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2) Pat No. of frame support plate bolt
1
Semi-sunken type
Support plate bolt (A) 13155007 x 4
Locknut NS6240630SE x 4
Washer WP1002036SE x 4
Spring washer WS1002560KR x 4
2
Fully-sunken type
Support plate bolt (C) 13155106 x 2
Support plate bolt (D) 13155205 x 2
Locknut NS6240630SE x 12
Washer WP1002036SE x 12
Spring washer WS1002560KR x 4
Difference of support plate bolts (A), (C) and (D)
Entire length under the neck and length of threaded part
Entire length Length of threaded part
(mm) (mm)
Support plate bolt (A) 69 39
Support plate bolt (C) 137 107
Support plate bolt (D) 149 119
(5) Kinds of motor pulleys, belts and frame support plate bolts
1) Motor pulleys and belts
50Hz 60Hz
V-belt V-belt
Semi-sunken type Fully-sunken type Semi-sunken type Fully-sunken type
mm (inch) mm (inch) mm (inch) mm (inch)
6000 110 (105) 914 (36) 813 (32) 95 (90) 889 (35) 762 (30)
5500 100 (95) 914 (36) 813 (32) 85 (80) 889 (35) 762 (30)
5000 90 (85) 889 (35) 762 (30) 80 (75) 864 (34) 762 (30)
4500 85 (80) 889 (35) 762 (30) 70 (65) 864 (34) 762 (30)
4000 75 (70) 864 (34) 762 (30) 60 (55) 864 (34) 737 (29)
Sewing
speed of
sewing
machine
(rpm)
* A motor with 1/2 horsepower (400 W) or more shall be used.
(Caution) If a motor of less than 400W is used, in the low temperature area, viscosity of oil increases
and the sewing speed may not increase or the sewing machine may fail to run in some cases.
* Part No. of motor pulley
MTKP0xxx000 (Enter the effective diameter to “xxx.”)
If the outside diameter of the motor pulley is 90 mm, the effective pulley will be 085.
.....So, the part No. will be MTKP0085000.
* Part No. of belt
MTJVM00xx00 (Enter a number that shows the belt length to “xx”)
If the belt length is 889 mm (35 inches), enter “35” to “xx.”
.....So, the part No. will be MTJVM003500.
Outside diameter
of motor pulley mm
(effective diameter
mm)
Outside diameter
of motor pulley mm
(effective diameter
mm)
Support plate bolt (A) Support plate bolt (C) Support plate bolt (D)
69mm
39mm
137mm
107mm
149mm
119mm
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