CMER Hydraulic Motors

The CMER hydraulic motor converts hydraulic energy (pressure and fluid flow) into mechanical rotational energy. It is used in various applications requiring rotary motion, such as industrial equipment or mobile machinery. The CMER series includes different models that vary in displacement and performance ratings.

Models range from CMER 125 to CMER 750, where the number indicates the approximate displacement in cm³/rev. For example: CMER 125 – 118 cm³/rev, CMER 750 – 745 cm³/rev. A larger displacement means more fluid processed per revolution and potentially higher torque at the same speed.

• Continuous working: Uninterrupted operation, basis for most performance specifications.
• Intermittent operation: Higher values than continuous operation, max. 6 s per minute.
• Peak load rating: Maximum values, max. 0.6 s per minute.

These definitions assist in correct motor selection and help prevent overloading.

• F4: Oval flange 4-bolt, SAE A
• F6: Oval flange 6-bolt, SAE A
• W: Wheel mount

These mounting options allow flexible integration into various machine designs.

• CO: Ø31.75 mm (1¼") cylindrical with keyway
• C: Ø32 mm cylindrical with keyway
• SH: Ø31.75 mm (1¼") splined, 14 teeth, DP 12/24
• K: Tapered 1:8 with keyway
• CO1: Ø25.4 mm (1") cylindrical with keyway
• C25: Ø25 mm cylindrical with keyway
• S: Ø25.32 mm splined (SAE 6B)

• B: G 1/2" BSPP
• N: 1/2-14 NPTF
• U: 7/8-14 UNF
• F: Manifold mount (only with F6 flange)

These options ensure compatibility with various hydraulic systems.

Weight and length depend on the model and flange type. Example: CMER 125 with F4/F6 – 10.6 kg, length 157.0 mm. With wheel mount (W) – 12.0 kg, length 119.0 mm (L1: 10.2 mm). As displacement increases, weight and dimensions also increase.

The maximum radial shaft load is 450 daN per bearing. These values are based on a B10 bearing life at 300 rpm. Exceeding this limit significantly increases the risk of shaft breakage. Proper design is essential for motor longevity and reliability.