Hyd-Mech S-20 Series II, Manual

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PG 2.6
CHANGING BEL CHANGING BEL
CHANGING BEL CHANGING BEL
CHANGING BELT POSITION T POSITION
T POSITION T POSITION
T POSITION
To change the blade speed of the S-20 Series II it is necessary to release the V belt tension and
move the V belt to another set of pulley grooves. The tension on the V belt is maintained by means of a
toggle handle assembly that moves the motor. As the handle is moved to its locking position the motor is
driven tight against the V belt. The toggle handle can be adjusted to change the effective tension on the V
belt by setting the lock nuts which mount the handle to the motor mount plate. The motor mount plate
pivots on rubber bushings that support the motor.
Blade Speed T Blade Speed T Blade Speed T Blade Speed T Blade Speed Tensioning Sy ensioning Sy ensioning Sy ensioning Sy ensioning System stem stem stem stem
BL BL BL BL BLADE SPEED SELECTION ADE SPEED SELECTION ADE SPEED SELECTION ADE SPEED SELECTION ADE SPEED SELECTION
The blade speed of the S-20 Series II can be changed between four different speeds. The speed is
determined by the ratio of the pulleys that drive the V belt. The four pulley sets give the optional speeds
of 90,140,220, and 310 Surface Feet Per Minute.
APPROXIMATE BLADE SPEED
Ratio 1 2 3 4
Ft/Min 90 140 220 310