ISO/TC 131/SC 3 - Cylinders

This document specifies the mounting dimensions required for interchangeability of accessories for 16 MPa (160 bar) compact cylinders conforming to ISO 6020‑2. The accessories have been designed specifically for use with cylinders manufactured in accordance with ISO 6020‑2, but this does not limit their application[1]. This document covers the following accessories, identified in accordance with ISO 6099: — AP6 — rod eye spherical, female thread (see Figure 1 and Table 1); — AB5 — clevis bracket, spherical eye, in angle (see Figure 2 and Table 2); — AA6-L — pivot pin, spherical bearing, locking plate (see Figure 3 and Table 3); — AL6 — locking plate for pivot pin (see Figure 4 and Table 4); — AP2 — rod clevis, female thread (see Figure 5 and Table 5); — AP4 — rod eye plain, female thread (see Figure 6 and Table 6); — AB2 — eye bracket (see Figure 7 and Table 7); — AB4 — clevis bracket, straight (see Figure 8 and Table 8); — AA4-S — pivot pin, plain (split pins) (see Figure 9 and Table 9); — AA4-R — pivot pin, plain (rings) (see Figure 10 and Table 10); — AT4 — trunnion bracket (see Figure 11 and Table 11). These accessories are used on hydraulic cylinders for mechanically transmitting the cylinder force. The design of these accessories is based on the maximum forces resulting from the specified internal diameters of the cylinders and pressures according to ISO 3320 and ISO 2944. This document only applies to the dimensional criteria of products manufactured in conformity with this document; it does not apply to their functional characteristics. [1] 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2

This document specifies the mounting dimensions required for the interchangeability of accessories for 16 MPa (160 bar) medium series cylinders in accordance with ISO 6020‑1 and for 25 MPa (250 bar) series cylinders in accordance with ISO 6022. The accessories have been designed specifically for use with cylinders manufactured in accordance with ISO 6020‑1 and ISO 6022, but this does not limit their application[1]. This document covers the following accessories, identified in accordance with ISO 6099: — AP2 — rod clevis, female thread (see Figure 1 and Table 1); — AF3 — rod flange, circular (see Figure 2 and Table 2); — AB4 — clevis bracket, straight (see Figure 3 and Table 3); — AB3 — clevis bracket, in angle (see Figure 4 and Table 4); — AT4 — trunnion bracket (see Figure 5 and Table 5); — AA4-R — pivot pin, plain bearing (snap ring type) (see Figure 6 and Table 6); — AA4-S — pivot pin, plain bearing (split pin type) (see Figure 7 and Table 7); — AA6-R — pivot pin, spherical bearing (snap ring type) (see Figure 6 and Table 6); — AA6-S — pivot pin, spherical bearing (split pin type) (see Figure 7 and Table 7); — AP6 — rod eye spherical, female thread (see Figure 8 and Table 8); — AP4 — rod eye plain, female thread (see Figure 9 and Table 9). These accessories are used on hydraulic cylinders for mechanically transmitting the cylinder force. The design of these accessories is based on the maximum forces resulting from the specified internal diameters of the cylinders and pressures according to ISO 3320 and ISO 2944. This document applies only to the dimensional criteria of products manufactured in conformity with this document; it does not apply to their functional characteristics. [1] 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2.

This document specifies a method for the evaluation of the buckling load which: a) takes into account a geometric model of the hydraulic cylinder, meaning it does not treat the hydraulic cylinder as an equivalent column, b) can be used for all types of cylinder mounting and rod end connection specified in Table 2, c) includes a factor of safety, k, to be set by the person performing the calculations and reported with the results of the calculations, d) takes into account possible off-axis loading, e) takes into account the weight of the hydraulic cylinder, meaning it does not neglect all transverse loads applied on the hydraulic cylinder, f) can be implemented as a simple computer program, and g) considers the cylinder fully extended. The method specified is based on the elastic buckling theory and is applicable to single and double acting cylinders that conform to ISO 6020 (all parts), ISO 6022 and ISO 10762. If necessary, finite element analyses can be used to verify as well as to determine the buckling load. The method is not developed for thin-walled cylinders, double-rods or plunger cylinders. The method is not developed for internal (rod) buckling. The friction of spherical bearings is not taken into account. NOTE This method is based mainly on original work by Fred Hoblit[2]. This method has been established in reference to the standard NFPA/T3.6.37[1].

