{"product_id":"rotor-clip-e-87st-pa-b100-external-e-retaining-ring-7-8-in","title":"Rotor Clip E-87ST Pa B100 External E Retaining Ring 7\/8 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ROTOR CLIP E-87ST PA B100 is an external E style retaining ring designed to seat in a machined groove on a 7\/8 inch (0.875 inch) shaft. It provides axial retention of components on a shaft without requiring threading, staking, or welding. Made from SAE 1060-1090 steel with a phosphate finish, the ring delivers hardness in the 37-43 HRC range for reliable holding force under load. The groove diameter is 0.675 inches and the ring thickness is 0.05 inches. This part is sold in a minimum order quantity of 100 units and is installed by machinists, maintenance technicians, and assembly professionals across industrial and mechanical service applications.\u003c\/p\u003e\u003cp\u003eE style external retaining rings are commonly used in light-duty shaft assemblies where a low-profile, three-pronged ring is preferred over a traditional circlip. This ring fits a 7\/8 inch shaft with a groove diameter of 0.675 inches and a groove width of 0.056 inches. Typical applications include electric motor shafts, gearboxes, pump assemblies, and HVAC blower motor shafts where axial component retention is required. The phosphate finish provides a baseline level of corrosion resistance suitable for indoor mechanical environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eExternal E style ring with three prongs for positive shaft engagement\u003c\/li\u003e\n\u003cli\u003eFits 7\/8 inch (0.875 inch) shaft diameter with 0.675 inch groove diameter\u003c\/li\u003e\n\u003cli\u003eSAE 1060-1090 steel construction, hardness 37-43 HRC\u003c\/li\u003e\n\u003cli\u003ePhosphate finish for corrosion resistance in standard indoor service conditions\u003c\/li\u003e\n\u003cli\u003eRing thickness of 0.05 inches with tight tolerance of plus or minus 0.002 inches\u003c\/li\u003e\n\u003cli\u003eMeets SAE 1060-1090 and UNS G10600-G10900 fastener standards; ISO 13485:2015 quality system\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard OEM-style external E retaining ring for 7\/8 inch shafts with a 0.675 inch groove diameter and 0.056 inch groove width. Verify groove dimensions against shaft specifications before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eE style retaining rings are installed and removed using retaining ring pliers appropriate for external E style rings — do not use standard snap ring pliers, as prong geometry differs. Confirm groove diameter, groove width, and groove depth match ring specifications before installation. Inspect the groove for burrs or damage that could affect ring seating. Always wear eye protection when installing or removing retaining rings, as the ring can release under spring tension.\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: 7\/8 inches (0.875 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGroove Diameter\u003c\/strong\u003e: 0.675 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGroove Diameter Tolerance\u003c\/strong\u003e: 0.000 to 0.003 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGroove Width\u003c\/strong\u003e: 0.056 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGroove Width Tolerance\u003c\/strong\u003e: 0.000 to 0.003 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGroove Depth\u003c\/strong\u003e: 0.100 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree Diameter\u003c\/strong\u003e: 0.668 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree Diameter Tolerance\u003c\/strong\u003e: -0.005 to 0.003 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree Outside Diameter\u003c\/strong\u003e: 1.300 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Thickness\u003c\/strong\u003e: 0.050 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Thickness Tolerance\u003c\/strong\u003e: -0.002 to 0.002 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 Steel (UNS G10600-G10900)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness\u003c\/strong\u003e: 37-43 HRC\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: 0.0077 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 100\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-87ST PA B100\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ROTOR CLIP","offers":[{"title":"Default Title","offer_id":51721648308530,"sku":"E-87ST PA B100","price":3121.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ce4642d7831c2d970186b020fb4cd529_262e1f3f-884a-4d48-a94c-293794aa98bf.jpg?v=1788579180","url":"https:\/\/voomisupply.com\/products\/rotor-clip-e-87st-pa-b100-external-e-retaining-ring-7-8-in","provider":"Voomi Supply","version":"1.0","type":"link"}