JF 2D - Work Speed Adjustment

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5.3- Machine work speed adjustment
See on page 10 the speed ratio to operate the JF 2D. To have different speeds in this zone. Its
necessary change the pulleys combination, that is, use different diameters.
The formulas below will hep you to discover which diameter is better to each pulley, according
the desired speed.
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
3.500 rpm
* In this example, the pulley assembled on the motor shaft should be a diameter or 105 mm.
(F1) 1°
(F2) 2°
(F3) 3°
(F4) 4°
Diameter of
motor's pulley
X RPM Motor
Diameter of the
pulley machine
=
RPM Machine
Diameter of the
pulley machine
X RPM Machine
Diameter of
motor's pulley
=
RPM Motor
Diameter of
motor's pulley
X RPM Motor
RPM Machine =
Diameter of the
pulley machine
Diameter of the
pulley machine
X RPM Machine
RPM Motor =
Diameter of
motor's pulley
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OPERATION TECHNICAL MANUAL - MILL JF 2D
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