Rotor Clip DHO-20ST PDB100 Internal Snap Ring 20mm

Product Description

The ROTOR CLIP DHO-20ST PDB100 is a metric internal snap retaining ring designed to seat in a machined internal groove and retain components on a shaft or within a bore. Manufactured from 1060/1090 spring steel with a phosphate finish, this ring delivers reliable thrust load capacity in compact assemblies. It measures 20mm bore diameter with a 21mm nominal size and 21.5mm free outer diameter. Ring thickness is 1mm, groove width is 1.1mm, and groove depth is 0.5mm. It is sized and toleranced to ISO standards and is a standard choice for mechanical assemblies requiring internal retention.

This retaining ring is suited for industrial and mechanical applications where internal groove retention is required. Typical installations include gearboxes, motors, pumps, actuators, and precision assemblies using metric bore sizing. The phosphate finish provides baseline corrosion resistance for general indoor and sheltered-environment use. It is handled by mechanical assemblers and maintenance technicians working on metric-standard equipment across manufacturing, HVAC, and industrial service sectors.

Key Features

• Spring steel construction, material grade 1060/1090 for consistent snap and retention force
• Phosphate finish for corrosion resistance in general service environments
• Groove width 1.1mm and groove depth 0.5mm for precise seating
• Thrust load capacity of 1213.92 pounds (groove safety factor) and 1618.56 pounds (ring safety factor)
• Rockwell 30N hardness rating of 66-72.0 for durability under cyclic load
• Groove diameter tolerance of -0.130 to 0.130mm for repeatable fitment

Compatibility

Designed as an OEM-style metric internal snap retaining ring for 20mm bore diameter grooves per ISO 13485:2016 and SAE 1060-1090 standards.

Installation Notes

Installation is performed by mechanical technicians using internal snap ring pliers sized for the ring diameter. Depressurize, de-energize, and lock out the assembly before disassembling any housing or shaft. Confirm the internal groove dimensions match the ring specifications before installation. Never reuse a snap ring that has been removed, as the spring set may be compromised.