This document specifies acceptance and function tests for hydraulic fluid power cylinders.

This document establishes a convention for the identification of mounting dimensions and types used in the mounting of fluid power cylinders. It specifies a code for identifying cylinder mounting, envelope, accessory and connector dimensions, and for cylinder mounting and accessory types. This document does not represent a standard list of all fluid power cylinder mounting and accessory types.

This document specifies the mounting dimensions required for interchangeability of rod-end clevises of pneumatic cylinders. The rod-end clevises have been designed specifically for use with 1 000 kPa [10 bar1] series cylinders manufactured in accordance with ISO 6432 and ISO 15552, but this does not limit their application. The clevises are used on piston rods of pneumatic cylinders for mechanically transmitting the cylinder force. The design of the clevises is based on the maximum forces resulting from the specified internal diameter of the cylinders and pressure according to ISO 6432, ISO 15552 and ISO 21287. 1 1 bar = 100 kPa = 105 Pa; 1 Pa = 1 N/m2.

This document specifies the mounting dimensions required for interchangeability of rod-end spherical eyes of pneumatic cylinders. The rod-end spherical eyes have been designed specifically for use with 1 000 kPa [10 bar[1]] series cylinders manufactured in accordance with ISO 6432 and ISO 15552, but this does not limit their application. The spherical bearing end eyes are used on piston rods of pneumatic cylinders for mechanically transmitting the cylinder force under oscillatory rotational and tilting movements. The design of the rod-end spherical eyes is based on the maximum forces resulting from the specified internal diameter of the cylinders and pressure according to ISO 6432, ISO 15552 and ISO 21287. [1] 1 bar = 100 kPa = 105 Pa; 1 Pa = 1 N/m2.

ISO 15552:2018 establishes a metric series of basic, mounting and accessories dimensions as required for interchangeability of single or double rod pneumatic cylinders with or without provision for magnetic sensors for a maximum rated pressure of 1 000 kPa (10 bar). ISO 15552:2018 applies to pneumatic cylinders with detachable mountings.

ISO 16656:2016 establishes mounting dimensions for single rod short-stroke cylinders with bores from 32 mm to 100 mm for use at 10 MPa (100 bar) with or without magnetic functions, as required for interchangeability of these commonly used hydraulic cylinders.

ISO 4393:2015 specifies the preferred series of piston strokes for application to single-acting and double-acting fluid power cylinders. These strokes are mainly used for pneumatic cylinders but may also be used for hydraulic cylinders.

ISO 6020-3:2015 establishes metric mounting dimensions for single rod compact series hydraulic cylinders with bores from 250 mm to 500 mm for use at 16 MPa (160 bar[1]), as required for interchangeability of commonly used hydraulic cylinders. NOTE 1 This part of ISO 6020 allows manufacturers of hydraulic equipment flexibility in the design of metric cylinders and does not restrict technical development, but does provide basic guidelines. NOTE 2 The compact series dimensions are most applicable to square-head cylinders. ISO 6020-3:2015 applies only to the dimensions of manufactured products. It does not apply to their functional characteristics. [1] 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2.

ISO 6020-2:2015 establishes metric mounting dimensions for compact series cylinders, 16 MPa [160 bar], as required for interchangeability of commonly-used hydraulic cylinders.

ISO 6432:2015 establishes a metric series of mounting dimensions required for interchangeability of commonly used pneumatic cylinders for a maximum working pressure of 1 000 kPa (10 bar). NOTE This International Standard allows manufacturers freedom of design in metric cylinders and does not restrict technical development but provides basic guidelines.

ISO 10762:2015 establishes mounting dimensions for cylinders for use at 10 MPa [100 bar[1]], as required for interchangeability of these cylinders. NOTE This International Standard allows manufacturers of hydraulic equipment flexibility in the design of 10 MPa (100 bar) cylinders and does not restrict technical development; however, it does provide basic guidelines. [1] 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2.

ISO 3320:2013 establishes a metric series of cylinder bore and piston rod diameters for hydraulic and pneumatic cylinders, and specifies for each pair of diameters a corresponding standard ratio between the useful areas. It applies only to the dimensional criteria of products manufactured in conformity with ISO 3320:2013; it does not apply to their functional characteristics.

