Rotor Clip DSH-25SG External Retaining Ring 25mm Din 471

Product Description

The ROTOR CLIP DSH-25SG is a metric external retaining ring designed for 25 mm shaft diameters with a groove diameter of 23.9 mm. Manufactured from 420 stainless steel with a phosphate finish, this ring provides reliable axial retention on shafts in demanding mechanical assemblies. It conforms to DIN 471 fastener standards and meets ISO 13485:2015 requirements. With a ring thickness of 1.20 mm and a groove width of 1.30 mm, the DSH-25SG is dimensioned for precise fitment in OEM and field-service applications. Licensed tradespeople and mechanical assemblers working on HVAC equipment, pump assemblies, motors, and rotating machinery rely on this style of retaining ring for secure component positioning.

The DSH-25SG is suited for use in residential and commercial mechanical systems where metric external retaining rings are specified. Typical applications include motor shaft assemblies, fan blade retention, pump impeller shafts, and other rotating or reciprocating assemblies that require an external snap ring per DIN 471. The phosphate finish provides a base layer of corrosion resistance appropriate for indoor mechanical environments. This part is sold in packages of 2 with a minimum order quantity of 1.

Key Features

• Conforms to DIN 471 fastener standard and meets ISO 13485:2015
• 420 stainless steel construction with phosphate finish for corrosion resistance
• 25 mm shaft diameter with 23.9 mm groove diameter and -0.21 mm groove diameter tolerance
• Ring thickness of 1.20 mm with a tight tolerance of -0.06 mm for consistent seating
• Groove width of 1.30 mm and groove depth of 0.55 mm for secure axial lock
• Metric measurement system; free diameter of 23.20 mm for ease of installation

Compatibility

Designed as an OEM-style external retaining ring for 25 mm metric shafts conforming to DIN 471 groove specifications.

Installation Notes

Installation and removal of external retaining rings should be performed using snap ring pliers sized for the ring thickness and free diameter to avoid distorting the ring or damaging the groove. Ensure the shaft is depressurized, de-energized, or decoupled from any drive source before servicing. Do not over-spread the ring during installation, as excessive deformation can compromise retention force. Inspect the groove dimensions for compliance with DIN 471 tolerances before installing a replacement ring.