The Bomag 05802104 Outer Disc is a genuine OEM component designed for the BW 124 D single drum roller and BW 120 AD, BW 125 ACH, and BW 135 AC tandem rollers. As a direct OEM replacement, this outer disc is manufactured to the same specifications as the original, ensuring a correct, consistent fit within the drum drive or brake pack assembly. Sourced directly from Bomag, part number 05802104 carries the full backing of the OEM supply chain, so you can order with confidence that this part matches your machine's original design. Confirmed fitment across both single drum and tandem roller variants means less time cross-referencing and more time keeping your compaction equipment productive.
Key Features
- OEM Disc Material and Tolerancing — manufactured to Bomag's original dimensional and material specifications, delivering the correct friction characteristics and wear resistance expected of a disc in a multi-plate assembly
- Drop-In Replacement Fit — this outer disc seats directly into the drum drive or brake pack without modification, matching the original spline engagement and stack dimensions
- Broad Roller Compatibility — fits the BW 124 D single drum roller and BW 120 AD, BW 125 ACH, and BW 135 AC tandem rollers, covering both single drum and tandem compaction equipment in this series
- Consistent Clamping Force — a properly dimensioned outer disc maintains even pressure distribution across the disc pack, preserving smooth power transfer and preventing premature wear on adjacent components
- Braking System Integrity — in brake pack applications, a worn or out-of-spec outer disc can compromise braking response; replacing with a genuine OEM disc restores designed clamping force and operator safety on grade
The outer disc is a friction and clamping component within a multi-plate disc pack, typically found in drum drive assemblies or integrated braking systems on vibratory rollers. It works in conjunction with inner discs and a piston to transmit torque or generate braking force through controlled friction engagement. When an outer disc wears thin, warps, or loses its surface integrity, the result is slipping under load, uneven braking, or accelerated wear on the surrounding disc pack — all of which can lead to loss of drive or braking capability on the roller.
Part Details
| Part Number | 05802104 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Outer Disc |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Single Drum Roller | BW 124 D | 00810079 |
| Tandem Roller | BW 120 AD | 00810146 |
| Tandem Roller | BW 125 ACH | 00817466 |
| Tandem Roller | BW 135 AC | 00817470 |
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.
