The Bomag 05816223 Hydraulic Gear Motor is a genuine OEM component designed for Bomag BW 138 AD, BW 138 AC, BW 138-AD, BW 125 AD-4, and BW 125 AC-4 tandem rollers. Sourced directly from Bomag, this hydraulic gear motor is built to the same specification as the original unit it replaces, ensuring a direct, hassle-free installation in the machines it was engineered for. If your tandem roller is showing signs of sluggish drum drive, erratic travel performance, or hydraulic system inefficiency, replacing this motor with part number 05816223 restores the hydraulic output your machine depends on.
Key Features
- Genuine OEM Hydraulic Output — manufactured to Bomag's exact displacement and pressure ratings, so this motor delivers the precise rotational force the drum drive circuit requires
- Direct Bolt-In Replacement — port sizing, mounting flange, and shaft dimensions match the original, allowing installation without machining or adapter fittings
- Confirmed Tandem Roller Fitment — compatible with BW 138 AD, BW 138 AC, BW 138-AD, BW 125 AD-4, and BW 125 AC-4 tandem rollers
- Consistent Drum Drive Performance — a properly functioning hydraulic gear motor maintains steady drum rotation and travel speed, keeping compaction output uniform across the mat
- Hydraulic System Integrity — OEM internal clearances and seal materials help prevent internal bypass and pressure loss that can lead to broader hydraulic circuit damage if left unaddressed
A hydraulic gear motor converts pressurized hydraulic fluid into rotational mechanical output, driving the drum or travel circuit of the machine. In tandem rollers like the BW 138 and BW 125 series, the hydraulic gear motor plays a central role in delivering consistent drum speed and tractive effort across varying load conditions. When this motor begins to wear internally — through worn gear sets or compromised seals — the result is reduced drive force, uneven compaction, and increased heat buildup in the hydraulic system, all of which can accelerate wear on connected components.
Part Details
| Part Number | 05816223 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Hydraulic Gear Motor |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Tandem Roller | BW 138 AD | 00810105, 00810191, 00817473, 00818359 |
| Tandem Roller | BW 138 AC | 00817472, 00818361 |
| Tandem Roller | BW 138-AD | 00817572, 00818389 |
| Tandem Roller | BW 125 AD-4 | 00817937, 00818473 |
| Tandem Roller | BW 125 AC-4 | 00818271, 00818475 |
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.
