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2. Installation
4
CZ8000
Use only those motor pulleys applicable to the machine.
If not, the sewing speed will be over maximum and the
machine will be damaged.
2.2 Motor, pulley and belt
See the instruction manual for the motor to use and install
the motor properly.
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 by 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 the clutch motor of 3-phase,
2-pole, 400 W(1/2HP).
The outside diameter on the table shows the near-
est size to the calculated values based on the com-
mercial pulleys at intervals of 5 ㎜.
Fig. 2-4
Table 2
V-belt of M-type
Servomotor:
Calculate the outside diameter of a motor pulley from the
formula as below.
Or see Table 3 to select a proper motor pulley diameter.
Outside diameter Usual sewing speed
of motor pulley Servomotor speed
= × 48.5 + 5 mm
Table 3
Belt
Use a V-belt of M type.
For belt size, refer to Table 2.
Outside
diameter of
pulley (㎜)
Sewing speed
of machine
(sti/min)
Size of belt
50Hz
60Hz
Semi-submerged
90
6000
M34
95
6400
M34
100
6700
M35
105
5900
7000
M35
110
6200
7200
M35
115
6500
7500
M36
120
6700
7700
M36
125
6850
8000
M37
130
7000
M37
135
7300
M37
140
7500
M38
145
7800
M38
150
8000
M38
Sewing speed
of machine
(sti/min)
Outside diameter of motor
pulley(㎜)
rpm of servomotor
3000 rpm
3600 rpm
6000
102
86
6200
105
89
6500
110
93
6700
113
95
7000
118
99
7200
121
102
7500
126
106
7700
129
109
8000
134
113