KANSAI SPECIAL RX series User manual

Incii.!>lrial Sawing Machines
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RX SERIES
MECHANICS MANUAL
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From the library of: Superior Sewing Machine & Supply LLC

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Table of Contents
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"I.^^iooper Angle (Refer to Rg 1& 2)
Fig 1: The correct angle is 2'30'as demonstrated
in Figl. The tip of the looper should be
1mm to 1.2mm forward of the front edge
of the looper at apoint measuring 25mm
to the right of the tip.
Fig 2: In order to adjust this angle refer to Fig 2.
Loosen screw (A) to adjust looper angle.
Note: The standard position is automatically set
as long as screw (A) is tightened squarely
onto the flat on the looper shaft.
(3^
ooper Timing (Refer to Rg 3-5)
Fig 3: As the looper moves to the left, behind the
needles: As the tip of the looper reaches
the center of the left needle, The
dimension from the tip of the looper to the
top of the eye of the needle should be 1 to
1.2mm.
Fig 1
25mm
Fig 2
Fig 3
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Fig 4: As the looper returns to the right, in front
of the needles: As the tip of the looper
reaches the center of the left needle, the
dimension from the tip of the looper to the
top of the eye of the needle should be
0.2mm.
Fig 5: To adjust the timing, loosen screws (A)
and shift the position of the upper belt
gear by holding the gear in place and
turning the handvvheel(+) to advance or
(—) to retard the looper.
(^^^^^ooper-Needle Distance (Refer to Fig e& 7)
Fig 6: When the looper isat its far right position,
the tip of the looper should be approxi
mately 6.5mm from the center of the
needle bar.
This dimension is standard for all gauge
sizes.
\2
Fig 4
Fig 5
Fig 6
6.5mm
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Fig 7: Because it is common practice to measure
looper- needle distance from the tip of the
looper to the center of the right needle
corresponding looper-needle distances
for various gauge size are in table 1.
To adjust, loosen screw (1) and move
looper holder (2) right or left.
Table 1
Gauge size
1/8"
3.2mm 4.9mm
5/23"
4.0mm
4.5mm
3/16"
4.8mm
4.1mm
7/32" 5.6mm
3.7mm
1/4"
6.4mm
3.3mm
4yNeedle Height (Refer to Fig 8)
When the needle bar is in its highest position, the
mark P on the handwheel should meet the mark A
(Refer to Fig 8)
As the looper moves to the left, behind the needles,
the tip of the looper reaches the center of the left
needle.
At this time, the distance from the tip of the looper
to the top of the eye of the left needle must be 0.8
to 1.2mm.
To adjust the height and alignment, loosen screw
(A); set correct position; and tighten screw (A).
Make sure that the needles are aligned in the
center of the needle plate holes.
Fig 7
(a)
Fig 8
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ooper-Needle Clearance (Refer to Fig s)
When the tip of looper (A) meets the left needle (C)
the clearance between them should be 0.2mm to
0.3mm. This adjustment can be made by loosening
screw(D)on the looper holder, moving the looper
frontwards or backwards to the appropriate
setting, and retightening screw (D).
Note: As the looper moves to the left, behind the
needles, the tip of the looper (A) will
contact the right needle slightly (0~
0.05mm).
(^^^I^Looper Avoid Angle (Refer to Fig 10-13)
Fig 10
0.2- i
0.3mmr9 °
0.2-
0.3mm"T?
Fig 12
Fig 9
3 Needle
2 Needle
Fig 13
Fig 10: Shows the correct looper motion
Fig 11: Shows avoid eccentric (A), adjustment screw (B), advanced timing mark (C), retarded
timing mark (D) and standard timing mark (E).
Fig12: Shows exact location of the avoid eccentric in relation to the machine.
Fig 13: A - Standard Angle Path
B - Advanced Angle Path
C - Retarded Angle Path
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getting The Looper Avoid (Refer to Fig 14-15) ^
Note: The looper avoiding motion requires adjustment when a different diameter needle is to be
used. c
Fig 14
Fig 14: When the looper moves from its left-most
position, deflection of the needle should
beginwhen the tip of the left-most needle
is 3.0mm-3.5mm from the looper eye. The
contact is from 0.3mm—0.6mm on the
back of the looper.
Fig 15: Align dot (D) with mark (C) for standard
needles. In the case of extremely fine
needles loosen screw (A) and nut (B) and
move the dot (D) towards the rear of the
machine. In the case of extremely thick
needles move dot (D) towards the front of
the machine.
Cl
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j L
3~3.5mm
0.3-~0.6irm
Fig 15
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'f;®Rear Needle Guard (Refer to Fig i6~i9)
Fig 16; Height Adjustment
With needles in the down position set line
(A) of needle guard even with the center of
the needle eyes.
Fig 17A: Clearance (Right Needle)
The rear needle guard contacts the right
needle slightly (0.0-0.5mm) so the looper
will not contact the needle as it moves
from right to left.
