Martin Roller Chain Sprocket, Hardened Teeth, QD Bushed, Type B Hub, Double Strand, 60 Chain Size, For Sh Bushing, 0.75' Pitch, 14 Teeth, 1.6875' Max Bore Dia., 3.736' OD, 2.6875' Hub Dia., 1.341' Width: Industrial & Scientific. Martin Roller Chain Sprocket, Hardened Teeth, QD Bushed, Type B Hub, Double Strand, 60 Chain Size, For Sh Bushing, 0.75" Pitch, 14 Teeth, 1.6875" Max Bore Dia., 3.736" OD, 2.6875" Hub Dia., 1.341" Width: Industrial & Scientific. Double strand sprocket with two sets of teeth side by side around the circumference for use with double strand chains, which have a higher tensile strength and can support greater loads than single strand chains 。 Pitch of 3/4 inch for size 60 chains 。 Sprocket bore and hub with QD fittings for inserting and locking bushings into place 。 Type B sprocket with a hub projection on one side to accommodate various types of bushings to help prevent sprocket from slipping on the shaft 。 Sprocket teeth hardened by electrical induction or flame to increase teeth durability against wear, lengthening the service life of the sprocket 。 This Martin roller chain sprocket has a 3/4-inch pitch, fits size 60 chains, and is double strand with two sets of teeth side by side around the circumference for use with double strand chains, which have a higher tensile strength and can support greater loads than single strand chains. It is a Type B sprocket with a hub projection encircling the bore on one side, and both the hub and bore have Quick-Disconnect (QD) fittings for inserting and locking into place different QD bushings depending on the diameter of the shaft. The teeth of the sprocket have been hardened by electrical induction or flame, further increasing their durability against wear. It meets International Organization for Standardization (ISO) 9001 for quality assurance. This double strand roller chain sprocket is suitable for use in a broad range of applications involving moderate to heavy loads and ongoing, high-cycle operations, including heavy and commercial vehicle transmission systems, construction and agricultural equipment, conveyors, and factory manufacturing and assembly lines, among others.。A roller chain sprocket is a thin wheel with deep, uniformly spaced teeth ringing its circumference. The distance from the peak of one tooth to the next is called the pitch, and is commonly measured in 1/8-inch increments. The sprocket transfers power and motion by a roller chain that is threaded over the teeth of the sprocket. The alignment of the chain with the sprocket's pitch prevents the chain from slipping so that no power is lost. In the center of the sprocket is the bore (hole) for sliding the sprocket onto a shaft, and a bushing or bearing is often fitted to the sprocket’s hub to custom-fit the sprocket onto a shaft to hold it firmly in place. A hub is a protruding, raised lip encircling the bore of the sprocket. Sprockets with hubs on both sides are Type C, sprockets with hubs on one side are Type B, and sprockets with no hubs are Type A sprockets. For applications requiring sprockets to be swapped onto shafts of different diameters, a sprocket with a bore large enough to fit all shafts can be used, with the gap between the bore and shaft closed with a bushing or bearing. Roller chain sprockets are used in a broad range of applications where the drive power of an engine needs to be transferred into motion, such as in motor vehicles, conveyors, escalators, agricultural, forestry and mining equipment, aeronautics, robotics and space exploration, among others.。Martin Sprocket and Gear manufactures a variety of mechanical power transmission products such as sprockets, gears, bearings, and pulleys that meet International Organization for Standardization (ISO) standards for design and production. The company, founded in 1951, is headquartered in Arlington, TX. 。 。 。 。
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