Sliding gear

Sliding gear for four gear ratios and reverse gear : By moving the spur gears I , II , III and IV , the drive shaft M is brought into engagement with the output shaft C. The direction of rotation is reversed by shifting the reverse wheel R to the left until it engages wheels IV and 4.

A sliding gear is a multi- speed gear in which the various gear ratios are inserted by axially shifting gear blocks on a gear shaft . In sliding gear drives, the gear wheels are almost always straight toothed and the hubs and shafts are fitted with splines , so they cannot be rotated on each other.

The wheels can be moved by hand, by hydraulic or pneumatic cylinders or electrically. Slider gears cannot be switched under load and only when there are small differences in speed between the two shafts or when the system is stationary.