Juki DLM-522 Instruction Manual

BE5220SOBOA

MODEL

HIGH SPEED, SINGLE

INDUSTRIAL

WITH

DLM-522

NEEDLE,

SEWING

MECHANICALLY

MACHINE

BUILT-IN

Instruction

aJUICI

LOCKSTITCH

TRIMMER

Book

TOKYO

JUKI

INDUSTRIAL

OLMS22

CO..ITO.

Thank you very much for purchasing JUKI'S MODEL DLM-522, high speed, single

needle industrial sewing machine

This is a sewing machine with built-in trimmer and can attain a sewing speed of up

to

4,500

s.p.m.
As the main
the sewing efficiency is greatly

This is a machine with wide areaofusage and best suited for sewing light heavy weight

materials.

functionofthis machine is to

equipped

upped

with

trim

to increase

mechanically built-in trimmer.

the

garment

the

during the sewing

production.

operation,

Before using this machine, please read and digest the INSTRUCTION BOOK thoroughly

to produce best results and to prolong the life of the machine.

DLIVI-522

Sewing

Stitch

Stitch

speed

length

adjuster

SPECIFICATIONS

4,500

s.p.m.

0-4

mm(5/32"|

Dial

system

Reverse sewing • • • - Reverse lever system

Needles DBxl

Lubricating

oil New

Trimming width • • • • Standard

(16x231,1738)

Defrix

Other

(By special

Oil No. 1

3.2

mm(1/8"l,

4.8

mm(3/16")

order)

#11, #14,

6.4

mm(1/4")

iS'lS.

#18

DLM-522

CONTENTS

Page

Installing the oUreservoir • • • 2

Motor pulley and the belt 2
Cautions on operating the machine 3

Lubrication

1. Adjusting the oil supply to the face

part

2. The oil adjusting pin 4

3. Adjusting the oOsupply to the hook components 4

Threading the machine 5

Preparationof the bobbin thread 6

Inserting&
Winding

Howtoinsert

The

thread

Adjusting the needle

removing

the bobbin case 6

the bobbin thread 6

the

bobbin

tension

thread

tension 7

Thread take-up spring 7

Adjusting the bobbin thread tension 7

Presser foot and feed dog 8

Adjusting
The

the

pressure

presser

foot handlifter 8

of the

presser

foot 8

Heightof the feed dog 8

The stitch length 9

Adjusting

the stitchlength 9

Reversesewing 9

Pushingpressure of the feed lever 9

The

knife

Howto operate the knife 10

Howtoinstall

Changing

the

knife

the trimmingwidth 10

Inserting the needle 11

Installing and

Relation

removing

between

the

the

hook

sewing

hook 11

and

the

needle

Adjustingthe height of the presserbar 13

Adjustingthe amount of the thread take-up 13

Tableofgauges 14

3

3

g

6

10

10

12

(Note)

Due to improvements on the machine, some parts of the operational procedures of this

INSTRUCTION BOOK might be changed without notice.

-1

—

INSTALLING

Rubber

THE

cushion

OIL

m

RESERVOIR

As

such a way so that the 4 comersofthe groov
ed part

reservoir.

1. Nail in

2.

shown

the

Place

of

the

in

the

figure,

set

the

of

the table will be supporting the

the2rubber

protruding

the oil

table.

partofthe

reservoir

cushionsinfront

table.

on the protruding part

reservoir in

to

Opeiatoi

MOTOR

Motor

Hertz

pulley

50

60

side

PULLEY

Hinge side

AND

THE

No.ofrotation

of

machine

4,650

s.p.m.

4,000

s.p.m.

4,540

s.p.m.

4,040

s.p.m.

BELT

Model

DLM-522

can sew at a high speed of

up to 4,500 s.p.ni. When connected directly

to the power source, use a 3-phase 400 W

(1/2HP)

Use a M

the

number

clutch

type

of

motor.

V-belt.

rotation

The

relation between

of

the

the dimensionofthe motor pulley is shown in

the table. (Effective diameter)

* The effective diameter of the motor pulley

means

the

of

the

motor

MTK-PVl

MTK-PO

MTK-PV090000

MTK-PV

diameterasmeasured

the

V-belt

machine.

