Machine Work Speed Adjustments - JF D Serie Manual Técnico De Operación

5.3- Machine work speed adjustment
See on page 10 the speed ratio to operate the JF 2D. To have diferent speeds in this zone. Its
necessary change the pulleys combination, that is, use diferents diameters.
The formulas below will hep you to discover which diameter is better to each pulley, according the
desired speed.
Diameter of the
pulley machine
Diameter of
motor's pulley
RPM Machine
RPM Motor
Example of formula aplication
Machine pulley diameter = 90 mm
Motor pulley diameter = ? (this measure will be calculated)
Speed desired to the machine = 4.100 rpm
Motor's speed = 3.500 rpm (this value is an example, because it depends on the power)
2nd Formula: ?* = 90 mm x 4.100 rpm
* In this example, the pulley assembled on the motor shaft should be a diameter or 105 mm.
20
Diameter of
motor's pulley
_________________________________________________
=
Diameter of the
pulley machine
_________________________________________________
=
Diameter of
motor's pulley
_________________________________________________
=
Diameter of the
pulley machine
_________________________________________________
=
3.500 rpm
X RPM Motor
RPM Machine
X RPM Machine
RPM Motor
X RPM Motor
Diameter of the
pulley machine
X RPM Machine
Diameter of
motor's pulley