This International Standard establishes a metric series of single-rod pneumatic short‑stroke cylinders with bores from 20 mm to 100 mm (inclusive) for use at maximum working pressure of 1 000 kPa [10 bar 1)] with and without magnetic function. They are not equipped with adjustable cushioning, so their application is restricted to those systems where adjustable cushioning is not required.

ISO 4395:2009 establishes a basic series for piston rod end types for application on cylinders used in hydraulic and pneumatic fluid power systems. ISO 4395:2009 specifies thread dimensions and configurations for use with hydraulic and pneumatic cylinder piston rod ends, as well as the dimensions of wrench flats and hook wrench holes that are sometimes necessary for the assembly of the cylinder piston rod's threaded end to accessories.

ISO 13726:2008 specifies the mounting dimensions required for interchangeability of accessories for 16 MPa (160 bar) compact cylinders conforming to ISO 6020-3. The accessories have been designed specifically for use with cylinders manufactured in accordance with ISO 6020-3, but this does not limit their application. ISO 13726:2008 covers the following accessories: AP2 – rod clevis, female thread (see Figure 1 and Table 1); AP4 – rod eye, plain, female thread (see Figure 2 and Table 2); AA4 – L – pivot pin (locking plate) (see Figure 3 and Table 3); AL6 – locking plate for pivot pin (see Figure 4 and Table 4); AA4 – S – plain pivot pin (see Figure 5 and Table 5).

ISO 6020-1:2007 establishes metric mounting dimensions for medium series cylinders, 16 MPa (160 bar), as required for interchangeability of commonly used hydraulic cylinders. The medium series dimensions are applicable to round head cylinders with bores from 25 mm to 200 mm and to both round and square head cylinders with bores larger than 200 mm, thus allowing a wider range of applications.

ISO 6022:2005 establishes mounting dimensions for hydraulic cylinders for use at 25 MPa (250 bar), as required for interchangeability of these cylinders.

ISO 21287:2004 establishes a metric series of single rod pneumatic compact cylinders with bores of 20 mm to 100 mm for use of at maximum working pressure of 1 000 kPa (10 bar) with and without magnetic function. This series of pneumatic cylinder is not equipped with adjustable cushioning. Therefore, the application is restricted to those systems where adjustable cushioning is not required. Cylinders with bores of 20 mm and 25 mm can be used with end cover mountings in accordance with ISO 21287:2004. Cylinders with bores from 32 mm to 100 mm can be used with end cover mountings in accordance with ISO 15552. Piston rod mountings can be used for the different bores in accordance with ISO 8139 and ISO 8140.

This International Standard specifies functional tests for a final examination and the acceptance criteria for doubleacting pneumatic cylinders with a single-rod used in pneumatic fluid power systems.

Covers non-ferrous metallic pneumatic cylinder tubes. Defines the mechanical properties, dimensional tolerances, surface finishes, and technical delivery conditions of the following tubes and bores for pneumatic fluid power cylinders: round non-ferrous metallic tubes, seamless or welded type, in the as-drawn stress-relieved or fully heat-treated condition; bores, specially finished, with or without metal removal. Annex A specifies the dimensions and tolerances on inside diameters, annex B provides a recommended method of ordering.

ISO/TS 13725:2016 specifies a method for the evaluation of the buckling load which a) takes into account a geometric model of the hydraulic cylinder, meaning it does not treat the hydraulic cylinder as an equivalent column, b) can be used for all types of cylinder mounting and rod end connection specified in Table 2, c) includes a factor of safety, k, to be set by the person performing the calculations and reported with the results of the calculations, d) takes into account possible off-axis loading, e) takes into account the weight of the hydraulic cylinder, meaning it does not neglect all transverse loads applied on the hydraulic cylinder, f) can be implemented as a simple computer program, and g) considers the cylinder fully extended. The method specified is based on the elastic buckling theory and is applicable to single and double acting cylinders that conform to ISO 6020 (all parts), ISO 6022 and ISO 10762. If necessary, finite element analyses can be used to verify as well as to determine the buckling load. The method is not developed for thin-walled cylinders, double-rods or plunger cylinders. The method is not developed for internal (rod) buckling. The friction of spherical bearings is not taken into account. NOTE This method is based mainly on original work by Fred Hoblit.[2] This method has been established in reference to the standard NF PA/T3.6.37.[1]

