Full Text Searchable PDF User Manual
Smooth sewing with direct drive system
Single needle direct drive straight lock
stitcher with thread trimmer
The direct-drive system optimizes the plain
lockstitching processes that require operator control.
The direct-drive mechanism provides superb levels
of reliability through the use of a unique built-in direct-
drive motor developed by Brother. The S-7200A
provides greater responsiveness to the operator's
intentions. Minute speed adjustments can be made
as required when sewing curves to make sewing
even smoother.
Brother was the first in the industry to release direct-drive plain
lockstitchers. The S-7200A is our leading DD lockstitcher which has been
developed from many years of research and success in the market.
Time required to reach maximum sewing speed
•
Good response and smooth sewing
performance
•
No staining of the product
•
Easy-to-understand and easy-to-use
operation panel
•
Comfortable operation with low noise
and low vibration
•
Easy to maintain
•
Economical to use with low power
consumption
S-7200A
AC servo motor
V belt
EC motor
V belt
Speed
S-7200A
0
1,000
2,000
3,000
4,000
(rpm)
0
0.1
0.2
Second
Clean sewing with no staining
Easy-to-understand and easy-to-use operation panel
Graphic display
Function key
Stitch counter
needle bar, thread take-up
rotary hook
oil tank
Sealed oil tank
Sewing speed
control display
A lubrication-free rotary hook is used, and no oil is used around
the needle bar, thread take-up or rotary hook mechanism.
This model utilizes Brother's advanced lubrication-free
technology. Sewing operations are freed from the problem of
staining the workpiece. The following three sub-classes are
available.
•
Semi dry type (
43
)
Max. sewing speed 5,000rpm
A sealed oil tank is used. The oil is kept clean at all times, and
only the rotary hook is lubricated. A lubrication-free hook is
optionally fitted to the use strictlly up to 4,000 rpm
•
Minimum lubrication type (
40
)
Max. sewing speed 5,000rpm
A sealed oil tank is used. The oil is kept clean at all times, and
it is supplied at the minimum quantity required to enable high-
speed sewing to be carried out.
•
Easy access to the required functions
The most commonly-used functions are
located at the front of the L-shaped panel. A
symmetrical layout has been adopted as the
user interface to make the function locations
easy to remember. Plus, they are grouped and
color-coded by the type of function so that you
can easily find what you are looking for.
•
Easy-to-understand two-color graphic display
A two-color LCD panel has been adopted.
The display details can be identified by color,
and easy-to-understand icons are also used.
•
Digital setting of maximum sewing speed
•
Sewing speeds are displayed in a
sewing speed control display
The sewing speed can be changed easily at
the control display, which allows the operator
to check the sewing speed visually.
•
Easy setting using function key
Settings relating to sewing machine operation
can be carried out at a touch using the
function keys on the operation panel.
•
The number of stitches is counted
The number of stitches you have sewn is counted and a
graphic display lights and buzzer sounds when a preset
number is reached. The stitch counter lets you know how
much lower thread you have used and gives you an indication
of sewing length. It can be used as a production counter as
well.
•
Easy to view with no eye fatigue
Because the panel uses a backlit LCD, the displays are easy to see.
The glare from the operation panel surface has been eliminated, so
that it is much less reflective and does not cause eye fatigue.
•
Complete dry type (
45
)
Max. sewing speed 4,000rpm
The maximum sewing speed can be easily set
using the digital operation panel.
•
Examples of sewing using operation panel
Belt-loop, Bar tacking
Name tags
Pleats, Curtain
Continuous
back tack
Name label stitch
Pleats presser
stitch
Low noise and low vibration for stress-free operation
Premier energy-saving design in the industry
Easy to maintain
Maintenance tasks that require the machine head to be tilted back
have also been made safer. A safety sensor is provided to stop the
motor from operating while the head is tilted, even if the treadle is
depressed.
•
Machine head can be tilted back easily
The complete dry-type head uses a lubrication-free rotary hook, and no
oil is used around the needle bar, thread take-up or rotary hook
mechanism. As a result, no lubrication is required at all.
•
No lubrication required (
45
□
)
The running time for the sewing machine is recorded, and when it is
time for the greasing maintenance that is indispensable for dry head
sewing machines to be carried out, a notification appears automatically
on the panel. (Use only special Brother grease to ensure excellent
durability.)
•
Automatic greasing notification
The oil level inside the gearbox can be checked visually. In addition,
the gearbox has a heat-discharging construction with fin.
•
Gearbox oil level can be checked at a glance
The sewing machine frame is highly rigid, and
computer analysis has been used for designing
everything down to the smallest detail, to
create a shape which produces less noise and
vibration. This reduces operator fatigue and
greatly eliminates stress.
