The Bomag 05818012 Belleville Spring is a genuine OEM component designed for BW 1050 T, BW 850 T, BW 850 TR, and BW 85 T trench compactors. As a direct-from-BOMAG part, this Belleville spring meets the same engineering standards as the spring installed at the factory, ensuring correct load characteristics and dimensional fit. If you're servicing one of these trench compactors, matching part number 05818012 to your machine guarantees you're installing the right spring for the application.
Key Features
- Genuine OEM Load Consistency — manufactured to BOMAG's original spring-rate specification, so this Belleville spring delivers the precise clamping or preload force the assembly requires
- Direct Drop-In Replacement — machined to the same bore, outer diameter, and cone height as the original, fitting the spring stack without rework or shimming
- Broad Trench Compactor Coverage — fits BW 1050 T, BW 850 T, BW 850 TR, and BW 85 T trench compactors, covering multiple force classes in the BW T-series line
- Sustained Clamping Force — Belleville springs that have fatigued or taken a permanent set lose their preload, causing slippage, vibration irregularity, or premature wear on surrounding components; replacing with a fresh OEM spring restores correct assembly tension
- Verified Part Number Integrity — ordering by Bomag part number 05818012 eliminates guesswork and confirms you're sourcing the correct spring geometry for these machines
A Belleville spring — sometimes called a conical disc spring — is a washer-shaped spring with a dished profile that generates a high clamping or preload force across a very short deflection distance. In trench compactors like the BW T-series, Belleville springs are commonly used to maintain consistent pressure in clutch packs, drive couplings, or vibration system assemblies where compact axial space and high load capacity are both required. When a Belleville spring fatigues or fractures, the assembly it supports loses proper preload, which can lead to slippage, uneven compaction force, accelerated wear on mating parts, or unexpected mechanical failures in the field.
Part Details
| Part Number | 05818012 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Belleville Spring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Trench Compactor | BW 1050 T | 00815203, 00811653 |
| Trench Compactor | BW 850 T | 00811652 |
| Trench Compactor | BW 850 TR | 00815210 |
| Trench Compactor | BW 85 T | 00815204 |
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.
