Adjusting The Feed Mechanism; Motor Pulley And Sewing Speed - JUKI LZH-1290 Instruction Manual

18. ADJUSTING THE FEED MECHANISM

WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that the
motor has totally stopped rotating in prior.

19. MOTOR PULLEY AND SEWING SPEED

1) Use the 3-phase 400 W AC clutch motor.
2) Use an M type V belt.
3) The following table shows the relationship among the motor pulley and the sewing speed.
Model Sewing speed
LZH-1290 2,000 sti/min
(Caution) The effective diameter of the motor pulley is obtained by subtracting 5 mm from the outside diameter.
Effective diameter of Number
handwheel of poles
φ 67.4 4
Rotational speed
Frequency
of motor
50 Hz 1,430 rpm
60 Hz 1,715 rpm
– 9 –
Effective diameter
of motor pulley
φ 95
φ 80