Retaining Rings - Introduction

UR-US Series Light Duty

For economy in light duty applications. Rings are single turn for shaft or bore diameters from 1/2 “ thru 10”. A radius removal notch is on one end. The other end is square cut. UR (internal)-US (external Rings are axially assembled.

RR-RS Series Medium Duty

RR (internal) and RS (external) rings offer economy in price, space requirement and weight in medium thrust applications. These rings are rated to handle approximately twice the thrust capacity of the light duty series and two thirds the amount of thrust load heavy duty SPIROLOX and basic internal/external die-formed rings will take.

RRT-RST Series Medium Heavy Duty

For maximum ease of assembly with maximum thrust capacity. This series was originally designed to fit NAS 50-51 grooves RRT (internal), RST (external) thrust capacity is just below that of RRN-RSN Rings. Sizes range to fit 1/2 “ to 10” shaft and bore diameters. (sizes above 6” are 3-turn to facilitate assembly and removal).

RRN-RSN Series Heavy Duty

Sizes range to fit ½” thru 15” shaft and bore diameters and fit NAS 669-670 deep groves with minimum deflection and greatest thrust capacity. RRN (internal) and RSN (external) rings require no special tools for removal.

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