{"id":2532,"date":"2026-06-15T07:46:47","date_gmt":"2026-06-15T07:46:47","guid":{"rendered":"https:\/\/www.hongtengdaparts.com\/?post_type=product&p=2532"},"modified":"2026-06-15T07:47:00","modified_gmt":"2026-06-15T07:47:00","slug":"hitachi-ex1200-5-main-hydraulic-pump-ya00003078","status":"publish","type":"product","link":"https:\/\/www.hongtengdaparts.com\/es\/product\/hitachi-ex1200-5-main-hydraulic-pump-ya00003078\/","title":{"rendered":"Bomba Hidr\u00e1ulica Principal Hitachi EX1200\u20115 YA00003078 \u2013 Remanufacturada en China"},"content":{"rendered":"

Informaci\u00f3n detallada<\/h3>\n\n\n\n\n\n\n\n\n\n
Par\u00e1metro<\/th>\nValor<\/th>\nNota<\/th>\n<\/tr>\n
Origen<\/b><\/td>\nChina<\/td>\nRemanufacturado<\/td>\n<\/tr>\n
Garant\u00eda<\/b><\/td>\n3 a 6 meses seg\u00fan los detalles del producto; no ofrecemos garant\u00eda para productos originales y usados.<\/td>\n\u2013<\/td>\n<\/tr>\n
Cantidad m\u00ednima de pedido<\/b><\/td>\n1 unidad<\/td>\n\u2013<\/td>\n<\/tr>\n
Producci\u00f3n Mensual<\/b><\/td>\n300 piezas\/mes<\/td>\n\u2013<\/td>\n<\/tr>\n
Detalles del embalaje<\/b><\/td>\nEmbalaje en caja de madera o personalizado<\/td>\n\u2013<\/td>\n<\/tr>\n
Condiciones de pago<\/b><\/td>\nTransferencia bancaria, Western Union, PayPal, Western Union<\/td>\n\u2013<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
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Why the EX1200\u20115 Pump Is Different from Every Other Pump You Have Bought<\/span><\/h3>\n

You have replaced pumps on 20\u2011ton, 30\u2011ton, even 70\u2011ton machines. The EX1200\u20115 is a different animal. Its main hydraulic pump (YA00003078) pushes over 1,200 L\/min at pressures exceeding 34 MPa. It runs 20 hours a day, 6 days a week, in dust so thick you can taste it. When this pump fails, you do not call a service truck. You call a crane, a low\u2011boy, and a prayer.<\/span><\/p>\n

Most hydraulic shops will not touch a pump this size. They lack the test stands, the tooling, and the experience. The few that do often cut corners \u2013 reusing bearings, skipping the critical step of grinding the cylinder block, painting over cracks. On a 120\u2011ton machine, those shortcuts cost you a week of production.<\/span><\/p>\n

We remanufacture EX1200\u20115 pumps properly, or we do not do it at all. Here is what proper actually means.<\/span><\/strong><\/p>\n

The Three Things That Kill EX1200\u20115 Pumps \u2013 And How We Fix Each<\/span><\/h3>\n

1. Contaminated oil scoring the cylinder block and valve plate<\/span><\/strong><\/p>\n

On a smaller pump, a scored cylinder block might last another 1,000 hours. On an EX1200\u20115, the massive flow rates turn micro\u2011scoring into catastrophic leakage within weeks. We do not clean and hope. We grind the cylinder block and valve plate to restore flatness to within 0.002mm. If grinding cannot save them, we replace them with new OEM\u2011grade components.<\/span><\/p>\n

2. Bearing fatigue from millions of stress cycles<\/span><\/strong><\/p>\n

The bearings in an EX1200\u20115 pump support loads that would crush a car. After 10,000 hours, every bearing has microscopic fatigue cracks. Some shops reuse them to save cost. We never do. All bearings are replaced \u2013 every single one. This is not negotiable.<\/span><\/p>\n

3. Shaft seal failure from blocked case drain lines<\/span><\/strong><\/p>\n

On a 120\u2011ton excavator, the case drain line is long, routed through tight spaces, and easily kinked or plugged. A blocked drain creates back pressure that blows the shaft seal instantly on startup. We test every pump on a dyno with the case drain line open and monitored. We cannot fix a blocked line on your machine \u2013 but we can warn you before you install. We include a bold\u2011print installation sheet: \u201cCHECK CASE DRAIN FIRST.\u201d<\/span><\/p>\n

