The Bomag 05521120 Supporting Disc is a genuine OEM component designed for a wide range of Bomag walk-behind rollers, tandem rollers, and single drum rollers. Sourced directly from Bomag, this supporting disc meets the same specifications as the original part installed at the factory, ensuring consistent performance across the machine lineup it serves. This disc fits models including the BW 60 S, BW 75 S, BW 75 HS, and BW 75 S-2 walk-behind rollers; an extensive range of BW 100, BW 120, BW 138, BW 141, BW 144, BW 151, BW 154, BW 161, BW 164, BW 190, BW 202, BW 203, and BW 213 series tandem and single drum rollers spanning -2, -4, and -5 generation variants. When you order part number 05521120 from DHS Equipment, you receive an authentic Bomag part backed by OEM quality assurance.
Key Features
- Genuine OEM Construction — manufactured to Bomag's exact material and dimensional specifications for a supporting disc, delivering the structural integrity and wear resistance the original design demands
- Direct Drop-In Replacement — engineered to the same tolerances as the original, allowing this disc to seat and secure correctly without rework or modification to the host assembly
- Broad Model Coverage — fits Bomag walk-behind rollers including the BW 60 S, BW 75 S, and BW 75 HS; tandem rollers across the BW 120, BW 141, BW 151, BW 161, BW 190, BW 202, and BW 203 series; and BW 213 single drum rollers across multiple generations
- Structural Support Maintained — a worn or damaged supporting disc compromises the clamping and load-bearing function of the assembly it anchors; replacing it promptly restores proper alignment and load distribution
- Verified Part Number Traceability — ordering by Bomag part number 05521120 eliminates fitment guesswork and ensures you receive the correct disc for your specific machine generation
A supporting disc is a precision-machined load-bearing component used to distribute clamping or compressive forces evenly across mating surfaces within a mechanical assembly. In roller applications, this disc provides a stable seating surface that keeps adjacent components correctly aligned under the vibration and dynamic loads generated during compaction work. When a supporting disc wears down, becomes deformed, or develops surface damage, it can allow movement between parts that should remain fixed, leading to accelerated wear on surrounding components and a gradual loss of assembly integrity. Replacing this disc with an OEM part restores the designed load path and protects the longevity of the broader assembly.
Part Details
| Part Number | 05521120 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Supporting Disc |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Walk-Behind / Light Roller | BW 60 S | 00810011, 00817556 |
| Tandem Roller | BW 141 AD-2 | 00817474 |
| Tandem Roller | BW 144 AD-2 | 00817477, 00817478 |
| Tandem Roller | BW 151 AC-2 | 00817485 |
| Tandem Roller | BW 151 AD-2 | 00817486 |
| Tandem Roller | BW 154 AD-2 | 00817490, 00817491, 00817599 |
| Tandem Roller | BW 161 AC-2 | 00817492 |
| Tandem Roller | BW 161 AD-2 | 00817493, 00817494 |
| Tandem Roller | BW 164 AC-2 | 00817495 |
| Tandem Roller | BW 202 AD-2 | 00817516, 00817517 |
| Tandem Roller | BW 202 AHD-2 | 00817518 |
| Walk-Behind / Light Roller | BW 75 S-2 | 00817565, 00817971, 00818077, 00818781, 00811409 |
| Tandem Roller | BW141AD 2 | 00817573 |
| Tandem Roller | BW 164 AD-2 | 00817640 |
| Tandem Roller | BW 161 AD-4 | 00817641, 00818481 |
| Tandem Roller | BW 202 AD-4 | 00817642, 00818381 |
| Tandem Roller | BW 141 AD-4 | 00817697, 00818561 |
| Tandem Roller | BW 154 AD-4 AM | 00817699, 00818447 |
| Tandem Roller | BW 161 ADH-4 | 00817739 |
| Tandem Roller | BW 190 AD-4 | 00817823, 00818379 |
| Tandem Roller | BW 190 AD-4 AM | 00817825, 00818309 |
| Tandem Roller | BW 203 AD-4 AM | 00817837, 00818591 |
| Tandem Roller | BW151AD 4 | 00817843 |
| Tandem Roller | BW 154 AD-4 | 00817901, 00818557 |
| Tandem Roller | BW 151 AD-4 AM | 00817913, 00818555 |
| Tandem Roller | BW 141 AD-4 AM | 00817925, 00818553 |
| Tandem Roller | BW 161 AC-4 | 00817947, 00818589 |
| Tandem Roller | BW 151 AC-4 AM | 00817953, 00818559 |
| Tandem Roller | BW 161 ADH-4 CHINA | 00818365 |
| Tandem Roller | BW 151 AD-4 | 00818563 |
| Tandem Roller | BW 151 AC-4 | 00818565, 00819699 |
| Tandem Roller | BW 203 AD-4 | 00818599 |
| Single Drum Roller | BW 213 DH-4 | 00824143, 00824153 |
| Single Drum Roller | BW 213 DH-4i | 00824439 |
| Single Drum Roller | BW 213 | 00824577, 00825991 |
| Single Drum Roller | BW 213 DH 4I | 00824677, 00824679 |
| Single Drum Roller | BW213DH P-5 | 00824729, 00825989 |
| Tandem Roller | BW 138 AD-5 | 00824927, 00825559 |
| Tandem Roller | BW 138 AC-5 | 00825561 |
| Tandem Roller | BW 120 AD-5 | 00825567 |
| Tandem Roller | BW 100 AC-5 | 00825569 |
| Tandem Roller | BW 120 AC-5 | 00825571 |
| Single Drum Roller | BW 213 DH | 00827275 |
| Walk-Behind / Light Roller | BW 75 HS | 00810015 |
| Walk-Behind / Light Roller | BW 75 S | 00810014, 00811406 |
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.
