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January 7, 2020

Metric Sprockets Overview
TL Taper Bushed Metric Sprockets
TL Sprockets are stocked in a wide variety of sizes which includes ISO 06B, 08B, 10B, 12B, 16B and 20B chain sizes (3/8 to 1-1/4” pitch) for single, dual and triple chain. These mount with standard TL tapered bushings from 1008 thru 5050 (i.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 teeth. So all could be high temperature treated Hardened Teeth on request. The TL Taper Bushed Sprocket offers a accurate 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 necessary for set up or removal. Once the bushing installation screws are loosened and removed, the screw is usually re-used and threaded into the bushing removal hole. Tightening the removal screw will lightly loosen the sprocket. PTI stocks both metric and ” bore TL bushings, a typical global design, which explains why the TL sprocket is so versatile. Ease of installation, concentric shaft fit, ideal for higher speeds and weighty loads plus a cost-effective cost, make this the favorite choice for new styles and replacement requirements. TL sprockets are generally less expensive than customized or completed bored sprockets. Hub Type Metric Sprockets Hub Type Metric Sprockets can be found with a minimum simple bore (pilot bore) plus some stock finished bore sizes. Any shaft size can be done with our customized bore and keyway capacity. Sprockets with hubs are typically suited to the shaft as a clearance fit. They are held set up with two established screws and a keyway. Clearance fits are well-known for light loads and slow speeds. A press suit (or shrink match to the shaft) is normally preferred for higher speeds or heavier loads as they fit to the shaft more securely than a clearance match sprocket. With respect to the clearance of the shaft fit, sprockets may work slightly on the shaft causing feasible fretting or shaft put on. All standard hub sprockets are available with hardened the teeth from stock or on ask for. Press fits usually require the sprocket to be 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 just like the press suit sprocket and generally simpler to install. Plate Type Metric Sprockets Plate Sprockets for solitary, dual or triple strand chain are a cost-effective choice allowing for immediate mounting to the customers’ hub or shaft. They are most frequently regarded for sprockets above 40 teeth and are available in a wide selection of diameters. Plate type sprockets could be welded or bolted directly to the users’ hub keeping apparatus compact and light-weight. They are available in single, dual and triple tooth configurations as well. Weld on Hubs A Weld-On-Hub is often used to simplify mounting, especially huge diameter sprockets. PTI stocks standard TL Weld-OnHub sizes. The Weld-On-Hub uses the typical TL bushings as perform many of the other standard drive parts. TL Bushings are stocked in both metric and inch 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 perfect for replacements and a contemporary remedy for upgrading clearance suit and press match sprockets. TL Bushings are found in a wide variety of various other European and American standard drive products. Stainless Steel Metric Sprockets Stainless Steel (AISI 304L) Metric Sprockets provide corrosion resistance and allow wash-down ability. These hub type sprockets can be provided with 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 available on ask for. TL Bushed edition also on request. Metric Idler and Double-One Sprockets Metric Idler Sprockets are plate sprockets with a ball bearing for installation. These sprockets generally offer tension for the chain drive and can be used within a pressure arm assembly or separately mounted to put the drive. Stock 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 control pairs of rolls or drive systems that must index. Custom Metric or ANSI Sprockets Custom sprockets including large diameter steel or cast iron systems for single, duplex or triple strand chain can be made to order. PTI typically keeps some stock in our European warehouse, so delivery could possibly be rather quick. Additional custom sprockets sizes for Metric conveyor chain or ANSI chain are also possible. Drawings are preferred to insure requirements are clear. All are possible with custom finished bore.