Product Description

 

 

Hydraulic cylinders, mill type CDH

  • Rexroth standard
  • Series H1
  • Component series 3X
  • Nominal pressure 250 bar
  • Piston Ø 40 … 320 mm
  • Piston rod Ø 22 … 220 mm
  • Stroke length up to 6000 m
  • Ordering code

    01

    02

    03

     

    04

     

    05

     

    06

    07

    08

     

    09

    10

    11

    12

    13

    14

    15

    16

    CD

    H1

     

    /

     

    /

     

    /

     

    A

    3X

    /

                   

    01

    Single rod cylinder

    CD

    02

    Series

    H1

    Types of mounting

    03

    Swivel eye at cylinder base

    MP31)

    Self-aligning clevis at cylinder base

    MP5

    Round flange at the cylinder head

    MF3

    Round flange at the cylinder base

    MF4

    Trunnion

    MT42)

    Foot mounting

    MS2

    04

    Piston Ø (ØAL) 40 … 320 mm

    ...

    05

    Piston rod Ø (ØMM) 22 … 220 mm

    ...

    06

    Stroke length in mm3)

    ...

    Design principle

    07

    Head and base flanged

    A

    08

    Component series 30 ... 39 (30 ... 39: unchanged installation and connection dimensions)

    3X

    Line connection / version

    09

    According to ISO 1179-1 (pipe thread ISO 228-1)

    B

    According to ISO 9974-1 (metric thread ISO 261)

    M

    Flange connection according to ISO 6162-2 tab. 2 type 1 (≙ SAE 6000 PSI)

    D4; 9)

    Flange connection according to ISO 6164 tab. 2

    H4)

    according to ISO 1179-1 (pipe thread ISO 228-1) with flat pipe flange

    C31)

    For directional and high-response valves

    Subplate NG6

    P4; 5)

    Subplate NG10

    T4; 6)

    Subplate NG16

    U4; 7)

    Subplate NG25

    V4; 8)

    For SL and SV valves

    Subplate NG6

    A4; 5; 15)

    Subplate NG10

    E4; 6; 15)

    Subplate NG20

    L4; 7; 15)

    Subplate NG30

    N4; 8; 15)

    Line connection/position at cylinder head

    10

    View to piston rod30)

     

    1

    2

    3

    4

    Line connection/position at cylinder base

    11

    View to piston rod30)

     

    1

    234)

    3

    434)

    Piston rod design

    12

    Hard chromium-plated

    C

    Hardened and hard chromium-plated

    H12)

    Nickel-plated and hard chromium-plated

    N19)

    Piston rod end

    13

    Thread for swivel head CGAS

    A

    Thread for swivel head CGA, CGAK, plain clevis CSA

    G13)

    With mounted swivel head CGAS

    S

    With mounted swivel head CGA

    L13)

    With mounted swivel head CGAK

    M13)

    With mounted swivel head CSA

    N1)

    End position cushioning

    14

    Without end position cushioning

    U

    Both sides, self-adjusting

    D1)

    Both sides, adjustable

    E

    Seal design

    15

    For mineral oil HL, HLP and oil-in-water emulsion HFA

    Standard seal system

    M

    Standard seal system with guide rings

    L

    Reduced friction
    heavy industry

    R

    For mineral oil HL, HLP, oil-in-water emulsion HFA and water glycol HFC

    Standard seal system HFC

    G

    Servo quality/reduced friction

    T

    Chevron seal kits

    A

    For HDFR phosphate ester and HFDU polyol ester

    Servo quality/reduced friction

    S

    Standard seal system FKM

    V

    Chevron seal kits

    B

    Option

    16

    Additional options, fill fields for additional options

    Z

    Without additional options, do not fill fields for additional options

    W

    Additional options

         

    Fields for additional options

         

    17

    18

    19

    20

    21

    22

    23

    24

     

    Z

                     

    17

    Without inductive proximity switches

    W

    Inductive proximity switches without mating connector - separate order

    E37)

    18

    Without additional guide rings

    W

    Additional guide rings

    F10; 28)

    19

    Without measuring coupling

    W

    Measuring coupling, on both sides

    A

    20

    Standard conical grease nipple, DIN 71412 Form A

    W

    Spherical bearing, maintenance-free

    14; 35)

