Rings / Constant Section Retaining Rings / Snap Rings / CBS



Product Image


Part Data

  • Housing or Shaft Shaft
  • Axial or Radial Axial
  • Shaft Diameter Ds 12.205 inches
  • Ds mm 310.00 mm
  • Groove Diameter Dg 299.500 - 300.000 mm
  • Groove Width W 5.50 - 6.00 mm
  • Free Diameter Df 294.000 - 297.000 mm
  • Section S 11.70 - 12.00 mm
  • Thickness T 4.30 - 4.50 mm
  • Free Gap G 10 mm
  • Radius r 1.5 mm
  • L2 324.0 mm
  • Weight Per 1000 Pcs. 412.000 kg
  • Allowable Radius / Chamfer R/Ch Max, 7.00 mm
  • Hardness ST 450.0 - 520.0 HV
  • Interchange Din DIN 5417 310x4.50

Performance Data

  • Thrust Load Ring Pr 218.00 kN
  • Thrust Load Groove Pg 800.00 kN
  • R.P.M. Limits Standard Material RPM 500
  • Max. Load W/ R Max Or Ch Max PR 28.40 kN


  • Carbon Steel (SAE 1060-1090)


For plated rings, add .002" (.05 mm) to the listed maximum thickness.

  • PA - Phosphate, Carbon Steel
  • PD - Phosphate and Oil, Carbon Steel
  • PAL - Phosphate with Sealer, Carbon Steel
  • HPD - Heavy Phosphate and Oil, Carbon Steel
  • ZD - Zinc Plating, Carbon Steel
  • ZF - Zinc Bright, Carbon Steel
  • ZDL - Zinc Dichromate with Sealer, Carbon Steel
  • HZDL - Heavy Zinc Dichromate with Sealer, Carbon Steel
  • Z3X - Trivalent Chromate over Zinc, Carbon Steel
  • ZFF - Zinc Flash, Carbon Steel
  • CF - Copper Flash, Carbon Steel
  • OIL - Oil over Steel, Carbon Steel



Snap Ring, External, Metric For Bearings. Once installed in the groove of a shaft, the portion of the ring protruding from the groove holds an assembly in place.

Custom solutions

Can’t find what you’re looking for in an existing product, need a modified version of one of our standard parts, or simply aren’t sure what part you need?

Submit your custom specifications

Need help? Contact our Engineering team


CAD Models are provided for informational purposes only and may not represent the final part you receive.  Manufacturer assumes no responsibility for any such inconsistencies , and disclaims any liability to any party for any loss, damage, or disruption which may arise therefrom. Always contact Manufacturer for final measurements when specified in your design.


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Our passion is creating the best rings, springs, and clamps. Our mission is to make your work a success. We are here for you.