{"product_id":"rotor-clip-e-25st-pa-external-e-style-retaining-ring","title":"Rotor Clip E-25ST Pa External E Style Retaining Ring","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ROTOR CLIP E-25ST PA is an external E style retaining ring designed to secure components on a shaft without the need for grooves machined all the way around the shaft diameter. It seats in a shallow circumferential groove on the outside of a 1\/4 inch shaft and holds axial position under load. Made from SAE 1060-1090 carbon steel with a phosphate finish for corrosion resistance, this ring measures 0.025 inches thick and provides a reliable mechanical stop in compact assemblies. It is installed by trade professionals in mechanical, HVAC, and industrial applications wherever precise axial retention on small-diameter shafts is required.\u003c\/p\u003e\u003cp\u003eThis ring is suited for use on 1\/4 inch shafts (6.35 mm) with a groove diameter of 0.210 inches and a groove width of 0.029 inches. It is commonly found in small motors, pump assemblies, fan shaft assemblies, and precision mechanical components across residential and light commercial equipment. The three-prong E style design allows for quick installation and removal without special tooling, making it a practical choice in production and field-service environments. The phosphate finish provides a base layer of corrosion protection suitable for indoor and sheltered installations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eE style external design with three prongs for tool-free installation and removal on 1\/4 inch shafts\u003c\/li\u003e\n\u003cli\u003eSAE 1060-1090 carbon steel construction (UNS G10600-G10900) meets ISO 13485:2015 standards\u003c\/li\u003e\n\u003cli\u003ePhosphate finish provides baseline corrosion resistance and improves paint adhesion where applicable\u003c\/li\u003e\n\u003cli\u003eHardness rated at 66.5-71 HR30N for consistent retention force under dynamic load\u003c\/li\u003e\n\u003cli\u003eGroove diameter of 0.210 inches with a tight tolerance of 0.000 to 0.003 inches for precise fitment\u003c\/li\u003e\n\u003cli\u003eRing thickness of 0.025 inches with tolerance of -0.002 to 0.002 inches for dimensional consistency\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use on 1\/4 inch diameter shafts (0.250 inches decimal) with a groove width of 0.029 inches and groove depth of 0.020 inches. Verify shaft and groove dimensions against the specified tolerances before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is typically performed by mechanical technicians or field service professionals using needle-nose pliers or an E ring applicator tool to seat the prongs into the shaft groove. Always de-energize and lock out the equipment before servicing any rotating assembly. Do not reuse a ring that has been removed, as the prongs may be deformed and retention force will be reduced. Confirm groove dimensions match specifications before installation to avoid ring walk or ejection under load.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Type\u003c\/strong\u003e: External E Style\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Diameter\u003c\/strong\u003e: 1\/4 inch (0.2500 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Diameter (mm)\u003c\/strong\u003e: 6.35 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGroove Diameter\u003c\/strong\u003e: 0.2100 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGroove Diameter Tolerance\u003c\/strong\u003e: 0.0000 to 0.0030 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree Diameter\u003c\/strong\u003e: 0.2070 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree Diameter Tolerance\u003c\/strong\u003e: -0.0030 to 0.0010 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree Outside Diameter\u003c\/strong\u003e: 0.5270 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGroove Width\u003c\/strong\u003e: 0.0290 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGroove Width Tolerance\u003c\/strong\u003e: 0.0000 to 0.0030 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGroove Depth\u003c\/strong\u003e: 0.0200 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Thickness\u003c\/strong\u003e: 0.0250 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Thickness Tolerance\u003c\/strong\u003e: -0.0020 to 0.0020 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Prongs\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: SAE 1060-1090 Carbon Steel (UNS G10600-G10900)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness\u003c\/strong\u003e: 66.5-71 HR30N\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Phosphate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: SAE 1060-1090; UNS G10600-G10900; ISO 13485:2015\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.00076 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: ROTOR CLIP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: E-25ST PA\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ROTOR CLIP","offers":[{"title":"Default Title","offer_id":51716199481650,"sku":"E-25ST PA","price":1099.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a4553dd33a0c1b1f4117c387f32e799e.jpg?v=1788523065","url":"https:\/\/voomisupply.com\/products\/rotor-clip-e-25st-pa-external-e-style-retaining-ring","provider":"Voomi Supply","version":"1.0","type":"link"}