The Bomag 78240210 Drive Disc is a genuine OEM component designed for Bomag BW 100 and BW 120 series tandem rollers, including the BW 125 AC-4 and BW 125 AD-4. Sourced directly through Bomag's authorized parts network, this drive disc meets the exact tolerances and material specifications of the original component. This part is a direct-fit replacement, confirmed across a wide range of -3, -4, and -5 generation tandem rollers including the BW 100 AD-5, BW 120 AD-5, BW 120 SL-5, BW 120 ADe-5, and BW 120 AD-5 CC, among others.
Key Features
- Genuine OEM Drivetrain Integrity — manufactured to Bomag's original material and dimensional specifications for the drive disc, ensuring consistent torque transfer and wear characteristics matching the original design
- Direct Replacement Fit — installs in place of the original drive disc without modification, maintaining correct engagement geometry within the drivetrain assembly
- Broad Tandem Roller Coverage — confirmed fitment across BW 100 and BW 120 series tandem rollers spanning -3, -4, and -5 generations, including BW 100 AC-3, BW 120 AD-4, BW 120 SL-5, BW 120 ADe-5, BW 120 AD-5 CC, and more
- Sustained Power Transmission — a correctly functioning drive disc maintains smooth, consistent drum drive engagement; a worn or damaged disc can cause slippage, uneven compaction, and accelerated wear on surrounding drivetrain components
- Verified Part Number — ordering by part number 78240210 confirms you receive the correct Bomag-specified component for your machine's generation and configuration
The drive disc is a critical component in the tandem roller's drivetrain, responsible for transferring rotational force from the drive system to the drum or transmission assembly. It acts as a mechanical interface that must maintain precise contact and friction characteristics to deliver consistent drum rotation and compaction output. When a drive disc wears, warps, or fails, the result is slippage or inconsistent drum speed — directly compromising compaction quality and placing additional stress on adjacent drivetrain components.
Part Details
| Part Number | 78240210 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Drive Disc |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Tandem Roller | BW 100 AC-3 | 00817457 |
| Tandem Roller | BW 100 AD-3 | 00817458 |
| Tandem Roller | BW 120 AC-3 | 00817462 |
| Tandem Roller | BW 120 AD-3 | 00817463, 00817831, 00817833 |
| Tandem Roller | BW120AD 3 | 00817571 |
| Tandem Roller | BW 100 AD-4 | 00817685, 00818465, 00824271, 00824273 |
| Tandem Roller | BW 100 AC-4 | 00817687, 00818467, 00818731 |
| Tandem Roller | BW 120 AD-4 | 00817689, 00818377, 00818469, 00818477, 00818593, 00818733, 00824173 |
| Tandem Roller | BW 120 AC-4 | 00817691, 00818471, 00818597 |
| Tandem Roller | BW120 AD-3 | 00817849 |
| Tandem Roller | BW 125 AD-4 | 00817937, 00818473 |
| Tandem Roller | BW 125 AC-4 | 00818271, 00818475 |
| Tandem Roller | BW120AD 4 | 00818595, 00818871 |
| Tandem Roller | BW 100 AD-5 | 00824029, 00824561, 00824617, 00824833, 00824995, 00825357, 00825373, 00825565, 00825643, 00826215, 00826219, 00827043 |
| Tandem Roller | BW 120 AC-5 | 00824031, 00824619, 00824839, 00825363, 00825571, 00826093, 00827049 |
| Tandem Roller | BW 120 AD-5 | 00824033, 00824563, 00824615, 00824835, 00824997, 00825359, 00825567, 00825645, 00826049, 00826217, 00826221, 00826639, 00826689, 00827045 |
| Tandem Roller | BW 100 AC-5 | 00824275, 00824621, 00824837, 00825361, 00825569, 00826091, 00827047 |
| Tandem Roller | BW 120 SL-5 | 00824537, 00824559, 00825001, 00825615, 00827055 |
| Tandem Roller | BW 100 SL-5 | 00824557, 00824999, 00826553 |
| Tandem Roller | BW 120 SLC-5 | 00826435 |
| Tandem Roller | BW 120SL-5 | 00826609 |
| Tandem Roller | BW 100 ADe-5 | 00826733 |
| Tandem Roller | BW 120 ADe-5 | 00826735 |
| Tandem Roller | BW 120 AD-5 CC | 00826793 |
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.
