ZX200-3 EX200-2 4452112 4642911 HPV102 Hydraulic Pump Housing Casing Spare Parts Compatible with Hitachi

1. Product Overview & Wholesale Price Range

The Hitachi HPV102 / HPV0102 Hydraulic Main Pump Housing Casing (OEM Part # 4452112 / 4642911 / 9152754 / HPV102) is a high-density ductile iron pump body casting precision-machined with swashplate cradle pivot seats, bearing bores, and high-pressure oil galleries designed for 20-ton excavators undergoing hydraulic pump overhauls.

• Factory Wholesale Price: $350 – $780 USD (Direct manufacturer pricing — Save up to 50% vs regional dealer markups)
• Material Specifications: High-tensile nodular cast iron (QT500-7) with high thermal fatigue and pressure shock resistance
• MOQ & Bulk Discount: 1 Unit (Tiered wholesale discounts available for hydraulic repair shop batch orders)
• Lead Time: 1–3 business days (Large factory stock ready for immediate worldwide dispatch)
• Warranty: 12 Months full replacement warranty against casting defects and pressure cracks

2. Application Worksite Checklist (施工场景清单)

Heavy-duty reinforced casting walls engineered to maintain zero housing distortion under continuous 350 Bar working pressure:

• Heavy Open-Pit Quarrying & Mining: Thick-walled pump casing absorbs extreme continuous hydraulic pressure spikes during rock loading with Hitachi ZX200-3 excavators.
• Deep Foundation Excavation & Earthmoving: Precision CNC-machined bearing bores ensure exact alignment under high radial shaft loads.
• Highway Infrastructure & Utility Trenching: Heat-treated casting material prevents thermal expansion warpage during long-hour continuous operations.
• Demolition & Heavy Breaker Operations: High-tensile ductile iron prevents stress cracking caused by intense hydraulic hammer vibration feedback.

3. Hydraulic Pump Housing Troubleshooting & Diagnostic Guide (泵壳配件常见故障排查)

If your HPV102 / HPV0102 hydraulic main pump casing is exhibiting damage during overhaul, check the symptoms below:

• Fault 1: Pump Casing Stress Cracking & External High-Pressure Oil Leakage (泵壳疲劳开裂/高压渗油)
  Root Cause: Long-term hydraulic pressure spikes exceeding 400 Bar or casting fatigue around high-pressure oil gallery walls.
  Solution: Replace with a new reinforced ductile iron HPV102 pump housing (OEM 4452112) for permanent leak-free operation.
• Fault 2: Swashplate Cradle Pivot Seat Friction Scoring & Wear (斜盘支撑座磨损拉沟)
  Root Cause: Contaminated hydraulic fluid or dry friction galling between the swashplate cradle and housing pivot seat.
  Solution: Replace damaged pump casing with our CNC micro-finished HPV102 housing body.
• Fault 3: Drive Shaft Bearing Bore Internal Distortion & Excessive Play (轴承孔磨损变形/游隙过大)
  Root Cause: Heavy radial shaft vibration or bearing roller collapse damaging the housing bearing seat.
  Solution: Install a new factory-standard HPV102 pump body with precision-toleranced bearing bores.
• Fault 4: Stripped Threaded Holes for Regulator / Head Flange Bolts (固定螺纹孔拉丝滑丝)
  Root Cause: Over-torquing during previous pump rebuilds or fatigue vibration from hydraulic breakers.
  Solution: Replace with a new HPV102 pump housing featuring deep-cut reinforced thread holes.

4. Hot Machinery Replacement Parts Recommendation (5大品类热门推荐表)

Explore our factory-direct replacement hydraulic components compatible with major global excavator brands:

5. Frequently Asked Questions & Technical Support (QA 问答专区)

Q1: How do I verify if this HPV102 / HPV0102 pump housing fits my Hitachi ZX200-3 main pump?
A: Check your original pump nameplate for OEM part numbers 4452112, 4642911, or HPV102 stamp. You can also send us clear photos of your old pump housing for instant fitment verification.

Q2: What casting material and hardness spec is used for this HPV102 pump housing?
A: Our HPV102 pump housings are cast using high-strength nodular iron (QT500-7) with high thermal shock resistance and high pressure tolerance up to 380 Bar.

Q3: Are all swashplate cradle pivot seats and bearing bores pre-machined and ready for immediate assembly?
A: Yes, every HPV102 pump housing undergoes 100% CNC precision machining and quality inspection to ensure exact factory clearance tolerances for immediate rebuilds.