2 holes set screw shaft collar Material: Carbon Steel, Stainless Steel, Aluminum Finish: Black oxide, self colour, oiled, zinc plated Size: Standard, Customization, Metric/Inch, made to order Bore size: 5mm to 100 mm, 1/8 inch to 4 inch Feature:A shaft collar is a component in power transmissions that is used as a mechanical stop, locating component, and/or bearing face. The two most common types are the set screw style, which utilizes a solid ring and screws that protrude toward the center and dig into the shaft, and clamping style, which is compressed by screws and locked into place around the shaft. Shaft collars are usually made from aluminum, steel, stainless steel, or alloyed steel, and coated with zinc, chromium, or black oxide. They are generally used in washdown applications such as food processing, as well as in agricultural implements, office machines, exercise equipment, mixers, and printing presses. shaft collar, set screw shaft collars, metric set screw shaft collar, inch set screw shaft collar, metric 1 piece split shaft collar, inch 2 piece split shaft collar, metric 1 piece clamp shaft collar, single split shaft collar, double split shaft collar, inch threaded shaft collars, aluminum shaft collars, stainless steel shaft collars. couplings, set screw type jaw coupling, clamp type jaw coupling, double split coupling, single split coupling