Rotor Clip HO-125ST Zd Internal Snap Retaining Ring

Product Description

The ROTOR CLIP HO-125ST ZD is a heavy-duty internal snap retaining ring designed to seat in a machined groove inside a bore and axially retain components such as bearings, shafts, and bushings. Built from 1060/1090 spring steel with a zinc finish, it is engineered for applications demanding reliable thrust load resistance. The ring fits a 1.25-inch bore diameter and carries a groove safety factor thrust load capacity of 4,250 pounds and a ring safety factor of 8,932 pounds. Ring thickness is 0.05 inches and groove width is 0.056 inches. Machinists, maintenance technicians, and mechanical assemblers install this ring as a positive stop or retainer in precision assemblies.

The HO-125ST ZD is suited for residential and commercial mechanical assemblies where an internal retaining ring is required at a 1.25-inch bore diameter. Typical installations include gearboxes, pumps, motors, cylinders, and general industrial equipment where a compact, reliable axial retention solution is needed. The zinc finish provides basic corrosion resistance for light-duty environmental exposure. The ring is sold individually but must be ordered in a minimum quantity of 10 units per order.

Key Features

• 1.25-inch bore diameter with a free outer diameter of 1.388 inches for precise groove seating
• Spring steel construction graded 1060/1090 for consistent hardness of Rockwell C 47-52
• Zinc finish for basic corrosion resistance in general-use environments
• Groove safety factor thrust load capacity of 4,250 pounds; ring safety factor of 8,932 pounds
• Groove width tolerance of 0.000 to 0.004 inches and groove diameter tolerance of -0.004 to 0.004 inches for tight-tolerance assemblies
• Meets ISO 13485:2016 and SAE 1060-1090 standards; UNSPSC Code 31163202

Compatibility

Designed as a standard internal snap retaining ring for any bore machined to accept a 1.25-inch internal retaining ring groove with the specified groove width and depth dimensions.

Installation Notes

Installation requires internal snap ring pliers sized for the bore diameter. Power down and de-energize all equipment before disassembly or ring installation. Verify that the groove dimensions match the ring specifications before seating to avoid ring ejection under load. Follow applicable ANSI and ASME machinery safety standards for retaining ring installation and inspection.