What a Remanufactured YA00003078 Pump Actually Costs You<\/span><\/h3>\n

Let us skip the marketing and talk real numbers.<\/span><\/p>\n

\n\n\n\n\n\n\n\n\n
Escenario<\/span><\/th>\nCosto<\/span><\/th>\nTiempo de inactividad<\/span><\/th>\nRisk<\/span><\/th>\n<\/tr>\n<\/thead>\n
New OEM pump<\/span><\/td>\nVery high ($40k\u201360k+)<\/span><\/td>\n2\u20114 weeks lead time<\/span><\/td>\nLow \u2013 but hard to justify on an older EX1200\u20115<\/span><\/td>\n<\/tr>\n
Used pump from salvage<\/span><\/td>\nModerate ($10k\u201315k)<\/span><\/td>\nUnknown \u2013 often weeks to find<\/span><\/td>\nHigh \u2013 you buy someone else\u2018s wear<\/span><\/td>\n<\/tr>\n
Rebuilt by local shop<\/span><\/td>\nLow ($5k\u20138k quote)<\/span><\/td>\n1\u20112 weeks<\/span><\/td>\nVery high \u2013 no test stand, reused bearings, short life<\/span><\/td>\n<\/tr>\n
HTD remanufactured<\/span><\/td>\nModerate ($12k\u201318k)<\/span><\/td>\n5\u20118 days from stock<\/span><\/td>\nLow \u2013 new wear parts, fully tested<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

The used pump gamble:<\/span><\/strong>\u00a0You pay $12,000 for a pump that looks clean. It fails after 800 hours. Now you pay again. And again. Suddenly you have spent more than a new OEM pump.<\/span><\/p>\n

The HTD reman option:<\/span><\/strong>\u00a0You pay once. You get a pump with new bearings, ground wear surfaces, and a test report. You install it. You run it for 3,000\u20135,000 hours. Then you decide whether to do it again.<\/span><\/p>\n

Why You Cannot Just \u201cSend It to Any Shop\u201d<\/span><\/h3>\n

We have seen EX1200\u20115 pumps that came from other \u201cremanufacturers\u201d with:<\/span><\/p>\n

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  • \n

    Old bearings still installed \u2013 you could feel the roughness by hand<\/span><\/p>\n<\/li>\n

  • \n

    Cylinder block scored but not ground \u2013 they just polished the surface<\/span><\/p>\n<\/li>\n

  • \n

    Wrong torque on high\u2011pressure bolts \u2013 leading to oil leaks within days<\/span><\/p>\n<\/li>\n

  • \n

    No test report \u2013 because they do not own a test stand capable of 1,200 L\/min<\/span><\/p>\n<\/li>\n<\/ul>\n

    A proper EX1200\u20115 pump reman requires:<\/span><\/p>\n

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    • \n

      A 200+ HP electric motor to drive the pump on the test stand<\/span><\/p>\n<\/li>\n

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      Flow meters rated for over 1,000 L\/min<\/span><\/p>\n<\/li>\n

    • \n

      Pressure transducers accurate to 0.1 MPa<\/span><\/p>\n<\/li>\n

    • \n

      A workshop that has done this before \u2013 not learning on your pump<\/span><\/p>\n<\/li>\n<\/ul>\n

      We have the equipment. We have the experience. We have done EX1200 pumps for mines across Southeast Asia, Africa, and South America.<\/span><\/p>\n

      What You Will Receive<\/span><\/h3>\n
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      • \n

        YA00003078 pump, fully remanufactured<\/span><\/strong>\u00a0\u2013 Especificaci\u00f3n OEM, remanufacturada en China<\/span><\/p>\n<\/li>\n

      • \n

        Hydraulic test report<\/span><\/strong>\u00a0\u2013 including rated pressure, flow, case drain, and control response<\/span><\/p>\n<\/li>\n

      • \n

        All bearings new<\/span><\/strong>\u00a0\u2013 no exceptions<\/span><\/p>\n<\/li>\n

      • \n

        Cylinder block and valve plate re\u2011ground<\/span><\/strong>\u00a0\u2013 flatness verified<\/span><\/p>\n<\/li>\n

      • \n

        New seals and O\u2011rings<\/span><\/strong>\u00a0\u2013 high\u2011temperature fluororubber<\/span><\/p>\n<\/li>\n

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        Fotos previas al env\u00edo<\/span><\/strong>\u00a0\u2013 you see the actual pump before packing<\/span><\/p>\n<\/li>\n

