Rotor Clip KG-112SJ Internal Spiral Retaining Ring

Product Description

The ROTOR CLIP KG-112SJ is a stainless steel internal spiral retaining ring designed to seat within a machined groove inside a bore and axially retain shafts, pins, or components without requiring holes or slots in the retained part. The ring is manufactured from AISI 302 stainless steel, providing corrosion resistance in wet, chemical, or food-adjacent environments. Key dimensions include a 1-1/8 inch bore diameter, a 1.205 inch free outside diameter, a 0.056 inch groove width, and a 0.036 inch groove depth. Ring thickness measures 0.05 inches. The spiral design allows the ring to be coiled into the groove using a flat-bladed tool rather than conventional snap-ring pliers.

This ring is suited for industrial, mechanical, and fluid-handling assemblies where a standard external snap ring is not practical or where bore access limits fastener options. Typical applications include pump housings, hydraulic cylinders, valve bodies, motor end bells, and precision instrument assemblies. The AISI 302 material grade and AMS-5866 compliance make it a common choice in environments where mild chemical exposure or moisture resistance is required. Machinists, millwrights, and MRO maintenance technicians are the primary installers.

Key Features

• Internal spiral design seats into bore groove without specialized pliers
• AISI 302 stainless steel construction for corrosion resistance
• Groove width tolerance of 0.000 to 0.004 inches for precise fitment
• Thrust load capacity rated at 2,860 pounds (groove safety factor) and 7,420 pounds (ring safety factor)
• Meets AMS-5866 and ISO 13485:2016 standards
• Minimum order quantity of 5 pieces per order

Compatibility

Designed as an OEM-style internal spiral retaining ring for bores with a nominal 1-1/8 inch diameter and a machined groove conforming to the specified groove width and depth dimensions.

Installation Notes

Installation requires a clean, burr-free groove machined to the specified groove width and depth tolerances. A flat-bladed or coiling-style insertion tool should be used to wind the ring into the groove without overstressing the material. Always verify the groove diameter tolerance of -0.004 to 0.004 inches is met before installation. Depressurize, de-energize, or drain any assembly before disassembling to replace or install retaining rings.