ISO 6020-1:2007

Overview

ISO 6020-1:2007 - "Hydraulic fluid power - Mounting dimensions for single rod cylinders, 16 MPa (160 bar) series - Part 1: Medium series" specifies metric mounting dimensions for medium-series hydraulic single-rod cylinders rated for 16 MPa (160 bar). The standard defines dimensional requirements to ensure interchangeability of commonly used cylinders, covering round-head bores 25 mm–200 mm and both round and square heads for bores above 200 mm (up to 500 mm).

Key topics and requirements

• Pressure rating: 16 MPa (160 bar) series.
• Bore sizes covered: 25, 32, 40, 50, 63, 80, 100, 125, 160, 200, 250, 320, 400, 500 mm.
• Mounting dimensions: Fundamental dimensions and selectable values are given in Figures 1–6 and Tables 1–7 (general dimensions, flange/eye/trunnion and side-lug geometries).
• Mounting types (ISO 6099 identification):
  • MF1 - Head, rectangular flange; MF2 - Cap, rectangular flange
  • MF3 - Head, circular flange; MF4 - Cap, circular flange
  • MP3 - Cap, fixed plain eye; MP4 - Cap, detachable plain eye
  • MP5 - Cap, fixed eye with spherical bearing; MP6 - Cap, detachable eye with spherical bearing
  • MS2 - Side lugs; MT4 - Intermediate fixed or movable trunnion (male)
• Piston rod characteristics: Specifies shouldered male-thread rod ends (basic dimensions in Table 1); rod end types referenced to ISO 4395.
• Ports and flanges: Port and flange sizes referenced to ISO 1179-1, ISO 6149-1, ISO 6162 and ISO 6164 (see Table 7).
• Tolerances and strokes: Stroke tolerances and several mounting-dimension tolerances are stroke-dependent (see Tables 8 and 9).
• Identification: Recommended identification statement for manufacturers to declare conformance to ISO 6020-1:2007.

Practical applications and users

ISO 6020-1 is used by:

• Hydraulic cylinder designers and OEMs for compliant cylinder dimensions and accessory interfaces.
• System integrators and machine builders for selecting interchangeable cylinders and ensuring correct mounting and porting.
• Procurement and maintenance teams specifying replacements or spares to guarantee fit and function across suppliers.
• Standards and safety engineers assessing compatibility, pressure ratings and flange selection.

Practical benefits:

• Simplifies sourcing and replacement of cylinders across manufacturers.
• Reduces custom mounting design work by providing standard flange, eye and trunnion dimensions.
• Helps avoid installation issues and fluid-power incompatibilities (note: the standard includes a caution about pressure intensification in rod cavities and the need for higher-rated flanges where applicable).

Related standards

• ISO 1179-1, ISO 6149-1 (ports)
• ISO 3320 (bores and piston rod diameters)
• ISO 4395 (rod end thread types)
• ISO 5598 (vocabulary)
• ISO 6099 (identification code for mounting)
• ISO 6162-1 / ISO 6162-2 and ISO 6164 (flange connectors)
• ISO 8132 (accessory mounting dimensions)

Keywords: ISO 6020-1:2007, hydraulic fluid power, mounting dimensions, single rod cylinders, 16 MPa, 160 bar, medium series, cylinder mounting types, piston rod thread, bore sizes, interchangeability.