日立 ZAX450-6 液压主泵 – 中国再制造 (9184686)

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Thông tin chi tiết

1. Các tính năng và lợi ích chính

• Professionally remanufactured to OEM specifications – This main hydraulic pump (OEM 9184686) has been fully disassembled, cleaned, inspected, and rebuilt in our ISO‑certified facility in China. Worn components – cylinder block, piston assemblies, valve plate, swashplate, bearings, seals – are replaced with new, high‑quality parts. The result is a pump that delivers performance and reliability comparable to a new unit at a fraction of the cost.

• Original Hitachi specification for ZAX450‑6 – The 9184686 is the direct replacement for the 40‑ton class ZAX450‑6, ZX450, and related models. It restores the factory hydraulic power, flow, and pressure characteristics that your machine was designed to deliver.

• Tandem variable displacement axial piston design – Two independent pumping sections in one housing power the travel, swing, boom, arm, and bucket circuits simultaneously. This design allows smooth, coordinated operation even under heavy load – no power loss when you need to combine functions.

• Restored flow and pressure – After remanufacturing, this pump delivers rated working pressure of approximately 34–35 MPa (≈4,900–5,100 psi) and a total flow of over 400 L/min (two main sections plus integral gear pump). Your ZAX450‑6 regains full digging force, fast cycle times, and responsive travel.

• 集成功率控制（负载敏感）系统 – The rebuilt pump retains the factory power control system, which matches pump output to actual working load. This reduces fuel consumption, prevents engine stall, and extends the life of both the pump and the hydraulic system. The integral pilot gear pump is also rebuilt to supply the control circuit.

• 高性价比的新品替代方案 – A new genuine Hitachi main pump for a 40‑ton excavator is a significant investment. Our remanufactured 9184686 gives you the same fit, form, and function at a much lower price, without sacrificing reliability. Each pump is tested on a hydraulic test stand before dispatch.

• 直接螺栓固定替换 – 安装法兰、驱动轴花键和液压油口配置均已恢复至日立原厂规格。无需改装、无需转接头、无需现场加工 – 您的机械师只需拆下旧泵，再安装此泵即可。.

• 发货前视觉确认 – 在包装前，我们会向您发送实际再制造单元（安装法兰、花键、油口螺纹、整体状况）的详细高清照片。您批准发货后 – 我们绝不盲目发货。.

• Giao hàng nhanh – 从我们广州仓库发货，交货期为 5–8 个工作日。月供应能力为 300 台，可接受单件或批量订购。.

2. Ứng dụng

The remanufactured Hitachi 9184686 main pump is ideal for ZAX450‑6 and 40‑ton class excavators used in high‑production environments:

• Large‑scale mining & quarrying – 40‑ton excavators are the backbone of many open‑pit mines and aggregate quarries. A pump with restored volumetric efficiency delivers full power all day – faster loading cycles, better fuel economy, and no mid‑shift power fade.

• Heavy civil construction – Dam building, highway excavation, tunnel portal work, and large‑scale earthmoving demand consistent hydraulic power. A remanufactured pump gives you predictable performance at a cost that makes sense for older machines.

• Demolition & scrap recycling – Shock loads and vibration accelerate pump wear. Our remanufacturing process replaces all bearings, seals, and wear plates, restoring the pump‘s ability to survive the most punishing conditions.

• Material handling & port operations – Loading logs, scrap metal, or aggregates requires smooth, responsive hydraulic control. A properly remanufactured pump with factory‑spec tolerances provides that control without the expense of a new unit.

• 设备租赁车队 – Keeping 40‑ton excavators in rental service means minimising downtime. A remanufactured pump offers a predictable service life (3,000–5,000 hours) and allows you to budget for replacements without the shock of a new genuine price tag.

3. 为何选择我们 Phụ tùng Hongtengda – Remanufacturing That Delivers

At Hongtengda Parts, we have been remanufacturing hydraulic pumps for excavators since 2001. We know that a main pump failure on a ZAX450‑6 stops production 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 – 泵被完全拆解至单个零件：缸体、柱塞组件、配流盘、斜盘、轴承、轴、壳体及控制阀。.

2. 清洗与裂纹检测 – All parts are thoroughly cleaned and inspected for cracks or damage using dye penetrant testing on critical castings. Irreparable parts are scrapped.

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, high‑quality parts. 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 or replaced.

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。 – 按照OEM扭矩规格进行组装。使用千分表验证缸体/配流盘配合面的间隙公差。.

5. 液压测试台验证 – The completed pump is mounted to a test stand and run through its full pressure and flow range. We verify operating pressure (up to 35 MPa), flow rate (400+ L/min total), case drain leakage (must be within spec), and power control response. A test report is available upon request.

6. 最终质量检查与包装 – 泵进行喷漆，安装保护性油口盖，并装入重型木箱以供出口。.

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 is restored to meet or exceed OEM performance standards – at a price that makes sense for your older ZAX450‑6.

• 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% – 9184686 pumps 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 – 我们从不盲目发货。您在包装前会收到实际单元清晰照片——您确认后，我们发货。.

• Hỗ trợ kỹ thuật – Send us your ZAX450‑6 machine serial number and a photo of the old pump. We confirm compatibility and provide installation guidance within 2 hours.

Send us your Hitachi ZAX450‑6 machine serial number and a photo of the old pump – we will verify fitment, provide a quote, and document our pre‑shipment inspection within 24 hours.

Critical installation tip for the 9184686 remanufactured pump:
– 壳体回油管路 必须保持畅通无阻。堵塞的壳体泄油管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。来自故障泵的污染物会像损坏新泵一样迅速地损坏再制造单元。.
– 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，让发动机在泵处于中位时以低怠速运行2-3分钟，然后缓慢循环每个功能（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 is the heart of your ZAX450‑6’s hydraulic system. Our remanufactured 9184686 gives you restored 40‑ton class performance at a cost that keeps your budget intact – not with shortcuts, but with a genuine factory‑grade restoration. Send us your ZAX450‑6 serial number – we will confirm compatibility and provide a quote within 24 hours.