Gibraltar G20L Sliding Arm Bar Clamp 8 in 4 in Throat

Product Description

The GIBRALTAR G20L is a sliding arm bar clamp built for professional fabrication, welding, and machining applications. It delivers 770 pounds of clamping pressure through a lever-style handle, allowing fast one-handed adjustments along the rail without sacrificing holding force. The forged steel frame and forged steel pad material provide the structural rigidity needed for repeated heavy-use cycles. With an 8-inch maximum capacity and a 4-inch throat depth, this clamp handles a wide range of workpiece sizes in both shop and field settings. A nickel finish adds corrosion resistance to the forged body.

The G20L belongs to GIBRALTAR's Series G bar clamp line. It is suited for metalworking, millwright, and fabrication trades where repeatable, high-pressure workholding is required. The lever handle design speeds up setup time in production environments, making it a practical choice for welding fixturing, assembly jigs, and machining setups. The alloy steel spindle maintains thread integrity under sustained clamping loads.

Key Features

• 770-pound clamping pressure for secure workholding under heavy loads
• Lever-style handle allows fast single-hand sliding adjustment
• Forged steel frame and pad for maximum rigidity and durability
• Alloy steel spindle resists thread wear under repeated high-force use
• 4-inch throat depth accommodates thicker workpieces and flanged edges
• Nickel finish provides added corrosion resistance

Compatibility

Designed as an OEM-style replacement or direct-use clamp within the GIBRALTAR Series G sliding arm bar clamp family.

Installation Notes

This clamp is installed and operated by machinists, fabricators, welders, and millwrights. Before applying clamping pressure, confirm the workpiece is properly seated and the rail is fully engaged in the sliding arm. Inspect the spindle threads and pad surfaces before each use for wear or damage. Always release clamping pressure fully before repositioning the sliding arm along the rail.