Rotor Clip SH-225ST Pa External Snap Retaining Ring

Product Description

The ROTOR CLIP SH-225ST PA is an external snap retaining ring designed to seat in a machined groove on a 2.25-inch diameter shaft, securing components axially without threading or welding. Manufactured from SAE 1060-1090 spring steel (UNS G10600-G10900) and finished with a phosphate coating for corrosion resistance, it delivers a hardness rating of 47-52 HRC for reliable load retention under dynamic conditions. The ring measures 0.078 inches thick with a groove diameter of 2.12 inches and a free outside diameter of 2.88 inches. Machinists, maintenance technicians, and industrial assemblers install this ring type across rotating shaft assemblies in HVAC blower shafts, pump impellers, and drive assemblies.

This external retaining ring is suited for residential and commercial applications wherever a 2.25-inch shaft groove is present. Typical use cases include blower wheel retention on HVAC equipment, pump and motor shaft assemblies, and general industrial machinery where a positive axial stop is required without permanent fastening. The phosphate finish provides a base for oil retention, making it well suited for applications with moderate moisture or lubrication exposure.

Key Features

• External ring design seats in a 2.12-inch groove diameter on a 2.25-inch shaft
• SAE 1060-1090 spring steel construction with 47-52 HRC hardness for high fatigue resistance
• Phosphate finish improves corrosion resistance and aids lubrication retention
• Free outside diameter of 2.88 inches allows controlled installation over shaft
• Ring thickness of 0.078 inches with tight tolerance of plus or minus 0.003 inches
• Meets SAE 1060-1090, UNS G10600-G10900, and ISO 13485:2015 standards

Compatibility

Designed for use on shafts with a 2.25-inch nominal diameter and a machined external groove conforming to the dimensional specifications of this ring series. Verify groove diameter, groove width, and groove depth against shaft drawings before installation.

Installation Notes

External snap retaining rings of this type require snap ring pliers sized for external rings; using incorrect tooling risks distorting the ring and reducing its load capacity. Shut down and de-energize all equipment before servicing any rotating shaft assembly. Confirm groove dimensions match ring tolerances prior to installation, as an undersized or oversized groove can cause the ring to unseat under load. Follow applicable machinery safety standards and equipment manufacturer service documentation during assembly.