JUKI MF-7523-U11-D64, MF-7524-U11-D60, MF-7524D-U11-D60, MF-7522D-C11-B40 Specifications

MF-7500 Series

High-speed, Flat-bed, Top & Bottom Coverstitch Machine

MF-7500D Series

Semi-dry-head, Flat-bed, Top & Bottom Coverstitch Machine

MF-7523D-U11-B56

The feed locus can be adjusted externally. The feed locus is now
adjustable in terms of the vertical direction and horizontal direction,
thereby improving responsiveness to sewing materials.

It is provided with many different sewing-related mechanisms which contribute to
improved seam quality, such as the new feed mechanism, and differential-feed
micro-adjustment mechanism. In addition, the machine is provided as standard with
a looper thread twining prevention mechanism for improved maintenance.

The MF-7500 Series is
a newly developed coverstitch machine
provided with lots of mechanisms
for improving the seam quality.

It is possible to finely adjust the differential feed amount to a best-suited
value for the material to be used. The differential feed ratio is constant
even if the stitch length is changed.

The longitudinal position of the
feed is adjustable. As a result,
uneven material feed and
puckering that are likely to occur
when sewing products made of
elastic materials such as
foundations are reduced. This
means that the machine promises
improved responsiveness to
elastic materials.

Elastic material or delicate
material can be sewn with the
presser foot kept slightly raised.
This effectively helps reduce the
degree of slippage, warpage and
damage of the material.

Seam quality is improved!!

Main
feed dog

Differential
feed dog

Micro-lifter mechanismDifferential-feed micro-adjustment mechanism

The

world's

first

Thanks to the new feed mechanism,
many different types of sewing are achieved.

Feed longitudinal position adjustment mechanism

Horizontal

direction

Vertical

direction

Differential

feed dog

Main

feed dog

Contract

Expand

MF-7500

Series

High-speed, Flat-bed,
Top & Bottom Coverstitch Machine

MF-7500/UT

Series

Direct-drive, High-speed, Flat-bed,
Top & Bottom Coverstitch Machine with Needle- and Looper- Thread Trimmer

MF-7500D

Series

Semi-dry-head, Flat-bed,
Top & Bottom Coverstitch Machine

MF-7500D/UT

Series

Semi-dry-head, Direct-drive, Flat-bed,
Top & Bottom Coverstitch Machine with Needle- and Looper- Thread Trimmer

JUKI's dry-head technology
protects sewing products from being stained with oil.

In the case of looper thread
breakage, the looper thread
twining prevention mechanism is
activated to trim the looper thread
before the thread twines on the
looper thread cam. In this way, the
looper thread twining prevention
mechanism prevents the looper
thread from twining on the looper
thread cam. In addition, the looper thread cam, which has been
incorporated in the sewing machine, has been changed so that it is
mounted outside of the sewing machine. The externally-mounted looper
thread cam promises improved maintainability.

As a result of the commonality of components, commercially-available
components (presser foot, throat plate and needle clamp) are now
applicable and easily obtainable.

With the excellent functions inherited from the MF-7500 Series, the MF-7500D is provided
with a dry frame mechanism to eliminate the cause of oil stains. Stain removing work or
re-sewing work is substantially reduced by protecting sewing products from being
stained with oil, thereby improving the quality of finished products.

The frame no longer requires oiling.

Dry-head technology has materialized
a frame which does not need oiling.

Environmental consciousness

Dichlorofluoroethane (HCFC-141), which is generally used in
oil stain cleaning fluid, is included in those chemicals which
need to be reduced, as it is a substances that can harm the
ozone layer.

Since oil stains on sewing products are reduced, the quantity
of the use of stain remover generally used in sewing plants
can be reduced.

The needle bar mechanism and spreader mechanism have been applied with a
special surface treatment.
JUKI's unique special grease is used for lubrication. Grease-filled bearings have
been adopted for the crank rod. These allow the machine's frame mechanism to
demonstrate outstanding durability without being oiled.

Unlike the conventional models, the oiling mechanism inside the frame has been eliminated.
As a result, oil does not leak from the needle bar, presser bar or spreader shaft.

Simplified maintenance mechanism

All of the sewing machines with
a thread trimmer are provided
with a direct-drive motor.

By changing over the needle bar stroke, penetrating force of the
needle as well as thread tension to fit heavy-weight materials
(fleece, blankets) can be obtained. The needle bar stroke can be
changed by adjusting the eccentric pin. (Changing of parts is not
required. Factory-set at the time of delivery: 31mm; for sewing
heavy-weight materials: 33mm)

Needle bar stroke conversion mechanism

The direct-drive motor system has
been adopted by all of the sewing
machines with a thread trimmer. As a
result, the sewing machine starts up
swiftly and promises increased stop
accuracy, thereby demonstrating
improved responsiveness. In addition,
the machine is no longer provided with
a V-belt. This means that the adoption
of the direct-drive motor is also
effective in the elimination of belt shavings. Power is directly transmitted
from the motor to the sewing machine, thereby contributing to reduced
power consumption. (This sewing machine reduces power consumption
by 29% as compared with the conventional models.)

MF-7723/UT31/SC510

MF-7523/UT37/SC921B/CP18B

Servomotor

Direct-drive motor

The semi-dry

head sewing machine

increases its sewing

speed to

5,000

sti/min

head type sewing

machine has been

added.

A semi-dry

The

world's

first

Commercially-available gauge components
are applicable with no additional work.

The looper thread twining prevention mechanism
has been improved and is provided as standard
for the sewing machine.

29%

Power

consumption

Reduced by