日立 EX200-5 液压主泵 – 中国再制造（合肥组装：9150726 / 9152668）

विवरण

विवरण जानकारी

1. प्रमुख विशेषताएँ और लाभ

• Precision‑remanufactured for Hefei‑assembled EX200‑5 – This twin pump set (9150726 / 9152668) is specifically rebuilt to Hitachi‘s factory specifications for the locally produced (Hefei) EX200‑5 excavator. Every critical component – cylinder block, piston assemblies, valve plate, swashplate, bearings, and seals – is either renewed or replaced with new, high‑quality parts. The result is restored hydraulic performance at a fraction of the cost of a new genuine pump set.

• Original Hitachi tandem axial piston architecture – The two pumps work together as a variable displacement tandem system, powering travel, swing, boom, arm, and bucket circuits independently. This design ensures smooth, coordinated multi‑function operation without internal flow loss – exactly as your EX200‑5 performed when it left the Hefei assembly line.

• Restored 20‑ton class power – After remanufacturing, the pump set delivers a rated working pressure of 31.9 MPa (≈4,630 psi) with intermittent peaks up to 34.3 MPa (≈4,975 psi). Combined flow is approximately 360‑400 L/min at rated engine speed. Your excavator regains full digging force, fast cycle times, responsive swing, and powerful travel.

• 集成式负载敏感功率控制 – 原厂功率控制（负载敏感）系统已完全重建。该系统持续将泵输出与实际工作需求相匹配，从而降低油耗、防止突加负载时发动机熄火，并延长整个液压系统的使用寿命。集成的先导齿轮泵也已完全再制造。.

• 高性价比的新品替代方案 – A new Hitachi main pump set for a 20‑ton excavator is a major investment. Our remanufactured 9150726 / 9152668 gives you the same fit, form, and function at a significantly lower price, without sacrificing reliability. Each pump is dyno‑tested before dispatch.

• 直接螺栓固定替换 – Mounting flanges, drive shaft splines, and hydraulic port configurations are restored to original Hefei‑spec Hitachi dimensions. No modifications, no adapters, no fabrication – your mechanic unbolts the old pumps and bolts these in.

• 发货前可视化确认 – We send you clear, high‑resolution photographs of the actual remanufactured units (mounting flanges, splines, port threads, castings, overall condition) before packing. You approve shipment – we never ship blind.

• त्वरित डिलीवरी – 5–8 working days from our Guangzhou warehouse. Monthly supply capacity of 300 sets, available for single‑set or bulk orders.

2. अनुप्रयोग

The remanufactured Hitachi 9150726 / 9152668 main pump set is ideal for the Hefei‑built EX200‑5 (20‑ton class) used in demanding job sites:

• 重型建筑与基础设施 – Highway excavation, dam building, bridge footings, large‑scale earthmoving. The restored tandem pumps deliver simultaneous boom, arm, and travel power without internal leakage – no power fade, no sluggish response, even on long shifts.

• 采石与骨料生产 – Loading trucks, stockpile management, and material handling in abrasive dust conditions. New bearings, seals, and wear plates ensure the pumps survive where worn units fail. Consistent flow and pressure mean faster cycle times and lower fuel consumption.

• Mining support – Site cleanup, road maintenance, drainage works, and equipment pad grading. The load‑sensing control reduces fuel burn during light‑duty cycles, saving money over thousands of operating hours.

• 拆除与废料处理 – Shock loads and vibration are routine. Our remanufacturing process replaces all wear components, restoring the pumps‘ ability to withstand harsh, unpredictable conditions.

• 设备租赁车队 – 20‑ton excavators are rental workhorses. A remanufactured pump set offers predictable service life (3,000–5,000 hours) at a cost that makes proactive replacement financially sensible – avoiding costly mid‑rental failures, towing bills, and customer complaints.

• 林业与土地清理 – Steep slopes, fallen timber, hidden obstacles. The integral power control prevents engine stall under sudden load spikes, maintaining consistent hydraulic power for saws, grapples, and mulchers.

3. 为何选择 होंगतेंगदा पार्ट्स – Remanufacturing Without Compromise

At Hongtengda Parts, we have been remanufacturing hydraulic pumps for Hitachi excavators since 2001. We know that a main pump failure on your EX200‑5 stops your job site completely. Our remanufacturing process is not a “clean and reseal” – it is a factory‑grade restoration.

