China Half Round Key Manufacturer, Supplier, Factory

Half Round Keys are essential components in mechanical assemblies, designed to prevent relative rotation between shafts and mounted parts. They are particularly valuable in applications where a full keyway might compromise the strength of the shaft. This type of key is often compared to other fastening solutions like Woodruff Keys, which are semicircular and fit into a matching keyseat. For applications requiring a simple, removable securement, a Cotter Pin is a common choice, though it serves a different primary function of securing pins or bolts. When a straight, cylindrical pin is needed for alignment or light-duty retention, a Round Pin is frequently used. In contrast, for creating a tight, taper-locked fit, a Taper Pin provides superior holding power in precision machinery. The Half Round Key offers a unique balance of ease of installation and reliable torque transmission.

The Half Round Key is manufactured to exacting standards to ensure a perfect fit and optimal performance. Its semi-cylindrical shape allows it to sit securely in a milled keyway on the shaft, while the flat surface mates with the hub. This design minimizes stress concentrations and distributes torsional loads effectively. We offer a comprehensive range of sizes and materials to suit various industrial requirements. Below are the detailed specifications for our standard Half Round Key product line.

Key Features of the Half Round Key

• Precision ground for a snug fit and reduced backlash.
• Available in various materials including carbon steel, stainless steel, and alloy steel.
• Surface treatments such as zinc plating or black oxide for enhanced corrosion resistance.
• Designed for easy installation and removal, simplifying maintenance procedures.
• Ideal for high-torque applications in automotive, aerospace, and heavy machinery.

Standard Half Round Key Dimensions (in inches)

Material Properties