The Wacker Neuson Pinion Gear Exciter is a genuine OEM component designed for the RT560, RT820, and RT820HT vibratory trench rollers. As a direct factory replacement, this part meets the same material and dimensional standards as the original, ensuring the exciter assembly operates as intended. It is confirmed to fit multiple machine numbers across the RT560, RT820, and RT820HT model lines, making it the correct choice when restoring full compaction performance to these remote-controlled trench rollers.
Key Features
- Genuine OEM Gear Geometry — machined to the exact tooth profile and hardness specification of the original, ensuring proper mesh and load transfer within the exciter drive.
- Direct Drop-In Replacement — engineered to the same shaft interface and gear dimensions as the factory part, so it installs into the exciter housing without modification.
- Broad RT-Series Fitment — confirmed for multiple build numbers across the RT560, RT820, and RT820HT vibratory trench roller families.
- Sustained Vibration Output — a correctly functioning pinion gear maintains consistent eccentric shaft speed, which is what delivers the compactive force needed in trench and cohesive soil applications.
- Wear-Resistance for High-Cycle Duty — the exciter gearset runs at high RPM continuously during operation; OEM-grade material and heat treatment resist premature wear that would degrade vibration amplitude over time.
The pinion gear in a vibratory trench roller's exciter assembly is responsible for transferring rotational power from the drive source to the eccentric weights that generate compactive vibration. When the eccentric weights spin at the correct speed and force, the roller's padfoot drums deliver the impact energy needed to compact cohesive soils and trench backfill to specification. A worn or damaged pinion gear reduces that eccentric shaft speed, causing a measurable drop in vibration amplitude and compaction output — and left unaddressed, gear wear accelerates quickly once tooth contact becomes uneven.
For fitment questions or help confirming compatibility with your specific RT560, RT820, or RT820HT machine number, please contact our parts team.
Part Details
| Part Number | 5000079790 |
|---|---|
| Old Part Number | 0079790 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Pinion Gear Exciter |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Vibratory Trench Roller | RT560 | 5000009001, 5000009000, 5000007643, 5000007642 |
| Vibratory Trench Roller | RT820 | 5000009003, 5000009002, 5000007644, 5000007652 |
| Vibratory Trench Roller | RT820HT | 5000007645, 5000008047 |
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.
