Engine derating during deep digging? The Hydraulic Fan Motor GP (7087S00820) maintains critical cooling for Komatsu PC1250 Mining Excavators in 45°C+ conditions. Our OEM-spec solution delivers:
✅ 52°C ambient temperature tolerance
✅ 3,200 RPM ±1% speed stability
✅ ISO 12103-1 Dust Certification
Catastrophic Failure Symptoms:
• Engine temp >108°C at full load
• Hydraulic oil oxidation (ΔT>15°C)
• Coolant boiling in expansion tank
• Frequent ECO mode activation
• Error Codes E450/E551/E552
Technical Specifications:
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Part Numbers: 7087S00820, 708-7S-00820, GP-7087S00820
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Type: Axial-piston hydraulic motor
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Torque Output: 210 Nm @ 180 bar
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Flow Range: 55-62 L/min
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Compatible Models:
› PC1250-1 (SN: 5001-5999)
› PC1250-3 (SN: 7001-7999)
› PC1250-6 (SN: A5001-A5999)
› PC1250-7 (SN: B5001-B5999)
› PC1250-8 (SN: C5001-C5999)
› PC1250-10 (SN: D5001-D5999)
› PC1250-11 (SN: E5001-E5999)
Engineering Innovations:
▶ Ceramic composite bearings – 25,000hr MTBF
▶ Quad-labyrinth seal system – IP69K certified
▶ Dynamic rotor balancing – <0.2g vibration
▶ Thermal-conductive housing (0.8 W/m·K)
Mine Validation:
“7087S00820 motors maintained 89°C engine temp in PC1250-8s during 72h continuous operation at 2,800m altitude” – Komatsu MineOps Report #MTR-1125
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