CPM Hydraulic Motors

Hydraulic Motors by Hydromot are characterised by their high quality and reasonable price. Our CPM hydraulic motors are compatible with the hydraulic motors of e.g. Danfoss, Eaton, White, Bosch-Rexroth etc.
For further information please visit our guide.

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CPM Hydraulic Motor FAQ

 

What is a CPM Hydraulic Motor?

CPM hydraulic motors are drum valve motors known for their compact design, making them ideal for applications with limited space. They feature an internal check valve, allowing operation without a drain line. Additionally, they are equipped with a high-pressure shaft seal that can withstand pressures up to 150 bar as standard.

 

What are the main features of CPM hydraulic motors

  • Drum valve integrated in the shaft
  • Compact design
  • Suitable for tight spaces
  • Internal check valve
  • Optional use of a drain line
  • High-pressure shaft seal (standard up to 150 bar)

 

What are the mounting options for CPM motors?

CPM motors offer various mounting options, including:

  • Oval flange with 2 holes (SAE A)
  • Magneto flange with 4 holes
  • Square flange with 4 bolts
  • Wheel flange

 

What types of output shafts are available for CPM motors?

CPM motors offer a range of output shafts:

  • Cylindrical shafts with keys in various diameters (e.g., 25 mm, 32 mm, 1 inch, 1 ¼ inch)
  • Splined shafts (e.g., SAE 6B, 14 teeth, DP 12/24)
  • Tapered shafts with keys (e.g., 1:10, 1:8 SAE J 501)

 

How do I calculate the required torque for my application?

The required torque for any hydraulic motor can be calculated using the following formula: M = (TE x rm) / (N x i x ηm) Where:

  • M: Motor torque (daNm or in-lb)
  • TE: Total tractive effort (daN or lbs)
  • rm: Rolling radius of the wheel (m or in)
  • N: Number of motors
  • i: Gear ratio between the motor and wheels
  • ηm: Mechanical efficiency of the transmission

 

What is the maximum return pressure for CPM motors?

The maximum return pressure for CPM motors depends on whether a drain line is used:

  • Without a drain line: Refer to the technical data for the specific motor model.
  • With a drain line: Refer to the technical data for the specific motor model.

 

What are the advantages of using a drain line with a CPM motor?

Using a drain line offers several benefits:

  • Improved cooling by dissipating heat generated during operation.
  • Extended seal life by reducing pressure and wear on the seals.

 

How do I choose the right CPM motor for my application?

When selecting the appropriate CPM motor, consider the following factors:

  • Required torque and speed: Determined by the needs of your application.
  • Mounting and connection options: Choose according to your system configuration.
  • Output shaft: Select the appropriate shaft for your load and connection.
  • Duty cycle: Consider continuous, intermittent, or peak operating conditions.
  • Environmental factors: Account for temperature, pressure, and potential contaminants.
By analyzing these factors and referencing the technical data in the CPM documentation, you can select the optimal motor for your specific requirements.