Overview
ISO 22917:2016 - "Precision superabrasives - Limit deviations and run-out tolerances for grinding wheels with diamond or cubic boron nitride (CBN)" - defines essential geometric tolerances and run-out limits for rotating precision superabrasive tools. The standard applies to diamond and CBN grinding wheels and mounted points with metal, vitrified or resinoid bonded cores, including products with circular bores for clamping flanges and cylindrical spindles for collets. ISO 22917:2016 is the second edition and replaces the 2004 version.
Key topics and technical requirements
- Scope and product types: peripheral and face grinding wheels, mounted points, and metal-core wheels for hand-held grinding.
- Limit deviations (dimensional tolerances): defined for outside diameter, bore diameter, overall thickness, thickness at bore, rim width, radii and angles, depth and thickness of the superabrasive section, and spindle dimensions.
- Run-out tolerances: axial and radial circular run-out limits for outside diameters and spindles.
- Designation and shape conventions: standardized designations for straight, recessed, tapered, hubbed, cup and other wheel shapes.
- Normative references: delegates linear size tolerancing to ISO 286-1 and ISO 286-2 (e.g., bore tolerances correspond to the H7 tolerance zone).
- Tables and figures: prescriptive tables give the limit deviations and run-out values by size ranges (outside diameter ranges, bore sizes, thickness ranges, etc.), plus sketches for common abrasive section shapes and wheel cores.
Examples in the standard include bore tolerances aligned with ISO 286-2 (H7) and specific outside-diameter and run-out classes by diameter range; users should consult the full standard tables for exact numerical limits.
Practical applications
- Ensuring interchangeability and safe high-speed rotation of precision diamond and CBN grinding wheels.
- Specifying manufacturing and inspection requirements for tool makers and suppliers of superabrasives.
- Verifying balancing and run-out performance for grinding operations in precision toolrooms, optics, electronics, automotive and aerospace component finishing.
- Supporting procurement and quality control by providing unambiguous tolerance classes for drawing callouts and inspection criteria.
Who should use ISO 22917:2016
- Manufacturers of diamond and CBN grinding wheels and mounted points
- Grinding tool designers and engineers specifying tool geometries
- Quality assurance, metrology and inspection teams in abrasive production
- OEMs and end users in precision grinding, toolmaking, optics, automotive and aerospace industries
- Procurement professionals requiring standardized tolerance language in contracts
Related standards
- ISO 286-1, ISO 286-2 - Geometrical product specifications: ISO code system for tolerances on linear sizes (basis for bore/shaft tolerancing referenced by ISO 22917).
Keywords: ISO 22917, precision superabrasives, diamond grinding wheels, CBN grinding wheels, run-out tolerance, limit deviations, grinding wheel tolerances, H7 bore tolerance.