The Bomag 05521425 Supporting Disc is a genuine OEM component designed for BW 80, BW 90, and BW 100 series tandem rollers, as well as the BW 900-50 walk-behind roller. Sourced directly from Bomag, this supporting disc meets the original engineering specifications for a direct, verified fit across a wide range of Bomag roller models. Compatible machines include the BW 80 AD-2, BW 90 AC-2, BW 90 AD-2, BW 80 AD-5, BW 90 AD-5, BW 90 AC-5, BW 90 SC-5, BW 90 SL-5, BW 90 SL-5 CC, BW 100 SCC-5, BW 100 ADM-5, BW 100 SC-5, BW 100 ACM-5, BW 100 SLM-5, and the BW 900-50. Ordering by part number 05521425 ensures you receive the correct disc for your specific machine.
Key Features
- Genuine OEM Dimensional Accuracy — manufactured to Bomag's original tolerances, this supporting disc maintains the correct contact geometry and load distribution critical for drum and drivetrain assemblies on tandem and walk-behind rollers.
- Drop-In Replacement — this disc installs directly in place of the original without reworking mounting surfaces or adjacent components, keeping service time to a minimum.
- Broad Roller Coverage — fits BW 80, BW 90, and BW 100 series tandem rollers across multiple generation variants, including the BW 90 AD-2, BW 90 AD-5, BW 100 SCC-5, BW 100 SLM-5, and others, as well as the BW 900-50 walk-behind roller.
- Structural Integrity Under Load — a correctly fitted supporting disc maintains proper alignment and bearing seat stability; a worn or missing disc can lead to uneven load transfer, accelerated wear on adjacent components, and compromised drum operation.
- Verified Part Number — ordering by Bomag part number 05521425 confirms you receive the exact disc specified for your machine, eliminating guesswork during service.
The supporting disc serves as a structural interface component within the roller's drum or drivetrain assembly, providing a stable bearing or mounting surface that distributes rotational and axial loads evenly. It keeps adjacent components properly seated and aligned during operation, which is essential for smooth drum rotation and consistent compaction performance. When a supporting disc wears or fails, it can cause misalignment, increased vibration, and accelerated wear to surrounding parts — making timely replacement with a correct OEM disc an important part of routine drivetrain maintenance.
Part Details
| Part Number | 05521425 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Supporting Disc |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Tandem Roller | BW 80 AD-2 | 00817566 |
| Tandem Roller | BW 90 AC-2 | 00817568 |
| Tandem Roller | BW 90 AD-2 | 00817569, 00818507 |
| Tandem Roller | BW 100 SCC-5 | 00818505, 00824127, 00825295 |
| Tandem Roller | BW 80 AD-5 | 00818707, 00824117, 00825283 |
| Tandem Roller | BW 90 AD-5 | 00818709, 00824119, 00825285 |
| Tandem Roller | BW 100 ADM-5 | 00818711, 00824121, 00825289 |
| Tandem Roller | BW 90 SC-5 | 00818713, 00824125 |
| Tandem Roller | BW 100 SC-5 | 00818715, 00824129 |
| Tandem Roller | BW 100 ACM-5 | 00818717, 00824123, 00825291 |
| Walk-Behind / Light Roller | BW 900-50 | 00818921, 00825617, 00826539, 00827119 |
| Tandem Roller | BW 90 AC-5 | 00825287 |
| Tandem Roller | BW 90 SL-5 | 00826551 |
| Tandem Roller | BW 90 SL-5 CC | 00826783 |
| Tandem Roller | BW 100 SLM-5 | 00827125 |
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.
