Rotor Clip HO-137ST Zd Internal Retaining Ring 1.375 in

Product Description

The ROTOR CLIP HO-137ST ZD is a snap-type internal retaining ring designed to seat in a machined groove inside a bore, securing components axially without the need for threading or welding. Manufactured from spring steel, this ring measures 1.375 inches in bore diameter with a ring thickness of 0.05 inches and a groove width of 0.056 inches. It carries a thrust load capacity of 5,050 pounds at the groove safety factor and 9,846 pounds at the ring safety factor. Licensed tradespeople and MRO technicians install this ring in motors, pumps, gearboxes, and other rotating assemblies where reliable internal axial retention is required.

This internal retaining ring is suited for use in a wide range of industrial and mechanical assemblies that require a compact, low-profile axial retention solution inside a bored housing. Typical applications include HVAC blower motors, pump housings, gear reduction assemblies, and hydraulic actuator bores. The snap-type design allows for quick installation and removal using standard retaining ring pliers, making it practical for both field service and production floor environments.

Key Features

• Snap-type internal design seats securely in a machined internal groove
• Spring steel construction provides reliable tension and long service life
• Groove width of 0.056 inches with tight tolerance of -0.000 to 0.004 inches for precise fit
• Ring thickness of 0.05 inches with tolerance of -0.002 to 0.002 inches
• Thrust load capacity of 5,050 pounds (groove) and 9,846 pounds (ring) for demanding load conditions
• Meets ISO 13485:2016 standards

Compatibility

Designed as an OEM-style replacement internal retaining ring for bored housings with a 1.375-inch internal groove diameter, suitable for motors, pumps, and mechanical assemblies requiring axial component retention.

Installation Notes

Installation and removal should be performed by a qualified technician using the correct size internal retaining ring pliers to prevent ring distortion or eye injury. Always de-energize and lock out the equipment before servicing any assembly containing retaining rings. Confirm groove diameter, groove width, and groove depth match ring specifications before installation. Do not over-expand the ring during installation, as this may compromise its retention load capacity.