ISO 8132:2014 specifies the mounting dimensions required for the interchangeability of accessories for 16 MPa [160 bar] medium series cylinders in accordance with ISO 6020‑1 and for 25 MPa (250 bar) series cylinders, in accordance with ISO 6022. The accessories have been designed specifically for use with cylinders manufactured in accordance with ISO 6020‑1 and ISO 6022, but this does not limit their application. ISO 8132:2014 covers the following accessories, identified in accordance with ISO 6099: AP2 (rod clevis, female thread); AF3 (rod flange, circular); AB4 (clevis bracket, straight); AB3 (clevis bracket, in angle); AT4 (trunnion bracket); AA4-R (pivot pin, plain, cotter pin or snap ring type); AA4-S (pivot pin, plain, split pins); AA6-R (pivot pin, spherical bearing, cotter pin or snap ring type); AA6-S (pivot pin, spherical bearing, split pins); AP6 (rod eye spherical, female thread); AP4 (rod eye plain, female thread). These accessories are used on hydraulic cylinders for mechanically transmitting the cylinder force. The design of these accessories is based on the maximum forces resulting from the specified internal diameters of the cylinders and pressures according to ISO 3320 and ISO 3322. ISO 8132:2014 applies only to the dimensional criteria of products manufactured in conformity with this International Standard; it does not apply to their functional characteristics.

ISO 8133:2014 specifies the mounting dimensions required for interchangeability of accessories for 16 MPa [160 bar)] compact cylinders conforming to ISO 6020-2. The accessories have been designed specifically for use with cylinders manufactured in accordance with ISO 6020-2, but this does not limit their application. ISO 8133:2014 covers the following accessories, identified in accordance with ISO 6099: AP6 (rod eye spherical, female thread); AB5 (clevis bracket, spherical eye, in angle); AA6-L (pivot pin, spherical bearing, locking plate); AL6 (locking plate for pivot pin); AP2 (rod clevis, female thread); AP4 (rod eye plain, female thread); AB2 (eye bracket); AB4 (clevis bracket, straight); AA4-S (pivot pin, plain, split pins); AA4-R (pivot pin, plain, rings); AT4 (trunnion bracket). These accessories are used on hydraulic cylinders for mechanically transmitting the cylinder force. The design of these accessories is based on the maximum forces resulting from the specified internal diameters of the cylinders and pressures according to ISO 3320 and ISO 3322. ISO 8133:2014 only applies to the dimensional criteria of products manufactured in conformity with this International Standard; it does not apply to their functional characteristics.

ISO 8139:2009 specifies the mounting dimensions required for interchangeability of rod-end spherical eyes of pneumatic cylinders. The rod-end spherical eyes have been designed specifically for use with 1 000 kPa (10 bar) series cylinders manufactured in accordance with ISO 6430, ISO 6432 and ISO 15552, but this does not limit their application. The spherical bearing end eyes are used on piston rods of pneumatic cylinders for mechanically transmitting the cylinder force under oscillatory rotational and tilting movements. The design of the rod-end spherical eyes is based on the maximum forces resulting from the specified internal diameter of the cylinders and pressure according to ISO 6430, ISO 6432 and ISO 15552.

ISO 8140 specifies the mounting dimensions required for interchangeability of rod-end clevises of pneumatic cylinders. The rod-end clevises have been designed specifically for use with 1 000 kPa (10 bar) series cylinders manufactured in accordance with ISO 6430, ISO 6432 and ISO 15552, but this does not limit their application. The clevises are used on piston rods of pneumatic cylinders for mechanically transmitting the cylinder force. The design of the clevises is based on the maximum forces resulting from the specified internal diameter of the cylinders and pressure according to ISO 6430, ISO 6432 and ISO 15552.

ISO 6099:2009 establishes a convention for the identification of mounting dimensions and types used in the mounting of fluid power cylinders. It specifies a code for identifying cylinder mounting, envelope, accessory and connector dimensions, and for cylinder mounting and accessory types. It does not represent a standard list of all fluid power cylinder mounting and accessory types.

ISO 6020-2:2006 establishes metric mounting dimensions for compact series cylinders, 16 MPa (160 bar), as required for interchangeability of commonly-used hydraulic cylinders.

