BS ISO 7867-1:2018
$167.15
Metric series for agricultural, forestry machines and construction tyres – Tyre designation, dimensions and marking, and tyre/rim coordination
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 44 |
This document establishes the tyre size designation, the dimensional calculation formulae, the markings and the tyre and rim coordination for the metric series of tyres primarily intended for use on agricultural and forestry tractors, machines, equipment and trailers and for construction machines.
It applies to diagonal, bias-belted and radial tyres mounted on 5° and 15° tapered rims.
NOTE Code designated series of:
diagonal (ply rating marked) tyres for agricultural tractors and machines are specified in ISO 4251‑1 and ISO 4251‑2;
radial (service description marked) tyres for agricultural tractor-drive-wheel tyres are specified in ISO 8664;
tyres for logging and forestry machines are specified in ISO 188071;
tyres for construction/industrial tractors are specified in ISO 13442.
1 Under preparation. Stage at the moment of publication ISO/DIS 18807:2018.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 7 | Foreword |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 10 | 3.1 Tractor drive wheel tyres 4 Tyre size designation 4.1 General 4.2 Tyre type prefixes |
| 11 | 4.3 Nominal section width 4.4 Nominal aspect ratio 4.5 Tyre construction code 4.6 Nominal rim diameter code 4.7 Tyre type suffixes 5 Marking 5.1 General |
| 12 | 5.2 Tyre size designation 5.3 Service description 5.4 Additional information 5.5 Tyre classification and nomenclature |
| 13 | 5.6 Tyre maximum pressure for bead seating pictogram 6 Tyre dimensions 6.1 General 6.2 Calculation of “design tyre” dimensions 6.2.1 General 6.2.2 Theoretical rim width, Rth |
| 14 | 6.2.3 Measuring rim width, Rm 6.2.4 Design tyre section width, S 6.2.5 Design tyre section height, H 6.2.6 Design tyre overall diameter, DO |
| 15 | 6.3 Calculation of “minimum overall tyre dimensions” 6.3.1 Minimum overall width, Wmin 6.3.2 Minimum overall diameter, DO,min 6.4 Calculations of “maximum overall tyre dimensions in service” 6.4.1 General 6.4.2 Maximum overall width in service, Wmax 6.4.3 Maximum overall diameter in service, DO,max 6.5 Coefficients for calculation of tyre dimensions |
| 16 | 7 Tyre dimensional data 8 Method of measurement of tyre dimensions 9 Tyre and rim coordination 9.1 Approved rim widths |
| 17 | 9.2 Approved rim contours 10 Tyre parameters for vehicle speed reference |
| 18 | Annex A (normative) Tyre design dimensions and approved rim width codes |
| 25 | Annex B (normative) Dimensional guidelines for rim widths and nominal rim diameters |
| 27 | Annex C (informative) Approved rim contours for metric agricultural tractor drive wheel and implements tyres on 5° and 15° tapered rims |
| 35 | Annex D (informative) Rolling circumference (RC), rolling circumference index (RCI) and speed radius index (SRI) values for metric drive wheel tyres |
| 42 | Bibliography |
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BS ISO 7867-1:2018 – TC:2020 Edition
Tracked Changes. Metric series for agricultural, forestry machines and construction tyres – Tyre designation, dimensions…
