Product Overview — Part 56D-50-12314
The 56D-50-12314 is a precision-manufactured Cab Mounts component. Part 56D-50-12314 is a Komatsu cab suspension pad providing compliance at cab attachment interfaces on D-series and WA-series equipment. Unlike traditional cylindrical rubber mounts, this pad configuration provides primarily vertical load support with controlled lateral compliance. The pad geometry allows natural rubber to deform in shear under horizontal loads while providing compression stiffness for vertical load support. This combination makes suspension pads particularly effective for large machines where vertical static deflection must be minimized while lateral flexibility reduces cab sway. Komatsu cab suspension pads are typically replaced in sets — replacing individual pads can cause uneven cab height and unequal load distribution on remaining mounts. Contact our technical team for set pricing and to confirm the correct quantity for your Komatsu model. See related Komatsu parts 56B-50-12315 and 195-54-78410.
Technical Specifications
| Property | Value | Standard |
|---|---|---|
| Part Number | 56D-50-12314 | 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
Komatsu D-series bulldozer cab pads; Komatsu WA series wheel loader cab suspension; Komatsu GD motor grader cab mounting.
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 56D-50-12314. 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.