Rotor Clip KG-425SJ Internal Spiral Retaining Ring

Product Description

The ROTOR CLIP KG-425SJ is a stainless steel internal spiral retaining ring designed to seat in a machined groove inside a bored housing or bore assembly. It provides axial retention of shafts, pins, and other components without requiring a slot or hole in the retained part. The ring is manufactured from AISI 302 stainless steel, giving it strong corrosion resistance for wet, chemical, or washdown environments. It fits a 4.25-inch bore diameter with a free outside diameter of 4.52 inches, a groove width of 0.12 inches, a groove depth of 0.12 inches, and a ring thickness of 0.111 inches. Mechanical assemblers and maintenance technicians install this ring in industrial, hydraulic, and precision-machined assemblies.

This retaining ring is used in applications where a standard stamped ring cannot be installed from the end of a shaft or where continuous 360-degree contact with the groove is required. Spiral retaining rings are common in gearboxes, pumps, hydraulic cylinders, motors, and precision housings in industrial and commercial settings. The internal configuration means the ring seats into the bore groove to retain a component inside the housing. The 302 stainless steel construction makes it suitable for food-processing equipment, marine environments, and other corrosive-duty applications.

Key Features

• Internal spiral design provides full 360-degree groove contact for uniform axial load distribution
• AISI 302 stainless steel construction meets AMS-5866 material specification for corrosion resistance
• Thrust load capacity rated at 36,050 pounds at groove safety factor and 59,280 pounds at ring safety factor
• Groove width tolerance of 0.000 to 0.005 inches and groove diameter tolerance of -0.0060 to 0.0060 inches for precise fitment
• No slot or hole required in the retained component, preserving component strength
• Compliant with ISO 13485:2016 and AISI 302 standards

Compatibility

Designed for use in machined housings with a 4.25-inch bore diameter groove, an inside diameter of 3.896 inches, a groove width of 0.12 inches, and a groove depth of 0.12 inches. Verify groove dimensions against ROTOR CLIP engineering specifications before installation.

Installation Notes

Installation is performed by mechanical assemblers or maintenance technicians using spiral ring pliers or a ring applicator tool sized for the bore diameter. De-energize and lock out all power to the equipment before servicing any assembly containing retaining rings. Inspect the groove for burrs, corrosion, or out-of-tolerance dimensions before seating the ring. Do not over-compress or twist the ring during installation, as distortion will reduce load capacity.