BS 3790:1995

Committees responsible
Foreword
Specification
1. Scope
2. References
3. Definitions
4. Wedge belts and V-belts
5. Grooved pulleys
Annexes
A. (informative) Recommendations for drive design
B. (informative) Recommended practice for installation
     tension in belt drives and calculation of resultant
     force imposed on the shaft
C. (informative) Storage of belts
D. (informative) Comparison of the definitions of the
     terms, 'pitch width' in BS 3790, and 'datum width'
     in ISO 1081
E. (normative) Determination of belt pitch length
F. (normative) Tests for electrical resistance of belts
G. (normative) Test for fire resistance of belts
Tables
1. Belt cross section dimensions
2. Tolerances and force requirements when measuring new
     belts
3. Dimensions of pulleys for measuring lengths of new
     belts
4. Nominal pitch lengths of wedge belts and V-belts
     and permitted tolerances
5. Fire resistance of belts
6. Surface finish of pulleys
7. Dimensions of standard grooved pulleys for wedge and
     V-belt drives
8. Preferred pulley pitch diameters
A.1 Service factors for belt drives
A.2 Standard base lengths Lo for power rating formulae
B.1 Deflection force required for measuring installation
     tension in wedge and V-belt drives
E.1 Centre distance variation delta C on measuring fixture
Figures
1. Belt cross sections
2. Basic belt construction
3. Pulley limiting rotational speed indicating limits
     for static or dynamic balancing
4. Multi-groove pulley cross section
A.1 Selection of wedge belt cross section
A.2 Selection of V-belt cross section
B.1 Belt deflection measurement
E.1 Measuring pulley and apparatus for measuring belt
     length
F.1 Apparatus for measuring the electrical resistance
     of belts
G.1 Arrangement of burner apparatus for flame test
G.2 Cabinet for flame test
List of references