ISO 10285:2007/Amd 1:2012

Overview

ISO 10285:2007/Amd 1:2012 is an important amendment to the international standard specifying boundary dimensions and tolerances for sleeve type linear ball bearings. Published by the International Organization for Standardization (ISO), this amendment provides refined tolerancing guidelines critical to the design, manufacture, and quality control of linear ball bearings with recirculating balls housed in sleeve-type constructions.

The document updates and corrects tolerance classes within the original ISO 10285:2007, ensuring enhanced precision in linear bearing applications. It addresses dimensional accuracy and permissible deviations, key to maintaining reliable and consistent linear motion performance in mechanical systems.

Key Topics

• Sleeve Type Linear Ball Bearings
  Focuses specifically on linear ball bearings characterized by having a sleeve or manchon design, which guides linear motion with reduced friction and high precision.

• Boundary Dimensions
  Defines the exact physical dimensional limits such as inner diameter (d), outer diameter (Dmp), and width (ws min), which are essential for compatibility with mating components.

• Tolerance Classes
  Introduces detailed tolerance grades like L9, L7, L6, and subclasses (L7A, L6A, L6J, L6JA) with associated symbols and specific upper and lower deviation limits to ensure consistent manufacturing quality.

• Tolerance Symbols and Notes
  Includes a tabular classification of tolerance symbols (e.g., h6, IT7) with footnotes explaining specific conditions, such as applicability to plastic molded components and special tolerance cases.

• Correction and Clarifications
  Amendment 1 corrects previous tolerance specifications, notably revising Table A.1 to better reflect the tolerancing needs for sleeve type linear bearings.

Applications

ISO 10285:2007/Amd 1:2012 is essential for industries and engineers involved in:

• Precision Machinery
  Where linear ball bearings must maintain tight dimensional control to ensure smooth and accurate motion, such as CNC machines or industrial automation equipment.

• Automotive Manufacturing
  For components requiring linear motion guidance with minimized friction and wear, enhancing product lifespan and operational reliability.

• Robotics
  Enabling precise and repeatable movement in robotic arms and actuators by standardizing bearing dimensions and tolerances.

• Aerospace and Defense
  Where linear bearing components must meet rigorous standards for performance and interchangeability under demanding conditions.

• Quality Control and Inspection
  Facilitates acceptance criteria for linear bearing batches ensuring they conform to international tolerancing standards, reducing production defects and compatibility issues.

Related Standards

For comprehensive understanding and integration, ISO 10285:2007/Amd 1:2012 relates to:

• ISO 10285:2007 (Base Standard) - The original specification for sleeve type linear ball bearings, serving as the foundation for this amendment.

• ISO/TS 16281 - Tolerancing guidelines for linear motion rolling bearings, providing supplementary information on fitting and assembly tolerances.

• ISO 492 - Radial ball bearing boundary dimensions and tolerances, which can apply to rolling element bearings in related mechanical assemblies.

• ISO/TC 4 Subcommittee Documentation - Covering all aspects of rolling bearings, including terminology, performance evaluation, and testing methods.

Keywords: ISO 10285 amendment, sleeve type linear ball bearings, linear motion bearings, boundary dimensions, tolerance classes, dimensional tolerances, rolling bearings standard, precision linear bearings, linear ball bearing tolerances, ISO rolling bearings