Shafting, horsepower transmitted

The difference between the brake horsepower and the water or liquid horsepower is the pump efficiency. The requirement in either case is the horsepower input to the shaft of the pump. For that reason, the brake horsepower represents the power required by the pump, which must be transmitted from the driver through the drive shaft through any coupling, gear-box, and/or belt drive mechanism to ultimately reach the driven shaft of the pump. Therefore, the losses in transmission from the driver to the pump itself must be added to the input requirement of the driven pump and are not included in the pump s brake horsepower requirement. 

Two basic factors guide frame and mnning gear design. The first factor is the maximum horsepower to be transmitted through the shaft and mnning gear to the cylinder pistons. The second factor is the load imposed on the... 

There is a wide variety of commercially available sprockets. While they may vary in design, methods of manufacture, and materials of constmction, they all have some common features. They will all have hardened teeth designed to mate with a specific type of chain, sufficient web strength to effectively transmit their rated horsepower or torsional forces, and a boss or hub that can be bored to the mating shaft s diameter. 

Flexible Coupled Shaft shall be provided to connect each motor and speed reducer assembly. The coupling flanges shall be (zinc-plated steel) (stainless steel) of the nonlubricated type with stainless-steel flexing disc rings. The shaft shall be hollow tube (stainless steel) (zinc-plated steel) of a sufficient size to adequately transmit the full rated motor horsepower. The shaft and coupling assembly shall be dynamically balanced. 

Power shafts function most efficiently when operated at high speed. The reason stems from basic engineering principles transmitted horsepower is directly proportional to speed. 

Roller chains are used in a wide variety of applications, but most roller chain is used in drives. The shaft speeds of the drives range from less than 50 rpm to nearly 10,000 rpm, and the amoimt of power transmitted ranges from a fraction of a horsepower to more than 1000 hp. The main design considerations for a roller chain to be used on a drive are the various tensile loads, certain types of wear, roller and bushing impact, and galling. 

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