Brother Sewing Machine KE 484C User Manual

Electronic lockstitch pattern tacker with treble hook  
KE-484C  
Knife method cuts even extra thick threads  
accurately.  
Pneumatic drive wipes the thread smoothly.  
Stable thread tension release improves  
sewing performance.  
Stitch patterns can be changed easily.  
This electronic pattern tacker is ideal for sewing heavy and  
extra-heavy materials such as seatbelts. It gives excellent  
economy, with shorter cycle times and easier maintenance.  
Attractive and accurate sewing finishes for extra-heavy materials  
A variety of thread types up to #0 can be cut accurately.  
A knife method is used for thread trimming. When the knives are  
meshing, the movable knife and fixed knife are driven by a  
pneumatic cylinder. Extra thick threads of up to #0 can be cut  
accurately regardless of the material of the thread.  
The speed of the knife is controlled by a pneumatic cylinder  
which reduces excessive spinning of the bobbin during thread  
trimming. The thread is held securely from the start of sewing so  
that stable seams are created.  
Unlike the heat cutting method, the knife method does not require a heater to be warmed up, so it  
reduces cycle time. It also saves electricity costs and makes temperature control unnecessary. In  
addition, the knives are much more durable than the heater wires, so that the knives can accurately cut a  
greater variety of threads. They are also easier to maintain.  
The thread wiper is also driven by a pneumatic cylinder. The upper thread can be wiped accurately even  
under conditions where the thread is difficult to pull out of the material.  
Optimized thread tightening creates attractive sewing finishes.  
A pneumatically-driven thread tension release mechanism has been adopted. Compared to cam-type  
methods, this mechanism provides much stronger thread tension. In addition, the thread tension discs  
open and close accurately even when high tensions are applied to the upper thread, so that the upper  
thread trailing length is kept at a constant length and problems at the sewing start are prevented. Stable  
and accurate thread tightening is provided even under high load conditions, so that good thread tightening  
can be obtained even when sewing through several layers of material, thereby increasing the range of  
sewing applications. Plus, a new thread take-up mechanism ensures that the thread tightening is optimum  
for the material being sewn.  
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Reduced bobbin replacement frequency  
The triple capacity rotary hook allows 3 times the lower thread to be wound on compared to standard  
bobbin. This reduces the frequency of bobbin changes and also reduces overall cycle time.  
Excellent durability  
Bearing brackets have been adopted as the needle bar and thread take-up shaft brackets. These bearings  
ensure stable and accurate performance with excellent durability, so that stable sewing is possible using  
threads of up to #0 in thickness. They improve reliability when sewing under heavy loads, and increase the  
range of sewing possibilities.  
Built-in Motor system  
Improved productivity  
An built-in motor system that is ideally suited to cycle  
sewing machines has been adopted. This system  
reduces overall cycle time.  
Low noise and low vibration  
Integration of the motor and the machine head and the  
adoption of a timing belt make sewing machine  
operation much quieter and reduce machine vibration.  
Easier maintenance  
Periodic adjustment of the belt tension and adjustment  
of the motor position are no longer necessary. The  
machine head can also be tilted back to carry out  
adjustments without the need to remove the belt cover.  
No contamination of the material  
The adoption of a timing belt eliminates the problem of belt shavings soiling sewing products.  
Options  
Peripheral equipment  
Thread breakage detector  
Home position standard plate  
PS-3000  
Programming software for electronic  
pattern sewer  
The automatic stop is activated and a buzzer  
sounds to warn the operator when a thread  
breakage is detected.  
This is a software program which creates  
new sewing patterns using a personal  
computer.  
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Specifications  
KE-484C-X  
At the time of shipment, the P-ROM will be blank and the presser foot and feed plate will be unmodified.  
(The presser foot, needle plate and PROM specifications can be specified in detail to suit your  
requirements when ordering.)  
Extra heavy  
materials  
Max. sewing  
speed  
Lock stitch  
Triple hook  
Heavy materials  
Sewing area  
Stitch length Thread trimmer Thread wiper  
Air consumption  
Model  
0.5MPa  
26 /min  
100
ן
60mm 0.1-10.0mm  
KE-484C  
2,200 rpm  
When stitch length is 3mm or less.  
*
Feed mechanism  
Needle  
R- intermittent feed mechanism (pulse-motor driven mechanism)  
DP X 17 #25  
Variable  
No. of stitches  
(
)
Max. stitch number  
Work clamp lifter  
Work clamp height  
Thread take-up device  
Data storage method  
No. of user programs  
No. of cycle programs  
No. of stored data  
Enlarging and reducing patterns  
Motor  
20,000 stitches including 10,000 stitches which can be added  
Pneumatic type  
25 mm max.  
Standard equipment  
(
)
P-ROM Any sewing pattern can be added using PS-3000.  
16  
4
Up to 100 patterns can be added. Total number of stitches of stored data which can be added is within 10,000.  
20 - 200  
Three-phase 400 W induction motor  
(
)
(
)
(
)
Weights  
122.6 kgf 100V, 110V , 117.6 kgf 240V, 380V, 400V , 112.6 kgf 220V, 230V  
Machine head: 56 kgf,  
Operation panel: 0.6 kgf,  
(
)
Control box: 19 kgf 100V, 110V  
(
)
(
)
14 kgf 240V, 380V, 400V , 9 kgf 220V, 230V  
Single-phase 100V, 110V, 220-230V, 240V,  
3-phase 200V, 220V, 380V, 400V  
Power source  
Safety deviice  
Max. electric power consumption 600VA  
Intermediate stop function  
Product specifications are subject to change for improvement without notice. Please read instruction manual before using the machine for safety operation.  
R
15-1,Naeshiro-cho,Mizuho-ku,Nagoya 467-8561, Japan.  
:81-52-824-2177  
Phone  
:81-52-811-7789  
Fax  
To preserve environment, this catalog is produced using the ECF paper (Elemental Chlorine-Free) and SOY INK.  
Printed in Japan 2003.4. I3040834B Vol.1  
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