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Rotary Mowers 5
Toro University Technical Training
Power transfer from the engine to the blades is
typically done by way of belts and transfer shafts.
Belt drives typically transfer a high percentage of
the available horsepower to the blade and generally
produce much less noise than hydraulic drive
systems.
Blade spindle assembly
Large Diameter
Ductile Cast Iron
Spindle Support
Ductile cast iron,
stronger than
aluminum or
regular cast iron
Timken
®
Tapered
Roller Bearings
Support spindle
shaft better than
ball bearings
50% more load
carrying capacity
than ball bearings
Solid Cold Finished
Steel Spindle Shaft
Large diameter shaft is
resistant to torsion and
bending failure
Blade Retainer &
Anti-Scalp Cup
Eliminates blade
slippage and protects
turf from damage
The deck spindles usually run at approximately 2000 to 2500 RPM. They feature tapered roller bearing for
impact resistance and durability. The bearings can be greased, and if done properly can ensure long life
while also purging contaminates from the assembly.