Part

No.

of

pulley

10000

095000

080000

when

the

beltiswound

Effective

of

110

95

90

80

motor

mm(4-l
mm(3-3/4")
mm(3-35/64")
mm(3-5/32")

machine

from

the

diameter

pulley

1/32")

with

center

around

2 -

CAUTIONS

1 Do

not

with

ON

OPERATING

THE

MACHINE

run the machine, under any circumstances, before the oil reservoir is filled up

fresh

oil.

2 Always

verse

rotate

direction.

the machine toward the operator. Do

3 This machine can run with a speedofup to

the speed to

about

4,000

s.p.m.

LUBRICATION

HIGH

Oil

mark

sieht

PLH-saa

LOW

mark

window

Oil

reservoir

not

run the machine in the re

4,500

s.p.m.

but

Before

operating

1. Fill up

Defrix Oil No. 1 uptothe

2.

Watch

go

below

the

and

the

oil reservoir

see

that

"LOW"

for the first

the

machine

with

mark

the

oil

mark.

month

JUKI

"HIGH".

level

does

drop

New

not

* Attach an oil-proof plate (J) to the oil-

reservoir,asshowninthe

operate.

3.

Under

normal

chineisrun

oil will

spurt

conditions,

afteritis filled up

against

illustration

when

the

oil sight window.

with

the

oil,

and

ma

the

(Caution)

1) When

the

oil gets

dirty,

change it

with

new,

fresh oil. If the oil plug of the reservoir is

removed,

2)

When

time or
of
s.p.m.
machinetoget

oil will

the

machineistoberun

when

time,

run

for

about10minutes

come

out.

it was idle for a

the

machineat3,000-3,500

well-oiled.

for

great

and

the

allow

first

length

the

iV'

\'

Gj

1

Lubrication

Apply

marked

- 3 -

of

oneortwo

places

twiceaday.

the

knife

dropsofoil to

the

arrow

Oil adjusting

pin

Oil

amount

gets

less

n

z

Oil

amount

I II I I

Needle

bar

Grooveofeccentric

Oil

adjusting

/

T

N^^Arm

shaft

Oil adjusting pin screw

Counterweight

Crank

crank

pin

h

gets

11

more

1. Adjusting the oil supplytothe face

part

When adjusting the oil supply to the thread

take-up and needle bar crank components,
remove the face plate and the oil prevent

ing plate and adjust by turning the oil adjusting

pin at the tipofthe main shaft.

1. When

2. When

(Caution)

The oil amount does

after

thisinmind.

2.

1.

2. When the groove is at the opposite side of

3.

the

comes

less.

sideofthe

the

The

The

markofthe

near

the

mark

crank,

adjustment,sowhen

oil

adjusting

oil adjusting

as shown in

and

the

oil

together,

the

The

side

the

oil hole, the oil

red

markonthe

without

the

crank,

the

oil

comestothe

the

oil

amount

not

change immediately

adjusting, have

pin

pin

has a carved groove

the

figure. When this groove

adjusting pin

holeofthe

oil

amount

the

carved

amount

oil

adjuster

groove.

main

gets

gets less.

amount

opposite

gets

shaft

more.

shows

gets

more.

come

the

Oil regulating valve

3.

Adjusting

components

The supplyofoil to
can be adjusted by

the

hook

shaft.

the

oil

supplytothe

the

hook

the

oil regulating valve on

1. If this valve is turned toward©side (right),

the

oil

amount

gets

more.

2. If this

- 4 -

amount

valve

is turned to 0 side (left), the

gets less.

hook

components

THREADING

Rotate

the

1. Pass the needle thread in

2. Pass the

3. Pull

out

THE

hand

wheel to

thread

to the needle eye

about10cm(4")ofthe

riiri

MACHINE

light

and

place the thread take-uptothe highest position.

the

order

thread

shown by the figure.

fiom

lefttoright

from

the

needle

eye.

JUKI

- 5 -

PREPARATION

OF

THE

BOBBIN

THREAD

Bobbin

Trip

case

latch

Adjustinft

Sewing

\

screw

hook

Tension

base

Inserting & removing

1.

Rotate

the

hand

wheel

the

bobbin case

with

bringthe needleto its highestposition.