Fig 17B: Clearance (Left Needle)
The clearance adjustment between the
left needle and the rear needle guard is
0.05~0.1mm.
Fig 18: To Adjust
Loosen screw (C) to adjust front-back
position. Loosen screw (B) to set height
and angle.
fig 19: Standard setting
Align the mark on eccentric (D) with the
mark on the main shaft for standard
needle guard timing.
Fig 17A
Right Needle
Contact
0 to 0.05mm
Fig 18
Fig 19
inc
Fig 16
Fig 17B
Left Needle
Clearance
0.05 to 0.1mm
— c
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ront Needle Guard (Refer to Fig 20^-22)
Fig20: Front Needle Guard Height
Set the contact edge of the front needle
guard 1.8 to 2.3mm above the tip of the
left needle when the tip of the looper is
behind the center of the left needle.
Fig 21: Front Needle Guard Clearance
The clearance between the needles and
the front needle guard should be the follo
wing:
A) 0.00.05mm for the left needle
B) 0.1 ~0.2mm for the right needle
Fig 22: Adjustments
A) To adjust the height and angle loosen
screw (A)
B) To adjust the front-back position
loosen screw (B)
0.0~0.2mm
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|lwTop Cover Spreader (Refer to Fig 23-27)
Fig 23: Screw (A) allows for adjustment of the left
most position. Screw (B) is for height
adjustment of the top cover spreader and
clearance between the spreader and the
needles.
Fig 24: The proper distance between the top
spreader and the needle plate is 8.5-
9.5mm. (Refer to table 2 for recommended
distance according to gauge size.)
Table 2
Gauge
Spreader Height
1/8"
3.2mm
9.5mm
5/23"
4.0mm
9.5mm
3/16"
4.8mm
9.5mm
7/32"
5.6mm
8.5mm
1/4"
6.4mm
8.5mm
Fig 25A:Set the tip of the thread hook 4.5 to 5.5mm
to the left of the center of the left needle.
Fig 25B:Set the tip of the thread hook (C) 0.5 to
0.8mm from the front of the left needle.
Fig 26: To adjust spreader stroke loosen nut (D)
and raise or lower the connecting pin (E).
Fig 27: To shorten spreader stroke for narrow
gauge sizes move the connecting pin
towards (a). To increase spreader stroke
for wide gauge sizes and long stitch
lengths move the connecting pin towards
(b).
8.5~9.5mm
Fig 25 A
4.5~5.5mm
rt..
Fig 26
Fig 27
0.5-
0.8mm
Fig 23
Fig 24
Fig 25 B
I:y.
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op Cover Thread Guide (Refer to Rg 28-'30)
Fig 28: Proper setting of the top cover thread
guide(D) is0.5-0.8mm above the spreader.
The proper setting of eyelet (B) is 1.0mm
above thread guide (D).
Fig 29: At the time the top cover looper is in its
right-most position, the tip of the thread
hook should be visible in the center of the
slot of the thread guide (D).
Fig 30:
Align the top cover thread eyelet (F)
directly in front of top cover thread guide
(D) slot.
To do this, Loosen screw (G).
fl^Top Cover Timing (Refer to Rg 31 & 32)
Fig 31: This diagram shows the proper alignment
of the top cover spreadereccentric (B)and
top shaft. For proper alignment it is
recommended that timing mark (D) is
aligned with mark (C) on top shaft.
Fig 32: To adjust the top cover timing, loosen
screws (A) in Fig 31and turn the eccentric
towards (E) to advance the timing or
towards (F) to retard the timing.
Note: The standard setting allows the needle
bar to drop slightly before the spreader
returns to the right.
Fig 28
Fig 29
Fig 30
Fig 31
Fig 32
i
0 0
0.5iTtrD
o
o
o
\ B
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Feed Dog Alignment (Refer to Fig 33 & 34)
Fig 33: Position for main feed bar (B) left-right is
controlled by feed rocker guides held in
place by screws (C & D), feed bar guide
plate held by screws (J) and feed lifting
shaft (G) held with collars (E) and feed
lever screws (F). Front-back position of
differential is regulated by feed shaft (I)
held by screws (F).
Fig 34: To center the front feed dog, loosen screw
(G) and adjust eccentric (F) centering the
feed dog for equal clearance at maximum
differential feed length.
Feed Dog Height (Refer to Fig 35 & 36)
Fig 35: At their highest point, both the main and
differential feed dogs should be no more
than one tooth height (1.01.2mm) above
the needle plate. To adjust the height of
the rear feeder loosen screw (A). To adjust
left-right position of differential feeder
loosen screw (C).
Fig 36: It is important that the teeth of the rear
feed dog and those of the front feed dog
are at the same height above the needle
plate. To adjust tilt of feeders loosen
screws (D) in feed lifting lever (C) and
adjust feed lifting shaft (E) for correct tilt
angle.
