Hoopster® Retaining Rings NEW SUPPLEMENT TO SMALLEY’S CATALOG METRIC IDEAL FOR THIN WALL CYLINDERS ENDS FLEX FOR REMOVAL AND INSTALLATION WITH NO SPECIAL TOOLS Standard In Carbon And 302 Stainless Steel Coiled From Flat Wire, Not Stamped No-Tooling-Charges™ For Specials LOW PROFILE Suitable For Medium Or Light Loads RADIAL PROJECTION MINIMAL SHALLOW GROOVE DEPTH PATENT PENDING www.smalley.com [email protected] t +1.847.719.5900 f +1.847.719.5999

HHM/HHMU Series Hoopster® Rings nternal Hoopster Retaining Rings are difficult to remove from the groove without a removal provision. We offer either a bent end for removal or no removal provision as shown to the left. Stock Items available in carbon steel Product Dimensions unless otherwise specified. 1 Use"HHM" prefix for removal provision end. Use"HHMU" prefix for no removal provision. 2 Add suffix "-S02"for 302 stainless steel. 3 Based on a groove material yield strength of 310 N/mm2 and a safety factor of 2.

Steel Ring Company / Stock Items available in carbon steel 2 Based on a groove material yield strength of 310 N/mm2 and a safety factor of 2. Product Dimensions unless otherwise specified.

RING ABUTMENT Unlike a conventional Spiral Retaining Ring or Snap Ring, the retained component in a Hoopster® Retaining Ring assembly may have a corner break. Thrust load is not sacrificed when the retained component has a broken corner because the moment arm is negligible in a Hoopster design. The 3 sketches above illustrate acceptable abutment practice. GROOVE DESIGN AND GEOMETRY Groove deformation is by far the most common design limitation of most retaining rings. Unlike a conventional retaining ring or snap ring that fails by deforming and twisting, the Hoopster retaining ring shows superior...