Brother RH-9820 User manual

RH-9820
The world’s highest max. sewing speed 2,500 sti/min enhances productivity
The maximum sewing speed of 2,500 sti/min has been
achieved by the adoption of an optimal machine structure for
high-speed drive. The speed is significantly enhanced from
the former 2,200 sti/min level.
By enhancing the rigidity of the needle bar-area parts (patent
pending) and having the feed mechanism and needle bar
rotating mechanism servo-controlled, the operating time has
been reduced, resulting in 13% reduction of the machine time
compared with the conventional model.
･Enhanced productivity with the world’s
highest max. sewing speed 2,500 sti/min
･Fine stitches with high-precision
stitch point
･Large arm pocket allowing
smooth material handling
･Easy-to-use operation panel
The further-improved, reliable sewing mechanism is optimally controlled by the
most advanced electronic technology.
Productivity and sewing quality are combined at the highest level ever.
Electronic eyelet button holer
Machine time
-01 Spec., 100 stitches, Cutting after sewing,
Sewing length 22mm, Back material setting
(Sec)
13% reduction
4
3
2
0
(sti/min)2,2002,200 2,500
Conventional model RH-9820

Large arm pocket providing ease of operation
The arm pocket of 120 mm depth gives a sufficient space, enabling material setting smooth. It is the
most suitable for sewing of vertical buttonholes and hip pocket parts. The arm shape provides a good
view of the needle area, allowing operators to observe the sewing operation.
Sewing with less noise
With thorough review of the mechanisms causing
noise, quieter sewing even at higher sewing speed
than the conventional model has been realized. The
machine is made with a sound design gentle to ears,
eliminating impact noise.
The vibration of the feed base which is transmitted to
an operator is also reduced. The working environ-
ment with less operator fatigue can be materialized.
Fine stitches are available
Precision of stitch point has been improved
With the highly-rigid feed mechanism with servo
control, stitch point is very precise and feed drifting,
which is specific to electronic sewing machines, does
not occur even in high-speed sewing of weighty
mate-rials. The servo control also makes home
position de-tection unnecessary.
Skipped stitches are reduced
The shape of the looper, the thread take-up amount
and some other parts have been reviewed. Skipped
stitches and insufficient thread tightening due to a
change of thread tension are reduced, regardless of
types of threads. The range of sewing capability has
been enlarged.
Range of sewing capability
RH-9820
Conventional model
(low) (high)Thread tension
Approx. 20%
enlarged
Zigzag width 3.0 mm, Cutting after sewing,
2 pieces of polyester serge (one piece with interlining on one side)
Spun yarn #40, Lower thread tension: 30g
Sewing speed: Conventional model - 2,200 sti/min, RH-9820 - 2,500 sti/min
Sound
(sti/min) 2,2002,200 2,500
Conventional model RH-9820

Economical model with low power consumption
With the adoption of a energy-saving compact motor,
electric power consumption has been lowered by more
than 35% compared with the conventional model, while
enhancing productivity with the improved max. sewing
speed. The RH-9820 is the most energy-saving electronic
eyelet buttonhole sewing machine in the market.
Semi-submerged installation is available
By using the optional parts for semi-sub-
merged installation, favorable operation
style can be selected.
Easy adjustment favorable to maintenance staffs
While continuing the conventional basic adjusting method, many improvements have been made.
Installation to production lines and fine adjustment of the machine can be done in a shorter time.
·The number of air tubes has been reduced, saving the trouble of connecting.
·Adjustment of the needle bar and the loopers can be made with the familiar, conventional method.
·An eccentric pin is adopted for the spreader. It enables adjustment without steps, making the operation
easier.
Durability of the machine has been improved
The rigidity of the machine arm has been enhanced. Nicking of the knife is substantially reduced by
minimizing lateral movement of the hammer against the knife.
Easy maintenance
Daily cleaning and lubrication can efficiently be done in a shorter time.
Centralized lubrication system
Eyelet cloth chips can be cleared
Cloth chips made at eyelet cutt-
ing can be cleared by air pres-
sure.
Thread waste can be collected
The machine is equipped with a
special pocket in which thread
waste can gather. This prevents
thread waste from littering, keeping
the working environment clean.
The places to supply oil have been concent-
rated into one. Minimum oil is automatically
lubricated with wicks from the oil tank to every
parts requiring lubrication, such as the areas of
the needle bar
and looper base.
The oil level win-
dow is laid out at
the position easy
to check.
Power consumption
2,2002,200 2,500
Conventional model RH-9820
35%
reduction 37% reduction
-01 Spec., Without bartack, Cutting after sewing,
Sewing length 22 mm, Front material setting
(sti/min)
Semi-submerge set
(SA7127-101)

