The Bomag 05810509 Hydraulic Gear Motor is a genuine OEM component designed for Bomag BW 161, BW 190, BW 202, BW 203, BW 205, and BW 203 ADO-4 tandem rollers. Sourced directly from Bomag, this hydraulic gear motor delivers an exact OEM fit across the full range of compatible machines. It is the correct replacement for BW 161 AD-4, BW 161 AC-4, BW 190 AD-4, BW 202 AD-4, BW 203 AD-4, BW 205 AD 4, and related variants, including AM and EU-Flex configurations. When your tandem roller's hydraulic drive system needs restoration, this genuine OEM part ensures the motor is returned to original operating condition.
Key Features
- Genuine OEM Hydraulic Performance — manufactured to Bomag's exact displacement and pressure specifications for consistent, full-torque hydraulic output on tandem rollers
- Direct Drop-In Replacement — matches the original port configuration, shaft dimensions, and mounting interface so this hydraulic gear motor installs without modification
- Broad Tandem Roller Coverage — fits BW 161, BW 190, BW 202, BW 203, and BW 205 tandem rollers, including AD-4, AC-4, ADH-4, ADO-4, AM, and EU-Flex variants
- Restored Drive Efficiency — a worn or failing hydraulic gear motor causes sluggish drum drive, uneven compaction, and excessive heat in the hydraulic circuit; this part restores full motor efficiency
- Hydraulic System Integrity — precision-machined gear set and sealing surfaces prevent internal bypass leakage, protecting downstream hydraulic components from premature wear
A hydraulic gear motor converts pressurized hydraulic fluid from the machine's pump into rotational mechanical force, driving the drum or propulsion system on the tandem roller. It is a critical link in the closed-loop hydraulic drive circuit — when it wears, internal leakage increases, reducing torque output and causing the roller to lose compaction force or propulsion responsiveness. Replacing a degraded motor with a genuine OEM unit like the Bomag 05810509 restores the hydraulic circuit to its designed flow and pressure balance, allowing the tandem roller to deliver consistent, controlled compaction pass after pass.
Part Details
| Part Number | 05810509 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Hydraulic Gear Motor |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Tandem Roller | BW 190 AD-4 AM | 00818309, 00824021 |
| Tandem Roller | BW 161 ADH-4 CHINA | 00818365 |
| Tandem Roller | BW 190 AD-4 | 00818379, 00818965, 00824009 |
| Tandem Roller | BW 202 AD-4 | 00818381, 00818961, 00824005 |
| Tandem Roller | BW 161 AC-4 | 00818589, 00818967 |
| Tandem Roller | BW 203 AD-4 AM | 00818591, 00824019, 00825067 |
| Tandem Roller | BW 203 AD-4 | 00818599, 00818963 |
| Tandem Roller | BW 161 AD-4 | 00818959, 00824003, 00824735 |
| Tandem Roller | BW 161 ADO-4 | 00824333, 00824335 |
| Tandem Roller | BW 161 AD-4 EU-Flex | 00824393 |
| Tandem Roller | BW 202 AD-4 EU-Flex | 00824395 |
| Tandem Roller | BW 203 AD-4 AM EU-Flex | 00824397 |
| Tandem Roller | BW203AD-4 | 00824739, 00826243 |
| Tandem Roller | BW 205 AD 4 | 00824889 |
| Tandem Roller | BW 203 ADO-4 | 00825049 |
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.
