To complete your drive system both plastic sprockets and metal sprockets designed to work with the chain are available.Ĭorrect operating tension is an important factor in the satisfactory performance and life of a drive system. SDP/SI offers a wide selection of inch and metric dimensioned roller chain and ladder chain.
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Ladder chain is inexpensive and easy to install and can be found in many household appliances, vending machines and various timing and electrical devices. Ladder chain links interlock and are fabricated from wire. A properly lubricated chain can last more than 100 times as long as the same chain with poor lubrication. When space limitations are a factor or running at slow speeds, sprockets with less than 17 teeth can be used.Ĭhain life will vary appreciably depending on the way the drive is lubricated.For long service life and smooth performance, select sprockets with 17 or more teeth, but less than 67.The selection of a center-distance that insures a chain wrap of at least 120° (meshing with at least 1/2 of the teeth) on the smaller sprocket.The shortest pitch single strand chain which has the required “design horsepower” rating when used with the desired size sprocket at the selected sprocket speed.The most economical chain drive selection usually consists of a Other drive components offered are: PosiDrive, Synchromesh, round belts, flat belts, fractional H.P.
If your requirement is a non-standard width, on-hand timing belt sleeves can be cut to your exact need, often overnight for fast turn-around. Belt stock in fiberglass reinforced neoprene and polyurethane reinforced with steel tensile cords are also available. SDP/SI carries a large inventory of single and double-sided timing belts in standard inch and metric widths. Modifications, custom components or custom drive systems can be designed, engineered, manufactured, and assembled in-house. Sometimes, there are applications where the standard catalog item doesn't meet all your apllication's requirements. Our engineers can assist in the selection of a standard catalog item to meet your need. SDP/SI offers a broad range of off-the-shelf inch and metric timing belts, timing belt pulleys, chains, and sprockets timing pulleys in aluminum, steel or plastic with or without metal inserts, metal hubs, set screws or Fairloc® hubs.įor over 70 years we have helped design engineers build synchronous drive systems. components in more advantageous locations at larger distances without paying a price penalty. Synchronous drives can be divided into 3 categories:īelt drives are particularly useful in applications where layout flexibility is important. SDP/SI supplies hobbyists, students, distributors and a wide variety of OEMs with high-quality machined timing belt pulleys, molded pulleys, timing belts, sprockets, and chains at affordable prices.
However, chain drives are often used where positive synchronization between shafts and transmission of substantial torque is required. The positive nature of these drives makes them capable of transmitting large torques and withstand large accelerations. Due to this design, they do not slip and there is no relative motion between the two elements in mesh. Synchronous drives employ the positive engagement of two sets of meshing teeth.
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