Lees Bradner and Red Ring 7HD Gear Hobber Operation and Parts Manual


Lees Bradner Red Ring



Machine types: 

Gear Machine


  • Operators Manual
  • Maintenance Manual
  • Parts Manual
  • Electrical Diagrams
  • Technical Drawings

Detailed and comprehensive Operation, Maintenance and Parts manual for the Less Bradner  7HD single spindle gear hobbing machine. The operation and maintenance manual includes sections on Lubrication

  • Wiring
  • Installation
  • Operation
  • Hob Centering
  • In-Out Unit
  • Headstock Adjustments
  • Calculation of the Lead of Helical Gears
  • Formula for
    • Main Drive Shaft
    • Index Worm
    • Hob RPM
    • Work Spindle Speeds
    • The parts manual consists of numerous labelled sectional drawings of each assembly.
    • Charts, Helical Gear Formulae and Index Diagrams showing which feed gears (changewheels)  to use and how, for spur gears, to arrange the drive system.

All manuals are scanned at high resolution and supplied as a top-quality print, bound and on a superior 129g paper.

Unless otherwise stated, all manuals are in English. We ship world-wide to all destinations.

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