BOMAG Vibration Damper Overview
BOMAG BW series compactors use rubber vibration dampers at multiple locations to manage the energy generated by the drum exciter system. Unlike cab mounts which isolate the operator cab, vibration dampers control the transmission of vibration energy within the compactor frame, protecting structural components and sub-systems from fatigue damage caused by continuous high-amplitude drum oscillation.
BOMAG part numbers beginning with 3115 and 3128 cover both cab mounts and vibration dampers, differentiated by the subsequent digits. Understanding which series applies to which function is essential for correct maintenance.
3115 Series Vibration Dampers
The 3115 series covers BOMAG vibration damper elements used primarily at the exciter system and drum assembly isolation points:
- 3115 1926 02: Vibration damper rubber element for the BOMAG drum/exciter assembly. This part manages damping within the vibrating drum assembly where frequencies are highest (typically 40–70 Hz at full exciter speed).
- 3115 2472 00: Anti-vibration mount providing broadband isolation between the vibrating drum assembly and the compactor frame. This is the primary vibration isolator in the BOMAG vibration management system.
- 3115 9150 99: Rubber buffer element for travel limit and frame impact applications (not a vibration damper, but same 3115 series prefix).
- 3115 1822 00 and 3115 1822 01: Cab mount rubber buffers (cab isolation, not vibration dampers).
3128 Series Parts
The 3128 series primarily covers BOMAG cab mount components:
- 3128 0458 series: Cab mount rubber elements in three Shore A hardness grades — 15, 18, and 24
- 3128047510: Rubber isolator for secondary vibration transmission paths (instrument consoles, brackets)
- 3128259405: Complete cab mount assembly
When to Replace BOMAG Vibration Dampers
Unlike cab mounts, vibration dampers are often not visually inspectable without disassembly. Performance indicators that suggest damper replacement is needed:
- Increased frame vibration measured at the machine frame (compare against baseline from new machine)
- Unusual noise from the drum area at operating frequency — may indicate damper stiffness loss
- BOMAG frame cracks near drum mount points — sign of vibration isolation failure allowing excess force transmission
- Mileage-based: BOMAG typically recommends vibration damper inspection at major service intervals (2,000–3,000 hours)
Proactive Replacement: For high-utilization US construction fleets where BOMAG compactors work 2,000+ hours per year, replacing vibration dampers as part of a planned annual or bi-annual maintenance program is more cost-effective than reactive replacement after frame damage occurs.
Ordering BOMAG Vibration Dampers
When ordering BOMAG vibration dampers, provide:
- BOMAG machine model (e.g., BW 177 D-5, BW 211 D-5)
- Machine serial number (helps confirm correct part specification for the production date)
- Part number from the BOMAG spare parts manual if available
- Quantity required (typically replaced in sets of 2 or 4)
Contact our technical team with this information for a fast quote on BOMAG 3115 series vibration dampers.