Used O&K Main Hydraulic Pumps

Our Available Stock of O&K Hydraulic Pumps

Main Pumps for O&K RH Excavators

Our expertise in main hydraulic pumps for O&K RH series excavators covers the entire range, from compact RH5 models to heavy-duty RH30D excavators. These hydraulic pumps form the core of your machine's hydraulic system, powering all circuits: travel, rotation, lifting, and attachments. Our refurbished main hydraulic pumps for RH6, RH8, RH9, RH20, and RH30 deliver performance equivalent to new parts thanks to our rigorous refurbishment process. Each pump undergoes pressure and flow testing on our specialized test bench. Seals, pistons, and distributors are systematically replaced with genuine O&K parts. Our permanent stock of main hydraulic pumps for RH excavators ensures immediate availability, reducing your machines' downtime. Buying refurbished equipment enables substantial savings while maintaining the reliability required for intensive earthmoving work.

Main Pumps for O&K F106 Graders

The O&K F series graders, including models F105, F106, and F106A, require specific main hydraulic pumps to ensure optimal operation of their blade and steering systems. These grader hydraulic pumps stand out for their robustness and ability to maintain constant pressure even during the most demanding grading tasks. Our inventory includes main hydraulic pumps tailored for various F106 grader configurations, whether powered by Cummins or Deutz engines. The refurbishment process follows a strict protocol: complete disassembly, dimensional inspection, wear parts replacement, and performance testing. The main brands of parts used during refurbishment guarantee perfect compatibility with original hydraulic systems. These refurbished pumps offer a cost-effective alternative to new parts, highly valued by road contractors and local authorities who intensively use their graders for road maintenance.

Main Pumps for O&K L25 Loaders

O&K L series wheel loaders, particularly the L25 model, are equipped with main hydraulic pumps sized for heavy-duty handling applications. These pumps simultaneously power lifting circuits, bucket tilt, steering, and travel, requiring absolute reliability. Our selection of main hydraulic pumps for L25 loaders includes refurbished units tested to our most stringent technical standards. The refurbishment process involves checking internal tolerances, replacing seals and bearings, and calibrating service pressures. These refurbished pumps maintain original performance while offering a reduced acquisition cost. Codimatra's expertise in O&K hydraulics allows us to provide pumps adapted to various L25 versions, whether standard machines or specialized versions for applications like port handling or forestry work.

Hydraulic Pumps by O&K Machine Model

Pumps for RH6, RH8, RH9 Excavators

Medium-tonnage O&K hydraulic excavators RH6, RH8, and RH9 are the backbone of many earthmoving and demolition projects. Their main hydraulic pumps, true hearts of these machines, must withstand intensive working cycles while maintaining consistent performance. Our stock of hydraulic pumps for these models includes units refurbished to our strictest standards, ensuring reliability equivalent to new parts. The RH6 pumps provide a nominal flow rate adapted to this 20-ton excavator’s needs, while pumps for RH8 and RH9 offer higher capacities corresponding to their heavier tonnage. Each hydraulic pump undergoes a full refurbishment process, including replacement of pistons, seals, and distributors with genuine O&K parts. Performance tests on our hydraulic bench verify flow, pressure, and efficiency before shipment. These refurbished pumps restore original performance to your RH6, RH8, and RH9 excavators while delivering substantial cost savings compared to new components.

Pumps for RH20, RH30, RH30D Excavators

Heavy-duty O&K RH20, RH30, and RH30D excavators represent the high-power machine segment intended for large-scale projects and intensive demolition applications. Their main hydraulic pumps, sized to handle extreme stresses, require precise technical expertise during refurbishment. Our range of pumps for these models incorporates the latest O&K technological advancements, including those on the RH30D series. These high-displacement pumps simultaneously supply all circuits: crawler travel, 360° rotation, arm lifting, and bucket tilt, maintaining high service pressures. Refurbishment follows a reinforced protocol, including tolerance verification to the hundredth of a millimeter, systematic replacement of wear components, and precise calibration of relief pressures. Our refurbished pumps for RH20, RH30, and RH30D provide a reliable, cost-effective alternative for contractors facing the high expense of new parts, without compromising machine productivity on demanding sites.

