SPUR GEAR

INTRODUCTION

When it is required to transmit power from one shaft to another parallel to each other at long distance, we use wire rope or flat belts. 
For moderate distances,
V-belts is used for the said purpose. The shafts situated at minimum distances are  provided with gears. 
The only requirement for transmit power is the exact central distance between shafts. 
They previous methods cannot be used to get exact velocity ratio due to slipping between belts and pulleys, therefore toothed wheel or gears are used.