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Rexroth CDT3ME5 63 45 370Z1X B11CHDTWW Hydraulic Tie-Rod Cylinder
Overview
The Rexroth CDT3ME5 63 45 370Z1X B11CHDTWW is a high-performance hydraulic tie-rod cylinder from the Bosch Rexroth CDT3 series. As a CD (differential cylinder) in tie-rod design, it consistently converts hydraulic energy into efficient linear motion. This model is part of the robust "Z" series and is built to strict ISO 6020, DIN 24554, and NF/ISO 6020 standards, ensuring global mechanical compatibility and straightforward integration into existing hydraulic systems.
Designed to offer a service life up to five times longer than conventional cylinders, it is an ideal choice for industrial environments that demand both durability and cost-effectiveness.
Technical Features
Robust Tie-Rod Construction & Integrated Guide Socket - The cylinder uses a lightweight yet strong tie-rod construction. Its key feature is the precisely machined, one-piece cylinder head that integrates the piston rod guide socket. This design simplifies maintenance and significantly extends service life.
ME5 Mounting Style with Bottom Flange - The "ME5" mounting type (Rectangular flange on cylinder head) offers a secure axial foot-mounted installation.
Compact Specifications (63 mm Bore, 45 mm Rod, 370 mm Stroke) - The cylinder has a 63 mm piston diameter and a 45 mm piston rod diameter with a 370 mm stroke. The CDT3 series supports piston diameters up to 200 mm and stroke lengths up to 3000 mm.
Reliable Pressure Ratings - Designed for a nominal operating pressure of 160 bar. For static loads, it can withstand a maximum working pressure of 210 bar (static test pressure 240 bar), ensuring reliable performance in diverse conditions.
Hard Chrome-Plated Piston Rod - The piston rod features hard chrome plating ("C" type) which provides excellent wear resistance, high surface hardness, and robust protection against corrosion to ensure a long service life.
Adjustable End-Position Cushioning on Both Sides - The cylinder is equipped with adjustable end cushioning (Type D) on both ends. This progressive damping system allows for controlled deceleration, reducing impact forces and eliminating shock at the end of the stroke.
Comprehensive Corrosion Protection (R1 Class) - Features an R1 corrosion protection class, proven by a 240-hour salt spray test (SST per DIN EN ISO 9227) and a 240-hour condensation test (per DIN EN ISO 6270-2), with a minimum dry film thickness of 40 μm in Gentian blue (RAL 5010).
Standardized Porting & Sealing - The ports are ISO 1179-1 (B port type) with G 1 1/2 threads. The standard sealing system (Type T) is compatible with mineral oils HL, HLP, and HFA emulsions.
Low Minimum Operating Pressure - For a single-rod differential cylinder like this, a minimum pressure of 10 bar is recommended for no-load operation and 20 bar for loaded conditions to ensure proper functionality.
Patented Safety Venting Valve - Includes a patented safety venting valve for easy and safe bleeding of air from the hydraulic system, preventing potential damage from air pockets.
Wide Operating Conditions - Operating temperature range: -40°C to +93°C. Speed: Up to 0.3 m/s.
Fluid Cleanliness Requirement - The maximum permissible contamination level of the hydraulic fluid must be maintained at ISO 4406 (c) class 20/18/15 to ensure proper operation and extend service life. Effective filtration is essential to prevent malfunctions and extend component life.
Key Functionalities
Linear Force Conversion & Motion - The primary function is to convert hydraulic energy (pressure and flow into mechanical linear force and motion). As a differential cylinder with a larger cap-side piston area than rod-side annular area, it achieves faster extension speeds, optimizing cycle times in certain circuits.
Precise Position Control - The combination of precision engineering, a hard chrome-plated rod, and adjustable cushioning allows for accurate and controlled movement of the piston, making it suitable for positioning heavy loads with precision.
Smooth Deceleration via Adjustable Cushioning - The double-sided adjustable cushioning system automatically decelerates the piston as it approaches the stroke end, reducing shock, vibration, and noise to protect equipment in high-velocity applications.
High Reliability & Long Service Life - The robust tie-rod design, heavy-duty integrated piston rod guide, and R1 corrosion-resistant finish ensure high reliability and minimal maintenance requirements.
Easy Integration & Maintenance - Conforming to international ISO standards, the cylinder can be easily integrated into existing hydraulic systems. The integrated guide socket and standardized sealing system simplify maintenance tasks.
