Filter
Top Products
4 Rotary Mowers
Toro University Technical Training
Theory of Operation
Deck housing
Blade
Blade mounting
and drive system
There are three basic structural members to a rotary cutting unit.
Cutter Deck Housing
The deck housing supports the blade hubs with their drive mechanism and is shaped to carry the cut grass
clippings away from the deck in an effective manner.
Blade mounting and drive system
The blade is normally driven directly by the engine crankshaft, a hydraulic motor or through a belt pulley
system to each blade hub.
The blade
The blade has a sharpened cutting edge at each end with a curved up sail area to create an air flow. This air
flow will whip the grass blades exposing them to the blade cutting edge. The air flow also assists in carrying
the cut grass blades out the discharge.