2. Tilt the machine and support it by the head

support

on the table.

3. Lift up the knob of the bobbin case and

takeitout.

* If you hold the knob in open condition,

bobbin

will

not

fall

off.

4. To insert the

into

the

of

the

of

the

hook

Winding

1.

2.

Set

screws.

Pass

the

the

the

shaftofthe

bobbin

and

bobbin

bobbin

threadinthe

bobbin

case, insert it deep

hooksothat

case fully

then

close

thread

windertothe

order

figure and wind it around the bobbin several

times.

3. Knock

4. Adjust the winding amount by the winding

disc

down

pulleytothe

the

belt.

trip latch

adjustingscrewso that about 80% is wound.

5.

When

the

the

right and

6. When

latch

stop

threadiswound

thread

tension

conect

to even winding condition.

the

winding is completed,

will be released

automatically.

disc

and

your

hand

the

enters

the

the

knob.

table

showninthe

and

contact

unevenly,

basetoleft

the

pulley will

nose

groove

move

the

and

with

the

and

trip

Thread

hole

.Thread

passing hole

Howtoinsert

1.

Hold

the

the

bobbin

bobbin

and

insertitto

case so that the thread will be in right-twist

condition.

2. Pass the thread to the thread passing hole

of

the

bobbin

case.

3. Then pull the thread and it will pass under
the thread tension spring and can be pulled

out

through the thread

- 6

mouth.

the

bobbin

THE

THREAD

TENSION

Moving

range

Thread

Weaker

Thread

tension

'^Thread

take-up

bar

tension nut

sp^

Tendon

set

screw

Stronger

bracket

.jj

Adjusting

Ideal

thread and the bobbin thread are

interlockedatthe

the

stitches

needle

are

thread

formed

centerofthe

when

tension

the

cloth.

needle

perfectly

The tension of the needle thread is adjusted

by the thread tension nut.

1. Turn it to right to make

andtothe

Thread

* To

tension

1.

Loosen

bracket

2.

Rotate

lefttomakeitweaker.

take-up

change

the

spring:

the

screwofthe

the

thread

spring

moving

tension

the

tension stronger

range

of the

thread

bar.

thread

tension

* To change the strength of the thread take-

up

spring

1. Loosen

2.

3.

the

set

tension

Loosen

screw, remove the thread

bar

the

thread

tension

and adjust.

When

the

thread

tension

baristurned

right,

the spring will get stronger and if

turned

to left, it will

get

weaker.

Thread

bar

bar

set

tension

set

screw

screw

to

Adjusting

screw

- 7 -

Adjusting

Rotate

the

case to

adjust

1.

Rotateitto
tension stronger

weaker.

Thread take-up spring

the

bobbin

thread

tension

the

bobbin

right to

andtolefttomake

thread

screwofthe

thread

make

tension

the

tension.

bobbin

bobbin

thread

it

PRESSER

FOOT

AND

FEED

DOG

Pressure adjusting

screw

Hand

Adjusting

foot

1.

Turn
to

to

Normal pressure for general fabric is

5

The

presser

Turn

the

the

pressure adjusting screwtoright

make

the pressure stronger

makeitweaker.

kg(ll

lbs.).

foot

the

hand

lifting lever located in the rear

pressure

hand

lifter

off

the

presser

andtoleft

about

the machine head either to left or right, and

the presser foot will go up for

about

4.5 mm

(3/16") from the throat plate surface.

Push down hand lifter, and the presser foot will

come down to press the work. By the knee

lifter, the presser foot will go up for about
10 mm (25/64") from the throat plate surface.

of

Feed

driving fork

Clamp

TA

screw

Height of the feed dog

The height of the feed dog from the surface

of

the throat plate is set from 0.7—0.8 mm. In

sewing

light weight materials, if this height is

too high, shrink-stitching may result.

To adjust the height of the feed dog:

1. Loosen the clamping screwofthe feed

driving fork of the compound feed.

2. Move the feed dog base up and down and

adjust.

3. After adjusting, tightly tighten the clamping

- 8 -

screw.

I

Feed

dog

0.7~0.8inin

Throat plate

THE

STITCH

Feed adjusting dial

LENGTH

Lever

Adjustingthe stitch length

The stitch length can be

the feed adjusting dial above the feed lever.

