Overview
ISO 9409-2:2002 - "Manipulating industrial robots - Mechanical interfaces - Part 2: Shafts" specifies the main dimensions, designation and marking for a shaft with a cylindrical projection used as a mechanical interface between robots and hand‑mounted end effectors. The standard ensures interchangeability and preserves end‑effector orientation for a wide range of small‑to‑moderate robot handling applications. It does not define load‑carrying ranges.
Key topics and requirements
- Mechanical interface types: Two types are defined
- Type 1: Shaft without an orientation slot
- Type 2: Shaft with a slot for end‑effector orientation (mating pin)
- Dimensions and series: Preferred Series 1 dimensions and a supplementary Series 2 are specified for shaft diameter, projection length and reference features.
- Coordinate system & orientation: Origin at intersection of shaft axis and reference plane; +Z points away from the origin; flat surface/slot aligned to +X to control orientation.
- Tolerancing: Dimensional tolerances follow ISO 286 (limits and fits); geometric tolerances per ISO 1101; shaft diameter is the datum for geometric tolerances.
- End‑effector mating: Mating surfaces must be compatible with the shaft dimensions; the optional slot (b × l) is for a parallel pin on the end effector to maintain orientation.
- Designation and marking: Interfaces are designated with a simple code (example: ISO 9409-2 – T1 – 10) and shall be permanently marked with that code.
- Service routing: Provision for threaded or through holes and hollow shafts for routing cables, piping or air is recommended where applicable.
- Application limits: Intended for robots with relatively small load capacity; use ISO 9409‑1 (plates) where higher load capacity is required.
Applications and users
- Who uses it: robot manufacturers, end‑effector and gripper suppliers, automation system integrators, mechanical designers, maintenance and procurement teams.
- Practical uses:
- Quick interchange of grippers and tools while preserving orientation
- Small robot handling stations, pick‑and‑place units, master‑slave manipulators
- Simple tool‑change interfaces for light‑duty automation cells
- Standardizing mechanical interfaces across vendors to reduce custom tooling
Related standards
- ISO 9409‑1:1996 - Plates (other part of the same series)
- ISO 8373 - Robot vocabulary
- ISO 286 - Limits and fits (tolerancing)
- ISO 1101 - Geometrical product specifications (GPS)
- ISO 9787 - Coordinate systems and motion nomenclatures
Keywords: ISO 9409-2:2002, mechanical interfaces, robot shafts, end effector interface, shaft dimensions, designation and marking, robot tool changer, pick-and-place.