Wacker Neuson 5002001047 Internal Retaining Ring 52mm x 2mm

The Wacker Neuson Internal Retaining Ring 52mm x 2mm is a genuine OEM retaining ring designed for a broad range of Wacker Neuson AR series external vibrators, EH series electric breakers, BS30 rammers, and AP series vibratory plates. Sourced directly through Wacker Neuson's authorized parts program, this ring matches the exact dimensions and material specification of the original component. It fits dozens of AR external vibrator configurations — including AR 51, AR 52, AR 53, AR 54, AR 61, AR 62, AR 63, AR 64, AR 41, AR 42, AR 43, and AR 44 series units — as well as EH 22, EH 23, EH 24, EH 25, EH 27, EH 50, EH 70, and EH 75 electric breaker models. Keeping the correct retaining ring in place is essential to maintaining shaft and bearing position across all of these machines.

Key Features

• Genuine OEM Dimensional Accuracy — Manufactured to the exact 52mm bore diameter and 2mm groove width of the original ring, ensuring a secure snap-fit with no slop or binding in the groove.
• Drop-In Installation — Designed to seat directly into the original retaining groove with standard snap-ring pliers — no machining, resizing, or groove modification needed.
• Broad Fitment Across Wacker Neuson Equipment — Covers AR 41 through AR 64 external vibrator families, EH 22 through EH 75 electric breaker lines, BS30 rammers, and AP1840/AP1850 vibratory plates in a single part number.
• Maintains Shaft and Bearing Positioning — A correctly seated internal retaining ring prevents axial movement of rotating or reciprocating components; a worn or missing ring allows shaft migration that accelerates bearing wear and leads to mechanical failure.
• Built for High-Vibration Environments — Wacker Neuson OEM rings are specified for the cyclic loading and continuous vibration inherent to compaction and demolition equipment, where undersized or incorrect-material rings can fatigue and fail prematurely.

An internal retaining ring — sometimes called a circlip — is a small but critical fastener that snaps into a machined groove inside a bore to hold a shaft, bearing, or pin in its correct axial position. In vibrators and electric breakers, these rings are subjected to constant cyclic loading, and their primary job is to resist the thrust forces that would otherwise allow internal components to walk out of position. When a retaining ring fails, becomes distorted, or is installed incorrectly, bearings lose their seating, shafts can shift under load, and the resulting metal-to-metal contact rapidly damages surrounding components — turning a low-cost ring replacement into a far more involved repair.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.