The history of gears is probably as old as civilization itself. And yet today, the
importance of gears in manufacturing industry is undwindling and even more growing.
The purpose of this handbook is to provide an outline of gear fundamentals for those
who want to acquire knowledge about mechanics of gears. In reading through this
handbook, if you have any questions please refer them to us and we would be happy to
W.M. Berg manufactures several styles of gears. Each gear has and serves its own particular application. Listed below are brief
descriptions and application notes for the variety of available styles. Further information can be obtained from numerous gear and
mechanical design handbooks, or by contacting our engineering department
Spur Gears are the most recognized style of gear. Spur Gears are used exclusively to transmit rotary motion between parallel shafts,
while maintaining uniform speed and torque.
Harold L. Johnson, Ph.D. Associate Professor Emeritus School of Mechanical Engineering Georgia Institute of Technology Atlanta, Georgia
46.1 ORDINARY GEAR TRAINS/46.1 46.2 GEAR TYPE SELECTION / 46.3 46.3 PLANETARY GEAR TRAINS / 46.5 46.4 DIFFERENTIAL TRAINS/46.14 REFERENCES/46.16
ORDINARY GEAR TRAINS
Gear trains consist of two or more gears meshed for the purpose of transmitting motion from one axis to another. Ordinary gear trains have axes, relative to the frame, for all gears making up the train. Figure 46.