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Hydraulic cylinders Tie rod design - Series CDT3…Z; CGT3…Z; CST3…Z

Hydraulic cylinders Tie rod design - Series CDT3…Z; CGT3…Z; CST3…Z
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Hydraulic cylinders Tie rod design - Series CDT3…Z; CGT3…Z; CST3…Z

Product catalog summary
Features: The hydraulic cylinders in the CDT3, CGT3, and CST3 series are designed with tie rod construction and comply with ISO 6020-2 standards. They offer 13 mounting types, piston diameters from 25 to 200 mm, and stroke lengths up to 3000 mm. Features include integrated guide sockets, optional end position cushioning, and a patented safety vent for safe bleeding.
Technical Data: These cylinders are designed for a nominal pressure of 160 bar, with a maximum operating pressure of 210 bar under static load. The minimum pressure for proper functioning is approximately 10 bar. The hydraulic fluid temperature and ambient temperature ranges are specified, with a viscosity range of 20 to 100 mm²/s. The cleanliness class for hydraulic fluid is ISO 4406 class 20/18/15.
Stroke Length and Velocity: Detailed information is provided on stroke length and velocity, with recommendations for seal designs and minimum velocities. Maximum stroke velocity varies with piston and rod diameters.
Project Planning Software: The Interactive Catalog System (ICS) aids in selecting and planning hydraulic cylinders, offering technical data and CAD files for design purposes.
Areas, Forces, and Flow: Tables detail piston and rod diameters, area ratios, forces, and flow rates at different pressures for the CDT3, CGT3, and CST3 series.
Mounting Types: Various mounting types are available for the CDT3 series, with specific page references for dimensions and specifications.
Ordering Code: A comprehensive ordering code system for the CDT3 series details options for test certificates, oil filling, color setup, seal design, end position cushioning, and piston rod ends.
Additional Information: The document covers leakage oil connections, position measurement systems, and accessories like swivel heads and clevis brackets. Safety instructions emphasize proper assembly and maintenance by trained personnel.
Specifications: Detailed specifications for hydraulic components include pistons, measuring couplings, and subplates. Pistons with diameters of 40 mm or more have secured bleed screws. Measuring couplings are available in G1/8 and G1/4 sizes, with seal rings made of NBR or FKM.
Procedures: Instructions for installing measuring couplings with check valves for pressure measurement or contamination-free bleeding are included. Tightening torques and guidelines for installing subplates and trunnion bearing blocks are specified.
Standards and Norms: References include ISO 4401 for porting patterns and ISO 8133/8132 for swivel heads and clevis brackets. The position measurement system operates based on the magnetostrictive effect, providing analog and digital outputs.
Recommendations: For applications outside specified parameters, consultation with the manufacturer is recommended. The document advises checking component usability when combined with other mounting elements.
Key Data from Tables: Specifications for bleed screws and measuring couplings, subplate dimensions and weights, and position measurement system specifications are provided. Admissible stroke lengths are detailed for various piston diameters and installation positions.
Critical Information: Ensure proper securing of bleed screws for pistons Ø ≥ 40 mm. Use appropriate measuring couplings and seal rings based on application requirements. Follow specified tightening torques and installation guidelines to ensure component integrity. Verify compatibility of components when used with other mounting elements.
Admissible Stroke Lengths: Permissible stroke lengths for various mounting types under different pressure conditions and installation positions are outlined, with detailed tables for each configuration.
End Position Cushioning: The importance of end position cushioning to prevent damage is emphasized. The progressive damping system used in the CDT3/CGT3 series is described, highlighting its advantages. Formulas for calculating energy absorption during retraction and extension of the piston rod are provided.
Damping Capacity: Detailed tables and diagrams illustrate the damping capacity of the cylinders under various conditions. Maximum velocities and energy absorption limits are specified, with advice on using end position cushioning for velocities above 20 mm/s.
Specifications and Calculations: Detailed calculations for selecting appropriate piston and piston rod diameters based on parameters such as stroke time, load friction coefficient, available pressure, and return flow pressure are provided. Formulas for determining the force required to move a mass and the necessary piston diameter are included.
Seal Selection and Conditions: Selection criteria for seals based on work and environmental conditions are outlined. A table indicates the suitability of different seal versions under various temperature ranges and application conditions.
Seal Kits and Spare Parts: Details for seal kits, including material numbers for different piston and piston rod diameters, are provided. Spare parts for various series, including piston rod seals, piston seals, and other components, are listed.
Corrosivity Categories: Corrosivity categories for primed and painted cylinder areas are described, specifying resistance levels based on salt spray and condensation water tests.
General Recommendations: Maintaining a medium temperature of approximately 40°C for optimal performance is recommended. The suitability of the seal system should be checked based on specific application parameters.
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Catalog excerpts