Environment-conscious
Brother has established our original “ Brother Green Label” for the
products in conformity with ISO 14021 and JIS Q14021. The RH-9820
is certified as an environment-conscious sewing machine according to
“Brother Green Label” standard, such as “Reduction of power
consumption by 35% and above”, “Reduction of noise by 3 dB and
above” and “Use of lead-free solder for all PC boards”.
*Comparison with the conventional model RH-981A
Options
Cut length changeover device
(SA9313-001)
The device can switch between
two different cutting lengths.
(It is suitable for cycle sewing
of eyelet buttonholes and a
lapel buttonhole for men’s
jackets.)
Thread nipper device set
(SA7931-001)
It holds the upper thread end to
prevent thread cast-off at
sewing start and makes the
thread end sewn into the
stitches, providing a quality
finish.
Waist belt presser
(For L26 spec. SA7777-001)
(For L30 spec. SA7781-001)
When sewing a waist-belt part
having different thicknesses,
these work clamps securely
holds the article according to its
thicknesses. Flopping of the
cloth can be prevented.
Exchange parts set
(For circular stitching buttonhole)
(For -00 spec. SA7804-101)
(For -01 spec. SA7808-101)
Treadle unit*2(SA6567-101)
The operations of work clamp
lowering and machine start can
be made with a treadle. The
speedy operation is suitable for
buttonhole sewing of waist belt
requiring high productivity.
Please use a treadle and a connecting
rod on the market.
Two-pedal foot switch*2(S42838-301)
The operations of work clamp
lowering and machine start can
separately be made by foot-
operated switching. It is suit-
able for buttonhole sewing of
hip pockets requiring accurate
material positioning.
Hand start switch*2(SA7121-001)
The operations of work clamp
lowering and machine start can
separately be made by hand-
operated switching. It is useful
for standing operation.
*1For details, please consult your place of purchase.
*2The standard switch is different according to the destination.)
Gauge parts set (For -02 spec.)*1
L1422
L1826
L2230
L2634
L3442
Sewing length
14-22 mm
18-26 mm
22-30 mm
26-34 mm
34-42 mm
Part code
SA7750-201
SA7771-201
SA7752-201
SA7756-201
SA7764-201
Replacement parts set (For -01, -02 spec.)*1
-01 -02
-02 -01
Part code
SA7773-001
SA7784-101
When sewing with buttonhole spacing out of the given values, please modify the cloth
feed bar F assembly (option) for use. The number of buttonholes 2 to 9 is possible.
Buttonhole
spacing
No. of buttonholes
Vertical sewing
margin
Horizontal sewing margin
Max. overall feed amount
Standard size
38.1 mm, 50.8 mm,
44.45 mm
2-4
Large size
38.1 mm, 50.8 mm,
44.45 mm, 57.15 mm
2-6
152.4 mm 285.75 mm
L1422, L1826, L2230: 8-23 mm
L2634, L3442: 0-11 mm
31.5-41.5 mm
Distance
between buttonholes
No. of buttonholes
Horizontal feed amount
Vertical
sewing margin Horizontal
sewing margin
Industry’s top energy saving with the
direct drive system
Use of lead-free solder in all PCB
Significant extension of the hook’s
lifetime
Thread breakage detector
(SA8077-001)
It detects upper thread breakage
and then stops the sewing.
Air pressure detector
(SA9527-001)
It detects a reduction of air
pressure and then displays an
error code.
Fly indexer (For -02 spec.)
(Standard size SA8079-201)
(Large size SA8080-201)
The number of buttonholes can
be set and the fly can be fed
automatically. This device pro-
vides speedy sewing of fly
buttonholes.

English Chinese Japanese
Operation panel easy to use for everyone
The RH-9820 is equipped with a liquid crystal
display (LCD) and indicates display items with
icons and letters. Setting and check of sewing
patterns and change of sewing modes are easy
to understand and carry out.
Shortcut keys
Frequently-used settings such as sewing speed
and sewing length can be quickly set. Setting with one-touch key operation
The needle is rotated to make the needle’s
eye face front, enabling easier threading.
The material setting position (Front/
Back) can be set.
The timing of buttonhole cutting (Be-
fore sewing/After sewing) can be set.
Fine adjustment can easily be made
Fine adjustment such as cutting space and knife
position compensation can be made on the LCD
panel. As the items are shown with icons,
operators can operate intuitively without the
instruction manual.
Production counter
The number of buttonholes sewn can be counted
up to 999,999.
Sewing length ranges in -02 spec. are increased
In -02 spec., the range of sewing length with
each gauge has been increased to 8 mm. The
wider gauge ranges reduce the trouble of gauge
replacement.
*Change of the ranges L1422-L3442 is available by replacing gauge parts.
(For details, please consult your place of purchase.)
Ranges of gauges (sewing length)
Special specification (-02-L1826*) in Short-cut upper & lower thread trimmer spec.
With -02-L1826 spec., one single machine sup-
ports a wide range of applications, from straight-
bartack buttonholes for casual pants to taper-
bartack buttonholes for jeans. Sewing length of
this spec. is 18-26 mm.
*Special specification for Chinese market
Multilingual display
Display with icons and letters, easy to understand
18-26 mm 18-26 mm
Conventional
model
RH-9820
*L2230 is the standard.
Cycle sewing
Up to 9 programs, each with up to
9 steps, can be stored.

