The Bomag 31901332 Ring Expander is a genuine OEM component designed for BW 24 R and C 560 B pneumatic tyred rollers. Sourced directly from Bomag, this ring expander meets the exact specifications required for proper installation and consistent performance in the field. It delivers a direct, drop-in fit for the machines it was engineered to serve, making it the straightforward choice for technicians maintaining these pneumatic tyred rollers. Confirm part number 31901332 against your machine's parts manual before ordering to ensure correct application.
Key Features
- Genuine OEM Construction — manufactured to Bomag's original specifications, ensuring the dimensional accuracy and material integrity that a ring expander demands for consistent seating and retention
- Direct-Fit Replacement — engineered to install in the same position and orientation as the original, with no rework or modification to surrounding components
- Confirmed Fitment — compatible with BW 24 R and C 560 B pneumatic tyred rollers; reference part number 31901332 in your Bomag parts catalog to verify coverage for your specific machine
- Restored Ring Integrity — a correctly functioning ring expander maintains proper ring tension and sealing pressure; a worn or failed expander leads to loss of compression, increased oil consumption, and accelerated internal wear
- OEM Part Number Traceability — stocked and sold as Bomag part number 31901332, giving fleet managers and service teams a reliable reference for reordering and inventory control
A ring expander is an internal engine component that maintains outward pressure on piston rings, ensuring they stay properly seated against the cylinder wall. This consistent contact is essential for maintaining compression and preventing combustion gases or oil from bypassing the piston. When a ring expander weakens or fails, ring seal is compromised — leading to blow-by, reduced power output, and potential engine damage if left unaddressed.
Part Details
| Part Number | 31901332 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Ring Expander |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Pneumatic Tyred Roller | BW 24 R | 00817552, 00817854 |
| Pneumatic Tyred Roller | C 560 B | 00817598 |
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.
