Overview
ISO 10190:2008 - Motorcycle chains: Characteristics and test methods specifies the dimensional and mechanical requirements for roller and bush chains used in motorcycle external drives (for example, rear drives). The standard covers chain pitches from 6.35 mm to 19.05 mm, and defines dimensions, tolerances, measurement methods, preloading, minimum tensile strength and minimum dynamic strength. ISO 10190:2008 is the second edition (revising the 1992 edition) and complements other chain standards for transmission and testing.
Key topics and requirements
- Scope and designation
- Applies to motorcycle roller and bush chains in the 6.35–19.05 mm pitch range; chains are designated by ISO chain numbers listed in the standard.
- Dimensions and tolerances
- Detailed pitch, roller diameter, plate widths and related dimensional requirements (see Table 1 in the standard) to ensure interchangeability between manufacturers.
- Mechanical properties and marking
- Minimum tensile strength and minimum dynamic strength requirements are specified per chain number. Chains must be marked with manufacturer identification and chain number.
- Test methods
- Tensile testing (destructive): apply tensile load to a sample (minimum five free pitches) and determine failure at peak force.
- Preloading: chains must be preloaded prior to other checks by applying a specified percentage of the minimum tensile strength.
- Length validation: measure chain length after preloading over a standard length (minimum 610 mm) using specified measuring force.
- Dynamic testing: conformity testing in accordance with ISO 15654, using the minimum dynamic strength values from Table 1. Annex C details how to determine the maximum test force.
- Chain sprockets
- Sprockets for external drives shall conform to ISO 606 or to the alternative sprocket dimensions and tooth forms given in Annex A.
Applications and who uses this standard
ISO 10190:2008 is intended for practical use by:
- Motorcycle chain and sprocket manufacturers (design, production, quality control)
- OEMs and aftermarket suppliers specifying drivetrain components
- Mechanical design engineers and drivetrain system integrators
- Test laboratories performing tensile and dynamic chain testing
- Quality assurance and inspection personnel seeking interchangeability and safety baselines
Practical benefits include assured interchangeability of chains and sprockets, consistent testing procedures for tensile and dynamic performance, and clear marking and measurement protocols that support reliable motorcycle drive designs.
Related standards
- ISO 606 - Short-pitch transmission precision roller and bush chains, associated sprockets
- ISO 15654 - Fatigue test method for transmission precision roller chains
- ISO 286-2 - Limits and fits (tolerance grades referenced for sprocket dimensions)
Keywords: ISO 10190:2008, motorcycle chains, roller chains, bush chains, chain sprockets, tensile strength, dynamic testing, chain dimensions, preloading, length measurement.