External Retaining Rings for Shafts are safety elements for axially mounting universal use. Retaining Rings can transmit considerable axial loads between the element of the device which exerts the force and the groove in which the ring is assembled. Once the ring is assembled in the groove of a shaft, the portion of the ring extending beyond the groove surface holds an assembly in place, even under loaded conditions. The 2108-5108 family of External, Axial Mount Retaining Rings are available in shaft diameter sizes between 0.500 and 3.938 inches, and groove sizes between 0.468 and 3.734 inches. Ring thicknesses are between 0.035 and 0.109 inches. Lugs are "reversed" for use in applications where clearance is minimal; provides smaller radial width and uniform/concentric support towards axis of shaft.
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Beneri® Reverse Lug Axially Mounted External Retaining Rings for Shafts

Beneri® 0.468 Inch (in) Diameter D2 Reverse Lug Axially Mounted External Retaining Ring
Beneri® Reverse Lug Axially Mounted External Retaining Rings for Shafts

Beneri® 0.646 Inch (in) Diameter D2 Reverse Lug Axially Mounted External Retaining Ring
Beneri® Reverse Lug Axially Mounted External Retaining Rings for Shafts

Beneri® 0.926 Inch (in) Diameter D2 Reverse Lug Axially Mounted External Retaining Ring
Description N/A External Retaining Rings for Shafts are safety elements for axially mounting universal use. Retaining Rings can transmit considerable axial loads between the element of the device which exerts the force and the groove in which the ring is assembled. Once the ring is assembled in the groove of a shaft, the portion of the ring extending beyond the groove surface holds an assembly in place, even under loaded conditions. The 2108-5108 family of External, Axial Mount Retaining Rings are available in shaft diameter sizes between 0.500 and 3.938 inches, and groove sizes between 0.468 and 3.734 inches. Ring thicknesses are between 0.035 and 0.109 inches. Lugs are "reversed" for use in applications where clearance is minimal; provides smaller radial width and uniform/concentric support towards axis of shaft.
Brands N/A Beneri®
Material N/A Carbon Steel C60 (SAE 1060)
Finish1 N/A Oil Phosphate
Style N/A No Beam (Shoulder)
Diameter D2 N/A 0.468 in N/A 0.646 in N/A 0.926 in
Depth N/A 0.016 in N/A 0.021 in N/A 0.029 in
Free Diameter D3 N/A 0.461 in N/A 0.635 in N/A 0.925 in
Ring Number N/A 50 N/A 68 N/A 100
Shaft Diameter D1 N/A 0.500 in N/A 0.688 in N/A 0.984 in
Thickness (S) N/A 0.035 in N/A 0.042 in N/A 0.042 in
Width (M) N/A 0.039 in N/A 0.046 in N/A 0.046 in
Cross References N/A Do you have an existing retaining ring? EFC can provide cross references to most major manufactured brands.

Assembly tools and other information are available upon request. EFC offers a complete and comprehensive offering of retaining rings for shaft and bores, external and internal, in both Inch and Metric sizes. Hundreds of different sizes and styles are available by contacting EFC International.
Note N/A Additional Dimensions: Dimensioned print available upon request. Alternate groove variations available.
Packaging: Loose (bulk), small box, large box, roll-packed.
  • 1 Additional finishes available upon request.
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