Toro 09167SL User Manual

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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.