Rexroth Construction Cylinder | CDM1MP5/80/45/500 | CDM1MF4/80/45/50 | CDH1 CDH2 Heavy Duty

CDH/CDM Series Heavy-Duty Construction Machinery Cylinders

Product Overview:

The CDH and CDM series are tie-rod and mill-type hydraulic cylinders specifically engineered for construction machinery, metallurgy, and heavy-duty industrial automation. In 2026’s high-intensity work environments, models CDM1MP5/80/45/500 and CDM1MF4/80/45/50 stand as the premier choice for excavators, presses, and industrial power units due to their exceptional pressure resistance and long-life design.

Core Model Specifications:

• CDM1MP5/80/45/500A20B11CKDMWW: $80\text{mm}$ Bore, $45\text{mm}$ Rod, $500\text{mm}$ Stroke. Features MP5 (Rear Clevis) mounting for oscillating power transmission.

• CDM1MF4/80/45/50A10/B1CGDMWY: $80\text{mm}$ Bore, $45\text{mm}$ Rod, $50\text{mm}$ Stroke. Features MF4 (Head Round Flange) mounting for superior axial stability.

Key Technical Advantages:

• Heavy-Duty Construction: CDH1/CDH2 series are optimized for peak pressure cycles and frequent shock loads. The CDM series offers a compact circular body providing massive thrust within a limited footprint.

• Versatile Mounting Options:

  • MP5: Rear single clevis with spherical bearing to automatically compensate for axial misalignment during motion.

  • MF4: Head flange mounting designed for secure attachment to machine plates or structural supports.

• CGD/CKD Advanced Sealing: Utilizes composite micro-fiber and high-performance polyurethane. The low-friction characteristics prevent “stick-slip” at low speeds and eliminate internal bypass leakage under high pressure.

• Precision Chromed Rods: Rods are induction-hardened and hard-chrome plated, offering superior corrosion resistance and high tolerance against mechanical scratches.

• $100\%$ Physical Interchangeability: Manufactured strictly to Rexroth industrial series standards, ensuring $100\%$ compatibility with original parts and reducing maintenance costs for digital factories in 2026.

Detailed Technical Specifications:

• Bore/Rod Size: $80 \text{ mm} / 45 \text{ mm}$.

• Stroke Range: $50\text{mm}$ to $500\text{mm}$.

• Operating Pressure: Nominal $16 \text{ MPa} (160 \text{ bar})$ to $25 \text{ MPa} (250 \text{ bar})$.

• Seal Material: Nitrile (NBR) or Viton (FKM).

• Compatible Mediums: Mineral oils, water-glycols, and synthetic lubricants.