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Brother S-7200A Manual

Made by: Brother
Type: Manual
Category: Sewing Machine
Pages: 6
Size: 0.29 MB

 

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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

 


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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

Pocket

Continuous 
back tack

Name label stitch

Pleats presser 
stitch

 


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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

 


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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

 


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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.

 


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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