Rotor Clip HO-56ST Zd Internal Snap Retaining Ring

Product Description

The ROTOR CLIP HO-56ST ZD is a heavy-duty internal snap retaining ring designed to secure components within a bored housing or bore. Machined from 1060/1090 spring steel with a zinc finish for corrosion resistance, this ring seats into an internal groove to provide positive axial retention. It fits a 9/16-inch bore diameter, features a free outer diameter of 0.62 inches, a ring thickness of 0.035 inches, and a groove width of 0.039 inches. Thrust load capacity reaches 2,253 pounds at the ring safety factor and 710 pounds at the groove safety factor. Installation is handled by mechanical assemblers, maintenance technicians, and precision equipment service professionals.

This internal retaining ring is suited for use in industrial machinery, motors, gearboxes, pumps, and precision assemblies where a bore-mounted snap ring is required to prevent axial movement of shafts, bearings, or other retained components. The zinc finish makes it appropriate for moderate-duty environments where light corrosion protection is a factor. The HO-56ST ZD is sold individually but requires a minimum order quantity of 100 units, making it a standard production and MRO stocking item.

Key Features

• Internal snap ring design for bore-mount retention in housing or bore applications
• Spring steel construction (SAE 1060-1090, UNS G10600-G10900) with Rockwell 30N hardness of 67.5-72
• Zinc finish provides light corrosion protection
• Thrust load capacity of 2,253 pounds (ring safety factor) and 710 pounds (groove safety factor)
• Meets ISO 13485:2016 standards; does not meet military specifications
• Groove width tolerance of 0.000 to 0.003 inches and groove diameter tolerance of -0.002 to 0.002 inches for precise fitment

Compatibility

Designed as an OEM-style replacement or new-installation internal snap retaining ring for bored housings with a 9/16-inch bore diameter requiring a 0.039-inch groove width and 0.017-inch groove depth.

Installation Notes

Install and remove internal snap rings using appropriately sized internal snap ring pliers to avoid ring distortion or eye hazard from uncontrolled release. De-energize and lock out all equipment before servicing any assembly containing retaining rings. Verify groove dimensions match the ring specifications before installation, as an undersized or oversized groove will reduce rated thrust load capacity. Follow applicable ANSI and OSHA machine guarding and lockout/tagout procedures during installation.