Application Sectors
The Rexroth CDT3ME5 63 45 370Z1X B11CHDTWW is designed for a vast array of medium-duty industrial and mobile applications where precise, reliable, and powerful linear motion is required.
| Industry Sector | Typical Applications |
|---|---|
| Industrial & Manufacturing | Feed and clamping actions in machine tools, general automation systems, conveyor systems, lifting equipment, factory machinery |
| Metal Processing | Hydraulic drives in shearing and bending machines, stamping presses, test rigs |
| Plastics & Rubber Processing | Mold opening/closing and material injection in injection molding machines and die-casting machines, blow molding equipment, rubber processing machinery |
| Automotive Manufacturing | Hydraulic systems for stamping, welding, and other process equipment on automotive production lines |
| Construction Machinery | Small to medium excavators, loaders, and earthmoving machinery where heavy loads need to be lifted or moved |
| Mining Equipment | Mining machinery, material handling systems requiring reliable hydraulic power |
| Material Handling & Logistics | Automated assembly lines for material handling, component installation, and other processes, hydraulic lifts, stackers |
| Aerospace & Defense | High-precision hydraulic drive systems in aerospace equipment manufacturing and ground support equipment |
| Oil & Gas / Petrochemical | Oil field equipment and drilling machinery |
| Steel & Metallurgy | Steel mill hydraulic systems, shearing equipment, metallurgical machinery |
| Ceramic & Refractory Industry | Hydraulic equipment in ceramic factories, tile presses, brick presses |
| Paper & Pulp Industry | Hydraulic systems and components for paper manufacturing machinery |
| Power Generation | Hydraulic equipment in thermal power plants and hydroelectric facilities |
Performance Specifications
| Specification | Value |
|---|---|
| Manufacturer | Bosch Rexroth |
| Series | CDT3 (Tie-Rod Cylinder) |
| Model Code | CDT3ME5 63 45 370Z1X B11CHDTWW |
| Cylinder Type | Single-rod differential cylinder |
| Mounting Type | ME5 – Rectangular flange on cylinder head (axial foot-mounted) |
| Piston Diameter | 63 mm |
| Piston Rod Diameter | 45 mm |
| Stroke Length | 370 mm |
| Nominal Pressure (Continuous) | 160 bar (16 MPa) |
| Maximum Pressure (Static Load) | 210 bar (21 MPa) |
| Static Test Pressure | 240 bar (24 MPa) |
| Applicable Standards | ISO 6020, DIN 24554, NF/ISO 6020 |
| Piston Rod Type | C – Hard chrome-plated |
| Piston Rod End | H – Threaded for hinge lug (KK = M120x4) |
| End Cushioning | D – Adjustable on both sides |
| Port Type | B – ISO 1179-1 (G 1 1/2 pipe thread) |
| Sealing Type | T – Standard (Mineral oils HL, HLP, HFA) |
| Corrosion Class | R1 (Grade I – 240h SST, 240h KKT) |
| Finish | Gentian blue (RAL 5010), 40 μm dry film |
| Minimum Pressure (No Load) | 10 bar |
| Minimum Pressure (Loaded) | 20 bar |
| Fluid Compatibility | Mineral oils (HL, HLP), HFA, HFCP, HFD-R |
| Optimal Viscosity Range | 20–100 mm²/s |
| Operating Temperature Range | -40°C to +93°C (approx.) |
| Fluid Cleanliness | ISO 4406 (c) class 20/18/15 |
Conclusion
The Rexroth CDT3ME5 63 45 370Z1X B11CHDTWW is a precision-engineered, reliable, and durable hydraulic tie-rod cylinder that exemplifies Bosch Rexroth's manufacturing excellence. Its robust ME5 bottom flange mounting, compact yet powerful specifications, and essential features like a hard chrome-plated rod and adjustable double-sided cushioning make it a versatile and powerful linear actuator.
Designed for a nominal pressure of 160 bar and a static load capability of 210 bar, it is well-suited for a vast spectrum of medium-duty industrial and mobile applications, including machine tools, construction equipment, material handling systems, steel mills, ceramic presses, and paper machinery.
Compliant with ISO 6020-2 and DIN 24554, this cylinder offers global mechanical interchangeability and easy integration. The integrated guide socket simplifies maintenance, while the R1 class corrosion protection ensures long-lasting performance even in demanding environments. Its ability to deliver smooth, controlled, high-performance linear motion makes it a dependable choice for engineers and system integrators worldwide.
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