Answer from Ningbo Changshi: The minimum bending radius (MBR) is one of the most fundamental rules in cable installation. It specifies the smallest radius a cable can be bent without causing permanent damage to its internal structure. Sheaves must be large enough to accommodate this radius.

• Why it's important: Bending a cable too tightly, such as over a sheave that's too small, can stress and stretch the conductor strands, damage the insulation, or break the fiber strands in a fiber optic cable. This can compromise the cable's electrical or data transmission properties, leading to premature failure.

A common industry guideline is that the sheave diameter should be at least 20 times the diameter of the conductor. For example, a 1-inch diameter conductor requires a sheave with at least a 20-inch diameter. Always refer to the cable manufacturer's specifications for the precise MBR. Our extensive range of sheaves comes in various diameters, ensuring we have the perfect fit to protect your conductors and adhere to project standards.