Rotor Clip SH131ST Pa B100 External Retaining Ring

Product Description

The ROTOR CLIP SH131ST PA B100 is an external retaining ring designed to secure components on a shaft by seating in a precision-machined groove. It fits a 1-5/16 inch (1.3125 inches) shaft diameter with a groove diameter of 1.232 inches. Made from SAE 1060-1090 carbon steel with a phosphate finish, the ring delivers hardness in the 47-52 HRC range for reliable retention under load. This type of fastener is widely used in mechanical assemblies across HVAC equipment, pumps, motors, and general industrial machinery. Installation is performed by mechanical assemblers or maintenance technicians using standard retaining ring pliers.

This external retaining ring is suited for shaft-mounted assemblies requiring a compact, low-profile axial retention solution. The phosphate finish provides a baseline level of corrosion resistance and improves lubricant adhesion in service environments. The ring seats into a groove 0.056 inches wide and 0.040 inches deep, with a free diameter of 1.214 inches and a free outside diameter of 1.750 inches. It is sold in a minimum order quantity of 100 pieces per package, making it appropriate for production or maintenance stocking applications.

Key Features

• External style ring for shaft-groove retention on 1-5/16 inch shafts
• SAE 1060-1090 carbon steel construction with 47-52 HRC hardness
• Phosphate finish for corrosion resistance and lubrication retention
• Groove diameter of 1.232 inches with tolerance of -0.0040 to 0.0040 inches
• Ring thickness of 0.050 inches for a low-profile axial footprint
• Meets SAE 1060-1090, UNS G10600-G10900, and ISO 13485:2015 standards

Compatibility

Designed as an OEM-style external retaining ring for shafts with a 1-5/16 inch diameter and a matching groove profile per SAE 1060-1090 and UNS G10600-G10900 specifications.

Installation Notes

Installation and removal require retaining ring pliers sized for external rings of this diameter — do not use substitute tools that may deform the ring or damage the groove. Depressurize and de-energize any associated assembly before servicing components secured by this ring. Verify that the shaft groove dimensions match the specified groove width of 0.056 inches and groove depth of 0.040 inches before installation. Reuse of removed retaining rings is generally not recommended in safety-critical or high-cycle applications.