The Bomag 31780320 Retainer Ring is a genuine OEM component designed for a wide range of Bomag tandem rollers, single drum rollers, and pneumatic tyred rollers. As a direct OEM replacement, this retainer ring is manufactured to the same specifications as the original, ensuring a correct fit across compatible machines including the BW 184 AD and BW 184 AD-2 tandem rollers, BW 177 D-3, BW 177 DH-3, BW 177 PDH-3, BW 213 D-3, BW 213 DH-3 USA, BW 213 PDH-3, BW 213 PDH-3 USA, BW 212 D-40 BR, and C 850 C single drum rollers, as well as the BW 24 R and C 560 B pneumatic tyred rollers. Sourcing a genuine Bomag part means you get the exact component engineered for these machines, eliminating guesswork on compatibility and keeping your roller running as intended.
Key Features
- Genuine OEM Retention Precision — manufactured to original Bomag tolerances, ensuring the ring seats and holds exactly as designed for secure component retention
- Drop-In Replacement — matches the original retainer ring's geometry and dimensions, installing directly into position without rework or modification
- Broad Roller Coverage — fits Bomag tandem rollers including the BW 184 AD and BW 180 AD, single drum rollers including the BW 213 D-3 and BW 177 PDH-3 series, and pneumatic tyred rollers including the BW 24 R and C 560 B
- Prevents Component Migration — a properly functioning retainer ring keeps internal components locked in their correct position; a worn or failed ring allows movement that accelerates wear throughout the assembly
- Verified Part Number — order with confidence using Bomag part number 31780320, cross-referenced to the correct fitment applications listed above
A retainer ring is a small but critical fastening component used to secure rotating or sliding parts — such as bearings, shafts, and pins — within their housings or grooves. It prevents axial movement, keeping internal assemblies properly aligned during operation. When a retainer ring fails or becomes deformed, the components it holds in place can shift, causing accelerated wear, vibration, or mechanical failure that can propagate through the surrounding assembly. Replacing a worn retainer ring promptly with the correct OEM part restores proper component retention and protects the integrity of the larger assembly it serves.
Part Details
| Part Number | 31780320 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Retainer Ring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Tandem Roller | BW 184 AD | 00810713, 00810715, 00817514 |
| Single Drum Roller | BW 177 D-3 | 00815310, 00817503 |
| Single Drum Roller | BW 213 D-3 | 00815329, 00817522 |
| Single Drum Roller | BW 177 DH-3 | 00817505 |
| Single Drum Roller | BW 177 DH 3 | 00817506 |
| Single Drum Roller | BW 177 PDH-3 | 00817508 |
| Tandem Roller | BW 180 AD | 00817513 |
| Single Drum Roller | BW 213 PDH-3 | 00817529 |
| Pneumatic Tyred Roller | BW 24 R | 00817552, 00817854 |
| Single Drum Roller | BW177PDH 3 | 00817579 |
| Single Drum Roller | BW177DH-3 | 00817580 |
| Single Drum Roller | C 850 C | 00817583 |
| Single Drum Roller | BW177D-3 | 00817586 |
| Pneumatic Tyred Roller | C 560 B | 00817598 |
| Tandem Roller | BW 184 AD-2 AM | 00817600 |
| Single Drum Roller | BW 213 DH-3 USA | 00817671 |
| Single Drum Roller | BW 213 PDH-3 USA | 00817673 |
| Tandem Roller | BW 184 AD-2 | 00817841 |
| Single Drum Roller | BW 212 D-40 BR | 00824413, 00824785 |
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.