我们的 6 步再制造流程：

1. 完全拆解 – Each pump is stripped down to individual components: cylinder block, piston assemblies, valve plate, swashplate, bearings, shaft, housing, and control valves.

2. 清洁与裂纹检测 – 所有零件彻底清洁，并对关键铸件进行染色渗透检测以检查裂纹。无法修复的零件予以报废。.

3. 磨损部件更换 – All seals, O‑rings, bearings, and gaskets are replaced with new. The cylinder block and valve plate are re‑ground to restore flatness. Piston assemblies are matched as a set and replaced if worn. The swashplate surface is reconditioned.

4. 精密重新组装 – Components are reassembled using OEM torque specifications. Clearance tolerances on the cylinder block / valve plate interface are verified.

5. 液压测试台验证 – The completed pump set is mounted to a test stand and run through its full pressure and flow range. We verify operating pressure (up to 31.9 MPa), flow rate (approx. 360‑400 L/min total), case drain leakage, and power control response. A test report is available upon request.

6. 最终质量检查与包装 – The pumps are painted, fitted with protective port caps, and packed in a heavy‑duty wooden case for export.

为何我们的再制造泵优于更便宜的“翻新”单元：

• 新轴承和密封件 – 许多预算型翻新商为了节省成本会重复使用旧轴承。我们不会。所有旋转部件均使用新轴承——这是决定泵使用寿命的最关键因素。.

• 精密研磨的磨损表面 – 缸体和配流盘经过重新研磨以恢复平面度。研磨表面对于实现低内部泄漏至关重要。没有它，泵将在数周内过热并失去动力。.

• 完整测试报告 – 应要求，我们提供显示压力、流量、壳体泄油和温度测量值的测试报告。您在购买前即可看到数据。.

您不会买到的是： A used pump with new paint and a set of O‑rings. Our remanufactured pump set is restored to meet or exceed OEM performance standards – at a price that makes sense for your older EX200‑5.

• 超过 25 年的行业经验 – 公司成立于 2001 年，我们已为日立、卡特彼勒、小松、神钢、沃尔沃、三一及众多其他品牌再制造了数千台泵。.

• 90% स्टॉक उपलब्धता – 9150726 / 9152668 pump sets are in stock as remanufactured units, ready for dispatch from our Guangzhou warehouse.

• 24 小时发货 – 从我们广州枢纽至您的货代仅需 1 天；国际订单在 24 小时内发货。.

• 发货前可视化确认 – We never ship a pump blind. You receive clear photos of the actual units before packing – you approve, we ship.

• तकनीकी सहायता – Send us your EX200‑5 (Hefei) machine serial number and photos of the old pumps. We confirm compatibility and provide installation guidance within 2 hours.

Send us your Hefei‑built EX200‑5 machine serial number and photos of the old pumps – we will verify fitment, provide a quote, and document our pre‑shipment inspection within 24 hours.

Critical installation tip for the 9150726 / 9152668 remanufactured pump set:
– 壳体泄油管路 on each pump must be clear and unrestricted. A blocked case drain will blow the shaft seal instantly on first startup.
– Before installing the remanufactured pumps, flush the entire hydraulic system and replace all filters. Contaminants from the failed pumps will destroy a remanufactured unit just as quickly as a new one.
– 在每个液压连接处使用新的 O 型圈和密封垫圈。重复使用密封件必然导致泄漏。.
– After installation, run the engine at low idle for 2–3 minutes with the pumps in neutral, then slowly cycle each function (boom, arm, bucket, swing, travel) to purge air from the system.
– 检查泵与发动机飞轮壳的对中情况——不对中会导致轴承过早失效和轴封泄漏。.

保修说明： 保修期根据产品详情为 3 至 6 个月。. 我们不为原装二手或再制造零件提供保修服务。. 我们的价值在交付前即已体现：精心的再制造、彻底的测试以及发货前的视觉验证。对于需要保修选项的客户，我们可以提供新的售后市场单元报价——请咨询我们的销售团队。.

The main hydraulic pump set is the heart of your EX200‑5‘s hydraulic system. Our remanufactured 9150726 / 9152668 gives you restored 20‑ton class performance at a cost that keeps your budget intact – not with shortcuts, but with a genuine factory‑grade restoration. Send us your Hefei EX200‑5 machine serial number – we will confirm compatibility and provide a quote within 24 hours.