The Wacker Neuson Gear Motor is a genuine OEM gear motor designed for the RD40-130 and RD45-140 series double drum rollers, including standard, canopy, open-ROPS, and DPF-equipped variants. As a direct OEM part sourced from Wacker Neuson, it meets every original design requirement for torque output, mounting dimensions, and hydraulic interface — no guesswork on compatibility. This gear motor covers an extensive range of RD-series configurations, making it the correct choice whether you're servicing an older build or a current DPF-compliant machine. Keep this part number, on hand for planned maintenance or unscheduled repairs to get your roller back to full compaction capacity fast.
Key Features
- Genuine OEM Torque and Speed Rating — Manufactured to Wacker Neuson's exact output specifications, ensuring the drum delivers consistent drive force at the correct rotational speed for effective soil and asphalt compaction.
- Direct Hydraulic Port Match — Hydraulic connections, port sizing, and mounting bolt pattern match the original installation exactly, allowing straightforward swap-out without adapters or rework.
- Broad RD-Series Coverage — Fits RD40-130 and RD45-140 families across standard, canopy (c), open-ROPS (o), .3-revision, and DPF variants, consolidating one part number across a wide fleet of Wacker Neuson double drum rollers.
- Sustained Drum Drive Performance — A healthy gear motor maintains steady drum rotation under load; a worn or failing unit causes sluggish or uneven drum movement that compromises compaction quality and machine productivity.
- OEM Traceability — Sourced directly through the Wacker Neuson parts chain, this component carries full OEM part traceability — important for service records and equipment resale value.
The gear motor is the hydraulic-to-mechanical conversion unit that drives the compaction drum on a double drum roller. It receives pressurized hydraulic fluid from the machine's drive circuit and converts that energy into rotational torque, which turns the drum and propels the machine across the work surface. When a gear motor begins to fail — through internal leakage, worn gears, or seal degradation — the drum may lose traction, rotate inconsistently, or stop driving altogether, leaving the machine unable to compact effectively and often unable to move under its own power. Replacing a worn gear motor with a correct OEM unit restores full propulsion and compaction capability.
Part Details
| Part Number | 5100058557 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Gear Motor |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD40-130 | RD40-130 | 5100047382 |
| RD45-140 | RD45-140 | 5100047383 |
| RD40-130c | RD40-130c | 5100047384 |
| RD45-140c | RD45-140c | 5100047385 |
| RD40-130o | RD40-130o | 5100047386 |
| RD45-140o | RD45-140o | 5100047387 |
| RD40-130.3 | RD40-130.3 | 5100047395 |
| RD45-140.3 | RD45-140.3 | 5100047396 |
| RD40-130c.3 | RD40-130c.3 | 5100047397 |
| RD45-140c.3 | RD45-140c.3 | 5100047398 |
| RD40-130o.3 | RD40-130o.3 | 5100047399 |
| RD45-140o.3 | RD45-140o.3 | 5100047400 |
| RD40-130 DPF | RD40-130 DPF | 5100055777 |
| RD45-140 DPF | RD45-140 DPF | 5100055778 |
| RD40-130c DPF | RD40-130c DPF | 5100055779 |
| RD45-140c DPF | RD45-140c DPF | 5100055780 |
| RD40-130o DPF | RD40-130o DPF | 5100055781 |
| RD45-140o DPF | RD45-140o DPF | 5100055782 |
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.
