Overview
ISO 5678:1993 - "Agricultural machinery - Equipment for working the soil - S-tines: main dimensions and clearance zones" defines the principal geometric requirements for S-type harrow and cultivator tines. The second edition (1993) replaces the 1979 edition and extends the specification to include S-tine types 0, 1, 2 and 3. The standard gives main dimensions (in millimetres) and specifies clearance zones to ensure interchangeability, safe operation and consistent manufacturing of tillage equipment components.
Key topics and technical requirements
- Scope: Main dimensions and clearance zones for S-type harrow and cultivator tines used in agricultural soil working.
- Figures and dimensional data: Main dimensions are provided in figures 1–4 and clearance-zone profiles in figures 5–8. All dimensions are expressed in millimetres.
- Nominal material dimensions: The standard lists typical cross-section sizes per tine type (for example, type 0 and type 1 through type 3 have specified nominal material dimensions in the figures).
- Lower-part conformity: Dimensions of the lower part of a tine are to be in accordance with types 1 and 2 as specified in ISO 5680 (normative reference).
- Unspecified details: Dimensions not explicitly indicated in the standard are left to the manufacturer’s discretion, enabling adaptation where appropriate while preserving essential interface dimensions.
- Clearance zones: Defined for each tine type to guide safe mounting, movement and interaction with adjacent components.
Applications
- Ensuring interchangeability of S-tines across different cultivator and harrow models.
- Guiding manufacturers in tooling and production to meet consistent dimensional standards for tillage parts.
- Supporting design engineers and OEMs in specifying compatible tines for implements.
- Enabling aftermarket suppliers and maintenance operations to source and replace tines with confidence.
- Helping testing and certification bodies assess whether tines meet established dimensional and clearance requirements.
Who uses this standard
- Agricultural machinery manufacturers and component suppliers
- Mechanical design engineers for tillage equipment
- Procurement specialists specifying replacement parts
- Standards committees and regulatory authorities
- Maintenance workshops and aftermarket parts distributors
Related standards
- ISO 5680 - Equipment for working soil - Tines and shovels for cultivators - Main fixing dimensions (normative reference cited in ISO 5678).
Keywords: ISO 5678, S-tines, agricultural machinery, cultivator tines, harrow tines, clearance zones, dimensions, tillage equipment, ISO 5680.
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