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Tech Specifications

SKU: WH-551

Series: WH

Ring Type: Internal

Units: Imperial

Ring Style: Spirolox (Spiral)

Housing Diameter: 5.511 in

Groove Yield: 28,830 lb

Ring Shear: 52,360 lb

Groove Diameter: 5.658 in

Groove Width: 0.079 in

Material: Carbon Steel

Rating: Medium Duty

Number of Turns: 2

Ring Radial Wall: 0.250 in

Ring Thickness: 0.072 in

Free Outside Ring Diameter: 5.703 in


The WH Series Spirolox Retaining Ring is Smalley's most popular retaining ring series. Smalley engineers have developed the greatest number of standard retaining ring sizes in this series, allowing customers to easily select and order parts for their applications. WH & WS spiral rings easily handle thrust loads imposed by light or medium series bearings.