Rotor Clip KG-250SJ Internal Spiral Retaining Ring

Product Description

The ROTOR CLIP KG-250SJ is a stainless steel internal spiral retaining ring engineered for a 2.5-inch bore diameter. It seats into a machined internal groove to retain shafts, pins, bearings, or other components within a housing or bore. The ring is manufactured from AISI 302 stainless steel, providing corrosion resistance in demanding industrial and mechanical environments. With a ring thickness of 0.078 inches and a groove width of 0.086 inches, the KG-250SJ is dimensionally precise and suited for applications requiring a secure, low-profile axial retention solution. Installation and removal require no special pliers beyond standard spiral ring tools.

This retaining ring is used in mechanical assemblies where an internal groove is machined into a bore to provide axial retention without threading or welding. Typical applications include pump housings, gearboxes, hydraulic cylinders, and industrial machinery where a 2.5-inch bore is present. The stainless steel construction makes it appropriate for wet, washdown, or mildly corrosive service environments. Machinists, maintenance technicians, and assembly professionals working in general industrial, fluid handling, or OEM equipment contexts regularly specify this ring type.

Key Features

• Internal spiral design seats in a machined groove inside a 2.5-inch bore
• AISI 302 stainless steel construction meets AMS-5866 material standard
• Groove width of 0.086 inches with a tolerance of 0.000 to 0.005 inches for precise fit
• Ring thickness of 0.078 inches with a tolerance of -0.003 to 0.003 inches
• Thrust load capacity of 13,080 lb (groove safety factor) and 25,730 lb (ring safety factor)
• Complies with ISO 13485:2016 and AISI 302 standards

Compatibility

Designed as an OEM-style internal spiral retaining ring for mechanical assemblies with a 2.5-inch bore diameter and a machined internal groove matching the specified groove width and depth dimensions.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician using spiral retaining ring installation tools appropriate for the bore diameter. Verify that the internal groove dimensions in the housing match the specified groove width of 0.086 inches and groove depth of 0.074 inches before installation. Ensure the bore and groove are clean and free of debris prior to seating the ring. Confirm full ring engagement in the groove before applying any axial load.