    Flanged grease nipple, DIN 3404 Form A

    B

    21

    Without piston rod extension

    W

    Piston rod extension "LY", specify in mm in plain text

    Y

    22

    Priming class CP3

    W

    Painting class CP4

    B21)

    Painting class CP5

    L21)

    Painting class CP6

    U21)

    Painting class CP7

    E21)

    23

    Without oil filling

    W

    With oil filling

    F

    24

    Without test certificate

    W

    With acceptance test certificate 3.1 based on EN 15714

    C

    1) Only piston Ø 40 … 200 mm
    2) Trunnion position freely selectable. When ordering, always specify the "XV" dimensions in the plain text in mm
    3) For max. available stroke length see Technical data and for admissible stroke length (according to the kinking calculation) see Project plHangZhou information.
    4) Not possible with MF4
    5) Piston Ø 40 … 80 mm, only position 11, subplates only possible in combination with line connection "B" at the head
    6) Piston Ø 63 … 200 mm, only position 11, subplates only possible in combination with line connection "B" at the head
    7) Piston Ø 125 … 200 mm, only position 11, subplates only possible in combination with line connection "B" at the head
    8) Only piston Ø 160 … 200 mm, only position 11, subplates only possible in combination with line connection "B" at the head
    9) Only piston Ø 80 … 320 mm
    10) Seal designs A, B not possible; piston Ø 220 … 320 mm standard
    12) Only piston rod Ø 22 … 140 mm
    13) Not with piston Ø 320 mm
    14) Not possible with piston rod end "N"
    15) Subplates for SL and SV valves (isolator valves)
    Please note: Seal designs T, G, L, R, S and V are not designed for the static holding function!
    19) Only piston rod Ø 45 … 160 mm
    21) Specify RAL color in the plain text
    28) With seal design "L" standard
    30) All graphical representations in the data sheet show position 1
    31) With MS2, only position 11 is possible
    34) With MF4 and line connection B, M or C not possible
    35) Not possible with MP3
    37) Min. stroke length = 20 mm
     
      Order example:
      CDH1MP5/100/56/300A3X/B11CADMW
      CDH1MP5/100/56/300A3X/B11CADMZ EWABWWWW

Certification: CE, ISO9001
Pressure: High Pressure
Work Temperature: High Temperature
Customization:
Available

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hydraulic cylinder

How do hydraulic cylinders handle the challenges of precise positioning and control?

Hydraulic cylinders are designed to handle the challenges of precise positioning and control with a combination of engineering principles and advanced control systems. These challenges often arise in applications where accurate and controlled movements are required, such as in industrial automation, construction, and material handling. Here's a detailed explanation of how hydraulic cylinders overcome these challenges:

1. Fluid Power Control:

- Hydraulic cylinders utilize fluid power control to achieve precise positioning and control. The hydraulic system consists of a hydraulic pump, control valves, and hydraulic fluid. By regulating the flow of hydraulic fluid into and out of the cylinder, operators can control the speed, direction, and force exerted by the cylinder. The fluid power control allows for smooth and accurate movements, enabling precise positioning of the hydraulic cylinder and the attached load.

2. Control Valves:

- Control valves play a crucial role in handling the challenges of precise positioning and control. These valves are responsible for directing the flow of hydraulic fluid within the system. They can be manually operated or electronically controlled. Control valves allow operators to adjust the flow rate of the hydraulic fluid, controlling the speed of the cylinder's movement. By modulating the flow, operators can achieve fine control over the positioning of the hydraulic cylinder, enabling precise and accurate movements.

3. Proportional Control:

- Hydraulic cylinders can be equipped with proportional control systems, which offer enhanced precision in positioning and control. Proportional control systems utilize electronic feedback and control algorithms to precisely regulate the flow and pressure of the hydraulic fluid. These systems provide accurate and proportional control over the movement of the hydraulic cylinder, allowing for precise positioning at various points along its stroke length. Proportional control enhances the cylinder's ability to handle complex tasks that require precise movements and control.

4. Position Feedback Sensors:

- To achieve precise positioning, hydraulic cylinders often incorporate position feedback sensors. These sensors provide real-time information about the position of the cylinder's piston rod. Common types of position feedback sensors include potentiometers, linear variable differential transformers (LVDTs), and magnetostrictive sensors. By continuously monitoring the position, the feedback sensors enable closed-loop control, allowing for accurate positioning and control of the hydraulic cylinder. The feedback information is used to adjust the flow of hydraulic fluid to achieve the desired position accurately.

