CDT3 Series Hydraulic Cylinder | 63CDD 63JJ CDT3MT1

Genlu Hydraulic’s meticulously manufactured CDT3 Series Hydraulic Cylinders are compact, tie-rod style cylinders specifically engineered for industrial automation, machine tools, and heavy-duty equipment. This series is fully compatible with Bosch Rexroth standard specifications, including diverse mounting configurations (such as CDT3MT1 flange-mounted, CDT3ME5) and bore configurations. Units such as the CDT3MT1/100*56/950 (100mm bore, 56mm rod, 950mm stroke) and custom configurations like 63CDDHMIRN34MC300.00 demonstrate Genlu’s expertise in precision fluid control. Serving as the core of industrial actuators, Genlu guarantees 100% Drop-in Interchangeability with original Rexroth products across mounting dimensions, piston rod threads, cushioning structures, and seal performance. Backed by 100% Simulation Load Testing, each cylinder undergoes full-stroke reciprocating tests and static seal validation before dispatch, ensuring precise, stable, linear actuation in continuous production lines.

Technical Specifications 

• Product Series: CDT3 Series Industrial Tie-Rod Hydraulic Cylinder

• Representative Configurations:

  • Bore: 63mm / 100mm

  • Rod Diameter: 56mm (for CDT3MT1/100/56)

  • Stroke: 950mm / Custom 300mm / 150mm

• Rated Operating Pressure: 160 bar (16 MPa / 2320 psi)

• Max Test Pressure: 240 bar (24 MPa / 3480 psi)

• Seal Materials: Industrial-grade Polyurethane (PU) + Fluoroelastomer (FKM), compatible with mineral oil and water-glycol media

• Mounting Styles: MT1 (Front Flange), ME5 (Tie-rod extension)

• Cushioning: Full-stroke adjustable hydraulic cushioning to mitigate end-of-stroke impact

Key Technical Advantages:

• Precision Guiding & Support: The interface between the piston and the guide bushing utilizes wear-resistant non-metallic support rings. This dramatically reduces side-loading during stroke, preventing cylinder bore scoring and ensuring high linear accuracy during frequent reciprocating cycles.

• Industrial-Grade Multi-Stage Sealing: Piston rod sealing features imported double-lip wiper seals combined with dust rings, while piston sealing employs low-friction composite seal rings. This combination ensures zero internal leakage at 160 bar and minimal breakaway friction during low-speed “creep” operations.

• High-Carbon Alloy Rod: The piston rod is crafted from 45# tempered steel, subjected to induction hardening and high-precision chrome plating (layer thickness > 30μm). This provides exceptional hardness, superior corrosion resistance, and scratch protection.

• Full-Stroke Adjustable Cushioning: Integrated needle valves on both ends allow for precise adjustment of the cushioning effect. By tuning the valve, you can precisely control the deceleration phase at the end of the stroke, eliminating mechanical shocks caused by load inertia and exponentially extending the service life of the rod and structural components.

Application Areas:

• Industrial Automation Lines: Gripping mechanisms for robotic arms and clamping drives for jigs and fixtures.

• Precision Machine Tools: Slide drives for pressure-forming machines and motion mechanisms for precision transfer lines.

• Construction & Municipal Engineering: Gate control mechanisms and lift platform power units.

• Heavy-Duty Hydraulic Equipment: Execution terminals for various custom industrial presses.

Expert Maintenance Tips:

• Coaxiality Verification: During installation, ensure the piston rod axis is perfectly parallel to the direction of load motion. Any mounting eccentricity causes asymmetric loading on the piston rod, leading to premature guide bushing wear or seal leakage.

• Piston Rod Maintenance: Never apply grease to the piston rod surface, as it will attract dust and transport abrasive particles into the cylinder, damaging the lip seals. In high-dust environments, consider installing a protective bellows/dust boot.

• Air Bleeding Procedure: After initial commissioning or system maintenance, loosen the air bleed screws at the cylinder ends. Operate the cylinder back and forth at low pressure until the discharged fluid is free of visible air bubbles, preventing cavitation-induced damage to the internal bore.