Rotor Clip CG-212ST Oil External Spiral Retaining Ring

Product Description

The ROTOR CLIP CG-212ST OIL is an external spiral retaining ring designed to secure components on shafts in mechanical assemblies. It fits a 2-1/8 inch shaft diameter and seats in a groove measuring 2.003 inches in diameter. The ring is manufactured from SAE 1060-1090 steel (UNS G10600-G10900) and carries an oil finish that provides corrosion resistance and eases installation. At 0.078 inches thick and 0.086 inches in groove width, this ring delivers reliable axial retention in demanding industrial, HVAC, and rotating-equipment applications. Installation requires no special tools beyond standard retaining ring pliers.

This retaining ring is suited for use in mechanical shaft assemblies found in motors, pumps, compressors, gear drives, and similar rotating equipment. The external spiral design allows single-turn installation directly into the shaft groove without the use of snap ring pliers in many configurations, making it practical in tight access situations common in HVAC compressor stacks, pump stages, and drive assemblies. It is typically installed by millwrights, mechanical technicians, or HVAC service professionals during component replacement or rebuild procedures.

Key Features

• External spiral ring design for tool-free or minimal-tool installation on shafts
• Fits 2-1/8 inch shaft diameter with a 2.003 inch groove diameter
• SAE 1060-1090 steel construction for high strength and durability
• Oil finish over steel for corrosion resistance and reduced installation friction
• Ring thickness of 0.078 inches with tight tolerance of plus or minus 0.003 inches
• Meets ISO 13485:2015 standards; groove width tolerance held to 0.000 to 0.005 inches

Compatibility

Designed as an OEM-style replacement external spiral retaining ring for 2-1/8 inch shaft diameter applications in industrial and mechanical rotating equipment assemblies.

Installation Notes

Installation and removal should be performed by qualified mechanical or HVAC technicians. Always de-energize and lock out equipment before servicing any shaft assembly. Use retaining ring pliers or the appropriate spiral ring installation tool to seat the ring fully and evenly into the shaft groove. Inspect the groove for wear or damage before installing a replacement ring, as an out-of-tolerance groove will compromise axial retention.