Rotor Clip E-18ST Zd External E Style Retaining Ring

Product Description

The ROTOR CLIP E-18ST ZD is an external E style retaining ring designed to secure components on shafts in a wide range of light-duty mechanical assemblies. It fits a 3/16 inch (0.1875 inch) shaft diameter with a groove diameter of 0.147 inches and is manufactured from SAE 1060-1090 carbon steel with a yellow zinc dichromate finish for corrosion resistance. The ring measures 0.025 inches thick and features three prongs for positive engagement in the groove. Licensed tradespeople and assembly technicians working on small-shaft applications in HVAC, plumbing, and industrial equipment commonly specify this part for reliable axial retention without requiring special tools beyond standard pliers.

This retaining ring is suited for residential and light commercial mechanical assemblies where a low-profile, external groove retention solution is needed on shafts near 3/16 inch in diameter. Typical applications include small motor shafts, pump components, fan assemblies, and instrumentation hardware. The E style design allows installation and removal with standard snap ring pliers, making it practical for field service and production-line assembly alike. The zinc dichromate finish provides a baseline level of corrosion protection appropriate for indoor or sheltered environments.

Key Features

• E style external retaining ring for 3/16 inch shaft diameter (0.1875 inches)
• Yellow zinc dichromate finish over SAE 1060-1090 carbon steel for corrosion resistance
• Groove diameter of 0.147 inches with a tolerance of 0.0000 to 0.0020 inches
• Ring thickness of 0.025 inches with tolerance of -0.002 to 0.002 inches
• Three-prong design provides positive axial load retention
• Meets SAE 1060-1090 and UNS G10600-G10900 fastener standards; manufactured under ISO 13485:2015

Compatibility

Designed as an OEM-style external E style retaining ring for 3/16 inch shafts conforming to SAE 1060-1090 groove specifications. Verify shaft diameter and groove dimensions against the values listed in the Technical Specifications before installation.

Installation Notes

Installation and removal should be performed by a qualified mechanic or assembly technician using snap ring pliers sized for E style rings. Relieve any axial load and de-energize or lock out the equipment before servicing. Inspect the groove for burrs or damage before seating the ring to ensure full prong engagement. Do not reuse a ring that has been overstressed, deformed, or shows visible cracking.