日立 ZAX450-6 油圧メインポンプ – 中国製リマニュファクチャード (9184686)

説明

詳細情報

1.主な特徴と利点

• 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.

• 統合型パワーコントロール（ロードセンシング）システム – 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.

• 新品純正品に代わる費用対効果の高い選択肢 – 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.

• 直接ボルトオン交換 – 取り付けフランジ、ドライブシャフトスプライン、および油圧ポートの構成は、オリジナルの日立仕様に復元されています。改造、アダプター、加工は一切不要で、整備士は古いポンプのボルトを外し、本ポンプをボルトで取り付けるだけです。.

• 出荷前の目視確認 – 梱包前に、実際のリマニュファクチャリングユニット（取り付けフランジ、スプライン、ポートねじ部、全体的な状態）の詳細な高解像度写真をお送りします。お客様が出荷を承認されましたら、当社は決して盲目的に出荷することはありません。.

• 迅速な配達 – 当社広州倉庫からのリードタイムは 5～8 営業日です。月間供給能力は 300 台で、単品注文または大口注文に対応可能です。.

2.アプリケーション

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.

• 機器レンタル事業者様向け – 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. 選ばれる理由 ホンテンダ部品 – 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.

Our 6‑step remanufacturing process:

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

2. 洗浄とクラック検査 – All parts are thoroughly cleaned and inspected for cracks or damage using dye penetrant testing on critical castings. Irreparable parts are scrapped.

3. 摩耗部品の交換 – 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. 精密再組み立て – Components are reassembled using OEM torque specifications. Clearance tolerances on the cylinder block / valve plate interface are verified using dial indicators.

5. 油圧テストスタンドによる検証 – 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. 最終品質チェックと梱包 – The pump is painted, fitted with protective port caps, and packed in a heavy‑duty wooden case for export.

Why our remanufactured pump outperforms cheaper “rebuilt” units:

• New bearings and seals – Many budget rebuilders reuse old bearings to save cost. We do not. All rotating components get new bearings – the single most important factor for pump longevity.

• 精密研磨された摩耗面 – The cylinder block and valve plate are re‑ground to restore flatness. A lapped surface is essential for low internal leakage. Without it, the pump will overheat and lose power within weeks.

• Full test report – Upon request, we provide a test report showing pressure, flow, case drain, and temperature measurements. You see the data before you buy.

お客様が購入されないもの： 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.

• 25年以上の業界経験 – Founded in 2001, we have remanufactured thousands of pumps for Hitachi, Caterpillar, Komatsu, Kobelco, Volvo, SANY, and many other brands.

• 90%の在庫状況 – 9184686 pumps are in stock as remanufactured units, ready for dispatch from our Guangzhou warehouse.

• 24時間以内の発送 – 広州拠点から貴社のフォワーダーまで1日で到着。国際注文は24時間以内に出荷。.

• 出荷前の目視確認 – We never ship a pump blind. You receive clear photos of the actual unit before packing – you approve, we ship.

• テクニカルサポート – 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:
– ケースドレンライン must be clear and unrestricted. A blocked case drain will blow the shaft seal instantly on first startup.
– リマニュファクチャリングポンプを設置する前に、油圧システム全体をフラッシングし、すべてのフィルターを交換してください。故障したポンプからの汚染物質は、新品と同様にリマニュファクチャリングユニットもすぐに破壊します。.
– すべての油圧接続部に新品のOリングとシールワッシャーを使用してください。シールの再使用は漏れの原因となります。.
– After installation, run the engine at low idle for 2–3 minutes with the pump in neutral, then slowly cycle each function (boom, arm, bucket, swing, travel) to purge air from the system.
– Check pump alignment with the engine flywheel housing – misalignment causes premature bearing failure and shaft seal leakage.

保証に関する注意事項： 保証期間は製品詳細に応じて3～6ヶ月です。. オリジナル中古品またはリマニュファクチャリング品については保証サービスを提供いたしません。. 当社の価値は、事前に提供されます。慎重なリマニュファクチャリング、徹底的なテスト、および出荷前の目視確認です。保証対象オプションを必要とするお客様には、新しいアフターマーケットユニットの見積もりを提供できます – 当社の営業チームにお問い合わせください。.

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.