The figures on the graduator are shown in

nun.

1. Rotate the

or

left

feed

2. And match the

which is coming

• The maximum stitch length is4 mm(5/32").

Reverse sewing

1. For

reverse

sewing,

down.

2. As long as this lever is kept down, reverse

sewing can be performed.

3. Release this lever and the feed lever will re

turn to originalposition and normal straight

stitching can be resumed.

adjustedbyturning

adjusting

desired

out

dialeithertoright

figure

from the arm.

push the feed lever

with the pin

Adjustine nut

Pushing pressure of

Irrespective

of

the

the

length

feed lever

of

pull-up spring is somewhat strengthened so
that

during

Ugh

speed sewingifthe

released

returntothe

When

the

shorter

rotation

from

the feed lever,itwill positively

original

position.

stitches

of

are

the

desired

machineistobeslowed

down, it is possible to decrease the pushing

pressureof^e

1. When

the

feed

adjusting

lever.

nut

is loosened,

pushing pressure will become weaker and

if

the

nut

- 9 -

will

become

is tightened,

stronger.

the

pushing

stitches,

hand

or

pressure

the

is

when

the

THE

KNIFE

n

r""

1 A

part

0^0.5

mm

Howtooperate

To operate the knife,

setting

plate0.The

goes

into

startofthe

When it is desired to stop the actionofthe

knife and switch to normal lockstitching, pull
the knob (2) toward the arrow direction. The

knife will go up.

Be

suretostop

remove

the

HowtoInstall

Install

the

upper knife is at the lowest point, the A

the upper knife is lowered by O-O.S mm from

the upper surfaceofthe gauge. Adjust to this
position by raising or lowering the upper knife.

(Refer to accompanying figure)

the

knife

pu^

knife

will

actionatthe

machine.

the

knife.

the

knifeinsuchaway

same

machinetoassemble

knife

down

come

time

that

the

down

with

when

part

knife

and

the

the

or

of

(D

Changing

The

exchanging the gauge, loosen the knife guide

the

trimming

trimming width is setbythe gauge. When

width

diaft set screw (I) so that the knife will be

parallel

sharp

To change the positionofthe
change

screw (2)

lower knife to

and

also be sure Uiat

and

keen.

of

dimensionofthe

and

by making die bladeofthe

contact

knife due to the

gauge, loosen the

the

bladeofthe

knife, set the screwd). By standard specifica

tions, gauge setof3.2

on

the

machine.

When gauge width is to be exchanged, refer

-

to page 14
guidance.

10

-

under

mm(l/8")

''TableofGauges"

the

knife is

is installed

for

upper

your

INSERTING

Set

screw

THE

Needle

NEEDLE

Groove

Use DB X 1 needles. There are many numbers

and

sizesofthe

needle,

but

select

the

conect

size and number depending on the thickness

of the thread or kinds of sewing material.

1. Rotate the hand wheel and bring the needle

bartothe

highest position.

2. Loosen the needle clamp screw.
that

3. Hold the needle so

the

needle

comestoyour

4. Insert the needle deep

the long groove of

left

into

side.

the needle hole.

5. Then securely tighten the needle clamping

screw.

INSTALLING

r

Feed

base

Hook

AND

Bobbin

finger

REMOVING

case

positioning

screw

THE

SEWING

HOOK

During the running of the machine,ifthread

hards get into the hook or the position of the

hook

changes for some reason or to exchange

the

hook

with

a new one, do as follows in

order:

1.

Rotate

the hand wheel and bring the needle

bartothe

2.

Remove

highest position.

the

bobbin

case

and

the

3. Remove the bobbin case base positioning

finger set screw

and

take

out

the

case positioning finger.

4. Loosen the 3 screws of the sewing hook. •

5. Rotate the hand wheel and raise up the
feed base to its highest position.

6.

Rotate

the sewing

and

placeitin

the

figure.

