The Wacker Neuson 5100011688 is a genuine OEM Locking Washer designed for the RD-series tandem rollers, covering RD24, RD27, RD28, RD40, and RD45 model families. Sourced directly from Wacker Neuson, this locking washer meets the exact material and dimensional specifications of the original component. Confirmed fitment spans a wide range of configurations within the RD tandem roller lineup, including standard, oscillating, combination, and DPF-equipped variants. When a locking washer fails or is lost during service, replacing it with the correct OEM part ensures fastener integrity is fully restored.
Key Features
- Genuine OEM Material Specification — Manufactured to Wacker Neuson's original hardness and surface finish tolerances, ensuring the washer locks under the torque loads specific to tandem roller fastener assemblies.
- Direct Drop-In Replacement — Matches the original hole diameter, outer diameter, and tab profile so it seats correctly against mating fasteners without rework or shimming.
- Broad RD-Series Coverage — Verified fitment across RD24-100, RD27-120, RD28-120, RD40-130, and RD45-140 tandem rollers, including oscillating-drum, combination-drum, and DPF variants.
- Fastener Security Under Vibration — Tandem rollers operate under continuous vibration; a correctly installed locking washer prevents bolt back-off that can lead to component loosening or structural misalignment during compaction passes.
- Essential Service Item — Locking washers are frequently replaced during scheduled maintenance or after disassembly; having the correct OEM part on hand keeps service intervals on schedule.
A locking washer is a hardened fastening component installed beneath a bolt or nut to resist loosening caused by vibration, dynamic load, or thermal cycling. It works by creating tension or mechanical interference at the joint interface, preventing the fastener from rotating back once torqued to spec. On tandem rollers like the RD-series, where drums, scrapers, and drive components are subject to sustained vibratory forces, locking washers play a critical role in keeping assemblies tight and aligned. A missing or deformed locking washer can allow fasteners to back out gradually, leading to component movement, accelerated wear, or failure of the secured assembly.
Part Details
| Part Number | 5100011688 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Locking Washer |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD27-120o | RD27-120o.3 | 5100047373 |
| RD24-100 O Tandem Roller | RD24-100O US | 5100021759 |
| RD45-140 Tandem Roller | RD45-140 US | 5100021802 |
| RD40-130 Tandem Roller | RD40-130 US | 5100021801 |
| RD40-130 O Tandem Roller | RD40-130O US | 5100021805 |
| RD24-100 O Tandem Roller | RD24-100 O | 5100011389 |
| RD27-120 O Tandem Roller | RD27-120 O | 5100011390 |
| RD28-120o | RD28-120o | 5100047379 |
| RD40-130 C Tandem Roller | RD40-130C US | 5100021803 |
| RD28-120o DPF | RD28-120o DPF | 5100047394 |
| RD28-120 O Tandem Roller | RD28-120O US | 5100021800 |
| RD24-100o DPF | RD24-100o DPF | 5100047393 |
| RD24-100o | RD24-100o | 5100047378 |
| RD45-140 C Tandem Roller | RD45-140C US | 5100021804 |
| RD40-130 O | RD40-130 O | 5100011395 |
| RD40-130o.3 | RD40-130o.3 | 5100047399 |
| RD24-100o.3 | RD24-100o.3 | 5100047372 |
| RD45-140 O Tandem Roller | RD45-140 O | 5100011396 |
| RD45-140 O Tandem Roller | RD45-140O US | 5100021806 |
| RD45-140o.3 | RD45-140o.3 | 5100047400 |
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.