5. Servo Control Systems:

- Advanced hydraulic systems employ servo control systems to handle the challenges of precise positioning and control. Servo control systems combine electronic control, position feedback sensors, and proportional control valves to achieve high levels of accuracy and responsiveness. The servo control system continuously compares the desired position with the actual position of the hydraulic cylinder and adjusts the flow of hydraulic fluid to minimize any positional error. This closed-loop control mechanism enables the hydraulic cylinder to maintain precise positioning and control, even under varying loads or external disturbances.

6. Integrated Automation:

- Hydraulic cylinders can be integrated into automated systems to achieve precise positioning and control. In such setups, the hydraulic cylinders are controlled by programmable logic controllers (PLCs) or other automation controllers. These controllers receive input signals from various sensors and use pre-programmed logic to command the hydraulic cylinder's movements. The integration of hydraulic cylinders into automated systems allows for precise and repeatable positioning and control, enabling complex sequences of movements to be executed with high accuracy.

7. Advanced Control Algorithms:

- Advancements in control algorithms have also contributed to the precise positioning and control of hydraulic cylinders. These algorithms, such as PID (Proportional-Integral-Derivative) control, adaptive control, and model-based control, enable sophisticated control strategies to be implemented. These algorithms consider factors such as load variations, system dynamics, and environmental conditions to optimize the control of hydraulic cylinders. By employing advanced control algorithms, hydraulic cylinders can compensate for disturbances and achieve precise positioning and control over a wide range of operating conditions.

In summary, hydraulic cylinders overcome the challenges of precise positioning and control through the use of fluid power control, control valves, proportional control, position feedback sensors, servo control systems, integrated automation, and advanced control algorithms. By combining these elements, hydraulic cylinders can achieve accurate and controlled movements, enabling precise positioning and control in various applications. These capabilities are essential for industries that require high precision and repeatability in their operations, such as industrial automation, robotics, and material handling.

hydraulic cylinder

Handling the Challenges of Minimizing Fluid Leaks and Contamination in Hydraulic Cylinders

Hydraulic cylinders face challenges when it comes to minimizing fluid leaks and contamination, as these issues can impact the performance, reliability, and lifespan of the system. However, there are several measures and design considerations that help address these challenges effectively. Let's explore how hydraulic cylinders handle the challenges of minimizing fluid leaks and contamination:

  1. Sealing Systems: Hydraulic cylinders employ advanced sealing systems to prevent fluid leaks. These systems typically include various types of seals, such as piston seals, rod seals, and wiper seals. The seals are designed to create a tight and reliable barrier between the moving components of the cylinder and the external environment, minimizing the risk of fluid leakage.
  2. Seal Material Selection: The choice of seal materials is crucial in minimizing fluid leaks and contamination. Hydraulic cylinder manufacturers carefully select seal materials that are compatible with the hydraulic fluid used and resistant to wear, abrasion, and chemical degradation. This ensures the longevity and effectiveness of the seals, reducing the likelihood of leaks or premature seal failure.
  3. Proper Installation and Maintenance: Ensuring proper installation and regular maintenance of hydraulic cylinders is essential for minimizing fluid leaks and contamination. During installation, attention should be given to proper alignment, torqueing of bolts, and adherence to recommended procedures. Regular maintenance includes inspecting seals, replacing worn-out components, and addressing any signs of leakage promptly. Proper maintenance practices help identify and rectify issues before they escalate and cause significant problems.
  4. Contamination Control: Hydraulic cylinders incorporate measures to control contamination and maintain fluid cleanliness. This includes the use of filtration systems, such as in-line filters, to remove particles and contaminants from the hydraulic fluid. Additionally, hydraulic reservoirs often have breathers and desiccant filters to prevent moisture and airborne contaminants from entering the system. By controlling contamination, hydraulic cylinders minimize the risk of damage to internal components and maintain optimal system performance.
  5. Environmental Protection: Hydraulic cylinders may be equipped with protective features to safeguard against external contaminants. For example, bellows or protective boots can be installed to shield the rod and seals from debris, dirt, or moisture present in the operating environment. These protective measures help extend the life of the seals and enhance the overall reliability of the hydraulic cylinder.

