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Hydraulic cylinders Tie rod design

Hydraulic cylinders Tie rod design
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Hydraulic cylinders Tie rod design

Product catalog summary
Overview: The document provides comprehensive specifications and ordering information for Bosch Rexroth's hydraulic cylinders in tie rod design, specifically Series 70, Component series 1X, with a nominal pressure of 70 bar (7 MPa). It covers both CD70 and CG70 types, detailing various mounting options and technical specifications.
Features: The hydraulic cylinders offer 16 mounting types, piston diameters from 25 to 200 mm, piston rod diameters from 12 to 140 mm, and stroke lengths up to 3 meters. The document highlights the use of the Interactive Catalog System (ICS) for efficient design and planning.
Ordering Codes: Detailed ordering codes for Series CD70 and CG70 are provided, specifying options for mounting types, piston and rod diameters, stroke lengths, design principles, line connections, piston rod designs, and end position cushioning. Examples and notes on special versions are included.
Technical Data: The document outlines technical parameters, including nominal and maximum operating pressures, hydraulic fluid specifications, temperature ranges, and cleanliness class requirements, emphasizing adherence for optimal performance and reliability.
Mounting and Installation: Various mounting types are detailed with specific instructions on line connection positions and the impact of rotating cylinder components. Guidelines for installation lengths, position tolerances, and kinking calculations are provided.
Standards and Safety: The hydraulic cylinders comply with Rexroth standards and ISO 10100:2001. Safety instructions for assembly, commissioning, and maintenance are included, stressing the need for trained personnel for service and repair work.
Project Planning Software: The ICS software is highlighted as a tool for selecting and planning hydraulic cylinder solutions, offering technical data and CAD files for integration into design systems.
Key Data Tables: The document includes tables for diameters, forces, and areas, providing essential data for calculating forces on piston and rod sides at various operating pressures.
Specifications: The document details piston diameters from 25 mm to 200 mm, operating pressures up to 105 bar for smaller pistons, and various thread sizes for piston rod ends.
Dimensions and Mounting Types: Dimensions for mounting types R, E, S, and F are detailed, with specific measurements for each piston size. Additional features include adjustable throttle valves for end position cushioning, check valves, and bleeding options.
Key Notes: Trunnion positions are freely selectable, and specific dimensions must be specified when ordering. Piston rod extensions and specific end position cushioning types are available for certain models.
Conclusion: This document serves as a comprehensive guide for selecting and specifying hydraulic cylinders in the CD70 and CG70 series, providing essential technical details for engineers and designers in hydraulic applications.
Procedures: Instructions for kinking calculations are provided, emphasizing the importance of considering piston rods as slim rods. The document discusses support width extension to reduce bearing load during long strokes and pressure loads.
Standards and Recommendations: Guidelines for installation lengths, position tolerances, and the use of inductive proximity switches for end position control are provided.
End Position Cushioning: Detailed descriptions of the end position cushioning mechanism are provided, including the use of adjustable throttle valves and check valves to manage damping effects.
Braking Force Calculation: The document explains how to calculate the braking force required for controlled deceleration of the hydraulic cylinder, considering factors like stroke velocity, piston area, and system pressure.
Spare Parts: A spare parts drawing is included, listing components such as the head, base, piston rod, and various seals. Instructions for ordering spare parts and seal kits are provided.
Weight Data: The document outlines weight per 100 mm stroke for both differential and double-acting cylinders across various piston and piston rod diameters, categorized by cylinder type and mounting style.
Important Considerations: The document emphasizes that the data provided is for product description only and does not guarantee suitability for specific applications. Users are advised to conduct their own assessments and verifications.
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Catalog excerpts

Hydraulic cylinders Tie rod design-1

The Drive & Control Company Rexroth Bosch Group Hydraulic cylinders Tie rod design RE 17016 Edition: 2014-03 Replaces: 08.08 ► 16 types of mounting ► Piston 0 (0AL) 25 ... 200 mm ► Piston rod 0 (0MM) 12 ... 140 mm ► Stroke length up to 3 m Ordering code: Series CD70 2, 3 Ordering code: Series CG70 4, 5 Position of the line connections 6 Project planning software ICS 8 Diameters, forces and areas 9 Overview types of mounting: Series CD70 10 Overview types of mounting: Series CG70 11 Enlarged line connection 13 and 14 76 Admissible stroke lengths 82 ... 84 Support width extension 85 Installation lengths and position tolerances 86 Inductive proximity switch 87, 88 Seals (standard versions) 89 Braking force calculation 90 Spare parts drawing 91 Project planning software Interactive Catalog System Bosch Rexroth AG, RE 17016, edition: 2014-03

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Hydraulic cylinders Tie rod design-2

Bosch Rexroth AG, RE 17016, edition: 2014-03

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Hydraulic cylinders Tie rod design-3

Hydraulic cylinders, tie rod design | CD70 / CG70 3/92 1) Not possible with piston 0 25 mm 2) Not possible with piston 0 200 mm 3) Trunnion position freely selectable. When ordering, always specify the "XV" dimension in the plain text in mm. With piston 0 25 mm, the trunnions are at the cylinder head. 4) Observe the admissible stroke length, page 82 to 84 5) Dimensions see page 76. Not possible with "K" type of mounting. 6) Not possible with "E" piston rod end 7) Not possible with piston rod 0 12 mm 8) All graphical representations in the data sheet show position 1 9) Always specify the attachment...

