BOM-L Clutches. (by Crofts of Bradford). A detailed 44-page catalog with Instruction Sheets for Erections and Maintenance that shows the complete range of clutches in cross sections together with tables of essential data.

CROFTS Variable-Speed Motor Units and Variable-speed Drive Pulleys
Automatic and Stationary Adjustment Types. Installation, Maintenance,
Lubrication and Belt Changing Manual. 2 pages