XINYA supplies excavator parts including hydraulic pumps, travel motors, swing devices, control valves, engine parts and undercarriage components. Send us your machine model, OEM part number or product photo for fast matching and quotation.

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CAT 330 GC Excavator Main Hydraulic Pump 5511122

Place of Origin China/US
Brand Name LIRACE/Caterpillar
5511122 5511136 5511121 K7V160 9195242 9256101

CAT 330 GC

Minimum Order Quantity 1 PCS
Price Negotiable price
Packaging Details Wooden case or as required
Delivery Time 5-8 Weekdays
Payment Terms Western Union,T/T
Supply Ability 300pcs /Month
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Basic Parameters & Introduction
This high-precision hydraulic main pump assembly has core original part numbers including 551-1122/5511122, 551-1136/5511136, and 551-1121/5511121. The core adopts Kawasaki's classic heavy-duty K7V160 pump type. This assembly is specially designed for Caterpillar's new generation of efficient excavators, perfectly matching 30 ton core models such as the CAT 330 GC. The product is designed based on first principles to deeply integrate fluid mechanics and electronic control speed regulation, ensuring absolute certainty of high-pressure and high flow output. The physical dimensions of the packaging are approximately 820mm × 440mm × 480mm, with an overall net weight of approximately 205kg. The original factory standard position is precisely docked.
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Maintenance Tips
"Daily inspection (every 10 hours): Before starting work, it is mandatory to check the sealing of the main pump shaft seal and high-pressure pipeline joints to eliminate any trace leakage hazards.

First running in period (50 hours of operation): After the new pump is installed and put into operation for 50 hours, the return oil filter element and the pilot high-precision filter element must be forcibly replaced to thoroughly filter out the initial trace debris.

Regular mandatory replacement (every 500/2000 hours): Replace the high-precision filter element of the entire vehicle every 500 hours; The oil tank must be thoroughly cleaned and the original factory standard anti-wear hydraulic oil replaced every 2000 hours (or up to 1 year). If under high load conditions such as crushing, the cycle needs to be forcibly shortened by 50%."
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Installation Tips
"Extreme cleaning: Noise reduction and dust removal treatment are required for the unpacking and installation environment. All hydraulic pipeline joints must be thoroughly cleaned with specialized cleaning agents before connecting to a new pump, and any foreign objects are strictly prohibited from entering the pump body.

Forced oil filling (core pit avoidance): After installation and before starting the engine, clean hydraulic oil must be filled from the air release/oil injection port on the top of the main pump. It is strictly prohibited to start dry grinding, otherwise the internal rotating components will undergo irreversible physical erosion within 3 seconds of ignition.

Low pressure transition: After the first ignition, the system must idle at low pressure for 10-15 minutes for automatic exhaust and thermodynamic adaptation. After the oil temperature and pressure stabilize, the workload can be gradually applied."
Brand China/US Brand Name LIRACE/Caterpillar
Model CAT 330 GC Product Name Hydraulic Pump
Part Number 5511122 5511136 5511121 K7V160 ApplicableBrand Caterpillar
Warranty Period 6-12 months Condition NEW
Standard or Non-standard Standard Type Guarantee We will inspect the products and send detailed pictures to the buyer for confirmation.
Applicable Industries Mechanical Repair Shops, Retail, Construction, Energy, Mining Shipping Method Sea freight, Air freight, DHL/FEDEX/TNT/EMS

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What We Do

Services we Offer

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What if there are quality problems with the purchased products?

Please rest assured completely. We implement strict quality control throughout the whole production process. From raw material incoming inspection to finished product delivery, all items undergo multiple rounds of rigorous technical inspection and performance testing, to fully ensure every delivered product meets 100% qualified standards. All unqualified products detected during inspection will be disposed of by centralized destruction, to firmly prevent defective goods from entering the market. Meanwhile, we provide an extended warranty period of 6 to 12 months for all products. Within the warranty period, if any non-artificial quality failure occurs, please contact us promptly. Our professional technical team will respond at the earliest time and offer targeted solutions based on actual conditions. In addition, we deliver all-round technical support to safeguard your after-sales operation. Always taking customer satisfaction as the core principle, we are committed to establishing long-term and stable cooperative partnerships with global clients.
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What happens if the delivered item is unsuitable for my needs?

Please rest assured. To ensure that the products you receive fully meet your needs, we will conduct multiple rounds of demand confirmation with you before shipment, fundamentally avoiding the problem of wrong or missing delivery. To further ensure accuracy, we will first conduct precise query and verification through the product part number you provide to ensure that the product model and specifications are completely matched. If you do not have an accurate part number temporarily, we will arrange professional technicians to check and confirm one by one according to the clear product pictures and corresponding construction machinery models you provide, and communicate and synchronize with you throughout the process until confirmed correct before arranging shipment, to fully ensure that you receive the products you need and avoid unnecessary troubles.
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What professional shipping and delivery standards can we provide you?

Within our international trade operations, we prioritize a high-efficiency supply chain and a transparent logistics framework. To ensure the accuracy of every shipment, a standardized PDI (Pre-Delivery Inspection) system is strictly enforced. Before the final sealing of containers, our QC specialists conduct a thorough re-examination. We provide clients with high-resolution photos of the actual items, packaging details, and the Packing List for Visual Confirmation, ensuring 100% compliance with order specifications and delivery transparency. We support versatile Incoterms, including EXW and FOB. To meet diverse delivery timelines and cost constraints, we offer a multi-modal logistics matrix ranging from Ocean Freight and Air Freight to global couriers (DHL/FEDEX/TNT/EMS). We guarantee full professional documentation support for every shipment to ensure a safe, timely, and compliant arrival at the port of destination.
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We are a global one-stop supplier of excavator spare parts. We maintain full control over the entire process from R&D and manufacturing to sales, delivering top-quality excavator components to you.

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