Hydraulic cylinders Tie rod design - Series CDT3…Z; CGT3…Z; CST3…Z-1

Electric Drives and Controls Linear Motion and Hydraulics I Assembly Technologies Rexroth Bosch Group Hydraulic cylinders Tie rod designSeries CDT3...Z; CGT3...Z; CST3...ZComponent series 3X Nominal pressure 160 bar (16 MPa) RE 17049/07.17 1/70 Table of contents Contents Page Information on stroke length and stroke velocity 5 Project planning software ICS 5 Areas, forces, flow: Series CDT3 6 Overview types of mounting: Series CDT3 7 Ordering code: Series CDT3 8, 9 Areas, forces, flow: Series CGT3 10 Overview types of mounting: Series CGT3 10 Ordering code: Series CGT3 11 Dimensions: Types of mounting CDT3 / CGT3 12 ... 29 Areas, forces, flow: Series CST3 30 Overview types of mounting: Series CST3 30 Ordering code: Series CST3 31 Dimensions: Types of mounting CST3 32 . 41 Leakage oil connection / Enlarged line connection 42 Position of line connections / bleeding / leakage oil / throttle valve 43 Bleeding / measuring coupling 44 Subplates - Dimensions and porting pattern 45, 46 Contents Page Position measurement system 47, 48 Swivel head (clampable): CGKA - AP 6 49 Clevis bracket (clampable): CLCB - AB 5 50, 51 Trunnion bearing block CLTA - AT 4 52, 53 Kinking, admissible stroke length 54 . 57 End position cushioning, calculation example 58 ... 62 Selection criteria for seals 63 Spare parts drawing: Series CDT3 66 Spare parts drawing: Series CGT3 67 Spare parts drawing: Series CST3 68 Project planning software Interactive Catalog System Online www.boschrexroth.com/ics

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Hydraulic cylinders Tie rod design - Series CDT3…Z; CGT3…Z; CST3…Z-2

2/70 Bosch Rexroth AG | Hydraulics • Installation dimensions according to ISO 6020-2 and NF/ISO 6020-2 • 13 types of mounting • Piston 0 (0AL): 25 to 200 mm • Piston rod 0 (0MM): 12 to 140 mm • Stroke lengths up to 3000 mm • Integrated guide socket for fast and easy maintenance • Self-adjusting or adjustable end position cushioning as option • Patented safety vent for easy and safe bleeding • Easy assembly thanks to freely selectable position of the line connections at head and base Maximum operating pressure (only static load): 210 bar (21 MPa) Static test pressure: 240 bar (24 MPa) For admissible...

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Hydraulic cylinders Tie rod design - Series CDT3…Z; CGT3…Z; CST3…Z-3

Hydraulics | Bosch Rexroth AG Technical data (For applications outside these parameters, please consult us!) Boundary and application conditions: • The mechanical alignment of the movement axis and thus the mounting points of hydraulic cylinder and piston rod must be ensured. Lateral forces on the guides of piston rod and piston are to be avoided. It may be necessary to consider the own weight of the hydraulic cylinder (MP1, MP3, MP5, MT1, MT2 or MT4) or the piston rod. • The bending length/bending load of the piston rod and/or the hydraulic cylinder must be observed (see page topic Kinking)....

