The Wacker Neuson 5100011770 is a genuine OEM Hydraulic Cylinder designed for the RD18-80 and RD18-100 series tandem rollers. As a direct OEM replacement, this cylinder is manufactured to the same specifications as the original unit installed at the factory, ensuring correct fit and function across the full range of RD18 variants including standard, combination drum (RD18-100 C), and SE and US market configurations. Fitment is confirmed across a wide range of RD18-80 and RD18-100 builds, making part number 5100011770 the correct choice for most RD18 series hydraulic cylinder replacements.
Key Features
- Genuine OEM Construction: — Manufactured to original equipment tolerances, ensuring correct bore diameter, stroke length, and port alignment specific to the RD18 roller hydraulic circuit.
- Drop-In Replacement: — Mounts directly to the existing hydraulic lines and cylinder mounts on RD18-80 and RD18-100 tandem rollers without rework or modification to the machine's hydraulic system.
- Broad RD18 Series Coverage: — Verified fitment across RD18-80, RD18-80 US, RD18-80 SE, RD18-100, RD18-100 C, RD18-100 US, RD18-100 SE, and .3-generation variants of each.
- Sustained Compaction Force: — A properly functioning hydraulic cylinder maintains consistent drum-to-ground pressure and precise steering articulation, keeping the roller delivering uniform compaction pass after pass on asphalt and soil surfaces.
- Hydraulic System Integrity: — A worn or damaged cylinder can cause internal or external fluid loss, leading to erratic steering response or loss of drum pressure — replacing it with a correctly rated OEM unit restores full hydraulic system integrity.
The hydraulic cylinder on the RD18 tandem roller plays a central role in both the machine's articulated steering system and drum-force management. It converts hydraulic pressure from the machine's pump into controlled linear movement, allowing the operator to steer the roller accurately and apply consistent compaction load across the drum. When a hydraulic cylinder begins to fail — through seal degradation, internal bypass, or physical damage — the machine may exhibit sluggish or uneven steering, reduced compaction pressure, or visible fluid leaks at the cylinder body. Replacing the cylinder promptly with a correctly specified part restores full hydraulic performance and protects downstream components such as pumps, valves, and hoses from the strain of operating with a compromised circuit.
Part Details
| Part Number | 5100011770 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Hydraulic Cylinder |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD18-80.3 | RD18-80.3 | 5100055946 |
| RD18-100 | RD18-100 | 5100047361, 5100011383, 5100055775 |
| RD18-80 | RD18-80 | 5100047360, 5100055774, 5100011382 |
| RD18-80 Tandem Roller | RD18-80 US | 5100027572 |
| RD18-100c.3 | RD18-100c.3 | 5100055948 |
| RD18-100 C Tandem Roller | RD18-100 C US | 5100027574 |
| RD 18-100 C | RD18-100c | 5100047362, 5100055776 |
| RD18-100 C Tandem Roller | RD18-100 C | 5100011384 |
| Vibration Roller | RD18-80 SE | 5100044988 |
| RD18 | RD18-100.3 | 5100055947 |
| RD18-100 Tandem Roller | RD18-100 US | 5100027573 |
| Vibration Roller | RD18-100 SE | 5100044989 |
| Vibration Roller | RD18-100c 3 | 5100047363 |
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.
