説明
詳細情報
| パラメータ | 価値 | 備考 |
|---|---|---|
| 原産地 | 新品オリジナル | – |
| 状態 | 新品オリジナル | – |
| 保証 | 製品詳細に応じて3～6ヶ月。オリジナル品および中古品については保証を提供いたしません。. | – |
| 最小注文数量 | 1個 | – |
| 月間生産量 | 300個/月 | – |
| パッケージの詳細 | 木箱梱包またはカスタマイズ対応 | – |
| 支払条件 | T/T、XT、PayPal、ウェスタンユニオン | – |
| 納期 | 5～8営業日（受注状況による） | – |
| 発送方法 | 海上輸送、航空輸送、またはDHL/FEDEX/TNT/EMS | – |
| 保証措置 | 製品を点検し、詳細な写真を購入者に送付して確認をいただきます。. | – |
You are not buying a pump. You are buying the ability to move 80 tons of steel with split-second precision.
1. Why This Pump Matters
The HPK300 is not a component you keep on a shelf “just in case.” It is the singular heart of your ZAX650-5G or ZAX870-5G hydraulic system. Hitachi engines in the 360–382 kW class power these 70–84 ton giants, and the HPK300 transforms that mechanical grunt into the massive hydraulic flow and pressure needed for heavy loading, deep trenching, and high-cycle mining. ZAX870-5G systems operate at main relief pressures of 34.3 MPa and implement circuit pressures up to 39.2 MPa, with combined pump flow of around 500 L/min. This pump must react instantly to operator commands—swing, curl, crowd, travel—and maintain stable output under extreme loads.
When the HPK300 fails: No flow. No movement. The entire machine stops. Towing an 80‑ton excavator off a production face costs more in a single day than this pump.
2. What You Are Buying – No Compromises
This listing is for a new, genuine YB60001425 (OEM HPK300), not remanufactured, not rebuilt. Remanufactured pumps start with a used housing, worn internal geometry, and bearings that have already undergone thousands of stress cycles. By contrast, this HPK300 has zero hours, factory tolerances, and the full performance Hitachi engineers intended. Cores for the HPK300 HPKO/HPK series are in high demand; a new pump ensures no core surcharge, no delay, and no gamble on hidden fatigue.
3. Technical Overview
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OEM Number: YB60001425 (HPK300) – also cross‑referenced as HPK300AS and assembly number 9298854.
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Pump Type: Variable displacement triple axial piston pump (main sections) plus integral gear pump for the pilot circuit.
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Target Machines: Hitachi ZAX650‑5G / ZX650‑5G and ZAX870‑5G / ZX870‑5G (including LCH variants). Also compatible with ZAX670‑5G, ZX870‑5B and some earlier 670/870 series.
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Flow Contribution: On ZX870‑5G, two main variable displacement axial piston pumps deliver up to 2 x 512 L/min at rated engine speed, giving the HPK300 its massive total flow capacity.
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Pressure Rating: Designed for the Hitachi HIOS IIIB hydraulic system with main relief 34.3 MPa (approx. 4,975 psi) and ability to handle intermittent spikes to 39.2 MPa (approx. 5,680 psi).
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Construction: Cast iron housing, case‑hardened rotating group, precision‑ground cylinder block/valve plate interface for minimal internal leakage, with all seals rated for high‑temperature continuous operation in mining environments.
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Integral Pilot Pump: A built‑in gear pump supplies the pilot control circuit (approx. 3.9 MPa) with dedicated flow – no separate pilot pump to fail and no extra plumbing.
4. Who This Pump Serves – Real-World Applications
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Mining & quarrying: 70–80‑ton excavators spend 20+ hour shifts loading trucks. A pump with high volumetric efficiency holds full power as oil heats up – no mid‑shift fade, no longer cycles, no production loss.
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Heavy civil construction: Dam building, road cuttings, tunnel portals, and major earthmoving demand consistent multi‑function performance. The HPK300’s load‑sensing control matches flow to demand seamlessly.
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Port & material handling: Loading bulk commodities or steel scrap requires smooth, predictable hydraulic response. The HPK300 delivers the fine control needed.
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Large‑scale demolition: Shock loads and vibration are routine. New bearings and seals survive where reman pumps fail.
5. Stock Availability – Hongtengda Parts
Your 80‑ton machine does not wait. Neither should you. Hongtengda Parts keeps the HPK300 YB60001425 in stock at our Guangzhou warehouse – not in a supplier’s backlog, not on a slow boat.
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月間300個の供給能力 – Deep stock levels
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90% of our catalog in stock – Ready for immediate dispatch
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24時間以内の発送 – From our Guangzhou hub to your forwarder in 1 day
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専門的な輸出梱包 – Heavy‑duty wooden case, fumigation‑free, braced for sea or air freight
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出荷前の目視確認 – Clear, high‑resolution photos of your actual pump before packing. You approve, we ship – never blind
部品を何週間も待つ必要はない。 ホンテンダ部品 - 在庫と緊急性が出会う場所.
Critical installation notes:
– The case drain line must be clear and unrestricted. A blocked drain will blow the shaft seal instantly on first startup.
– Before installing, flush the system and replace all filters. Debris from a failed pump destroys a new pump just as quickly.
– Use new O‑rings on every port. Reused seals leak.
– After installation, idle for 2–3 minutes, then slowly cycle each function to purge air from the system.
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。. 当社は純正オリジナル部品に対する保証サービスは提供しておりません。. Our value is delivered up front: genuine components, new‑condition pump, and pre‑shipment visual verification. For warranty‑covered options, ask about aftermarket alternatives.
The HPK300 is the hydraulic heart of your ZAX650‑5G / ZAX870‑5G. A reman pump is a transplant from a tired donor. A new genuine pump is a fresh start. Choose certainty.
Send us your machine serial number and a photo of the old pump nameplate – we will confirm compatibility and provide a quote within 24 hours.
