JUKI DDL 552 Manuale utente

MODEL

DDL-552

-553

-555

HIGH

SPEED

SINGLE

NEEDLE,

LOCK

STITCH

INDUSTRIAL

SEWING

MACHINE

Instruction

Book

TOKYO

JUKI

INDUSTRIAL

CO.ITD

From the library of: Superior Sewing Machine & Supply LLC

thank

you

for purchasing JUKI Model DDL-552-553-555, high speed, single needle,

lockstitch

industrial

sewing machines.

DDL-SS2 is best suited for sewing general fabric; DDL-S53 is designed and constructed

for sewing heavy weight materials and DDL-555 is equipped with reverse feed mechanism

for a wide area of usage such as sewing men's shirts, blouses

and

other

general garments.

The thread take-up, sewing

hook,

feed mechanism, etc. are all specially designed

and

constructed for high speed sewing. Therefore, at high speed sewing, the running sound is

nominal

and

the

stitching

condition

is superb.

Before operating these machines, please read this INSTRUCTION BOOK carefully

and thoroughly digest the functions of these efficient machines and enjoy everlasting

pleasure

using these machines.

SPECIFICATIONS

DDL-552

DDL-553

DDL-555

Sewing

type

Single needle

lock

stitch

Usage

General

fabric

Medium

heavy

weight

material

Medium

heavy

and

heavy

weight

material

General

fabric

Medium heavy weight

material

Sewing

speed

Up to

5,500

s.p.m.

Normal speed:

5,000

s.p.m.

Up to

4,300

s.p.m. Up to

5,500

s.p.m.

Normal

speed:

5,000

s.p.m.

Thread

take-up

Link-type

thread

take-up

Sewing

hook

Automatic

lubricating

rotary

hook

Dia.

hook

shaft

7.94

<l>

Needles

DBxl

#11-18

DBx257

#14-22

DBxl

#11-18

Feed

amount

Max. 6 s.p.i. Max. 5.5 s.p.i.

0-4

mm(5/32")

Stitch

adjuster

Push-button

system

Dial

system

Reverse

sewing

None

Lever

system

Lubrication

Completely

automatic

lubrication

(Rotating

volute

pump)

Lubricating

oil

New

Defrix

Oil

No.

Table

type

From the library of: Superior Sewing Machine & Supply LLC

TABLE

CONTENTS

(DDL-552-553-555)

Page

Installingthe oil reservoir 2

MotorpuUey and the belt 2

Cautions on operating the machine 3

Lubrication 3

Adjusting

theoil

supply

to the

face

part 4

2. The

adjusting pin 4

Adjusting

theoil

supply

to thehook

components

Threading the machine 5

Preparation

the bobbin thread 6

Inserting & removing the bobbin case 6

Windingthe bobbin thread 6

How to insert the bobbin 6

The thread tension 7

Adjusting the needle thread tension 7

Thread take-up spring 7

Adjusting the bobbin thread tension 7

Presserfoot and feed dog 8

Adjusting the pressure

the presser foot 8

The

presser

foot

hand

lifter

Height of the feed dog 8

The stitch length 9

Adjusting

the stitch

length

(DDL-552-553)

Adjusting

the stitch length

(DDL-555)

Reverse

sewing

(DDL-555)

Inserting

the

needle

Installing

and

removing

the

sewing

hook

Relation

between

thehookandtlie

needle

Adjusting

the

height

of the

presser

bar

Adjusting

the

amount

ofthe

thread

take-up.

Adjusting

the

pressing

pressure

of the

feed

lever

(DDL-555)

(Note)

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

of this INSTRUCTION BOOK might be changed without notice.

- 1 -

From the library of: Superior Sewing Machine & Supply LLC

INSTALLING

THE

OIL

RESERVOIR

Rubber

cushion

Oil

reservoir

Operator

side

Hinge side

As shown in the flgure, set the reservoir in

such a way so that the 4 comers

the grooV'

ed part of the table will be supporting the

reservoir.

Nail

the

rubber

cushions

front

the protruding

part

the table.

2. Place the oil reservoir on the protruding

part

the

table.

MOTOR

PULLEY

AND

THE

BELT

V-belt

Motor

pulley

Model DDL-552 can sew at a high speed of

up to 5,500 s.p.m., DDL-553 at a high speed

of up to 4,300

s.p.m.

and

DDL-555

at a speed

of up to 5,500 s.p.m. For all of above models,

use a 3-phase

400

W(l/2

HP)

clutch

motor

when connected directly to the power source.

Use a M

type

V-belt.

The

relation

between

the

number

rotation

the

machine

with

the dimension of the

motor

pulley is shown in

the

table. (Effective diameter)

* The effective diameter of the motor pulley

means

the

diameter

measured

from

the

center

the

V-belt

when

the

belt

wound

around

the

machine.

