Gibraltar C7-40B-G Revolving Crank Handle 0.5 in Square Bore

Product Description

The GIBRALTAR C7-40B-G is a revolving crank handle designed for manual operation of valves, actuators, equipment panels, and similar mechanical assemblies requiring hand-powered rotational input. Built with a plastic grip body and aluminum construction, it accepts a 0.5-inch square bore drive and features a 1.1-inch stem length. The revolving action allows continuous rotation without repositioning the hand, improving operator control in tight or repetitive-use service environments. This type of handle is commonly installed by maintenance technicians, HVAC service personnel, and industrial equipment specialists working on gear-driven or shaft-mounted control applications.

This crank handle is suited for light commercial and industrial applications where a square-bore manual actuator is required. Typical install scenarios include valve operators, machine control panels, and equipment requiring periodic manual adjustment. The 0.5-inch square bore fits standard square-drive shafts found across a wide range of mechanical and process control equipment. The plastic and aluminum combination keeps the handle lightweight while maintaining adequate durability for regular service use.

Key Features

• 0.5-inch square bore for direct engagement with standard square-drive shafts
• 1.1-inch stem length provides clearance for shaft engagement
• Revolving grip design enables continuous rotation without hand repositioning
• Plastic grip with aluminum body construction for lightweight, durable performance
• Compact form factor suited for panel-mount and valve-operator installations

Compatibility

Designed as a replacement or service crank handle for equipment using a 0.5-inch square bore shaft drive in light commercial and industrial mechanical applications.

Installation Notes

Installation is typically performed by a maintenance technician or mechanical service professional. Before installing or replacing a crank handle, de-energize or shut down any associated equipment and relieve any system pressure where applicable. Ensure the shaft is clean and free of burrs before seating the square bore to prevent damage to the bore interface. Verify that the shaft length is compatible with the 1.1-inch stem depth prior to final installation.