8
VF2400
2. Installation
2.3 Motor, pulley and belt
Fig. 2-10
Table 2
M type of V-belt
58 ㎜
5.5 ㎜
10 ㎜
40°
See the instruction manual for the motor used and install
the motor properly.
Clutch motor:
To install the clutch motor, align the center of the machine
pulley with that of the motor pulley when the motor pulley
shifts to the left while toeing down the pedal.
Note: Table 2 shows the outside diameter of the motor
pulley, sewing speed of the machine, and size of the
belt when using a clutch motor of 3-phase, 2-pole,
550 W (3/4 HP).
The outside diameter on the table shows the near-
est size to the calculated values based on the com-
mercial available pulleys at intervals of 5 mm.
Use only those motor pulleys applicable to the machine. If
not applicable, the sewing machine will be over maximum
and it can cause the damage to the machine.
Servomotor:
Use a servomotor with 500 W or more.
Calculate the outside diameter of a motor pulley from the
formula as below.
Or see Table 3 to select a proper motor pulley.
Outside diameter Usual sewing speed
of motor pulley Servomoter speed
= × 58 + 5 mm
Table 3
Outside
diameter of
pulley
( ㎜ )
Sewing speed
of machine
(sti/min)
Belt size
50 Hz 60 Hz Table top
Semi-
submerged
80
4500
M33
M34
85
4800
M33
M34
90
5100
M34
M35
95
4500
5350
M34
M35
100
4800
5650
M34
M35
105
5000
5950
M35
M36
110
5250
6200
M35
M36
115
5500
6500
M35
M36
120
5750
6800
M36
M37
125
6000
M36
M37
130
6200
M36
M38
135
6450
M37
M38
140
6700
M37
M38
145
6950
M38
M39
Sewing speed
of machine
(sti/min)
Outside diameter of motor pulley
(mm)
rpm of servomotor
3000 rpm
3600 rpm
4200
86
73
4500
92
78
4700
96
81
5000
102
86
5200
106
89
5500
111
94
5800
117
98
6000
121
102
6200
125
105
6500
131
110
7000
140
118