JUKI MF-7500 Series Specifications page 3

JUKI's dry-head technology
protects sewing products from being stained with oil.
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.
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.
Dry-head technology has materialized
a frame which does not need oiling.
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.
Environmental consciousness
Since oil stains on sewing products are reduced, the quantity
of the use of stain remover generally used in sewing plants
can be reduced.
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.
Simplified maintenance mechanism
The looper thread twining prevention mechanism
has been improved and is provided as standard
for the sewing machine.
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.
Commercially-available gauge components
are applicable with no additional work.
As a result of the commonality of components, commercially-available
components (presser foot, throat plate and needle clamp) are now
applicable and easily obtainable.
The
world's
first
The semi-dry
head sewing machine
increases its sewing
5,000
A semi-dry
head type sewing
machine has been
added.
Needle bar stroke conversion mechanism
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)
All of the sewing machines with
a thread trimmer are provided
with a direct-drive motor.
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.)
Servomotor
MF-7723/UT31/SC510
Direct-drive motor
MF-7523/UT37/SC921B/CP18B
speed to
sti/min
Power
consumption
Reduced by
29%