BS ISO 5288:2017
Synchronous belt drives. Vocabulary
- Standard No.
- BS ISO 5288:2017
- Release Date
- 2020
- Published By
- British Standards Institution (BSI) GB / BSI
- Status
- 2024-11
- Replace By
- BS ISO 5288:2024
- Latest
- BS ISO 5288:2024
- Introduction
Standard Overview and Technology Evolution
BS ISO 5288:2017 is the core terminology standard in the field of synchronous belt transmission. The main updates that replace the 2001 version include:
- Added a new terminology system for curved toothed synchronous belts
- Improved the definition of pulley groove generation tools
- Unified parameter definitions under measurement force conditions
Core terminology system analysis
Synchronous belt classification system
Classification dimensions Trapezoidal toothed belts Curved toothed belts Tooth profile definition 3.2.2.1 Pure straight lines constitute tooth flanks and tooth tops 3.2.2.2 Tooth profile with curved profile Typical applications High torque transmission scenario High speed and low noise working condition Key geometric parameters
Pitch line difference (a value): The radial distance between the pitch line and the tooth root line defined in 3.2.1.4, which directly affects the meshing accuracy
Tooth pitch (Pb): The linear distance between adjacent tooth axes under the action of measuring force specified in 3.2.1.2
Pulley system technical specifications
Groove geometric characteristics
- Working tooth surface (3.3.2.8): Contact surface when transmitting power
- Groove angle 2ϕ (3.3.2.14): Key angle parameter that determines meshing characteristics
Measurement specifications
The standard specifically stipulates the technical requirements for measuring pulleys (3.3.1.9):
- Precise processing is required to ensure the groove shape and position tolerance
- The measurement gap Cm (3.3.1.10) must be controlled to ≤0.1mm
Implementation suggestions
Key points for design application
Parameters Belt body design Pulley matching Tooth height ht 3.2.5.4 definition value Should be greater than groove depth hg(3.3.2.6) Pitch line length Lp 3.2.1.5 calculation value Need to match the pulley pitch circle circumference Maintenance and inspection specifications
- Regularly check the wear of the working tooth surface (refer to the definition in 3.2.5.6)
- Use the measuring force specified in the standard to detect the center distance C (3.1.2)
BS ISO 5288:2017 history
- 2024 BS ISO 5288:2024 Synchronous belt drives. Vocabulary
- 2020 BS ISO 5288:2017 Synchronous belt drives. Vocabulary
- 2001 BS ISO 5288:2001 Synchronous belt drives - Vocabulary