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Hydraulic cylinders Tie rod design - Series CDT3…Z; CGT3…Z; CST3…Z-4

4/70 Bosch Rexroth AG | Hydraulics Stroke velocity: See information on stroke length and stroke velocity, higher retraction velocity of the piston rod, drag-out losses of the stroke velocity on request. medium may result. If necessary, please consult us. If the extension velocity is considerably higher than the

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Hydraulic cylinders Tie rod design - Series CDT3…Z; CGT3…Z; CST3…Z-5

Hydraulics | Bosch Rexroth AG Information on stroke length and stroke velocity 0AL (mm) The ICS (Interactive Catalog System) is a selection and project planning aid for hydraulic cylinders. The ICS allows designers for machines and systems to quickly and reliably find the perfect hydraulic cylinder solution through logic-guided type key enquiries. This software helps to solve design and project planning tasks more quickly and efficiently. After having been guided through the product selection, the user quickly and reliably gets the exact technical data of the selected component as well as 2D...

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Hydraulic cylinders Tie rod design - Series CDT3…Z; CGT3…Z; CST3…Z-6

6/70 Bosch Rexroth AG | Hydraulics Theoretical static cylinder force (without consideration of the efficiency and admissible load for attachment parts like e.g. swivel heads, plates or valves, etc.) 4) With operating pressures up to 210 bar only on request 5) Larger stroke lengths upon request

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Hydraulic cylinders Tie rod design - Series CDT3…Z; CGT3…Z; CST3…Z-7

Overview types of mounting: Series CDT3 (for operating pressure up to 210 bar) CDT3 ME5 (ISO/DIN/NF)

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Hydraulic cylinders Tie rod design - Series CDT3…Z; CGT3…Z; CST3…Z-8

8/70 Bosch Rexroth AG | Hydraulics The preferred cylinder designs are marked in gray. Further details in the plain text Types of mounting DIN/ISO Rectangular flange at head = ME5 Rectangular flange at base = ME6 Self-aligning clevis at base = MP5 Types of mounting ISO Clevis at base = MP1 Extended tie rod, on both sides = MX1 Tapped hole at head 2)= MX5 Test certificate W = without test certificate C = with acceptance test certificate 3.1 based on EN 10204 Oil filling without oil filling with oil filling Color set-up W = Priming class CP3 Option 2 W = Without option Y = Specify the piston rod...

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Hydraulic cylinders Tie rod design - Series CDT3…Z; CGT3…Z; CST3…Z-9

Ordering code: Series CDT3 (for operating pressure up to 210 bar) Order example: CDT3MP5/50/36/300Z3X/B11HHDMWW When selecting, please observe the limitations on the corresponding catalog pages! the max. stroke length available, page 6, and the admissible stroke length (according to kinking calculation) on pages 54 to 57 Trunnion position freely selectable; when ordering, always specify the "XV" dimension in the plain text in mm. With type of mounting MS2 and piston Ø 25 and end position cushioning, "E" is not possible With piston Ø 25 to 100 mm: only line connection "B" possible. With piston...

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Hydraulic cylinders Tie rod design - Series CDT3…Z; CGT3…Z; CST3…Z-10

10/70 Bosch Rexroth AG | Hydraulics 1 Theoretical static cylinder force (without consideration of the efficiency and admissible load for attachment parts like e.g. swivel heads, plates or valves, etc.) 4) Larger stroke lengths upon request

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Hydraulic cylinders Tie rod design - Series CDT3…Z; CGT3…Z; CST3…Z-11

Hydraulics | Bosch Rexroth AG 11/70 Further details in the plain text Types of mounting Rectangular flange at head = ME5 Extended tie rod, on both sides = MX1 Tapped hole at head = MX5 Piston 0 (0AL) 25 to 200 mm Piston rod 0 (0MM) 12 to 140 mm Stroke length in mm 14) Design principle Head and base connected to tie rod = Z 30 to 39 unchanged installation and connection dimensions Line connection/version Pipe thread (ISO 1179-1) = B Enlarged pipe thread (ISO 1179-1) 17)= S Line connection / position at head see page 43 View to piston rod Test certificate W = without test certificate C = with acceptance...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.