Spare parts ► Poclain ► Poclain Hydraulic parts

Rotor group MS02 MSE02 Piston DIA=24.5 Aftermarket
In Stock
Model: 13577
Sku: 13577
Spare part Poclain MS MSE series: Rotor group MS02 MSE02 Piston DIA=24.5 Aftermarket..
970.20 $
Rotor group MS05 MSE05 Piston DIA=33.3 Aftermarket
In Stock
Model: 13586
Sku: 13586
Spare part Poclain MS MSE series: Rotor group MS05 MSE05 Piston DIA=33.3 Aftermarket..
1 034.90 $
Rotor group MS05 MSE05 Piston DIA=38.5 Aftermarket
In Stock
Model: 13587
Sku: 13587
Spare part Poclain MS MSE series: Rotor group MS05 MSE05 Piston DIA=38.5 Aftermarket..
1 293.60 $
Rotor group MS08 MSE08 Piston DIA=33.3 Aftermarket
In Stock
Model: 13593
Sku: 13593
Spare part Poclain MS MSE series: Rotor group MS08 MSE08 Piston DIA=33.3 Aftermarket..
1 293.60 $
Rotor group MS08 MSE08 Piston DIA=38.5 Aftermarket
In Stock
Model: 13594
Sku: 13594
Spare part Poclain MS MSE series: Rotor group MS08 MSE08 Piston DIA=38.5 Aftermarket..
1 552.30 $
Rotor group MS11 MSE11 Piston DIA=43.2 Aftermarket
In Stock
Model: 13600
Sku: 13600
Spare part Poclain MS MSE series: Rotor group MS11 MSE11 Piston DIA=43.2 Aftermarket..
1 875.70 $
Rotor group MS11 MSE11 Piston DIA=50 Aftermarket
In Stock
Model: 13601
Sku: 13601
Spare part Poclain MS MSE series: Rotor group MS11 MSE11 Piston DIA=50 Aftermarket..
2 102.10 $
Rotor group MS18 MSE18 Piston DIA=50 Aftermarket
In Stock
Model: 13608
Sku: 13608
Spare part Poclain MS MSE series: Rotor group MS18 MSE18 Piston DIA=50 Aftermarket..
2 067.20 $
Rotor group MS18 MSE18 Piston DIA=58 Aftermarket
In Stock
Model: 13614
Sku: 13614
Spare part Poclain MS MSE series: Rotor group MS18 MSE18 Piston DIA=58 Aftermarket..
2 756.30 $
Seal kit MS05 MSE05 2 speed Aftermarket
In Stock
Model: 13592
Sku: 13592
Spare part Poclain MS MSE series: Seal kit MS05 MSE05 2 speed Aftermarket..
291.10 $
Seal kit MS11 MSE11 1 speed Aftermarket
In Stock
Model: 13605
Sku: 13605
Spare part Poclain MS MSE series: Seal kit MS11 MSE11 1 speed Aftermarket..
291.10 $
Seal kit MS18 MSE18 1 speed Aftermarket
In Stock
Model: 13612
Sku: 13612
Spare part Poclain MS MSE series: Seal kit MS18 MSE18 1 speed Aftermarket..
291.10 $
Seal kit MS25 MSE25 1 speed Aftermarket
In Stock
Model: 13618
Sku: 13618
Spare part Poclain MS MSE series: Seal kit MS25 MSE25 1 speed Aftermarket..
388.10 $
Seal kit MS25 MSE25 2 speed Aftermarket
In Stock
Model: 13619
Sku: 13619
Spare part Poclain MS MSE series: Seal kit MS25 MSE25 2 speed Aftermarket..
485.10 $
Seal kit MS35 MSE35 1 speed Aftermarket
In Stock
Model: 13621
Sku: 13621
Spare part Poclain MS MSE series: Seal kit MS35 MSE35 1 speed Aftermarket..
388.10 $
Spare parts ► Poclain ► Poclain Hydraulic parts

Poclain MS and MSE Series Hydraulic Motor Spare Parts

Poclain MS is a leading global manufacturer of drives that plays a central role in powering various industrial systems, equipment and machinery, providing reliable and efficient hydraulic solutions for a different industry need. With over half a century of experience and an innovative approach, Poclain Hydraulics offers a wide range of high-quality to meet the most stringent requirements in various industrial applications:

  • MS02 / MSE02. This series is designed for lightweight where compact size and efficiency are required.
  • MS05 / MSE05. Made for mediums such as mini excavators, concrete pumps, and other medium-sized Poclain spare parts.
  • MS08 / MSE08. They are ideal for medium to heavy-duty such as loaders, drilling rigs, and utility equipment.
  • MS11 / MSE11. Used in heavy industry including crawler excavators, hammers, and other heavy-duty machines.
  • MS18 / MSE18. This series is suitable for large construction and heavy-duty machines such as bulldozers, dump trucks, and specialty vehicles.
  • MS25 / MSE25. Suitable for large machines for heavy industrial work such as quarry excavators and breakers.
  • MS35 / MSE35. The most powerful series is used in the largest and most powerful machines such as large excavators and cranes

Spare parts are critical to ensure reliable operation and long equipment life like motors, valves, manifold, controls, seals, bearings, etc.

