6151-12-1100 Komatsu Engine Cushion — D65EX & D65PX Dozer Series
OEM-Equivalent • ISO 9001:2015 Certified • Komatsu D65EX-15 • In Stock
Product Overview
The 6151-12-1100 is a rubber engine mounting component for the Komatsu D65EX and D65PX series mid-size crawler dozers. The D65 is Komatsu's most popular mid-range dozer, occupying the critical 20-tonne operating weight class that bridges the gap between compact dozers (D31-D51) and the large D155 platform.
The D65 series is powered by the SAA6D114E-3 engine producing 205 HP. The 6151-12-1100 mount provides vibration isolation between this powerplant and the dozer frame, protecting structural components and reducing operator vibration exposure. The D65 is widely used in site preparation, finish grading, landfill operations, and agricultural land clearing — applications that demand all-day operator comfort.
As a complement to the 8A31-54-1110 cushion damper (which also fits D65EX/PX machines), the 6151-12-1100 serves a different mounting position in the D65's engine isolation system. Consult your Komatsu parts book to determine the complete mount set for your specific serial number.
Technical Specifications
| Property | Specification |
|---|---|
| Part Number | 6151-12-1100 |
| OEM Brand | Komatsu |
| Type | Rubber Engine Mount / Anti-Vibration Cushion |
| Compatible Equipment | Komatsu D65EX-15, D65EX-16, D65EX-17, D65PX-15, D65PX-16, D65PX-17, D65WX-15 |
| Cross-Reference | 8A31-54-1110 (related cushion) |
| Material | Natural Rubber (NR) Compound |
| Hardness | 55 ± 5 Shore A (ISO 48-4) |
| Tensile Strength | ≥ 12 MPa (ISO 37) |
| Elongation at Break | ≥ 350% |
| Temperature Range | −40°C to +90°C |
| Compression Set | ≤ 25% (ISO 815-1) |
| Quality | ISO 9001:2015 Certified |
| Availability | In Stock — Ships Worldwide |
Compatible Komatsu Equipment
- Komatsu D65EX-15, D65EX-16, D65EX-17 — 20-tonne mid-size crawler dozer
- Komatsu D65PX-15, D65PX-16, D65PX-17 — LGP (low ground pressure) variant
- Komatsu D65WX-15 — wide-track variant for soft soil conditions
Always verify your machine model and serial number before ordering. Contact us for free cross-reference verification.
Key Features & Benefits
OEM-Equivalent Quality
Manufactured to Komatsu's original engineering specifications with ±0.5 mm dimensional tolerance. Direct bolt-on replacement with no modifications required. Metal components zinc-plated for corrosion resistance.
Extreme Temperature Range
Operational from −40°C to +90°C, covering Arctic mining to tropical construction sites. IPPD/TMQ antioxidant system prevents thermal degradation. Anti-ozonant wax migration protects surface integrity.
Extended Service Life
Engineered for 4,000 to 8,000 operating hours under standard duty cycles. HAF carbon black reinforcement provides exceptional fatigue crack resistance through millions of load cycles.
Global Express Shipping
In stock and ships worldwide in 3–5 business days via DHL, FedEx, or UPS. Full commercial documentation included for seamless customs clearance in all major markets.
Performance Specifications
| Property | Specification | Test Method |
|---|---|---|
| Hardness | 55 ± 5 Shore A | ISO 48-4 |
| Tensile Strength | ≥ 12 MPa | ISO 37 |
| Elongation at Break | ≥ 350% | ISO 37 |
| Compression Set (24h @ 70°C) | ≤ 25% | ISO 815-1 |
| Tear Strength | ≥ 25 kN/m | ISO 34-1 |
| Accelerated Aging (72h @ 100°C) | Hardness change ≤ 8 IRHD | ISO 188 |
| Ozone Resistance (200 pphm, 48h) | No cracks at 20% strain | ISO 1431-1 |
| Operating Temperature | −40°C to +90°C | Continuous |
Maintenance & Expected Lifespan
Under standard operating conditions, the 6151-12-1100 has an expected service life of 4,000 to 8,000 operating hours. In severe duty applications (24/7 mining, extreme temperatures, high dust), service life may be reduced. Inspect at every major service interval (2,000 hours) for surface cracking, compression set, oil contamination, and mounting hardware integrity.
Replacement criteria: Replace when surface cracks exceed 2 mm depth, compression set exceeds 30%, rubber shows oil swelling, or the operator reports increased vibration. Always replace all mounts simultaneously for optimal isolation performance.
