The Bomag 05521820 Shim is a genuine OEM component designed for Bomag BW 145, BW 177, and BW 213 series single drum rollers, as well as the C 825 C single drum roller. Sourced directly from Bomag, this shim delivers an exact fit against original tolerances, ensuring proper spacing and alignment in the assembly it serves. It is compatible across multiple generation variants — including DH, PDH, DHC, PDHC, and PL configurations — spanning the -3, -4, -40, -50, and -5 production generations. When it's time to service or rebuild your machine, using the correct OEM part number 05521820 is the straightforward way to maintain the integrity of the original assembly.
Key Features
- OEM Dimensional Accuracy — manufactured to Bomag's original spacing specification, so this shim delivers the correct clearance and load distribution for the assembly it seats within
- Direct Drop-In Replacement — matches the original profile and thickness, fitting into position without rework or machining of mating components
- Broad Generation Coverage — fits BW 145, BW 177, and BW 213 single drum rollers across DH, PDH, DHC, PDHC, and PL variants from the -3 through -5 generation series, plus the C 825 C single drum roller
- Alignment and Load Integrity — a correctly installed shim prevents uneven bearing wear, component misalignment, and premature failure of surrounding drivetrain or drum components
- Genuine Bomag Part — supplied as an authentic OEM component, verified under part number 05521820, with the material grade and geometry Bomag specifies for this application
A shim is a thin, precision-dimensioned spacer used to set and maintain the correct clearance or alignment between two mating components. In a single drum roller, shims are commonly found in drum bearings, drive assemblies, and gearbox interfaces, where even a small deviation in spacing can lead to accelerated wear, vibration, or loss of drive efficiency. When a shim wears, deforms, or is lost during service, replacing it with the correct OEM-specified part restores the original geometry of the assembly and protects the surrounding components from unnecessary stress.
Part Details
| Part Number | 05521820 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Shim |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Single Drum Roller | BW 145 DH-3 | 00817481, 00817638 |
| Single Drum Roller | BW 145 PDH-3 | 00817483, 00817639 |
| Single Drum Roller | BW 177 DH-3 | 00817505, 00817751 |
| Single Drum Roller | BW 177 PDH-3 | 00817508 |
| Single Drum Roller | BW 213 DH-3 | 00817526, 00817589 |
| Single Drum Roller | BW 213 PDH-3 | 00817530, 00817590 |
| Single Drum Roller | BW145PDH 3 | 00817577 |
| Single Drum Roller | C 825 C | 00817578 |
| Single Drum Roller | BW177PDH 3 | 00817579 |
| Single Drum Roller | BW177DH-3 | 00817580 |
| Single Drum Roller | BW 213 DH-3 USA | 00817671 |
| Single Drum Roller | BW 213 PDH-3 USA | 00817673 |
| Single Drum Roller | BW 177 DH-3 USA | 00817677 |
| Single Drum Roller | BW 177 PDH-3 USA | 00817679 |
| Single Drum Roller | BW 177 PDH-4 | 00817763, 00818541 |
| Single Drum Roller | BW177DH 3 | 00817865 |
| Single Drum Roller | BW 145-DH-3 | 00817929 |
| Single Drum Roller | BW 177 DHC-4 | 00818035, 00818455 |
| Single Drum Roller | BW 177 DH-40 | 00818169 |
| Single Drum Roller | BW 177 PDH-40 | 00818171 |
| Single Drum Roller | BW 177 PDHC-4 | 00818283, 00818539 |
| Single Drum Roller | BW 145 DH 40 BW 145 DH 4 | 00818325 |
| Single Drum Roller | BW 145 PDH 40 BW145 PDH 4 | 00818327 |
| Single Drum Roller | BW 177 DH-4 | 00818543, 00824037 |
| Single Drum Roller | BW177PDH 40 | 00818585 |
| Single Drum Roller | BW145DH 40 | 00818939, 00818941 |
| Single Drum Roller | BW145PDH 40 | 00818943 |
| Single Drum Roller | BW 177 DH-50 | 00824089 |
| Single Drum Roller | BW 177 PDH-50 | 00824091 |
| Single Drum Roller | BW 145 DH-5 | 00824471, 00825721 |
| Single Drum Roller | BW 145 PDH-5 | 00824473, 00825723 |
| Single Drum Roller | BW 177 DH-5 | 00824475, 00824917, 00825727 |
| Single Drum Roller | BW 177 PDH-5 | 00824477, 00825729 |
| Single Drum Roller | BW 177 PDH-5 PL | 00827075 |
| Single Drum Roller | BW 177 DH-5 PL | 00827077, 00827377 |
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.