MS02-MSE02 motor max 398cc, up to 22 kW

Direct drive motor up to 22 kW ideal for wheel motor or tool drive, from 172 to 398cc, from 400 to 450 bar max (max torque 2500 N.m) and high speed reached at 900 rpm with multispeed conception. The modular design eases the use on all demanding applications for the most demandable market as construction equipment, material handling, agricultural, environment, mining, on rail, marine, and industrial sectors...

Main hydraulic motor components
The hydraulic spare parts are devices that convert the energy of pressurized fluid into mechanical rotational energy. It consists of several key components, each of which performs a specific function to make the work:

  1. Case. Provides housing and support for the internal components.
  2. Pump. Pressurizes the hydraulic fluid.
  3. Working element. Converts the hydraulic energy into mechanical motion.
  4. Manifold.. Controls the flow of hydraulic fluid to different parts of the system.
  5. Seals. Prevent leakage of hydraulic fluid and maintain pressure.
  6. Output shaft. Transfers the mechanical energy to the external system.
  7. Idler Gear. Transfers motion between rotating components.
  8. Driven Gear. Receives motion from the driving gear and transfers it to other parts.
  9. Vanes. Direct fluid flow within the motor.
  10. Cylinder Block. Houses the rotor and vanes, guiding their movement.
  11. Rotor. Converts hydraulic pressure into rotational motion.
  12. Stator. Provides a stationary surface against which the rotor operates.

Each of these components of the Poclain MS plays an important role in the operation, ensuring its efficiency in various industrial and technical applications.
Seal kits (repair kits)
It plays a key role in reliability and durability by preventing leakage and protecting internal. Kits are sets of elements that need to be replaced.

The MS and MSE Series utilize various types to ensure leak tightness and optimum performance:

  1. Oil. They prevent leakage through the connections and shafts. They protect the inside from contaminants and maintain proper inside.
  2. Rubber rings (o-rings). Rubber rings are used for connections and gaskets. They provide a secure connection between the various details, preventing leakage.
  3. Piston peals. They provide a tight connection between the piston and cylinder, allowing efficient conversion into mechanical energy.

Hydraulic spare parts are made from a variety of materials, including rubber (e.g., nitrite, fluorocarbon), polyurethane, polytetrafluoroethylene (PTFE), and other specialized polymers. Material selection depends on operating conditions, chemical compatibility, and required temperature resistance.
Its characteristics include size, shape, stiffness level, coefficient of friction, and abrasion resistance. Diagrams are provided in the product cards, allowing you to accurately select the correct kit for your specific product.
Poclain spare parts are critical to longevity and reliability. Properly selected and quality prevents leakage, protects against contaminants entering, and reduces tears. This, in turn, increases longevity.

A wide range of kits are available for MS and MSE single and two-speed. Each kit includes the optimum set. Benefits include:

  • Replacement details from manufacturer Poclain Hydraulics, are guaranteed to meet the highest standards of quality.
  • A comprehensive approach to replacement, ensuring complete sealing.
  • Optimal cost and ease of replacement, increasing availability and reducing downtime

Selecting the right repair kit Poclain for your specific product helps ensure reliability, extends service life and reduces operating costs by preventing leaks, and damage.


It plays a key role in the MS and MSE series. It is the stationary inside which the working elements such as rotors are located. The role of the stator is to create chambers through which pressurized flows, causing the working to rotate or move.

The Poclain stator for MS and MSE series has certain features that determine their performance:

  • Chamber geometry. This determines the shape and size of the chambers through which they pass. This affects the creation and flow velocity, which in turn determines the torque and power.
  • Materials. They are usually made of strong materials such as cast iron or steel. This ensures durability and resistance to temperatures, which is important for reliable operation.
  • Precision manufacturing. Precision manufacturing uniform distribution and minimizes energy loss for optimum

To maintain efficiency, they must be properly maintained as necessary:

  • Regular condition inspection. It is recommended that the stator be inspected regularly, for damage, or malfunctions. Early detection of problems allows timely action to be taken.
  • Replace as needed. If the stator is found to be worn or damaged, it should be displaced with a new licence manufacturer to avoid reduced performance and risk of failure.
  • Follow the manufacturer's recommendations. When replacing details for selecting and installing the new component should be followed

Poclain stator for MS-MSE is typically cylindrical with internal chambers or channels. They are made of strength alloys such as cast iron or steel with a durable and precise surface finish.

