BS 3876-2:1990

Committees responsible
Foreword
Specification
1. Scope
2. Definitions
3. General
4. Shape and dimensions of pulley components and
    mountings
5. Materials
6. Manufacture
7. Marking
Appendices
A. Information to be supplied by the purchaser
B. Information to be provided by the supplier
C. General recommendations for the design and
    operating speeds of pulleys
D. Typical clause relating to inspection that the
    purchaser may choose to write into his order or
    contract for the supply of pulleys, mountings
    and assemblies to this Part of BS 3876
Tables
1. Dimensions of vertical spindle pulleys
2. Bearing characteristics and designations for
    vertical spindle pulleys
Figures
1. Typical vertical spindle pulley type 1
2. Typical vertical spindle pulley types 2 and 3

Gives requirements for vertical spindle rope pulleys, mountings, and assemblies for use in colliery track haulage. Applies to pulleys, supplied without mountings, with throat diameters less than 300 mm, mountings and pulley assemblies that comprise both the pulleys and the mountings. Intended to deflect the haulage rope horizontally through small angles around each pulley from its straight line direction of travel. Covers definitions, materials, manufacture, and marking.

This Part of BS 3876 specifies requirements for vertical spindle rope pulleys, mountings and assemblies intended for use in colliery track haulage.

NOTE 1 Where the word “vertical?? is used in this Part it refers to the installed position of the spindle.

This Part of BS 3876 applies to:

1. pulleys, supplied without mountings, with throat diameters less than 300 mm;
2. mountings; and
3. pulley assemblies that comprise both the pulleys and the mountings.

The pulleys to which this Part applies are those intended to be used to deflect the haulage rope horizontally through small angles around each pulley (i.e. up to about 10°, see Appendix C) from its straight line direction of travel.

NOTE 2 Appendix A gives the information which should be supplied by the purchaser, in his enquiry and/or order for pulleys, mountings and assemblies in accordance with this Part of BS 3876.

NOTE 3 Appendix B gives the information that will be required by the purchaser, to be supplied by the supplier, prior to the supply of pulleys, mountings and assemblies in accordance with this Part of BS 3876.

NOTE 4 Appendix C gives general recommendations for the design and operating speeds for colliery track haulage pulleys with vertical spindles.

NOTE 5 No inspection requirements are specified in this Part of BS 3876. However, a typical requirement that a purchaser may choose to write into his order or contract for pulleys, mountings and assemblies to this Part is given in Appendix D.

NOTE 6 The titles of the publications referred to in this Part of BS 3876 are listed on the inside back cover.