Rotor Clip DSH-40ST Pd External Retaining Ring 40mm

Product Description

The ROTOR CLIP DSH-40ST PD is a DIN 471 external retaining ring designed to seat in a machined groove on a shaft and axially retain components such as bearings, gears, and collars. Built from DIN I7221 I7223 spring steel with a phosphate finish, this ring provides reliable corrosion resistance and mechanical strength in demanding industrial and mechanical applications. Key dimensions include a 40 mm shaft diameter, a 37.5 mm groove diameter, and a ring thickness of 1.75 mm. It is a metric-dimensioned fastener conforming to DIN 471 and ISO 13485:2015 standards and is installed using standard external retaining ring pliers.

This retaining ring is suited for use in mechanical assemblies where external shaft retention is required. Typical applications include industrial machinery, drive shafts, motors, gearboxes, and similar rotating or stationary shaft assemblies. The phosphate finish offers moderate corrosion protection appropriate for indoor and light-duty industrial environments. This part is packaged in quantities of five and is ordered in multiples of one, making it practical for both single-unit repairs and small-batch assembly work performed by maintenance technicians and mechanical assemblers.

Key Features

• DIN 471 standard external retaining ring for 40 mm shaft diameter
• Spring steel construction per DIN I7221 I7223 for reliable snap retention and fatigue resistance
• Phosphate finish provides moderate corrosion protection
• Groove diameter of 37.5 mm with a tolerance of -0.25 mm for precise fitment
• Ring thickness of 1.75 mm with a tolerance of -0.06 mm
• Conforms to ISO 13485:2015 quality standard

Compatibility

Designed as an OEM-style external retaining ring replacement for metric shaft assemblies requiring a DIN 471 compliant ring on a 40 mm shaft diameter.

Installation Notes

Installation requires external retaining ring pliers sized for the ring free diameter. Power down and de-energize any rotating equipment before servicing. Confirm that the shaft groove dimensions match the ring specifications before installation to avoid improper seating. Do not over-expand the ring during installation, as excessive stress can cause deformation or failure.