ISO 8133:2006 specifies the mounting dimensions required for interchangeability of accessories for 16 MPa (160 bar) compact cylinders conforming to ISO 6020-2. The accessories have been designed specifically for use with cylinders manufactured in accordance with ISO 6020-2, but this does not limit their application. ISO 8133:2006 covers the following accessories, identified in accordance with ISO 6099: AP 6: rod eye spherical, female thread; AB 5: clevis bracket, spherical eye, in angle; AA 7: pivot pin, spherical bearing, locking plate; AL 7: locking plate for pivot pin; AP 2: rod clevis, female thread; AP 4: rod eye plain, female thread; AB 2: eye bracket; AB 4: clevis bracket, straight; AA 4: pivot pin, plain (cotter pin or snap ring type); and AT 4: trunnion bracket. These accessories are used on hydraulic cylinders for mechanically transmitting the cylinder force. The design of these accessories is based on the maximum forces resulting from the specified internal diameters of the cylinders and pressures according to ISO 3320 and ISO 3322. ISO 8133:2006 only applies to the dimensional criteria of products manufactured in conformity with ISO 8133:2006; it does not apply to their functional characteristics.

ISO 8132:2006 lays down the mounting dimensions required for the interchangeability of accessories for the 16 MPa (160 bar) medium series cylinders in accordance with ISO 6020-1 and for the 25 MPa (250 bar) series cylinders in accordance with ISO 6022. The accessories have been designed specifically for use with cylinders manufactured in accordance with ISO 6020-1 and ISO 6022, but this does not limit their application. ISO 8132:2006 covers the following accessories, identified in accordance with ISO 6099: AP: rod clevis, female thread; AF 3: rod flange, circular; AB 4: clevis bracket, straight; AB 3: clevis bracket, in angle; AT 4: trunnion bracket; AA 8: pivot pin, plain or spherical bearing (cotter pin or snap ring type); AP 6: rod eye spherical, female thread; AP 4: rod eye plain, female thread. These accessories are used on hydraulic cylinders for mechanically transmitting the cylinder force. The design of these accessories is based on the maximum forces resulting from the specified internal diameters of the cylinders and pressures according to ISO 3320 and ISO 3322. ISO 8132:2006 applies only to the dimensional criteria of products manufactured in conformity with this International Standard; it does not apply to their functional characteristics.

ISO 16656:2004 establishes mounting dimensions for single rod short-stroke cylinders with bores from 32 mm to 100 mm for use at 10 MPa (100 bar), as required for interchangeability of these commonly used hydraulic cylinders.

ISO 15552:2004 established a metric series of basic, mounting and accessories dimensions as required for interchangeability of single- or double-rod pneumatic cylinders, with or without provision for magnetic sensors for a maximum rated pressure of 1 000 kPa (10 bar). It is applicable to pneumatic cylinders with detachable mountings.

ISO/TR 16806:2003 describes how to calculate the loading limits for a pneumatic slide based upon external forces applied in the three principle planes of a tool plate, and applied at any point; external torque applied in the three principle planes of a tool plate; and bearing limits determined by the slide manufacturer in conjunction with the bearing supplier. It also describes how to calculate tool plate deflections due to the loads. ISO/TR 16806:2003 describes how to present the rating information in technical documentation for application by a user.

Establishes metric mounting dimensions for compact-series cylinders with bores from 250 mm to 500 mm, 16 MPa, as required for interchangeability of commonly used hydraulic cylinders. Only applies to the dimensions of manufactured products. Does not apply to their functional characteristics.

Specifies tolerances for stroke (up to and including 1 250 mm) and mounting dimensions according to ISO 6020-2 as required for interchangeability.

Establishes a metric series of mounting dimensions (basic dimensions, nominal stroke and tolerances, bore sizes, mounting styles, piston rod characteristics) required for interchangeability of commonly used pneumatic cylinders for a maximum working pressure of 1 000 kPa (10 bar). Applies to pneumatic cylinders with detachable mountings.

Establishes a metric series of mounting dimensions (basic dimensions, nominal stroke and tolerances, bore sizes, mounting styles, piston rod characteristics) required for interchangeability of commonly used pneumatic cylinders for a maximum working pressure of 1 000 kPa (10 bar). Applies to pneumatic cylinders with detachable mountings.

Specifies the mounting dimensions required for interchangeability of rod end plain eyes of hydraulic cylinders. Tabulates parameters for the types 10 to 320.

Specifies the mounting dimensions required for interchangeability of rod end spherical eyes of hydraulic cylinders. Tabulates parameters for the types 10 to 320.