ISO 2421:2003

Overview

ISO 2421:2003 - Coated abrasives - Cylindrical sleeves - is an International Standard that specifies the dimensions, tolerances and test conditions for cylindrical abrasive sleeves used on holding fixtures for both hand-held and stationary grinding machines. It defines how coated abrasive sleeves should be sized, tested and marked to ensure interchangeability and consistent performance with holding fixtures specified in ISO 15637-1 and ISO 15637-2.

Key topics and requirements

• Scope: Applies to cylindrical abrasive sleeves mounted on holding fixtures for hand-held grinding machines (ISO 15637-1) and stationary machines (ISO 15637-2).
• Dimensions and tolerances: Provides standardized dimension and tolerance tables separated for sleeves with diameters ≤ 100 mm and for those > 100 mm, covering width (T), diameter (D) and joint types (for example, straight and spiral joint methods).
• Test conditions / conditioning:
  • Temperature: 20 °C ± 2 °C
  • Relative humidity: (65 ± 5) %
  • Storage before test: Sleeves shall be conditioned for at least 24 hours under the specified atmosphere in accordance with ISO 554 (standard atmospheres for conditioning/testing).
• Designation and marking:
  • Designation format includes the term “Cylindrical sleeve”, reference to ISO 2421, Type (A or B), diameter (D) and width (T).
  • Marking must include dimensions D and T and the manufacturer’s name or registered trademark.
• Referenced documents: Normative references include ISO 554, ISO 15637-1 and ISO 15637-2; the standard was prepared by ISO/TC 29/SC 5 (Grinding wheels and abrasives).

Applications and who uses this standard

ISO 2421 is directly useful for:

• Manufacturers of coated abrasive sleeves - for production tolerances, quality control and correct marking of products.
• Tooling and fixture designers - to ensure sleeves match holding fixtures on hand-held and stationary grinding machines.
• Quality laboratories and test houses - to perform conditioning and dimensional verification under specified atmospheres.
• Purchasing and specification engineers - to write clear procurement specifications and ensure interchangeability across suppliers.
• Safety and maintenance teams - to select correctly sized abrasive sleeves for machinery compatibility and safe operation.

Related standards

• ISO 15637-1 - Holding fixtures of cylindrical abrasive sleeves (hand-held machines)
• ISO 15637-2 - Holding fixtures of cylindrical abrasive sleeves (stationary machines)
• ISO 554 - Standard atmospheres for conditioning and/or testing

Keywords: ISO 2421, cylindrical abrasive sleeves, coated abrasives, dimensions, tolerances, test conditions, ISO 15637, ISO 554, holding fixtures.