Rotor Clip SE-21ST Zd E Style Retaining Ring 7/32 in

Product Description

The ROTOR CLIP SE-21ST ZD is an external E style retaining ring designed to secure components on shafts without the need for a groove machined entirely around the shaft. It fits a 7/32 inch (0.2188 inch decimal) shaft diameter and seats in a groove measuring 0.188 inches in diameter and 0.029 inches wide. Manufactured from SAE 1060-1090 steel and finished with a yellow zinc dichromate coating, this ring provides corrosion resistance in light-duty service environments. The three-prong E style design allows for quick installation and removal without special tooling in most applications. Mechanical assemblers and maintenance technicians working in industrial, HVAC, and general trade settings use this ring as a standard fastening component.

This retaining ring is suited for use on small-diameter shafts in light mechanical assemblies where space is limited and a full circumferential groove is not practical. Common applications include motor shafts, linkage pins, and small rotating assemblies found in HVAC equipment, plumbing valves, and electrical actuator mechanisms. The E style form factor is particularly useful in assemblies requiring frequent disassembly for maintenance. This ring is sold individually with a minimum order quantity of 100 units, making it appropriate for shop stock or service kit replenishment.

Key Features

• E style three-prong design allows tool-free or needle-nose plier installation on small shafts
• Fits 7/32 inch (0.2188 inch) shaft diameter with a 0.188 inch groove diameter
• SAE 1060-1090 steel construction meets UNS G10600-G10900 and ISO 13485:2015 standards
• Yellow zinc dichromate finish provides moderate corrosion protection
• Hardness rated at 66.5-71 HR30N for reliable retention under load
• Ring thickness of 0.025 inches with a free outside diameter of 0.437 inches

Compatibility

Designed as an OEM-style replacement or service stock retaining ring for external shaft retention applications requiring a 7/32 inch shaft diameter and a 0.188 inch groove diameter E style fit.

Installation Notes

Installation and removal of E style retaining rings is typically performed by mechanical assemblers or field technicians using needle-nose pliers or dedicated retaining ring pliers. Always de-energize and lock out equipment before servicing any assembly containing this ring. Do not reuse a ring that has been removed, as deformation during extraction compromises retention force. Verify groove dimensions against the ring specifications before installation to ensure proper seating and retention.