The brand new built-in direct-drive motor has an
optimized design that utilizes magnetic field
analysis, and is the most compact motor of its
type in the industry. And instead of using a
V-belt, the drive power is transmitted directly to
the mechanisms with no losses, so that any
losses in energy are reduced to an absolute
minimum. This new motor has an energy-saving
performance that is a further improvement on
previous direct-drive motors. Compared to
V-belt driven systems (AC servo motors),
losses in efficiency are reduced by
approximately 50%* (compared to the previous
Brother model), meaning that this model tops
the industry in energy saving.
* Sewing speed : 5,000 rpm
70
75
80
85
3000
4000
5000
S-7200A
Previous model
(rpm)
(rpm)
Sound level
Oscillation level
(dB)
(cm/sec)
S-7200A
Previous model
0
100
200
300
400
500
600
50
33
25
Operation Rate (%)
Power Consumntion(Wh)
EC motor
Clutch motor
AC servo motor
S-7200A
0
0
3000
1
3
2000
2
4000
5000
1000
Safety
sensor
Excellent material compatibility
Higher sewing quality
Easy for operators to use
Sewing
direction
•
Attractive sewing finishes for a wide range of materials
The S-7200A has an optimized needle bar, thread take-up loci and
feed loci. In addition, the adjustment range for the feed dog has been
increased, allowing a greater range of different types of material to be
sewn. Attractive finishes can be obtained with no puckering or
slippage, even with materials that slip easily and stretch materials.
•
A penetration force boosting function lets you sew even heavy materials
If the needle penetration resistance increases, such as when sewing heavy materials and materials with
joints, vibration control automatically increases the penetration force. (Patent pending)
Feed dog height adjustment range
Previous model
S-7200A
0.8mm
0.9-1.0mm
1.0mm
1.1mm
1.2mm
S
3
5
1.3mm
The presser foot adjustment screw
has an adjustment scale. The
presser foot pressure can be
controlled numerically, so that you
can reset it easily and accurately
when required.
•
Presser foot pressure can
reset easiling
You can set whether or not the
tension release operates when
the presser foot is raised.
Uniform thread tension can be
obtained even while the presser
foot is raised when sewing
around corners, thus maintaining
attractive finishes.
•
Adjustable tension release
operation
This feature is ideal for
use when sewing thin
materials that can
easily pucker when
reverse stitches are
sewn. Condensed
stitches have a smaller
sewing pitch and they
help prevent fraying.
•
Condensed stitching is possible
A rotary-type thread trimmer is
used to provide stable thread
trimming regardless of the type
of material being sewn.
•
Stable thread trimming
The position of the machine head
hinge has been shifted 150 mm to
the right, on the other side of the
needle bar from the operator.
•
Smooth sewing with no hinge
in the way
The bobbin winder is located at
the top of the sewing machine
arm. This makes it easy to adjust
the bobbin winding amount and to
replace the bobbin.
•
Easy-to-operate bobbin winder
A variety of attachment taps are
provided on the top of the bed.
•
Various commercially available attachments
can be installed quickly and easily
A micro-adjustable type floating presser
foot is equipped as standard. This
device is ideal for controlling presser foot
floating in materials that stretch easily
and materials with long pile. It prevents
seam slippage and also prevents
damage to the material. In addition,
three-dimensional articles with irregular
curves can also be handled with ease.
•
Optimized floating presser foot
for long pile materials
•
Because no V-belt is used belt
shavings will not stain the material
Easy for operators to use
Wide arm pocket makes handling sewing articles easier
Friendly to the environment
Ergonomic design provides ease of use down to the finest detail
Options
71mm
The height of the
arm jaw is raised
to 71mm. Plenty of
space is provided
around the needle
so that the sewing
area can easily be
checked visually.
•
Unobstructed view of needle area
The adoption of a compact motor
means that the distance from the
pulley to the operator is shorter
505mm, and so the pulley can be
operated more easily.
•
Easy pulley operation
The S-7200A has an arm pocket width of 300 mm and an arm
height of 136 mm. These wide arm pocket dimensions make it
much easier to move and position the sewing article.
Brother has created its own "Brother Green Label" classification for products that
conform to the ISO 14021 international industrial standard and the JIS Q14021
Japanese industrial standard. The S-7200A complete dry-type head conforms to
this classification. The premier energy-saving design in the industry*
1
, zero
consumption of sewing machine oil and a 35% or more reduction in vibration*
2
makes this a very environmentally friendly sewing machine.
The S-7200A is easy to understand, easy to operate and has an ergonomic design that eliminates
operator fatigue. It has been designed from the point of view of the operator to emphasize ease of use.
