Poclain MHP13/17-999-0 Series Motor Spare Parts

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

3 year

Product details

Poclain MHP13/17-999-0 Series Motor Spare Parts Guide

(Optimized for High-Load Applications: HDD Rigs, Agricultural Vehicle Drives, etc.)

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1. Core Components & Fault Warning Signals

(Ranked by Wear Priority, Including Failure Symptoms & Solutions)

【表格】

Component Critical Function Failure Symptoms Root Causes Solutions

Piston Group Core of hydraulic-to-mechanical energy conversion Output torque drops >20%; oil temperature rises abnormally Piston/cylinder bore wear (clearance >0.03mm) Replace with high-chromium-plated piston group (wear resistance increased 3x)

Valve Plate Flow distribution & pressure balancing Hydraulic pump emits abnormal noise; pressure fluctuation exceeds ±15% Valve plate surface burning/seal band wear Repair using laser cladding technology (hardness HRC62)

Drive Shaft Bearing Withstands combined radial/axial loads Vibration >12mm/s; bearing temperature rise ≥50°C Grease degradation/overload impact Upgrade to SKF CARB cylindrical roller bearing (50% higher impact resistance)

Seal Kit Prevents hydraulic oil leakage Leakage >5 drops/min; oil emulsification O-ring aging/seal lip damage Upgrade to PTFE+FKM composite seal (temperature resistance -40~+200°C)

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2. Key Parameter Comparison (MHP13 vs. MHP17)

(Facilitates Precise Selection to Avoid Overloading or Inefficiency)

【表格】

Parameter MHP13-999-0 MHP17-999-0 Application Differences

Displacement (cc/rev) 13.2 (±5%) 17.5 (±5%) MHP13 suits small/medium-sized agricultural machinery; MHP17 suits heavy-duty HDD rigs

Rated Pressure (bar) 280 (continuous)/315 (intermittent) 320 (continuous)/350 (intermittent) MHP17 offers stronger impact resistance (+35% peak torque)

Allowable Speed (rpm) 0~300 (electro-hydraulic proportional control) 0~280 (electro-hydraulic proportional control) MHP13 excels in high-speed performance (efficiency drop <5%)

Weight (kg) 42 (with housing) 51 (with housing) MHP17 has 12% longer axial dimension; requires optimized installation space

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3. Typical Fault Cases & Solutions

(Based on 500+ Global Cases, Providing Replicable Repair Paths)

Case 1: Sudden Torque Drop in HDD Rig

• Symptom: Torque drops from 900Nm to 650Nm at 15m drilling depth

• Diagnosis: Piston group wear causes internal leakage (oil analysis shows iron content 12x higher)

• Repair: Replace withPoclain OEM nickel-plated piston group+ high-pressure valve block flushing (cost reduced by 40%)

Case 2: Oil Leakage in Agricultural Vehicle Drive

• Symptom: Leakage reaches 200ml/h after 8 hours of continuous operation

• Diagnosis: Seal lip embedded with straw fibers (NAS 1638 cleanliness exceeds Class 22)

• Repair: Upgrade todouble-lip dust seal+ install pre-filter (filtration accuracy improved to 5μm)

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

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3 year

Main Product: hydraulic motor, gear box, hydraulic pump, hydraulic valve , hydraulic winch, hydraulic system

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