Product Overview — Part 55017281
The 55017281 is a precision-manufactured Cab Mounts component. Part 55017281 is an OEM-specification cab mount for Case and CNH (CNH Industrial) construction equipment. This component is specified for Case CX and CX B series excavators where the cab mount provides the critical anti-vibration isolation between the excavator upper frame and the operator cab. The Case/CNH cab mount uses a compound formulated to Case's original specification, matching hardness (Shore A) and dynamic stiffness to the OEM values. Dimensional compatibility is verified against Case engineering drawings. The bonded metal inserts use Case's specified surface treatment for corrosion protection in outdoor construction site environments. For customers operating mixed fleets including BOMAG and Case equipment, our cross-reference database includes dimensional comparisons between Case cab mounts and BOMAG 3128 0458 series. Related Case/CNH cab mounts include 55154977 and 55159454.
Technical Specifications
| Property | Value | Standard |
|---|---|---|
| Part Number | 55017281 | 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
Case CX series excavators; CNH construction equipment cab mounts; Case wheel loader cab isolation; New Holland excavator cab mounts.
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 55017281. 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.