The knee lifter and the needle
up stop (reverse rotation)
function together provide 16
mm of space underneath the
presser foot. This makes it
much easier to insert and
remove heavy material without
it getting caught on the needle.
•
Maximum presser foot lift amount 16 mm
The sewing speed at the sewing
start can be selected in
accordance with the treadle
depression amount. You can set
the speed according to the
preferences of the operator.
•
Selectable starting speed
Adoption of the direct-drive system means
that there is no motor underneath the
table. The extra space thus provided
underneath the table can be effectively
utilized to make working more comfortable.
•
Extra space makes working
more comfortable
This is located in a place
where it can be pressed
easily in order to increase
working efficiency.
•
Quickback device
When this sensor detects the edge of
the material, the cloth is
automatically stopped in the specified
position. This feature contributes to
more even sewing finishes and
increases working efficiency.
Material edge sensor
Solenoid type presser foot lifter
(Built-in head)
This can be set for use such as a
bobbin thread counter reset or
as a sewing speed select. It is
located in a position where it can
be easily pressed.
Option switch
Premier energy-saving design in the industry*
1
Zero consumption of sewing machine oil
35% or more reduction in vibration*
2
16mm
300mm
136mm
505mm
*1 Comparison by Brother with other products in the same class as of February 2003.
*2 Compared to previous DD7100 model.
Specifications
4
S-7200A-
0
3
5
Minimum lubrication
Semi dry
Complete dry
Lubrication type
Lubrication type
Use
Max. sewing speed
End backtacking speed
Max. stitch length
Presser foot height
Needle bar stroke
Needle(DBx1
DPx5)
Rotary hook*
2
Feed dog
Feed dog height
Weight
Arm pocket size
Arm bed size
Bobbin winder
Machine head drive
Motor
Control circuit
Model
S-7200A
Quick
back
Thread
wiper
Solenoid-type
presser lifter
S
3
5
For light-weight
and difficult-to
sew materials
For medium-
weight materials
For heavy-
weight materials
Use
1-needle
Thread trimmer
Lock stitch
*1 When sewing at speeds of 4,000 rpm or higher, set the stitch length to 4.2 mm or less.
*2 When using lubrication-free rotary hook, set the Max. sewing speed 4,000 rpm or less.
403
For medium
materials
5,000 rpm*
1
5mm
11-
18
Lubricated / for
medium materials
4 row
0.8mm
1.2mm
0.8mm
0.8mm
0.8mm
0.8mm
4 row
4 row
4 row
4 row
4 row
31mm
35mm
29mm
31mm
29mm
31mm
Lubricated / for
heavy materials
Lubricated / for
light materials
Lubricated / for
medium materials
Rotary hook RP
(lubrication-free
rotary hook)
Rotary hook RP
(lubrication-free
rotary hook)
19-
22
NS
9-
11
11-
18
NS
9-
11
11-
18
5mm
4.2mm
5mm
4.2mm
5mm
4,500 rpm*
1
4,000 rpm
5,000 rpm*
1
4,000 rpm
4,000 rpm
For heavy
materials
For light materials and
difficult-to sew materials
For medium
materials
For light materials and
difficult-to sew materials
For medium
materials
Minimum lubrication
High-speed spindle
Rotary hook
A standing operation connector is equipped as standard.
Needle bar/
Thread take-up
High-speed spindle
High-speed spindle
Special Brother grease
Special Brother grease
Semi dry
220-3,000 rpm
Presser bar lifter 6 mm, Knee lifter 16 mm, (Solenoid-type presser lifter 10 mm)
Machine head: 44kgf, Control box: 6.1kgf (low voltage) 9.2kgf (high voltage), Operation panel: 0.8kgf
Arm pocket width: 300 mm, Arm height: 136 mm
517.5mm
178mm
Included in machine arm
Direct drive mechanism
AC servo motor (4-pole, 450W)
Microprocessor
Single-phase 100-120V, 200-240V, 3-phase 200-240V,380-415V Power rating 400VA
220-3,000 rpm
Complete dry
405
43S
433
45S
453
To preserve environment, this catalog is produced using the ECF paper (Elemental Chlorine-Free) and SOY INK.
R
15-1,Naeshiro-cho,Mizuho-ku,Nagoya 467-8561, Japan.
Phone:81-52-824-2177 Fax:81-52-811-7789 http://www. brother. com/
Product specifications are subject to change for improvement without notice. Please read instruction manual before using the machine for safety operation.
Printed in Japan 2003.9. I3030829B Vol.3
Start backtacking
and continuous
backtacking speed
Lubricating
oil
Power requirement
Power consumption