Instruction manual

2. Installation
5
VG3511-8F
2.3 Motor, belt and pulley
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 with toeing down the pedal.
Note: Table 1 shows the outside diameter of the motor
pulley, rpm of the machine, and size of the belt
when using the clutch motor of 3-phase, 2-pole,
400W(1/2HP).
Fig. 2-5
Table 1
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.
M-type of V-belt
64.5 ㎜
5.5 ㎜
10 ㎜
40°
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.
Table 2
Servomotor:
Calculate the outside diameter of a motor pulley from the
formula as below.
Or see Table 2 to select a proper motor pulley.
Outside diameter Usual sewing speed
of motor pulley Servomoter speed
Belt
Use a V-belt of M type.
For belt size, refer to Table 1.
= × 64.5 + 5 mm
Outside
diameter
of pulley
(㎜)
Sewing speed
of machine
(sti/min)
Size of belt
50 Hz 60 Hz
Semi-
submerged
Fully-
submerged
90 4600 M40 M33
95 4850 M40 M34
100 5100 M41 M34
105 4550 5350 M41 M34
110 4750 M41 M35
115 5000 M42 M35
120 5200 M42 M35
125 5400 M42 M36
Sewing speed
of machine
(sti/min)
Outside diameter
of motor pulley ( ㎜ )
rpm of servomotor
3000 rpm 3600 rpm
4200 95 80
4500 102 86
4700 106 89
5000 113 95
5500 117 98
5500 123 104