Knipex 4811J1 Internal Retaining Ring Pliers

Product Description

The KNIPEX 4811J1 is a straight-head internal retaining ring pliers designed for installing and removing internal snap rings in bores and housings. Built on a steel body with non-slip plastic-coated handles, this tool is rated for heavy-duty use and features a bolted joint with zero backlash operation, which means the tips stay precisely positioned under load. Inserted tips measuring 1.30 mm in diameter are replaceable, extending the tool's service life. Overall length is 140.00 mm. The 4811J1 meets DIN 5256 C standards for retaining ring pliers.

This pliers is suited for applications requiring internal ring installation or removal in smaller bores, covering a ring diameter range of 15/32 to 1 inch. It is commonly used by machinists, HVAC technicians, plumbers, and mechanical service professionals working on pumps, motors, gearboxes, and valve assemblies where internal circlips must be compressed and seated into grooves precisely. The straight-head configuration provides direct access in open or moderately obstructed bore locations.

Key Features

• Bolted joint with zero backlash operation for accurate tip positioning under load
• Inserted, replaceable tips at 1.30 mm diameter for extended tool life
• Straight-head design for direct access to internal ring grooves
• Heavy-duty steel body construction meeting DIN 5256 C standard
• Non-slip plastic-coated handles for secure grip during compression
• Covers internal ring diameter range of 15/32 to 1 inch

Compatibility

Designed for internal retaining rings with a diameter range of 15/32 to 1 inch. Verify ring diameter and groove clearance before use to confirm fitment.

Installation Notes

This tool is used by mechanical trades and service technicians working on rotating equipment and assemblies. Before servicing any equipment, ensure the unit is de-energized, depressurized, and secured against accidental movement. Compress the retaining ring only enough to clear the groove walls — overstressing the ring can cause deformation or failure. Follow applicable manufacturer torque and assembly specifications for the surrounding assembly, not just the ring itself.