Gibraltar G5155-57-G Gear Lever Arm Ball Knob 1/2-13

Product Description

The GIBRALTAR G5155-57-G is a gear lever arm with a ball knob, designed for use as a manual control handle in industrial and mechanical applications. The arm features a steel shaft measuring 0.55 inches in diameter and 5.7 inches in length, topped with a phenolic ball knob that measures 1.375 inches in diameter. The 1/2-13 threaded stem provides a secure, standardized connection to mating components. With a 7-inch overall handle length and a 5/8-inch thread length, this lever arm delivers solid ergonomic control for machine operators and maintenance technicians working on equipment requiring manual gear or valve actuation.

This gear lever arm is suited for industrial machinery, equipment panels, and mechanical assemblies where a durable manual control handle is required. The steel shaft provides structural rigidity under repeated use, while the phenolic knob resists heat and chemicals common in shop and production environments. Maintenance technicians and machine builders typically install this type of lever arm during equipment assembly or as a replacement on existing machinery. The 1/2-13 stem size is a common thread standard found across a wide range of industrial equipment platforms.

Key Features

• 1/2-13 threaded stem for standardized mechanical connection
• Steel shaft at 0.55 inches diameter and 5.7 inches length for structural durability
• Phenolic ball knob resists heat and chemical exposure in shop environments
• 7-inch handle length provides ergonomic leverage for manual actuation
• 5/8-inch thread length for secure engagement with mating hardware
• 1.375-inch knob diameter for comfortable hand grip

Compatibility

Designed as an OEM-style replacement or new-installation gear lever arm for industrial machinery and mechanical assemblies using a standard 1/2-13 threaded stem interface.

Installation Notes

Installation is typically performed by maintenance technicians or machine builders during equipment assembly or repair. Ensure the mating threaded bore is clean and free of debris before threading in the 1/2-13 stem. Power down and de-energize all associated equipment before replacing or installing lever arm components. Verify thread engagement depth meets the equipment manufacturer's specifications before returning the machine to service.