Model

Cycle

No.

rotation

machine

Part

No.

motor

pulley

Effective

diameter

motor

pulley

DDL-552

DDL-555

5.060

s.p.m.

4,630

s.p.m.

MTK-PVl

20000

MTK-POllOOOO

120mm(4-47/64")

110mm(4-5/16")

5,040 s.p.m.

4,540

s.p.m.

MTK-PVl

00000

MTK-PV090000

100mm(3-15/16")

90mm(3-3/4")

DDL-553

4,250

s.p.m.

3,850

s.p.m.

MTK-PVl

00000

MTK-PV090000

100mm(3-15/16")

90mm(3-35/64")

4,320

s.p.m.

3,790

s.p.m.

MTK-P0085000

MTK-P0075000

85mm(3-ll/32")

75mm(2-61/64")

- 2 -

From the library of: Superior Sewing Machine & Supply LLC

CAUTIONS

OPERATING

THE

MACHINE

not run the

machine,

under

any

circumstances,

before

theoil

reservoir

filled

with

fresh

oil.

2. Always rotate the machine toward the operator. Do not run the machine in the re

verse

direction.

Although

the

machines

can

attain

maximum

speed,

for

the

first

month

drop

the

speed

normal

speed

and

for

DDL-552

operate

at a

normal

speed

4,500

s.p.m.,

for

DDL-553

3,800

s.p.m.

and

for

DDL-555

4,500

s.p.m.

After

that,

run

the

machines

at an

appropriate

speed

depending

on the

nature

work

and

the

capability

the

operator.

LUBRICATION

HIGH

mark

Oil

reservoir

LOW

mark

Before

operating

the

machine

1. Fill up the oil reservoir with JUKI New

Defrix Oil No. 1 up to the mark "HIGH".

Watch

and

see

that

the

oil level

does

not

below

the

"LOW"

mark.

Oil sight window

Under

normal

conditions,

when

the

machine

run

after

it is filled up with oil,

the

oil will

spurt

against

the

oil sight window.

(Caution)

1) When the oil gets dirty, change it with new,

fresh oil.

the oil plug

the reservoir is

removed,

oil will

come

out.

When

the

machine

run

for

the

first

time or when it was idle for a great length

time,

run

the

machine

3,000-3,500

s.p.m.

for

about

minutes

and

allow

the

machine

get

well-oiled.

3) When

the

machine

run

constantly

at less than

3,500

s.p.m. adjust so

that

the

oil supply to various parts be increased.

IDOL-SSS

•mtrm ntTffI

- 3 -

From the library of: Superior Sewing Machine & Supply LLC

Oil

adjusting

Oil

amount

gets

less

Crank

II•

••

Oil

amount

gets

n I I II

Needle

bar

crank

Groove

eccentric

"Oil

adjusting

Arm

shaft

Oil

adjusting

screw

Counterweight

Oil regulating valve

1. Adjusting the oil supply to the face

part

When adjusting the oil supply to the thread

take-up and needle bar crank components,

remove

the

face

plate

and

the

oil preventing

plate and adjust by turning the oil adjusting

pin at the tip of the main

shaft

1. When

the

red

mark

the adjusting pin

comes

near

the

crank,

the

oil

amount

gets

less.

2. When

the

red

mark

comes to

the

opposite

side

the

crank,

the

oil

amount

gets

more.

(Caution)

The

oil

amount

does

not

change

Immediately

after

the

adjustment,

when

adjusting,

have

this

miiid.

The

oil

adjusting

The oil adjusting pin has a carved groove

as shown in the figure. When this groove

and

the

oil

hole

the

main

shaft

come

together, the oil amount gets more.

When

the

groove

is at the oppositesideof

the oil hole, the oil

amount

gets less.

The

red

mark

the

oil adjuster shows

the

side

without

the

carved groove.

3. Adjusting

the

oil supply

the

hook

components

The

supply

oil to

the

hook

components

can be adjusted by

the

oil regulating valve on

the

hook

shaft.

1. If this

valve

is turned toward0

side(right),

the

oil

amount

gets

more.

2. If this

valve

is turned

to0

side(left), the

amount

gets less.

- 4 -

From the library of: Superior Sewing Machine & Supply LLC

THREADING

THE

MACHINE

Rotate

the

hand

wheel

right

and

place

the

thread

take-up

the

highest

position.

Pass

the

needle

thread

in the

order

shown

by the

flgure.

Pass

the

thread

to the

needle

eye

from

left to

right.

Pull

out about 10

cni(4")

of the

thread

from

the

needle

eye.

