Owner's Manual
T-8420B, 8450B, 8720B, 8750B 
3. TABLE AND MOTOR 
3
3. TABLE AND MOTOR 
A. Table processing diagram 
y The top of the table should be 40 mm in thickness and should be strong enough to hold the weight and with-stand the 
vibration of the sewing machine. 
y Drill holes as indicated in the illustration below. 
B. Motor 
CAUTION 
All cords should be secured at least 25 mm away from any moving parts. Furthermore, do not excessively bend the 
cords or secure them too firmly with staples, otherwise there is the danger that fire or electric shocks could occur. 
<Motor> 
・ Use one of the clutch motors given in the table at right as the motor. 
・ Refer to the instruction manual for the motor for details on installing 
and using the motor. 
<Motor pulley and V-belt> 
Select the correct motor pulley and V-belt by referring to the table below to suit the power frequency of your area. 
Sewing speed  Frequency  Motor pulley (Outer diameter)  V-belt 
50 Hz  Motor pulley 100  46 
4,000 rpm 
60 Hz  Motor pulley 85  45 
50 Hz  Motor pulley 90  45 
3,500 rpm 
60 Hz  Motor pulley 70  44 
50 Hz  Motor pulley 75  44 
3,000 rpm 
60 Hz  Motor pulley 65  43 
Power Motor 
Single-phase  2-pole, 400 W motor 
Three-phase  2-pole, 400 W motor 
Motor mounting holes
Head rest hole
Ground wire hole
Cotton stand hole
2958M










