Knipex 4411J4 Internal Retaining Ring Pliers 12.5 in

Product Description

The KNIPEX 4411J4 is a straight-tip internal retaining ring pliers designed for installing and removing internal snap rings in bores, housings, and machined cavities. Built with a steel body and plastic-grip handles, this tool delivers the control and tip-to-ring engagement that mechanics and maintenance technicians require on the bench or in the field. The straight head geometry and 0-degree tip angle provide direct axial access to retaining ring grooves. The tip diameter measures 3.20 millimeters, with a tip size of 0.1260 inches, suited for medium-range ring applications. Overall length is 12.5 inches, giving the technician adequate leverage without excess bulk in confined assemblies.

This pliers is used across HVAC, industrial maintenance, plumbing, and general mechanical service wherever internal retaining rings secure bearings, shafts, pins, or valve components inside a bore. It is well-suited for residential and light commercial equipment teardowns and reassembly, including pump housings, motor end bells, and gearboxes. The straight tip configuration works in open, accessible bores where angled tips are not required. Technicians working on production lines or equipment with standardized bore dimensions will find the fixed 0-degree tip angle efficient for repetitive ring removal and reinstallation.

Key Features

• Straight 0-degree tip angle for direct access to internal retaining ring grooves
• 3.20 mm tip diameter with 0.1260-inch decimal tip size for medium-range snap rings
• Steel body construction for durability under repeated shop use
• Plastic grip handles for hand comfort during extended service work
• Meets DIN 5256 C standard for retaining ring pliers
• 12.5-inch overall length provides controlled leverage in accessible bore applications

Compatibility

Designed for use with internal retaining rings in bores and housings across general mechanical, HVAC, and industrial maintenance applications where a straight-tip internal ring pliers conforming to DIN 5256 C is required.

Installation Notes

Installation and removal of internal retaining rings should be performed by a qualified technician familiar with snap ring tools and the assembly being serviced. Always de-energize, depressurize, and isolate the equipment before disassembling any component containing retaining rings. Wear eye protection, as retaining rings can release stored spring energy if tips slip during compression. Verify that the tip size matches the ring holes before applying force to avoid tip or ring damage.