(U)

- 5 ~

From the library of: Superior Sewing Machine & Supply LLC

PREPARATION

THE

BOBBIN

THREAD

Bobbin

case

Trip

latch

Hook

Tension

disc

base

Adjusting screw

— ^

Thread

hole

Hfii\

f(l!r

Thread

passinghole

Inserting &removing

the

bobbin

case

Rotate

the

hand

wheel

with

your

hand

and

bring the needle to its highest position.

Tilt

the machine and support it by tlie head

support

on the table.

3. Lift up the knob of the bobbin case and

take

out.

you

hold

the

knob

open

condition,

bobbin

will

not

fall

off.

insert

the

bobbin

case,

insert

deep

into

the

shaft

tlie

hook

that

the

nose

the

bobbin

case fully

enters

the

groove

the

hook

and

then

the

knob.

Winding

the

bobbin

thread

Set

the

bobbin

winder

the

table

with

screws.

Pass

the

thread

the

order

shown

the

figure and wind it around the bobbin

several

times.

3. Knock down the trip latch and contact the

pulley to the

belt

4. Adjust the winding amount by the winding

adjustingscrewso that about 80%iswound.

When

the

thread

wound

unevenly,

move

the

thread

tension

disc

base

left

and

correct

even winding

condition.

6. When the winding is completed, the trip

latch

will be released

and

the

pulley will

stop

automatically.

How

insert

the

bobbin

Hold

the

bobbin

and

insert

the

bobbin

case so

that

the

thread

will be in

ri^t-twist

condition.

2. Pass the

thread

the

thread passing hole

the

bobbin

case.

Then

pull the

thread

and

will pass under

the

thread

tension spring and

can

be pulled

out

through

the

thread

hole.

- 6 -

From the library of: Superior Sewing Machine & Supply LLC

THE

THREAD

TENSION

Weaker

Stronger

Adjusting

the

needle

thread

tension

Ideal

stitches

are

formed

when

the

needle

thread and the bobbin thread are perfectly

interlocked

the

center

the

cloth.

The tension of the needle thread is adjusted

the

thread

tension

nut.

1. Turn it to right to make the tensionstronger

and

the

left

make

weaker.

Thread take-up spring

* To change the moving range of the thread

tension spring:

Loosen

the

screw

the

thread

tension

bracket.

Rotate

the

thread

tension

bar.

» To change the strength

the thread take-

up spring.

1. Loosen the set screw, remove the thread

tension

bar.

Loosen

the

thread

tension

bar

set

screw

and

adjust.

When

the

thread

tension

bar

turned

right, the spring will get stronger and if

turned

left,

it will

get

weaker.

Thread

tension

bar

set

screw

'-'Thread

tension

nut

Ehread

take-up

springy

Movingrange

(Tl^ad

tension

bar

bracket

set

screw , / /

Adjusting screw

Thread

take-up spring

Adjusting

the

bobbin

thread

tension

Rotate

the

thread

tension screw

the

bobbin

case

adjust

the

bobbin

thread

tension.

1. Rotate it to right to make the bobbin

thread tension stronger and to left to make

weaker.

_ 7 -

From the library of: Superior Sewing Machine & Supply LLC

PRESSER

FOOT

AND

FEED

DOG

Pressure

adjusting

screw

Nut

—

Hand

hfter

Hill

JUKI

N!|^

Feed driving fork

~T7=

Clamp

screw*"

Adjusting

the

pressure

the

presser

foot

Turn

the

pressure adjusting screw

right

make

the

pressure

stronger.

Turn

this

screw to

left

to make

the

pressure

weaker.

Normal pressure

for

general fabric is

about

5 kg (11 lbs).

After

adjustment,

firmly tighten the

nut.

The

presser

foot

hand

lifter

To stop the presser

foot

the

lifted position:

Rotate

the

hand

lifter

the

rear

the

face

part

either

right or left.

2. The presser foot will go up

about

5 mm

(13/64")

and

stops.

3. To

lower

the

presser

foot,

activate

the

knee

lifter

once

and

the

presser

foot

will

come

down

the

original position.

4. With

the

knee

lifter,

the

presser

foot

will

go up

about

10 mm

(25/64")

Height

the

feed

dog

The height of the feed dog from the surface

the

throat

plate

is set

from0.7-0.8mm(l/32").

In sewing light weight materials, if this height is

too

high, shrink-stitching

may

result.

adjust

the

height

the

feed dog:

Loosen

the

clamping screw

the

feed

driv

ing

fork

the

compound

feed.

2. Move the feed dog base up and down and

adjust

3. After adjusting, tightly tighten the clamping

screw.

0.7~0.8om

- 8 -

Feed

dog Throat plate

From the library of: Superior Sewing Machine & Supply LLC

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