Metric Sprockets Overview
TL Taper Bushed Metric Sprockets
TL Sprockets are stocked in a wide selection of sizes which includes ISO 06B, 08B, 10B, 12B, 16B and 20B chain sizes (3/8 to 1-1/4” pitch) for single, double and triple chain. These install with standard TL tapered bushings from 1008 thru 5050 (we.e., thru a 5” or 125mm shaft diameter). TL Sprockets are available in a wide variety of diameters to accommodate various application speeds. The more popular sizes are stocked with hardened tooth. The C45 material, standard steel sprockets, permits induction hardening of tooth. So all could be high temperature treated Hardened The teeth on demand. The TL Taper Bushed Sprocket provides a true concentric suit to the shaft. As the TL bushing screws are tightened, the bushing compresses around the shaft safely. Standard hex wrenches will be the only tool required for installation or removal. After the bushing installation screws are loosened and eliminated, the screw can be re-used and threaded into the bushing removal hole. Tightening the removal screw will gently loosen the sprocket. PTI stocks both metric and ” bore TL bushings, a typical global design, which is why the TL sprocket is so versatile. Ease of installation, concentric shaft match, suitable for higher speeds and heavy loads plus an economical price, make this the popular choice for new designs and replacement needs. TL sprockets are generally less expensive than customized or finished bored sprockets. Hub Type Metric Sprockets Hub Type Metric Sprockets can be found with a sprockets minimum simple bore (pilot bore) plus some share completed bore sizes. Any shaft size is possible with our custom made bore and keyway ability. Sprockets with hubs are typically suited to the shaft as a clearance suit. They are held set up with two arranged screws and a keyway. Clearance fits are popular for light loads and slow speeds. A press 
match (or shrink suit to the shaft) is usually favored for higher speeds or heavier loads as they match to the shaft more securely than a clearance fit sprocket. With respect to the clearance of the shaft match, sprockets may work somewhat on the shaft causing feasible fretting or shaft use. All standard hub sprockets can be found with hardened teeth from stock or on request. Press fits usually require the sprocket to become heated for set up to expand the bore. As a heated sprocket cools, it shrinks, conforming to the shaft with a tight grip. A set screw secures the key. The TL Taper Bushed Sprocket will function like the press suit sprocket and generally easier to install. Plate Type Metric Sprockets Plate Sprockets for solitary, dual or triple strand chain are an economical choice allowing for direct mounting to the customers’ hub or shaft. They are most regularly regarded for sprockets above 40 teeth and so are available in a wide selection of diameters. Plate type sprockets could be welded or bolted right to the users’ hub keeping products compact and light-weight. They are available in single, double and triple tooth configurations as well. Weld on Hubs A Weld-On-Hub is frequently used to simplify installation, especially huge diameter sprockets. PTI stocks regular TL Weld-OnHub sizes. The Weld-On-Hub uses the standard TL bushings as do many of the other standard drive parts. TL Bushings are stocked in both metric and ” bores. TL Bushings for Weld-On-Hubs or TL Bushed Sprockets TL Taper Bushings for Weld-OnHubs and sprockets are stocked from 1008 thru 5050 sizes covering 5” or 125mm shaft sizes. TL Bushings are ideal for replacements and a modern option for upgrading clearance fit and press fit sprockets. TL Bushings are found in a multitude of additional European and American standard drive products. STAINLESS Metric Sprockets Stainless Steel (AISI 304L) Metric Sprockets provide corrosion resistance and allow wash-down capacity. These hub type sprockets can be given a completed bore and keyway. Stainless Sprockets can’t be hardened. PTI stocks sizes from ISO 06B thru 16B (3/8” -1” pitch) and from 12 to 25 & 30 teeth. Larger sizes on demand. TL Bushed edition also on request. Metric Idler and Double-Single Sprockets Metric Idler Sprockets are plate sprockets with a ball bearing for mounting. These sprockets generally offer pressure for the chain drive and can be used within a tension arm assembly or individually mounted to put the drive. Share sizes are available for ISO 05B thru 20B metric chain sizes. Double-Single Sprockets, popular on conveyors, allow 2 single chains on a single sprocket to regulate pairs of rolls or drive products that must index. Custom Metric or ANSI Sprockets Custom sprockets including huge diameter steel or cast iron models for solitary, duplex or triple strand chain can be made to purchase. PTI typically keeps some stock in our European warehouse, so delivery could be rather quick. Additional custom made sprockets sizes for Metric conveyor chain or ANSI chain are also feasible. Drawings are preferred to insure requirements are obvious. Each is possible with custom finished bore.
