– 8 –
2. selecting the motor pulley and the belt /
马达皮带轮、皮带的选定方法
* The table shows the numbers when a 3-phase 2-pole 400 W clutch motor (1 / 2 HP) is used.
* The commercially-available motor pulley near to the counted value is designated since the outside diameter of the
commercially-available motor pulley counts by 5 mm.
use a motor pulley which is adaptable to this sewing machine. the sewing speed exceeds the max.
sewing speed of this sewing machine and machine trouble will be caused unless a motor pulley which is
adaptable to this sewing machine is used.
Motor pulley and belt
Speed of stitch
(sti/min)
MF-7200D
50Hz
60Hz
Pulley size
Belt size
Pulley size
Belt size
3500
ø80
M-38
ø65
M-37
4000
ø90
M-38
ø75
M-37
缝纫机的缝纫速度
(sti/min)
MF-7200D
50Hz
60Hz
马达皮带轮尺寸
皮带尺寸
马达皮带轮尺寸
皮带尺寸
3500
ø80
M-38
ø65
M-37
4000
ø90
M-38
ø75
M-37
马达皮带轮和皮带
※ 此表是使用 3 相 2 极 400 瓦（1/2HP) 的离合马达时的数值。
※ 市面销售的皮带轮外径为 5mm 单位，因此请指定接近计算值的市面销售的皮带轮。
请使用适合本产品的马达皮带轮。如果没有使用适合的皮带轮的话，超过缝纫机的最高转速，缝纫机就会发
生故障。
– 9 –
Motor pulley /
马达皮带轮
40˚
5.5 mm
10 mm
M type V belt /
M 型 V 形皮带
Use a clutch motor of 3-phase, 2-pole, 400 W (1/2HP).
Use the M type V belt.
1) The motor pulley shifts to the left-hand side when
depressing the pedal. At this time, install the motor so
that the centers of motor pulley and lower pulley align
with each other.
* For the installing procedure of the motor pulley, refer
to the Instruction Manual for motor.
lower pulley /
下皮带轮
2) Install the motor so that the pulley rotates clockwise.
3. Installing the motor /
马达的安装
15 - 20mm
1) Fit belt
1
to lower pulley
2
.
2) Turning upper pulley
3
, set the other side of the belt
to motor pulley
4
.
3) Adjust the belt tension so that the belt sags 15 to 20
mm when the center of the belt is pressed with an
approximate 10N (1.02 kgf) load.
4) Securely fix the belt with lock nut
5
when the belt has
been set.
If the deflection of the belt is excessive
when the sewing machine is operated,
check again the belt tension.
4. setting the belt /
皮带的挂法
WarNING :
When replacing the belt, be sure to turn oFF the power to the motor and ascertain that the motor has
totally stopped rotating before starting the work. there is a danger of injury since hands or clothes may
be caught in the belt.
注意 :
更换皮带时，请一定关掉马达的电源，确认马达停止转动之后再进行更换作业。否则，有发生手、衣服卷进缝纫机，
发生负伤的事故的危险。
请使用 3 相 2 极 400 瓦（1/2HP）的离合马达，并使用
M 型 V 形皮带。
1） 踩了踏板之后，马达皮带轮向左靠紧。此状态时，请
调整马达让马达皮带轮和下皮带轮的中心对齐。
※ 马达皮带轮的安装方法，请参照马达使用说明书。
2） 安装马达时，请让缝纫机皮带轮向顺时针方向转动。
1） 请把皮带
1
挂到下皮带轮
2
上。
2） 一边转动上皮带轮
3
，一边把皮带的一头挂到马达皮带轮
4
上。
3） 用约 10N（1.02kgf）的力量按压皮带的中央部后，松弛量应为 15 〜 20mm，请按此标准进行调整。
4） 调整好皮带张力之后，请把固定螺母
5
确实地拧紧固定。
缝纫机皮带轮反转的话，就不能正常加油，造
成缝纫机故障。
If the machine pulley rotates in the reverse
direction, nomal lubrication cannot be
performed. as a result, machine trouble will
be caused.
运转缝纫机皮带摆动过大时，请重新调整皮带张力。
1
3
4
5
2