*1Special specification for Chinese market
*2When sewing the circular stitch by-02 specifications, lower threads won’t be cut.
*3Change of the ranges L1422-L3442 is available by replacing gauge parts. (For details, please consult your place of purchase.)
*4For Chinese market: DOx558 - NY2#12-#16 (ORGAN)
*5For Chinese market: -00: #16, -01: #14, -02: #18
All the threads are cut short by the
thread trimmers. This saves the
trouble of manual trimming and
reduces consumption of the thread.
RH-9820-
Specifications
-00 -01 -02
L2230 L1826*1
Jeans Jeans, trousers
22-30 mm
L1422 (14-22 mm)*3
L1826 (18-26 mm)*3
L2634 (26-34 mm)*3
L3442 (34-42 mm)*3
30 mm
24 mm
28 mm
18-26 mm
L1422 (14-22 mm)*3
L2230 (22-30 mm)*3
L2634 (26-34 mm)*3
L3442 (34-42 mm)*3
26 mm
20 mm
24 mm
Long thread cut
None
Ladies’ wear
Men’s wear, casual wear,
jeans, trousers
Only the upper thread is cut by the
thread trimmer. Buttonholes up to
50 mm long can be sewn.
Long thread cut
Long thread cut
Men’s wear, casual wear
Ladies’ wear,
jeans, trousers
All the threads are cut long by the
thread trimmers. The long thread
ends can be securely held in the
subsequent process. It is suitable
for cases that require accurate
short end or manual trimming.
Short thread cut
Short thread cut
Eyelet buttonhole : 8-50 mm
Straight buttonhole : 5-50 mm Eyelet buttonhole : 8-42 mm Straight buttonhole : 5-42 mm
1,000-2,500 sti/min
0.5-2.0 mm
1.5 - 5.0 mm (Up to 4.0 mm in mechanical, up to 5.0 mm with zigzag width compensation)
0-20mm
Foot switch (Treadle type, Two-pedal type), Hand switch (Two-lever type)
Intermittent feed by 3 pulse motors (X, Y,θ)
DOx558 Nm80 - Nm120 (SCHMETZ)
Japanese, English, Chinese, German, French, Spanish, Italian,
Portuguese, Turkish, Indonesian, Vietnamese and Russian
Emergency stop function and built-in automatic stopping device activated by safety circuit in case of trouble
AC servo motor 550W
Main regulator: 0.5 Mpa, Hammer pressure regulator: 0.4 MPa
43.2 l/min. (8 cycles/min.)
Machine head: Approx. 120 kg.,Operation panel: Approx. 0.6 kg., Control box: 14.2-16.2 kg. (depending on the destination)
Single phase 100V/200V, 3-phase 200V/220V/380V/400V, 400VA
DOx558 Nm100 DOx558 Nm90 DOx558 Nm110
16mm
3mm2.5mm
30 mm
22 mm
30 mm
12 mm as standard (Available up to 16 mm)
Specifications
Thread
trimmer
Main applications
Other applications
Features
Sewing shape
Sewing length
Length of work clamp (Standard)
Length of hammer (Standard)
Length of hammer (Accessory)
Sewing speed
Stitch pitch
Zigzag width
Zigzag width (Factory setting)
Taper bartack length
Height of work clamp
Starting method
Feed mechanism
Needle*4
Needle(Factory setting)
*5
Languages supported
for operation panel
Safety equipment
Upper shaft motor
Air pressure
Air consumption
Weight
Power supply
Upper thread
trimmer
Lower thread
trimmer
Printed in Japan 2011.3. I 6060906 B Vol.5
Product specifications are subject to change for improvement without notice. Please read instruction manual before using the machine for safety operation.
*2
To preserve the environment, this catalog was printed on ECF paper (Elemental Chlorine-Free) and using VEGETABLE OIL INK.
1-5, Kitajizoyama, Noda-cho, Kariya-shi, Aichi 448-0803, Japan.
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