Material: T8 A GB 1298-77
Heat treatment: HRC 50~55
A semi-circular key is a kind of key, its upper surface is a plane, the lower surface is a semi-circular arc surface, and the two sides are parallel, commonly known as a crescent key. Semi-circular key working surface for the two sides, relying on the side to transfer torque. The same flat key has good neutralization. Adapting to the tilt key in the shaft groove can swing around the center of curvature of the arc of the groove's bottom surface, so it can automatically adapt to the tilt of the bottom surface of the hub keyway. Easy to machine and install. The keyway on the shaft is deeper, weakening the strength of the shaft, and is generally used only in parts subject to less force. In the field of mechanical design, the key connection is a very common coupling method. According to the shape of the key, commonly used rectangular keys, half-round keys, wedge-shaped keys, and so on. Today, we focus on the semicircular key as a connection. Semicircular keys are said to be able to oscillate in the keyway of the shaft to accommodate the slope of the bottom of the wheel keyway groove, making them suitable for light-duty connections.
Size Can also be According to the Customer's requirement for manufacturing， please check the detailed specification sheet details PDF, CAD, 11-12Page See more product details.
