Product Overview — Part 3128259405
The 3128259405 is a precision-manufactured BOMAG Cab Mounts component. The 3128259405 is a complete BOMAG cab mount assembly for BW series compactors, supplied as a ready-to-install unit including the rubber isolation element, upper and lower metal components, and associated hardware. This assembly format eliminates the need to source and assemble individual components, reducing maintenance time and error risk. BOMAG cab mount assemblies must be replaced as complete units because the rubber-to-metal bond and dimensional relationship between components is critical for correct cab height and mount pre-load. Replacing only the rubber element without the metal components may result in incorrect cab geometry. The assembly is available in multiple rubber hardness variants corresponding to the 3128 0458 15 (soft), 3128 0458 18 (medium), and 3128 0458 24 (firm) specifications. Specify the required Shore A hardness when ordering. Consult our technical team with BOMAG model and serial number for hardness confirmation.
Technical Specifications
| Property | Value | Standard |
|---|---|---|
| Part Number | 3128259405 | OEM Specification |
| Hardness | 45–70 Shore A (application specific) | ISO 48-4 / ASTM D2240 |
| Tensile Strength | ≥ 16 MPa | ISO 37 / ASTM D412 |
| Elongation at Break | ≥ 300% | ISO 37 / ASTM D412 |
| Compression Set | ≤ 25% (22h/70°C) | ISO 815-1 / ASTM D395 |
| Temperature Range | −40°C to +90°C | Operational limits |
| Ozone Resistance | No cracking 168h | ISO 1431-1 |
| Fire Safety | EN 45545-2 HL2/HL3 available | EN 45545-2:2013 |
| Fatigue Life | > 1,000,000 cycles | Dynamic fatigue protocol |
Applications
BOMAG BW series compactors requiring complete cab mount assembly replacement; BOMAG BW 177 through BW 300 series; complete cab mount maintenance kits.
Our technical team can assess suitability for other equipment types. Contact us with the make, model, and serial number for a precise cross-reference confirmation.
Material & Quality Standards
- Base Polymer: Natural Rubber (NR) or NR/SBR blend — excellent resilience and fatigue resistance
- Reinforcing Fillers: High-structure carbon black for controlled stiffness and wear resistance
- Protection Additives: Anti-ozonant wax and chemical antioxidant for extended outdoor service life
- Bonding System: Chemically bonded rubber-to-metal interface exceeding bulk rubber strength
- EN 45545-2 Option: Halogen-free flame retardant meeting smoke toxicity requirements (on request)
Every batch produced under ISO 9001:2015 QMS with full material traceability. Certificate of Conformance and material test reports available upon request.
Installation Guidelines
- Inspect on arrival: Verify part number 3128259405. Check for transit damage — reject any non-conforming component.
- Clean mating surfaces: Remove all rust, old rubber fragments, grease, and paint before installation.
- Align correctly: Follow assembly drawing orientation. Incorrect orientation may cause premature failure.
- Torque fasteners: Use calibrated torque wrench and cross-pattern tightening sequence per OEM specification.
- Post-install check: Inspect for correct seating. Run equipment at low speed to verify no abnormal noise or vibration.