined fluid channel. The torque transfer mechanism is configured to selectively transfer torque from the primary shaft to the secondary shaft, and includes a primary sprocket coupled to the primary shaft for transferring torque to the secondary shaft. The inclined fluid channel is associated with the primary sprocket, and includes an outlet that axially overlaps the primary sprocket.