Fixed and adjustable offset types for distinguished:

  • Fixed offset. They have a constant chamber volume, which is a constant flow rate and torque at a given pressure.
  • Adjustable offset. Have the ability to change chamber volume to adjust flow and torque based on operating conditions.

Different diameters allow to be customized to meet specific needs and operating conditions:

  1. Smaller diameters. Provide rotational speed and lower torque, suitable for high-speed.
  2. Larger diameters. Provide higher torque and lower speed, which is suitable for applications with traction requirements.

The selection of a specific stator depends on the model of your motor, it cannot be changed to increase power.


It is one of the main components responsible for generating torque by converting the energy of the pressurized fluid into mechanical rotation. The interacts with the pressurized fluid, which causes rotation and provides the necessary power to operate the machinery.

The Poclain rotor for MS-MSE has the following features that affect operation:

  1. Shape and size of the blades. It determines the number and shape of the working elements (blades or pistons) that interact with the fluid being conveyed. This affects the torque.
  2. Materials and coatings. They are made of strong materials such as steel or aluminum alloys to withstand. Some of them may have special coatings to improve lubrication and reduce friction.
  3. Precision manufacturing. The quality of manufacturing affects its uniformity and balance, which is important to minimize vibration and noise when the motor is running.

To prevent premature, it is recommended to:

  1. Regular condition checks. Carry out regular inspections, damage, or malfunctions.
  2. Adhere to lubrication recommendations. Ensure it is properly lubricated according to the manufacturer's recommendations to reduce friction.
  3. Replace as needed. If its damage is detected, displace it promptly with a new original detail

Poclain rotor have different features depending on the type (single-speed or two-speed) and the specific requirements. They can be designed as blades (with internal gear or vane with piston distributor).

The following types can be distinguished among MS-MSE:

  1. Single-speed. Have one fixed rotational speed, making them suitable for applications with constant rotational speed and torque.
  2. Two-speed. Have the ability to vary the rotational speed depending on the needs. These rotors usually have two preset speeds, allowing them to be effectively adapted to different operating conditions.

The selection of a particular type depends on the power, speed, and efficiency requirements of the specific MS-MSE.

Problems and solutions in exploitation

A variety of problems occur in the rotor group Poclain, but many of them can be successfully diagnosed and corrected using appropriate methods. Listed below are some common problems and how to diagnose and correct them:

  1. Leakage of the Poclain MSE. Visual inspection to look for areas of leakage. Replace connections.
  2. Increased noise or vibration. Inspect the balance or blades. Displace bearings.
  3. Loss of power. Check pressure. It's an adjustment.
  4. Uneven rotation or stalling. Check level and distribution.
  5. Overheating. Inspecting the fluid level of the spare parts for hydraulic motor. Eliminate the cause of overheating (insufficient cooling, pressure). 

To effectively diagnose and solve problems with the rotor group Poclain, it is important to have a basic understanding of their operation and to follow regular maintenance. 

Maintenance and diagnosis of hydraulic components

Repair kit Poclain requires regular maintenance to increase reliability and prevent malfunctions. The following are the main aspects and diagnosis:

  1. Schedule. Determining the frequency of inspection and replacement according to the manufacturer's recommendations. Establishing a maintenance schedule based on the intensity of operation.
    Frequency and scope of work. Monthly or quarterly inspection of the condition. Replacement seals, filters, and other details following the manufacturer's recommendations.
  2. Diagnostic and troubleshooting methods. Visual inspection for leaks, wear, and damage. Use of measuring tools to monitor, flow, and other operating parameters.
  3. Visual inspection and measurement testing of the spare parts for hydraulic motor. Checking the condition of connections, seals, and systems. Measure, flow, and temperature at various points.
  4. Analyzing operating parameters indicators. Evaluating concerning energy consumption, rate of work, and other factors. Comparing current performance to recommended standards to identify possible malfunctions or potential problems.
  5. Typical malfunctions and how to correct them. Leaks: replacing seals or repairing connections. Increased noise or vibration: balance. Overheating: check the cooling system and filters.
  6. Signs of wear and damage. Loss of pressure. Leaks or noise. Uneven rotation or operation.
  7. Methods of rebuilding. Replacing with new original components. Adjustment and balancing of working elements.
  8. Recommendations to prevent premature failure. Following a regular schedule. Use of quality fluid and details. Training operators in the proper use and care.
Effective maintenance and diagnosis of the Poclain MSE maintain the longevity of the system and prevent unscheduled downtime and repairs.