207-54-71341 Komatsu Rubber Engine Mount — PC300 & PC350 Excavator Platform
OEM-Equivalent • ISO 9001:2015 Certified • Komatsu PC300-7 • In Stock
Product Overview
The 207-54-71341 is a heavy-duty rubber engine mount designed for Komatsu PC300 and PC350 class hydraulic excavators in the 30-35 tonne range. These larger machines are powered by SAA6D114E and SAA6D125E engines producing 240-270 HP, generating substantially more vibration energy than the smaller PC200-class machines.
The 207-54-71341 mount is engineered with a higher load rating and stiffer compound compared to the 20Y-54-39520 used on the lighter PC200 platform. The increased engine mass of the PC300/PC350 demands greater static load support, while the higher horsepower output generates larger dynamic forces that the mount must absorb without excessive deflection.
PC300 and PC350 excavators are workhorses of the quarrying, mass excavation, and heavy demolition industries. They operate at aggressive duty cycles with frequent boom movements, high slew speeds, and sustained hydraulic loads. The 207-54-71341 is formulated for this demanding service profile with enhanced fatigue resistance and thermal stability.
Technical Specifications
| Property | Specification |
|---|---|
| Part Number | 207-54-71341 |
| OEM Brand | Komatsu |
| Type | Rubber Engine Mount / Anti-Vibration Mount |
| Compatible Equipment | Komatsu PC300-7, PC300-8, PC300LC-8, PC350-7, PC350-8, PC350LC-8 |
| Cross-Reference | 17A-54-46120 (related mount) |
| Material | Natural Rubber (NR) Compound |
| Hardness | 60 ± 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 PC300-7, PC300-8 — 30-tonne class hydraulic excavator
- Komatsu PC300LC-8 — 30-tonne long-carriage variant
- Komatsu PC350-7, PC350-8 — 35-tonne large excavator
- Komatsu PC350LC-8 — 35-tonne long-reach configuration
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 5,000 to 10,000 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 | 60 ± 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 207-54-71341 has an expected service life of 5,000 to 10,000 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.