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BS 3790:1995

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Specification for endless wedge belt drives and endless V-belt drives

Available format(s)

Hardcopy , PDF

Superseded date

28-04-2006

Language(s)

English

Published date

15-06-1995

€231.38
Excluding VAT

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

Specifies the dimension and certain other properties of endless wedge belts and V-belts and their corresponding grooved pulleys when used for power transmission. Does not apply to industrial variable speed drives that use pulleys with movable flanges.

Committee
W/-
DevelopmentNote
Supersedes 91/76387 DC and BS 3790(1981) (07/2005)
DocumentType
Standard
Pages
34
PublisherName
British Standards Institution
Status
Superseded

Standards Relationship
ISO 155:1998 Similar to
ISO 4184:1992 Similar to
ISO 4183:1995 Similar to

ISO 4183:1995 Belt drives — Classical and narrow V-belts — Grooved pulleys (system based on datum width)
BS 6861-1:1987 Mechanical vibration. Balance quality requirements of rigid rotors Method for determination of permissible residual unbalance
BS AU 150b:1984 Specification for automotive V-belts and pulleys
ISO 5292:1995 Belt drives V-belts and V-ribbed belts Calculation of power ratings
BS EN 20340:1993 Conveyor belts. Flame retardation. Specifications and test method
ISO 1081:1995 Belt drives V-belts and V-ribbed belts, and corresponding grooved pulleys Vocabulary
ISO 1813:2014 Belt drives — V-ribbed belts, joined V-belts and V-belts including wide section belts and hexagonal belts — Electrical conductivity of antistatic belts: Characteristics and methods of test
BS 1913:1990 Specification for soft soap
ISO 254:2011 Belt drives — Pulleys — Quality, finish and balance
ISO 155:1998 Belt drives Pulleys Limiting values for adjustment of centres
ISO 9608:1994 V-belts Uniformity of belts Test method for determination of centre distance variation
ISO 4184:1992 Belt drives — Classical and narrow V-belts — Lengths in datum system

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