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Hydraulic cylinders Tie rod design-4

Bosch Rexroth AG, RE 17016, edition: 2014-03

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Hydraulic cylinders Tie rod design-5

Hydraulic cylinders, tie rod design | CD70 / CG70 5/92 70 1X Line connection/position at head 14 Enter position; observe table on page 6! Line connection/position at base 15 Enter position; observe table on page 6! 17 Enter support width extension; see page 85 18 Further details in the plain text 8) 1) Not possible with piston 0 25 mm 2) Not possible with piston 0 200 mm 3) Trunnion position freely selectable. When ordering, always specify the "XV" dimension in the plain text in mm. With piston 0 25 mm, the trunnions are at the cylinder head. 4) Observe the admissible stroke length, page 82 to...

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Hydraulic cylinders Tie rod design-6

6/92 CD70 / CF70 | Hydraulic cylinders, tie rod design Position of the line connections By rotating the cylinder head and/or cylinder base, the position of the line connections can be varied during the assembly for most cylinder mounting types. The possibilities can be seen in the following table. Throttle and check valve will also change their position accordingly. With F, L, N and T types of mounting as well as at the cylinder base with G type of mounting, throttle and check valve are in position 1 when the line connection is rotated. Selectable position of the line connections Position 2 and...

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Hydraulic cylinders Tie rod design-7

Hydraulic cylinders, tie rod design | CD70 / CG70 7/92 3) A minimum operating pressure is required in order to guarantee good functioning of the hydraulic cylinder. Without load, a minimum pressure of 10 bar is recommended for differential cylinders; for lower pressures as well as double-acting cylinders, please contact us. 4) The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and at the same time increases the life cycle of the components. For the selection of the filters see www.boschrexroth.com/filter. RE 17016,...

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Hydraulic cylinders Tie rod design-8

CD70 / CF70 | Hydraulic cylinders, tie rod design Life cycle: Rexroth hydraulic cylinders correspond to the reliability recommendations for industrial applications. ≥ 10000000 double strokes in idle continuous operation or 3000 km piston travel at 70 % of the nominal pressure, without load on the piston rod, with a maximum velocity of 0.5 m/s, with a failure rate of less than 5 %. Notice! 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...

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Hydraulic cylinders Tie rod design-9

Hydraulic cylinders, tie rod design | CD70 / CG70 9/92 RE 17016, edition: 2014-03, Bosch Rexroth AG

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Hydraulic cylinders Tie rod design-10

CD70 / CF70 | Hydraulic cylinders, tie rod design Overview types of mounting: Series CD70 CD70 B Bosch Rexroth AG, RE 17016, edition: 2014-03

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Hydraulic cylinders Tie rod design-11

Hydraulic cylinders, tie rod design | CD70 / CG70 11/92 Overview types of mounting: Series CG70 CG70 C RE 17016, edition: 2014-03, Bosch Rexroth AG

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Hydraulic cylinders Tie rod design-12

12/92 CD70 / CF70 | Hydraulic cylinders, tie rod design Dimensions: Type of mounting B (dimensions in mm) Piston 0 25 ... 63 mm Bosch Rexroth AG, RE 17016, edition: 2014-03

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Hydraulic cylinders Tie rod design-13

Hydraulic cylinders, tie rod design | CD70 / CG70 13/92 0AL = Piston 0 0MM = Piston rod 0 X* = Stroke length 1) Raised cylinder head and base 2) Raised cylinder head except for 0 32/18 with end position cushioning "U" or "K" 3) Raised cylinder head for: 0 40/25; 0 50/36 and 0 63/45 with end position cushioning "D" or "S" 5) Adjustable throttle valve for the end position cushioning 6) Check valve and bleeding 7) Lubricating nipple, cone head form A according to DIN 71412 RE 17016, edition: 2014-03, Bosch Rexroth AG

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Hydraulic cylinders Tie rod design-14

14/92 CD70 / CF70 | Hydraulic cylinders, tie rod design Dimensions: Type of mounting B (dimensions in mm) Piston 0 80 ... 200 mm Bosch Rexroth AG, RE 17016, edition: 2014-03

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Hydraulic cylinders Tie rod design-15

Hydraulic cylinders, tie rod design | CD70 / CG70 15/92 0AL = Piston 0 0MM = Piston rod 0 X* = Stroke length 5) Adjustable throttle valve for the end position cushioning 6) Check valve and bleeding 7) Lubricating nipple, cone head form A according to DIN 71412 RE 17016, edition: 2014-03, Bosch Rexroth AG

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Hydraulic cylinders Tie rod design-16

16/92 CD70 / CF70 | Hydraulic cylinders, tie rod design Dimensions: Type of mounting G (dimensions in mm) Piston 0 25 ... 63 mm Bosch Rexroth AG, RE 17016, edition: 2014-03

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Hydraulic cylinders Tie rod design-17

Hydraulic cylinders, tie rod design | CD70 / CG70 17/92 0AL = Piston 0 0MM = Piston rod 0 X* = Stroke length 1) Bolts and pins are included in the scope of delivery 2) Raised cylinder head except for 0 32/18 with end position cushioning "U" or "K" 3) Raised cylinder head for: 0 40/25; 0 50/36 and 0 63/45 with end position cushioning "D" or "S" 5) Adjustable throttle valve for the end position cushioning 6) Check valve and bleeding RE 17016, edition: 2014-03, Bosch Rexroth AG

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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.