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ETW Retaining Rings

(E-Type Ring｜JIS B 2805)

The ETW Retaining Ring, also known as an E-Type ring, is manufactured according to JIS B 2805 standards. It is designed to be installed on shaft grooves to prevent axial movement of components such as bearings, washers, and springs. Featuring a three-prong open-end design, the ring allows for fast installation and removal using simple tools, making it highly efficient and space-saving.

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E型扣環／C型扣環｜JIS B 2805 軸用彈性卡環，碳鋼材質、染黑處理，適用溝槽定位固定結構
E型扣環／C型扣環｜JIS B 2805 軸用卡簧，不銹鋼／白鐵材質，耐腐蝕性高，適用精密傳動設備
E型扣環／C型扣環｜JIS B 2805 軸用彈性扣環，碳鋼鍍鎳表面，兼具導電性與外觀防鏽性能

Product Features

  • Standard: JIS B 2805 (DIN 6799 equivalent available)

  • Installation: Mounted on external shaft grooves to prevent axial displacement

  • Design Advantage: Open three-lug profile ensures compact structure and quick assembly

  • Material Options:
    ・S50C (Carbon Steel): Black oxide finish; cost-effective and suitable for general environments       
    ・SUS304 (Stainless Steel): Excellent corrosion resistance for humid or outdoor conditions

        ・SUS420 (Stainless Steel): Heat-treatable, ideal for high-load and

        corrosive environments

  • Size Range: Shaft diameters from ø0.6mm to ø30mm (custom sizes available upon request)

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Applications

  • Axial retention in precision motor shafts

  • Retaining springs and washers in compact assemblies

  • Miniature mechanisms and sliding components

  • Internal fastenings in bicycles and power tools

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Customization & Notes

  • Small-batch supply available

  • Code verification support provided

  • Custom tooling for non-standard dimensions upon request

  • JIS B 2805 and DIN 6799 have slight dimensional differences. Please confirm compatibility before ordering.

Reference Standards

  • JIS B 2805

  • (DIN 6799 available upon request)​​​

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