Pumps for F105, F106, F106A Graders

O&K F series graders, especially models F105, F106, and F106A, are renowned for precise grading and robustness in roadwork. Their main hydraulic pumps, specifically designed for precise earthmoving applications, must maintain perfect hydraulic stability during fine blade adjustments. Our expertise in pumps for F106 graders is based on deep knowledge of these machines’ specifics, including their articulated steering systems and sophisticated blade control. Pumps for F105, F106, and F106A models excel in delivering variable flows according to operational needs, enabling precise blade movements while ensuring steering and propulsion. Refurbishment includes checks specific to grading applications: flow regularity verification, response testing to load variations, and differential pressure calibration. These refurbished pumps help public works companies keep their F106 graders in peak condition, ensuring quality roadwork and effective earthmoving operations.

References and Technical Specifications

Serial Numbers and Compatibility

Precise identification of O&K main hydraulic pumps relies on decoding serial numbers and manufacturer references engraved on each component’s data plate. These numbers, generally alphanumeric series of 8 to 12 characters, allow accurate determination of compatibility with your specific O&K machine model. For RH series excavators, references typically start with "2244" or "2135", followed by numbers indicating displacement and hydraulic specifications. F106 graders use references beginning with "1928" or "2460", while L25 loaders feature numbers starting with "2403". Codimatra’s technical team expertly decodes these references to provide you with the main hydraulic pump precisely adapted to your machine. Each refurbished pump retains its original identification plate, supplemented by our refurbishment label noting the revision date and tests performed. This traceability guarantees perfect compatibility with original O&K hydraulic systems, preventing any risk of incompatibility or malfunction upon installation on your construction equipment.

Flow Rates and Operating Pressures

O&K main hydraulic pumps are characterized by hydraulic performances specifically tailored to each machine range, with flow rates ranging from 80 to 250 liters per minute depending on model and machine power. RH6 excavators operate with pumps delivering a nominal flow of 120 l/min at 2000 rpm, under a maximum pressure of 350 bars, effectively powering all hydraulic circuits. Heavier models like the RH30D require larger displacement pumps capable of flows up to 200 l/min under 380 bars maximum pressure. F106 graders use pumps producing 140 l/min at 320 bars, optimized for precise blade movements and power steering systems. Our refurbished pumps maintain these original performances thanks to precise relief pressure calibration and full flow verification on the test bench. Testing includes volumetric efficiency measurement, which must reach at least 95% of manufacturer specifications, and verifying pressure stability under varying loads. This technical rigor ensures each delivered main hydraulic pump strictly meets the hydraulic characteristics required by your O&K machine.

Dimensions and Connections

O&K main hydraulic pumps feature standard dimensions and connection configurations according to machine series, facilitating replacement and maintenance operations. Pumps for RH6 to RH9 excavators typically measure 420mm long, 280mm wide, and 320mm high, weighing approximately 45kg. Hydraulic connections use BSP or metric threads depending on versions, with suction diameters of 1"1/4 and discharge diameters of 1". Pumps for heavy excavators RH20 and RH30D have larger dimensions: 480mm x 320mm x 380mm, weighing 65kg, with reinforced 1"1/2 suction connections. F106 graders use more compact pumps measuring 380mm x 250mm x 290mm, weighing 38kg, optimized for fitting into restricted engine compartments. Each Codimatra refurbished hydraulic pump strictly retains original dimensions, ensuring perfect fit without modification of the machine frame. Hydraulic connections are systematically verified and replaced if necessary during refurbishment, exclusively using parts to O&K specifications. This attention to dimensional details and connections guarantees trouble-free installation and perfect sealing of your machine's hydraulic system.

Codimatra Selection and Refurbishment Process

Disassembly and Quality Control

Codimatra's refurbishment process for O&K main hydraulic pumps begins with meticulous disassembly according to technical procedures specific to each machine series. Our hydraulic technicians completely dismantle the pump following the disassembly sequence recommended by O&K, allowing detailed inspection of each internal component. Codimatra’s expertise in O&K hydraulics enables precise identification of wear parts requiring replacement: pistons, seals, bearings, distributors, and check valves. Each element undergoes rigorous dimensional checks using calibrated metrology instruments, verifying tolerances down to the hundredth of a millimeter. Friction surfaces are visually inspected and measured with a roughness gauge to detect any abnormal wear or scratches that could affect sealing. Bores and bearing seats are measured to ensure compliance with manufacturer specifications. Our permanent stock of genuine O&K parts guarantees immediate replacement of faulty components, exclusively using top brands approved by the manufacturer to maintain your main hydraulic pump's reliability and original performance.

