Product Overview — Part 3128 0458 18
The 3128 0458 18 is a precision-manufactured BOMAG Cab Mounts component. The 3128 0458 18 medium-hardness (18 Shore A) BOMAG cab mount is the most versatile and commonly specified variant for general-purpose BOMAG compactor operation. The 18 Shore A compound provides a balanced compromise between vibration isolation efficiency and lateral cab stability. This mount is typically the factory-installed specification for BOMAG BW series compactors used in both soil compaction (lower frequency, higher amplitude) and asphalt compaction (higher frequency, lower amplitude) applications. The medium hardness accommodates both use cases without the performance trade-offs of the extreme variants. Shore A comparison: - 15 Shore A: Softest — best isolation, maximum cab movement - **18 Shore A: Medium — factory standard, best all-round** - 24 Shore A: Firmest — least isolation, most stable cab For BOMAG service, all three variants have identical external dimensions. Select based on the operator vibration measurement data from your specific machine if available, or use 18 Shore A as the factory default. See also 3128259405 complete cab mount assembly.
Technical Specifications
| Property | Value | Standard |
|---|---|---|
| Part Number | 3128 0458 18 | 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 177, BW 202, BW 211, BW 226, BW 256, BW 266, BW 300 series compactors — general purpose soil and asphalt compaction.
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 3128 0458 18. 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.