Rings / Axially Assembled Tapered Section Retaining Rings / HO

HO-315 (80mm Bore)


Product Image


Part Data

  • Housing or Shaft Housing
  • Axial or Radial Axial
  • Housing Dia. Dh 3.149 inches
  • Dh mm 80.00 mm
  • Groove Diameter Dg 3.3350 - 3.3470 inches
  • Groove Width W 0.120 - 0.125 inches
  • Groove Depth D 0.0960 inches
  • Free Diameter Df 3.468 - 3.578 inches
  • Thickness T *** 0.106 - 0.112 inches
  • Lug Height H 0.302 - 0.318 inches
  • Maximum Section S Max 0.2540 - 0.2700 inches
  • Minimum Section S Min 0.1210 - 0.1370 inches
  • Hole Diameter R 0.123 - 0.140 inches
  • Weight Per 1000 Pcs. 57.000 lbs.
  • Edge Margin Y Min. inches
  • Clearance Dia. Compressed In Housing L1 2.49 inches
  • Clearance Dia. Released In Groove L2 2.680 inches
  • Gap Width Ring In Groove G 0.650 inches

Performance Data

  • Thrust Ld. (lbs.) Ring Safety Factor Of 4 Pr 49329 lbs.
  • Thrust Ld. (lbs.) Groove Safety Factor Of 2 Pg 25700 lbs.

Tool Data

  • Ratchet Pliers (w/o Tips) RP-27R
  • Straight Ratchet Pliers Tips RP-5009R
  • 45 Ratchet Pliers Tips RP-5012R
  • 90 Ratchet Pliers Tips RP-5013R
  • Alternative Ratchet Pliers (w/o Tips) RP-900
  • Tips For Alt. Ratchet Pliers (Strt/45/90) RP-7801R RP-7845R RP-7890R


  • Carbon Steel (SAE 1060-1090)
  • Stainless Steel (PH15-7 Mo, PH17-7)
  • Beryllium Copper
  • Special Material Grades


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


Axially Assembled, Internal. Once installed in the groove of a housing/bore, the portion of the ring protruding from the groove (also called a shoulder) 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?

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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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