Hydraulic Performance Testing

After complete refurbishment, each O&K main hydraulic pump undergoes rigorous testing on our specialized hydraulic test bench, replicating real operating conditions on construction machines. Performance tests include verifying nominal flow at various engine speeds, measuring maximum service pressures, and validating volumetric efficiency, which must reach a minimum of 95% of manufacturer specifications. Our test bench simulates variable loads encountered during earthmoving work, testing pressure stability under cyclic stress. Internal leakages are precisely measured to ensure perfect sealing of the hydraulic system. Operating temperature is monitored during extended test cycles, validating the pump’s capacity to maintain performance over time. Flow and pressure curves are recorded and compared with O&K manufacturer data for compliance certification. This strict quality control, conducted by our experienced hydraulics specialists, guarantees that every refurbished main hydraulic pump delivered fully meets original technical characteristics, ensuring optimal performance and maximum reliability on your O&K equipment during the most demanding jobs.

Warranty and After-Sales Service

Warranty Conditions on Refurbished Pumps

All our refurbished O&K main hydraulic pumps come with a 12-month contractual warranty from the delivery date, covering manufacturing defects, material faults, and malfunctions related to the refurbishment process. This warranty applies under normal usage conditions, in compliance with O&K technical specifications and manufacturer maintenance recommendations. Codimatra commits to repairing or replacing free of charge any pump presenting a defect covered by the warranty, including labor and transport costs. The warranty excludes damage resulting from improper use, incorrect installation, hydraulic circuit contamination, or lack of maintenance. To claim warranty, it is necessary to retain the purchase invoice and report any malfunction as soon as possible. Our after-sales service ensures personalized follow-up and maximum responsiveness to minimize downtime of your O&K machines.

Technical Support and Installation

Our team of hydraulics specialists trained in O&K equipment supports you before, during, and after the installation of your refurbished main hydraulic pump. We provide complete technical assistance, including compatibility checks with your machine, mounting recommendations, and commissioning procedures. Our technicians can perform on-site installation and start-up, ensuring assembly conforms to manufacturer guidelines. Technical support also includes training your maintenance teams on O&K hydraulic pump specifics, preventive maintenance advice, and troubleshooting assistance in case of malfunction. Our technical service remains available throughout the warranty period to answer your questions and quickly resolve any technical issues. We maintain a permanent stock of spare parts and a network of technical partners to ensure optimal service continuity throughout France.

How to Order Your O&K Hydraulic Pump?

Identifying Your Machine Model

Accurate identification of your machine model is a crucial step to order the O&K main hydraulic pump adapted to your equipment. Our Codimatra experts assist in this process by analyzing several elements: the serial number of your O&K machine, visible on the manufacturer’s plate attached to the chassis, the exact reference of the faulty hydraulic pump engraved on its data plate, and your machine’s technical specifications (engine power, year of manufacture, hydraulic configuration). For RH6, RH8, RH9, RH20, RH30, RH30D excavators, F105, F106, F106A graders, or L25 loaders, each model has specific hydraulic characteristics. Our technical team has comprehensive knowledge of O&K technical evolutions and can guide you to the exact main hydraulic pump compatible with your machine, avoiding any risk of incompatibility and ensuring optimal performance after installation.

Personalized Quote and Delivery Times

Codimatra offers a free personalized quote service for your O&K main hydraulic pump, provided within 24 hours after your request. Our transparent pricing includes the cost of the refurbished hydraulic pump, specialized packaging fees, and transportation options according to your geographic and timing constraints. Our standard delivery times range from 48 hours to 5 business days depending on stock availability and your location. For urgent needs, we provide a 24-hour express service on our most common references of hydraulic pumps RH6, RH9, and F106A. The quote details our 12-month warranty conditions, return procedures for your old hydraulic pump as a core exchange, and available installation services. Our specialized sales team in O&K hydraulics advises you on the best technical and financial options, including financing possibilities and preferential rates for bulk orders or comprehensive maintenance contracts.

Can’t Find the Part You Need?

If the O&K main hydraulic pump you are looking for is not in our permanent stock of 73 references, our specialized sourcing service puts its expertise at your disposal to locate the exact part quickly. Thanks to our international supplier network and partnership with Europe’s leading O&K machine dismantlers, we can identify and acquire rare or model-specific hydraulic pumps. Our technical team can also study adaptation or modification possibilities of similar hydraulic pumps to meet your specific requirements. For older or less common O&K machine models, we offer a custom refurbishment service of your existing hydraulic pump, including searching for original spare parts and complete restoration according to our quality standards. Contact our technical service at 05 53 96 16 43 or by email at e-commerce@codimatra.com, specifying your exact machine model, the reference of the hydraulic pump sought, and your timing constraints for a personalized response within 48 hours.