DRIVING THROUGH LIFE

PowerTransmission company, based in England, has found lengthy experience in production of spare parts, and it is now a specialized manufacturer and supplier of Idlers, Tensioners, Belts, Pulleys, Conveyor belts, Rollers, Valves, Electric power steering parts and etc.

More importantly, though, beside the provision of endless custom belts and related accessories, PowerTransmission possesses an advanced laboratory, some high end equipment for the purpose of examination of spare parts ranging from raw materials, through to the final product. Also, PowerTransmission is incorporated with scientific research force and extremely cutting-edge machines. On this account and also the proper scientific infrustructure, quality and novelty about which the company care, PowerTransmission has been able to upsurge not only its production scope more and more, but also the communication with innumerable creditable companies across the globe.

Nerve a company tops others, unless enthusiasm is part of it …

Tensioner

Belt tensioners help to ensure that the correct amount of tension is applied to the belt. The force may be applied by fixed displacement, spring force, or hydraulic pressure.

The fixed displacement tensioners do not have automatic regulation and absorption of stroke generated by the engine and indeed the engine requires more visits and observation. The spring mechanism creates tensile force in both semi-automatic and automatic way. There is a pin in the automatic model that when all the components are in the right place, by removing that, the appropriate stretch is created. The hydraulic model is used when a great deal of dynamic load is applied to the belt. These forces are absorbed by an even arm that is attached to a small hydraulic cylinder. The compressed spring in the hydraulic cylinder generates the initial force.

The tensioner is used in order to:

  1. Generate the appropriate strength in the belt.
  2. Transfer the force of motion from crankshaft to other pulleys properly.
  3. Prevent the belts from sliding on the pulleys.
  4. Be the prevention of the unwanted sound when the belt is out of its path.
  5. Diminish the place a belt takes.
  6. Absorb the shocks made by the engine.

Idlers

An Idler is a small pulley that helps the route and stabilizes the belt in its correct position. Depending on the size and length of the belt and engine, there can be one or more idler pulleys. An idler consist of two main components, bearing and pulley. The technology behind these bearings ensure extreme resistance to both temperature and high speed. Due to the use of special grade grease as well as high built quality, these idlers are maintenance free. A pulley is the outer part of the idler, where the belts are in contact in those areas. Pulleys are made of steel or plastic, polyamide mostly, with ribbed or smooth surface.

Idlers also play an important role in increasing the power transmission rate. With decreasing the contact angle between the belt and pulley, the contact area of the belt on the pulley increases, which leads to higher efficiency in power transmission and lowers the risk of belt failure.

Pulleys

Pulleys in automotive industry are made of metals which sometimes have flanges in one or both sides. They can be categorized in three sections, Ribbed belt pulleys, Timing belt pulleys, and V-belt pulleys. Ribbed belt pulleys on the crankshaft are used in order to transfer the power of the engine to rotate pulleys of the power generator, compressor cooler and the hydraulic pump which is managed with its special design, shocks and the force between the crankshaft and other parts. It has a three-piece construction, the inner piece is metal and middle pieces is plastic and metal outer to which the belt is mounted. The middle piece role in term of function, like elastic couplings, is the elimination of shocks.

Timing pulleys are used to rotate the camshaft and eventually the open and the close the valves. Depending on the number of reduce of the tooth profile, it is divided into HTDD, HTDA, HTD2 and HTD models. These differences in tooth shape, lead to different amount of tensions between pulley and belt.