Brother International T-8420B Instruction Manual - English - Page 9

3. TABLE AND MOTOR 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. Cotton stand hole Ground wire hole Head rest hole Motor mounting holes 2958M 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. ・ 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. Power Single-phase Three-phase Motor 2-pole, 400 W motor 2-pole, 400 W motor Select the correct motor pulley and V-belt by referring to the table below to suit the power frequency of your area. Sewing speed 4,000 rpm 3,500 rpm 3,000 rpm Frequency 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz Motor pulley (Outer diameter) Motor pulley 100 Motor pulley 85 Motor pulley 90 Motor pulley 70 Motor pulley 75 Motor pulley 65 V-belt 46 45 45 44 44 43 3 T-8420B, 8450B, 8720B, 8750B