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

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1. Các tính năng và lợi ích chính

• 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 – 工厂原装功率控制（负载敏感）系统已完全重建。该系统持续匹配泵输出与实际工作需求，从而降低燃油消耗，防止突然负载下的发动机熄火，并延长整个液压系统的寿命。集成的先导齿轮泵也已全面再制造。.

• 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.

• 发货前视觉确认 – 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.

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

2. Ứng dụng

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 – 在含磨蚀性粉尘的环境中装载卡车、堆料管理和物料搬运。新轴承、密封件和耐磨板确保泵在旧件已失效的工况下仍能可靠运行。稳定的流量和压力意味着更快的循环时间和更低的燃油消耗。.

• 矿山支持 – 场地清理、道路维护、排水工程及设备平台平整。负载敏感控制可在轻载工况下降低燃油消耗，在数千小时的运行中节省成本。.

• 拆除与废料处理 – 冲击载荷和振动是常态。我们的再制造工艺更换了所有磨损部件，恢复了泵承受恶劣、不可预测工况的能力。.

• 设备租赁车队 – 20吨级挖掘机是租赁市场的常用设备。再制造泵组提供可预测的使用寿命（3,000-5,000小时），其成本使得主动更换在经济上变得合理 – 避免了租赁期间代价高昂的故障、拖车费用和客户投诉。.

• 林业与土地清理 – 陡坡、倒伏树木、隐蔽障碍物。集成的功率控制可防止在突然的负载峰值下发动机熄火，为锯具、抓斗和粉碎机维持稳定的液压动力。.

3. 为何选择我们 Phụ tùng Hongtengda – 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. 清洗与裂纹检测 – 所有零件彻底清洗，并使用着色渗透检测法对关键铸件进行裂纹检查。不可修复的零件予以报废。.

3. – 以下部件始终更换为新件，而非重复使用：所有密封件、所有 O 型圈、所有垫片、所有滚子轴承、完整的活塞/滑靴组件、缸体耐磨板和配流盘。 – 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. – 使用 OEM 扭矩规格重新组装部件。使用千分表验证活塞组件和配流盘接口处的间隙公差。 – 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.

为什么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节省成本而重复使用旧轴承。我们绝不这样做。所有旋转部件均安装新轴承——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 – 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。.

• Tình trạng hàng tồn kho của mã 90% – 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 小时内发出。.

• 发货前视觉确认 – We never ship a pump blind. You receive clear photos of the actual units before packing – you approve, we ship.

• Hỗ trợ kỹ thuật – 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:
– 壳体回油管路 每个泵上的泄油口必须清洁畅通无阻。堵塞的泄油口会在首次启动时立即冲毁轴封。.
– 在安装再制造泵之前，请冲洗整个液压系统并更换所有滤芯。来自失效旧泵的污染物会像损坏新泵一样迅速地毁掉再制造单元。.
– 在每个液压连接处使用新的 O 型圈和密封垫圈。重复使用旧密封件必然导致泄漏。.
– 安装后，在泵处于中位的情况下，让发动机以低怠速运转2-3分钟，然后缓慢操作每个功能（动臂、斗杆、铲斗、回转、行走）以排出系统中的空气。.
– 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： 保修期为3至6个月，具体取决于产品详情。. 我们不提供原厂旧件或再制造零件的保修服务。. 我们的价值在交付前就已体现：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产品报价 – 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.