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        Caja de madera resistente<\/span><\/strong>\u00a0\u2013 fumigation\u2011free, steel\u2011banded, built for sea freight<\/span><\/p>\n<\/li>\n<\/ul>\n

        The Honest Warranty Statement<\/span><\/h3>\n

        El per\u00edodo de garant\u00eda es de 3 a 6 meses seg\u00fan los detalles del producto.\u00a0<\/span>No ofrecemos servicio de garant\u00eda para piezas originales usadas o remanufacturadas.<\/span><\/strong>\u00a0Here is why: We put our quality into the work before the pump leaves our shop. We do not rely on a warranty to fix problems after you install it. We rely on proper remanufacturing, rigorous testing, and your approval of pre\u2011shipment photos. For customers who need a traditional warranty, we can quote new aftermarket pumps \u2013 ask our sales team.<\/span><\/p>\n

        Before You Order \u2013 One Photo, One Serial Number<\/span><\/h3>\n

        The EX1200\u20115 had multiple production variants. The main pump mounting flange, drive spline, and regulator settings changed over the years. To confirm fitment, send us:<\/span><\/p>\n

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        • \n

          N\u00famero de serie de la m\u00e1quina<\/span><\/strong>\u00a0(EX1200\u20115\u2011xxxxx)<\/span><\/p>\n<\/li>\n

        • \n

          A clear photo of the old pump\u2018s nameplate<\/span><\/strong>\u00a0(or the pump itself if the tag is missing)<\/span><\/p>\n<\/li>\n<\/ul>\n

          We will reply within 24 hours with compatibility confirmation and a firm quote.<\/span><\/p>\n

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          Installation note for EX1200\u20115 pumps:<\/span><\/strong>
          \n\u2013 The case drain line is your enemy if blocked. Before connecting the new pump, blow compressed air through the line to verify it is clear. A blocked drain will destroy the shaft seal instantly.<\/span>
          \n\u2013 Flush the hydraulic system and replace all filters. If the old pump failed with debris, the contamination is everywhere \u2013 valves, motors, cylinders. A new pump will not survive in a dirty system.<\/span>
          \n\u2013 Use new O\u2011rings and sealing washers on every port. Reused seals are the most common cause of external leaks.<\/span>
          \n\u2013 After installation, idle for 5 minutes, then slowly cycle each function to purge air. Do not overload the machine for the first hour.<\/span><\/p>\n<\/blockquote>\n

          Your EX1200\u20115 is a production machine. Its main pump should not be the weak link. A properly remanufactured YA00003078 gets you back to digging \u2013 not next month, but now.<\/span><\/strong><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"\n\n\n\n\n\n\n\n\n
          Par\u00e1metro<\/th>\nValor<\/th>\n<\/tr>\n
          Modelo compatible<\/b><\/td>\nEX1200-5<\/td>\n<\/tr>\n
          Nombre del producto<\/b><\/td>\nBomba hidr\u00e1ulica Hitachi<\/td>\n<\/tr>\n
          N\u00famero de Pieza<\/b><\/td>\nYA00003078<\/td>\n<\/tr>\n
          Tipo de Producto<\/b><\/td>\nBomba hidr\u00e1ulica<\/td>\n<\/tr>\n
          Categor\u00eda<\/b><\/td>\nSistema Hidr\u00e1ulico<\/td>\n<\/tr>\n
          Marca<\/b><\/td>\nHTD<\/td>\n<\/tr>\n<\/tbody>\n<\/table>","protected":false},"featured_media":2535,"template":"","meta":[],"product_brand":[],"product_cat":[68],"product_tag":[],"class_list":["post-2532","product","type-product","status-publish","has-post-thumbnail","product_cat-hitachi-hydraulic-pump","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/www.hongtengdaparts.com\/es\/wp-json\/wp\/v2\/product\/2532","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hongtengdaparts.com\/es\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.hongtengdaparts.com\/es\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hongtengdaparts.com\/es\/wp-json\/wp\/v2\/media\/2535"}],"wp:attachment":[{"href":"https:\/\/www.hongtengdaparts.com\/es\/wp-json\/wp\/v2\/media?parent=2532"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.hongtengdaparts.com\/es\/wp-json\/wp\/v2\/product_brand?post=2532"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.hongtengdaparts.com\/es\/wp-json\/wp\/v2\/product_cat?post=2532"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.hongtengdaparts.com\/es\/wp-json\/wp\/v2\/product_tag?post=2532"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}