Bomag Belleville Spring | Part 05815146

The Bomag 05815146 Belleville Spring is a genuine OEM component designed for Bomag tandem rollers across multiple generations and configurations. Sourced directly from Bomag, this spring meets the exact tolerances required for proper clamping force and spring deflection in the machine's mechanical systems. This Belleville Spring is confirmed to fit models including the BW 120 AC-3, BW 120 AC-4, BW 120 AC-5, BW 138 AC-5, BW 138 AD-5, BW 100 AC-5, BW 115 AC-5, BW 90 AC-5, BW 131 ACW-5, and the full range of compatible tandem rollers listed below. Ordering by part number 05815146 ensures you receive the correct spring geometry and load rating for a true drop-in replacement.

Key Features

• OEM Clamping Force Accuracy — manufactured to Bomag's specified deflection curve and load rating, ensuring the spring delivers the precise axial force required for correct mechanical engagement in tandem roller assemblies
• Direct-Fit Installation — matches the original bore diameter, outer diameter, and cone angle of the factory spring, fitting into the existing stack without shimming or modification
• Broad Tandem Roller Coverage — fits an extensive range of Bomag tandem rollers including BW 80 ADS, BW 90 AC-2, BW 90 AC-5, BW 100 AC-4, BW 100 AC-5, BW 100 ACM-5, BW 100 SCC-5, BW 115 AC-3, BW 115 AC-5, BW 115 AD-3, BW 120 AC-3, BW 120 AC-4, BW 120 AC-5, BW 120 SLC-5, BW 125 AC-4, BW 131 ACW-2, BW 131 ACW-3, BW 131 ACW-5, BW 135 AD-5, BW 138 AC-5, and BW 138 AD-5
• Sustained Spring Tension — a correctly functioning Belleville spring maintains consistent clamping or preload force over repeated load cycles; a fatigued or cracked spring leads to inconsistent engagement, mechanical slack, and accelerated wear on adjacent components
• Genuine OEM Assurance — supplied as an authentic Bomag part under part number 05815146, backed by Bomag's OEM quality standards for material grade and heat treatment

A Belleville spring — also known as a conical disc spring or washer spring — is a precision-formed conical disk that generates a high axial load over a very short deflection distance. In compaction equipment like Bomag tandem rollers, Belleville springs are commonly used in clutch packs, brake assemblies, and bearing preload arrangements where a controlled, consistent spring force must be maintained within a compact axial space. When a Belleville spring fatigues, cracks, or loses its cone height due to repeated compression, the clamping or preload force drops off, which can result in slipping, improper brake engagement, or premature bearing wear — making timely replacement with a correctly rated spring essential to keeping the drivetrain and braking systems functioning as intended.

Part Details

Compatibility & Fitment

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.