3 inch Sheave Pulley - Cast Iron

The 3SHC 3" Cast Iron Sheave is a heavy-duty pulley designed to guide lift cables smoothly in garage door and cable-driven mechanical systems. Built from durable gray cast iron and equipped with a precision ball bearing assembly, this sheave pulley supports consistent operation in both residential and commercial door applications.

A machined cable groove and sealed bearing system help reduce friction while maintaining proper cable alignment during door movement. With a rated working load of up to 200 lb. and durable internal components, this 3-inch sheave is designed to handle repeated operational cycles while maintaining smooth rotation and dependable performance.

Product Highlights

• 3" Nominal Sheave Diameter: Standard pulley size designed for common garage door lift cable systems
• Maximum Cable Sizes: Groove options support lift cables up to 3/16" diameter, including 1/8", 5/32", and 3/16" cable sizes
• 200 lb. Load Capacity: Engineered to support heavy-duty cable loads in garage door lifting applications
• Ball Bearing Assembly: Precision bearing with hardened steel races and 8 steel balls for smooth, low-friction rotation
• Machined Cable Groove: Designed to guide lift cables securely while minimizing cable wear
• Durable Cast Iron Construction: Gray cast iron body provides strength and long-term wear resistance
• Protective Black Finish: Painted surface helps protect the sheave from corrosion in demanding environments
• Cycle Tested Performance: Rated for approximately 10,000 cycles on an 8 ft garage door system
• Approximate Weight: 1.5 lb. for a strong, stable pulley component