Fig 33
Fig 35 1.0--1.2mm
Fig 36
10
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llvStitch Length (Refer to Fig 37-40)
Fig 37&38:
To adjust stitch length, press main stitch
regulator button (A) and turn hand wheel
until button (A) drops into detent. Then
turn the handwheel in the desired
direction to increase/decrease main feed
stitch length. The marks on the hand-
wheel (S, M, L) will align with pin(B).
Table 3
Stitch
Stitches
Stitches
Length Per inch Per 30 MM
3.6mm
7.0 8.0
2.4mm 10.5 12.5
1.4mm 18.0 21.0
Fig 39: Adjust (C) to obtain desired feed ratio.
Loosen the handnut (E, Fig 40), turn (C) to
desired position, and retighten handnut (E).
Table4-Dlfferenlial Feed Ratio
Stitch
Maximum
Minimum
Length Feed Ratio
Feed Ratio
3.6mm 1:1.1
1:0.3
2.5mm 1:1.6
1:0.4
2.0mm 1:2.0
1:0.5
1.4 mm
1:2.9
1:0.7
Fig 40: It is possible to vary the differential feed
intermittently.
To do this, connect a chain, fastened to a
foot pedal, to the front of the lever. Next,
loosen hand nut (E), set the upper limit of
the lever with the adjusting knob (C).
set the lower limit of the lever with the
stopper cam (D). When working the
differential intermittently, leave handnut
(E) loose.
11
Fig 37
Fig 39
Fig 40
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^^Presser Foot (Refer to Fig 41-43)
Fig 41: To ensure proper sewing the presser foot
must be centered above the needle plate
so the needle holes line up correctly with
the needles. To adjust loosen screw (A).
Fig
42: The proper height for presser foot lift is
6-7mm above the needle plate.
Fig 43: To set presser foot lift height adjust (B) to
stop foot lift lever at desired height and
lock nut (C).
Note: During the sewing operation use only
enough pressure on the presser foot to
move the garment smoothly.
Over pressuring the presser may cause
damage to the garment and the machine.
(^)E^e\e\ Adjustments (Refer to Fig 44-47)
Fig 44: Silicone Tank—The eyelet should be
appro.ximately 15-^200101 above the center
of screw (A).
Fig 42
L
Fig 43
Fig 44
Silicone Tank
1;?
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Fig 45: Needle Thread Take Up
The distance from the eyelets to the first
screw (B) should be 55mm. To adjust,
loosen screws (B) and (C) and move the
eyelet left or right. Retighten(B) and (C).
At the time the needles are in the lowest
position, the take up should be
horizontal. To adjust, loosen screw (D),
and move the take up to the horizontal
position. Retighten (D).
Fig 46; Take Up Timing Adjustment-To adjust
take up timing remove top cover to gain
access to collar and driving lever. The
distance between collar and driving lever
is 5.5mm.
Fig 47: Needle Bar Thread Take Up
Standard Setting: When needle bar is as
its lowest point, the eyelet (A) should be
2mm above the thread takeup (B). To
decrease loop size lower the takeup. To
increase loop size raise the takeup or place
thread over both sides of thread takeup
(B).
13
55mm
Fig 45
Fig 46
5.5mm
Fig 47
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^ISnhe Timing Belt
. O.
Note: There are 3 sizes of belts for RX-9000 series machines (A, B, C). During the life of the
machine the belt may stretch and the machine may require another belt. Belt (A) is the
largest and (B) and (C) are slightly smaller (1-2.5mm difference)
(I^^Steps To Replace The Timing Belt (Refer to Fig 48-52)
Fig 48: Remove the top cover and the oil pan
from the machine. (Drain Oil before
removing pan)
Fig 49: Loosen screws (A) and remove the upper shaft.
Fig 48
Fig 49
14
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Fig 50: Loosen screw (J) remove pulley (I). Loosen screw (H) and remove fan (G). Remove screws
(F) and remove flange (E). Loosen screws (C) and remove bearing (D).
Fig 50
Fig 51: Remove the belt as shown.
Fig 52: Place the now timing belt on the timing
pulley on the lower shaft.
Replace following parts:
a. Replace the bearing, "D"
I). Replace the flange. "I*'"
c.
Replace the fan, "Ci"
d. Replace the pulley, "I"
Note: Wlien the bearing is replaced on the lower
sliafl, he sure the top screw is set securely
into the si)ot on the siiaft.
Replace tiie upper shaft set into the
machine by passing the shaft through the
timing belt and inserting the end of the
shaft into the top shaft union.
Turn the pulley until the looper is in its
rightmost position.
Move the needle bar by hand until it is in
its lowest position.
Turn the handwheel, being sure that
neither the looper nor the needle bar move
from their e.xtreme positions, until the "P"
mark on the handwheel is in-line with the
brass stud ("0") on the machine.
Retighten tlie set screws ("A", Fig 49) on
the top shaft union.
15
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