Gibraltar G12L Sliding Arm Bar Clamp 4 in Capacity

Product Description

The GIBRALTAR G12L is a sliding arm bar clamp designed for secure, repeatable workholding in fabrication, assembly, and maintenance applications. It delivers 350 pounds of clamping pressure through a lever-style handle, allowing fast one-handed adjustments along the rail. The frame and pad are constructed from forged steel, while the spindle uses alloy steel for durability under load. A nickel finish provides corrosion resistance in shop environments. This clamp is installed and used by machinists, fabricators, welders, and maintenance technicians who need reliable holding force without dedicated fixturing.

The G12L is suited for benchtop and fixture-based workholding tasks in light manufacturing, metalworking, and general trade shop settings. Its 4-inch maximum capacity and 2-23/64-inch throat depth accommodate a range of workpiece sizes. The lever handle allows quick repositioning without tools, making it practical for repetitive clamping operations. The 13.50 x 6.50 millimeter rail size is consistent with the Series G clamp family.

Key Features

• 350 pounds of clamping pressure for positive workholding
• Lever-style handle allows one-handed, tool-free adjustment
• Forged steel frame and pad for high-load durability
• Alloy steel spindle for thread strength and wear resistance
• Nickel finish for corrosion resistance in shop environments
• Compact rail profile at 13.50 x 6.50 millimeters for space-efficient clamping setups

Compatibility

Designed as a Series G sliding arm bar clamp for general workholding applications in metalworking and fabrication environments.

Installation Notes

This clamp is positioned by hand along the rail and locked at the desired capacity point using the lever handle. No special tools are required for setup. Ensure the workpiece is fully seated against both the fixed and sliding pads before applying full clamping pressure. Do not exceed the rated 350-pound clamping pressure to avoid deforming the workpiece or stressing the spindle threads.