7. Pull

the

hooktoyour

* To install the

cedure.

hook

the

hook

with

position as shown in

left

and

back, reverse this pro

your

takeitout

needle

bobbin

hand

-

11

-

RELATION

BETWEEN

THE

HOOK

AND

THE

NEEDLE

Clamp

screw

® DETERMINE

OF

THE

(D

DETERMINE

OF

THE

Needle

— _ ^with the

THE

NEEDLE

Upper indicating line

'Lower

Needle

THE

POSITION

SEWING

VA

Lower

(At

this

the blade point of the

Q sewing hook

HEIGHT

BAR

Needle

bar

lower

bushing

indicating

bar

HOOK

indicating

position, match

center

Blade point of the needle

the

sewing

hook

Sewing

hook

Match the needle with the sewing

follows:

1. Rotate the hand wheel and bring the needle

bar to its lowest position.

2. Loosen the needle bar clamping set screw.

(Determine

3. Match
bar

with

the

the

upper

the

height of

carved lineofthe

lower

edgeofthe

lower bushing.

4.

Ti^ten

the

needle

bar

clamping

line

(Determine

the

positionofthe

hook)

5. Loosen

line

6. Place

so

the

that

hand.

the

3 clamping screwsofthe

the

hook

canberotated

the

hook

with

yoxu

passing position.

7.

Rotate

the

hand

wheel

and

carved

lineofthe

needle

edgeofthe needle bar lower bushing.

8. In

this

condition,

match

the hook with the center lineofthe

9.

Make

the

clearance

and

the

hook

10. Securely tighten

screw.

between

blade

pointtoO.OSmmand.

the

hook

the

needle bar)

needle

set

freely

handtothe

match

the

bar

with

the

the

blade

the

clamping set

hook

needle

screw.

sewing

hook

thread

lower

lower

point

n^dle

needle

as

bar

with

of

-12-

ADJUSTING

THE

Presser

HEIGHT

bar

clamp

screw

OF

THE

When

presser
exchange

1. Remove

2.

3. After

PRESSER

the

bar

From
presser

the

set

screw.

BAR

height

oi

the

is to be changed due to the

of

presser

foot:

the

rubber

plugofthe face plate.

this hole, adjust by loosening

bar

clamping screw.

adjustment, securely tighten

direction

of

the

the

the

ADJUSTING

Thread

THE

guide

AMOUNT

OF

THREAD

The

TAKE-UP

amount

of

the

thread

take-up should

be changed according to the length of stitches

or thicknessofthe sewing cloth to produce

ideal

thread

tension.

1. When sewing heavy weight materials, move

the thread guide to your left.

The thread take-up amount of the take-up

gets

more.

2. When sewing light weight materials, move

the thread guide to your

The

thread

take-up

amount

ri^t.

gets less.

-

13

-

With

Use

the

changeofposition of knife, gauges were also changed as

this

Table

for

the

new

machine

with

center

knife.

per

"TABLE

OF GAUGES" below.

Parts

Gauge

Throat

plate

Throat

plate

Waste material

Presser

foot

Feed

dog

open

asm.

guard

width

cover

2.4mm(3/32")

B-1190-522-X00

B-1109-052-000

B-1115-522-N00A

B-1191-522-N0A

B-1191-522-N0B

B-1524-522-NA0A

B-1613-522-N00

TABLE

3.2mm(1/8")

B-1190-522-800

B-1109-052-000

B-1115-522-N00A

B-1191-522-N0A

B-1191-5

B-1524-522-NA0A

B-1613-522-N00

22-NOB

OF

GAUGES

4.8mm(3/16")

B-1190-522-T00

B-1109-522-W00

B-1115-522-W00B

B-1191-522-N0A

B-1524-522-NA0A

B-1613-522-N00

6.4mm(1/4")

B-1190-522-T00

B-1109-522-W00

B-1115-522-W00B

B-1191-522-W00

B-1524-012-0A0 B-1524-012-0A0

B-1613-522-W00

9.5mm(3/8")

B-1190-522-V00

B-1109-5

B-1115-522-W00B

B-1191-522-W00

B-1613-522-W00

22-WOO

TOKYO

Head

Office

Business

Cable: JUKI TOKYO Telex:

JOKi

&Plant:2-1.8-chome,

Office:

23-3,

Kabuki-cho

INDUSTRIAL

1-chome.

22967;

Kokuryo-cho,

232-2301

Chofu-shi.

Shinjuku-ku, Tokyo 160. Japa

CO..

Tokyo,Japan

LTD