中文
Welcome to Guangzhou HanRui Hydraulic Co., Ltd. We specialize in providing the complete HPV0102 / HPV102 excavator hydraulic main pump housing / pump casing, precision-manufactured as a heavy-duty aftermarket replacement part compatible with Hitachi, Linde, and John Deere engineering machinery equipment. Engineered from high-strength ductile cast iron, our pump bodies ensure exact internal alignment and high fatigue resistance under extreme hydraulic working pressures.
Heavy-Duty Application & Working Scenarios
Engineered to withstand continuous high pressure and severe mechanical strain during heavy excavation:
- Quarry Mining & Hard Earthwork: Rigid casting structure prevents casing flex and cracking during 350 Bar peak hydraulic pressure spikes.
- High-Temperature Continuous Operation: Dense iron metallurgy prevents heat distortion and preserves inner bore concentricity under 90°C+ oil heat.
- Hydraulic Breaker Hammering: Reinforced wall thickness absorbs violent shock impulses generated by heavy demolition hydraulic breakers.
- Main Pump Overhaul & Remanufacturing: Precision-milled mounting faces serve as an ideal base for rebuilding worn HPV0102 piston pumps.
HPV0102 Hydraulic Pump Housing Fault Diagnosis & Troubleshooting
Experiencing main pump failure due to casing damage? Over 90% of field repair inquiries involve these pump body issues. Here is how our HPV0102 Hydraulic Pump Housing resolves them:
1. Pump Casing Cracks & High-Pressure Oil Leakage (泵壳开裂 / 高压漏油)
Symptom: Fine hairline cracks or high-pressure oil spraying from the main pump body under heavy loading.
Cause: Metal fatigue caused by prolonged hydraulic pressure spikes or low-grade cast iron porosity.
Solution: High-tensile ductile iron casting with reinforced wall thickness prevents casing fractures under extreme pressure.
2. Bearing Seat Bore Wear & Shaft Misalignment (轴承孔磨损 / 轴心偏心)
Symptom: Rapid bearing destruction, drive shaft play, and loud grinding noises during pump rotation.
Cause: Ovality wear inside the housing bearing seat from heavy radial swashplate loads.
Solution: CNC precision-bored bearing seats ensure perfect concentricity and long bearing service life.
3. Inner Cavitation Scoring & Internal Pressure Drop (内腔拉伤 / 掉压)
Symptom: Loss of hydraulic digging power and slow cylinder speeds when oil reaches operating temperature.
Cause: Cavitation erosion or metal debris scoring on inner housing passages, causing internal fluid bypass.
Solution: Smoothly milled internal fluid channels reduce turbulence and eliminate pressure leakage paths.
4. Shaft Seal Groove Erosion & Seal Blowout (密封槽蚀损 / 冲毁油封)
Symptom: Frequent blowout of front shaft oil seals, causing continuous oil leakage into the engine flywheel housing.
Cause: Corrosion or deformation of the front seal groove in the housing under high case drain backpressure.
Solution: Precision seal channel machining ensures tight seal lip retention and prevents pressure blowout.
5. Casing Overheating & Thermal Distortion (壳体变形 / 发热)
Symptom: Pump housing temperature spikes rapidly, leading to stuck internal piston swashplates.
Cause: Inferior heat dissipation characteristics of low-grade cast iron casings.
Solution: Optimized thermal cooling fin geometry promotes rapid heat dissipation and preserves internal tolerances.
Hot Popular Excavator Hydraulic Main Pumps & Spare Parts Catalog
Explore our factory-direct aftermarket catalog for major construction equipment brands:
| Machine Model (型号) | Part Number (零件号) | Component Name (品名) | Compatible Brand (适配品牌) | Target Fault Solved |
|---|---|---|---|---|
| EX200-2 / EX200-5 / ZX200 | HPV0102 / HPV102 Housing | Hydraulic Pump Casing / Body | Compatible with Hitachi / Linde | Fixes Casing Cracks & Bearing Seat Wear |
| Cat 336GC / 336E | 509-5142 / K5V160DTP | Hydraulic Main Pump Assembly | Compatible with Cater.pillar | Fixes Engine Stalling & Low Digging Pressure |
| SK330-8 / SK350-8 | LQ10V00018F1 / K3V180DT | Main Hydraulic Pump Assembly | Compatible with Kobelco | Fixes Pressure Instability & Oil Bypass Leakage |
| PC300-8 / PC350-8 | 708-2G-00020 / HPV160 | Hydraulic Main Piston Pump | Compatible with Komatsu | Fixes Slow Movement & Pump Noise |
| EC210B / EC240B | 14531223 / K3V112DT | Main Hydraulic Pump Assembly | Compatible with Volvo | Fixes Boom Hesitation & Shaft Oil Leakage |
Frequently Asked Questions (Troubleshooting & Fitment)
Q: What is the factory direct price for an HPV0102 hydraulic pump housing?
A: Direct from our Guangzhou factory, the wholesale price range for an HPV0102 / HPV102 Hydraulic Pump Housing (Casing) is $250.00 – $680.00 USD per piece, depending on order quantity and specific casting configuration. Purchasing directly from us saves 30% to 50% compared to local distributor prices.
Q: Which excavator models use the HPV0102 / HPV102 main pump housing?
A: The HPV0102 / HPV102 main pump housing is widely compatible with 20-ton Hitachi excavators, including Hitachi EX200-2, EX200-3, EX200-5, ZX200, ZX210, and John Deere 200LC excavators equipped with Linde/Hitachi series piston pumps.
Q: Can a cracked excavator hydraulic pump housing be repaired by welding?
A: Welding a cracked hydraulic pump casing is not recommended. Hydraulic pumps operate under high cyclic pressures (300-350 Bar), and welded cast iron frequently fractures again under stress, leading to catastrophic internal pump failure. Replacing the damaged body with a new HPV0102 pump housing ensures long-term reliability.
