Rotor Clip DSH-20ST PDB100 External Retaining Ring 20mm

Product Description

The ROTOR CLIP DSH-20ST PDB100 is a metric external retaining ring designed for 20 mm shafts. It seats in a precision groove and holds components axially on the shaft without requiring threading, welding, or additional fasteners. Manufactured from 1060/1090 spring steel with a phosphate and oil finish, it achieves a hardness of 44-51 HRC for reliable retention under dynamic and static loads. The ring is produced to DIN 471 and SAE 1060-1090 standards, making it suitable for industrial assemblies, mechanical drives, and OEM equipment builds. Machinists, maintenance technicians, and mechanical assemblers typically install this part.

This external retaining ring fits 20 mm shafts and is used in a wide range of mechanical assemblies including gearboxes, motors, pumps, and actuators where positive axial retention is required. The phosphate and oil surface treatment provides a base level of corrosion resistance and aids in lubrication during installation. It is sized to a 19 mm nominal groove diameter with a groove width of 1.30 mm and a groove depth of 0.50 mm, making it appropriate for both OEM production and MRO replacement applications in industrial settings.

Key Features

• Shaft diameter: 20 mm; groove diameter: 19 mm nominal
• 1060/1090 spring steel construction with 44-51 HRC hardness rating
• Phosphate and oil finish for corrosion resistance and installation lubrication
• Conforms to DIN 471 and SAE 1060-1090 fastener standards
• Ring thickness of 1.20 mm with a tolerance of -0.0600 mm for consistent fit
• Groove width of 1.30 mm and groove depth of 0.50 mm for secure seating

Compatibility

Designed as an OEM-style external retaining ring for 20 mm shafts conforming to DIN 471 groove specifications in industrial mechanical assemblies.

Installation Notes

Installation requires appropriately sized external retaining ring pliers to compress and seat the ring into the shaft groove without distorting the ring or damaging the groove walls. Power down and de-energize any equipment before servicing components on the shaft. Inspect the groove for burrs or damage prior to installation, as groove condition directly affects retention capacity. Follow applicable machinery safety standards and manufacturer assembly documentation during installation.