ISO 702-2:2007

Overview

ISO 702-2:2007 - "Machine tools - Connecting dimensions of spindle noses and work holding chucks - Part 2: Camlock type" - is an international standard that specifies the sizes and tolerances for interchangeability of cylindrical spindle noses and the corresponding connecting faces of face plates or work-holding chucks using the camlock system. Published as the second edition (2007-10-15), the document replaces the earlier 1975 edition and standardizes mechanical interfaces to ensure compatibility across manufacturers.

Key Topics

• Scope and interchangeability
  • Applies to camlock-type spindle noses, face plates and chucks.
  • All dimensions and tolerances are expressed in millimetres.
  • Provides for interchangeability between metric and inch-series spindle noses and face plates (internal components and screws may differ).
• Sizes and dimensional data
  • Defines sizes (Size Nos. 3 to 20) and corresponding dimensional tables for critical features.
  • Includes general tolerances (note: untoleranced dimensions have a general tolerance of ±0.4 mm).
• Detailed component dimensions
  • Spindle noses - primary mating geometry and reference lines.
  • Cams - dimensions, slopes and fit parameters for camlock elements.
  • Studs - stud dimensions and thread specifications used to attach accessories.
  • Face plates - mating-face dimensions, two face-plate types and marking requirements.
  • Accessories - standardized sizes for hexagon-socket screws, stop-bolts, cheese-head screws, etc.
• Practical specification notes
  • Type identification of face plates is required.
  • The standard is part of the ISO 702 series (other parts cover conical, bayonet, and cylindrical connections).

Applications

ISO 702-2 is used wherever consistent mechanical coupling between spindles and workholding devices is required:

• Machine tool designers specifying spindle nose geometry for camlock chucks.
• Chuck and face-plate manufacturers producing parts to a common interface for interchangeability.
• Maintenance and retrofit teams replacing or upgrading chucks, face plates or spindle noses.
• Procurement and quality control creating acceptance criteria and inspection plans for machine-tool accessories.
• CNC shops and job shops ensuring that chucks sourced from different suppliers will mate correctly with existing spindles.

Benefits include faster equipment changeovers, reduced custom machining, and simplified spare-parts management.

Related Standards

• ISO 702-1: Part 1 - Conical connection
• ISO 702-3: Part 3 - Bayonet type
• ISO 702-4: Part 4 - Cylindrical connection

Keywords: ISO 702-2, camlock spindle nose, spindle nose dimensions, workholding chucks, face plates, machine tool standards, interchangeability, cams and studs.