Wacker Neuson 5000021147 Retaining Ring

The Wacker Neuson Retaining Ring is a genuine OEM component designed for CT36 and CT48 walk-behind concrete trowels and the DPU series reversible vibratory plate compactors. Sourced directly from Wacker Neuson, this retaining ring matches the exact material grade, diameter, and tension spec of the original part — ensuring it seats and locks correctly without rework. It fits an extensive range of CT36 and CT48 trowel configurations as well as DPU 4045H, DPU 4545H, DPU 5045H, DPU 5545H, DPU 6055, DPU 6555H, and DPU 7060 series machines. When you need a direct, like-for-like replacement, genuine OEM is the straightforward choice.

Key Features

• Exact OEM Retention Geometry — Manufactured to the same groove-fit dimensions as the original, so the ring snaps into position and holds under operational load without slipping or deforming.
• Genuine Wacker Neuson Part — Part number 5000021147 is sourced directly from Wacker Neuson, carrying the same material specification as the ring installed at the factory.
• Broad CT and DPU Fitment — Confirmed fit across CT36 and CT48 walk-behind concrete trowel families and DPU 4045H through DPU 7060 reversible vibratory plate compactor series.
• Maintains Shaft and Assembly Alignment — A correctly functioning retaining ring keeps rotating or sliding components positively located on their shaft or bore; a worn or missing ring allows axial movement that accelerates bearing and seal wear.
• Straightforward Drop-In Replacement — Installs with standard snap-ring pliers into the existing groove — no machining, sizing, or adaptation needed on either the trowel or compactor platforms.

A retaining ring — also called a snap ring or circlip — is a fastening device that seats into a machined groove on a shaft or inside a bore to prevent lateral movement of an adjacent component such as a bearing, gear, or pulley. On walk-behind concrete trowels like the CT36 and CT48, retaining rings are used throughout the rotor and gearbox assemblies to keep drive components properly positioned during the high-cycle rotational loads of finish troweling. On DPU reversible vibratory plate compactors, they perform the same locating function within the exciter and drive train. When a retaining ring cracks, distorts, or loses its spring tension, the component it retains can migrate axially — causing accelerated wear on neighboring parts, vibration, and eventual mechanical failure if not addressed promptly.

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.