In summary, hydraulic cylinders employ sealing systems, appropriate seal materials, proper installation and maintenance practices, contamination control measures, and environmental protection features to handle the challenges of minimizing fluid leaks and contamination. By implementing these measures, manufacturers can ensure reliable and long-lasting hydraulic cylinder performance, minimize the risk of fluid leakage, and maintain the cleanliness of the hydraulic system.

hydraulic cylinder

Can you provide real-world examples of machinery that heavily rely on hydraulic cylinders?

Hydraulic cylinders are widely used in various industries and applications due to their ability to provide powerful and precise linear motion. They play a crucial role in enabling the operation of heavy machinery that requires controlled force and movement. Here are some real-world examples of machinery that heavily rely on hydraulic cylinders:

1. Construction Equipment:

- Hydraulic cylinders are extensively used in construction machinery, such as excavators, bulldozers, loaders, and cranes. These machines rely on hydraulic cylinders to perform tasks like lifting heavy loads, extending and retracting booms, tilting buckets, and controlling the movement of various components. Hydraulic cylinders provide the power and precision required to handle the demanding conditions and heavy loads encountered in construction projects.

2. Agricultural Machinery:

- Many agricultural machines, including tractors, combine harvesters, and sprayers, utilize hydraulic cylinders for critical operations. Hydraulic cylinders are used to control the movement of attachments, such as front loaders, backhoes, and plows. They enable functions like lifting and lowering implements, adjusting cutting heights, and controlling the positioning of harvesting equipment. Hydraulic cylinders enhance efficiency and productivity in agricultural operations.

3. Material Handling Equipment:

- Hydraulic cylinders are integral components of material handling equipment, such as forklifts, pallet jacks, and cranes. These machines rely on hydraulic cylinders to lift and lower loads, tilt platforms or forks, and control the movement of lifting mechanisms. Hydraulic cylinders provide the necessary strength and precision to handle heavy loads and ensure safe and efficient material handling operations.

4. Industrial Machinery:

- Various industrial machinery and equipment heavily rely on hydraulic cylinders for critical functions. Examples include hydraulic presses, injection molding machines, metal-forming machines, and hydraulic-powered robots. Hydraulic cylinders enable precise control of force and movement in these applications, allowing for accurate shaping, pressing, and assembly processes.

5. Mining Equipment:

- Hydraulic cylinders are extensively used in mining machinery and equipment. Underground mining machines, such as continuous miners and longwall shearers, utilize hydraulic cylinders for cutting, shearing, and roof support operations. Surface mining equipment, including hydraulic shovels, draglines, and haul trucks, rely on hydraulic cylinders for tasks like bucket movement, boom extension, and vehicle suspension.

6. Automotive Industry:

- The automotive industry extensively utilizes hydraulic cylinders in various applications. Hydraulic cylinders are employed in vehicle suspension systems, power steering systems, convertible tops, and hydraulic brake systems. They enable smooth and controlled movement, precise steering, and efficient braking in automobiles.

7. Aerospace and Aviation:

- Hydraulic cylinders are utilized in aerospace and aviation applications, such as aircraft landing gear systems, wing flaps, and cargo handling equipment. Hydraulic cylinders provide the necessary force and control for extending and retracting landing gear, adjusting wing flaps, and operating cargo doors, ensuring safe and reliable aircraft operations.

8. Marine and Offshore Industry:

- Hydraulic cylinders are essential components in marine and offshore equipment, including ship cranes, winches, and hydraulic-powered anchor systems. They enable lifting, lowering, and positioning of heavy loads, as well as the control of various marine equipment.

These are just a few examples of machinery and industries that heavily rely on hydraulic cylinders. The versatility, power, and precise control offered by hydraulic cylinders make them indispensable in a wide range of applications, where controlled linear motion and force are essential.

China Standard Hydraulic Cylinder, Mill Type Design Cdh1 Cgh1 Csh1 Cdh2 Cgh2 Csh2 High Temperature and High Pressure, Metallurgical Cylinder   with high quality China Standard Hydraulic Cylinder, Mill Type Design Cdh1 Cgh1 Csh1 Cdh2 Cgh2 Csh2 High Temperature and High Pressure, Metallurgical Cylinder   with high quality
editor by CX 2023-10-31