Strobel 141-30 User manual

For the professional user
Für den professionellen Anwender
Betriebsanleitung
Class:
Klasse:
Model:
Ausführung:
Machine number:
Maschinen-Nr.:
Dated:
Stand:
141-30 Ausf. 6
141-40 Ausf. 7
Operating Instructions
Spezialmaschinen GmbH

Im Zeichen der Qualität
ou nd the Strobel trademark on every Strobel
machine leaving our works. And with good reason.
This symbol is a guaranteen of the high quality of
our products. Quality which creates trust – trust
in our technology, our service and, not least of all,
in our good name.
ie nden die Strobel-Schutzmarke auf jeder
Strobel-Maschine, die unser Werk verlässt.
Und das aus gutem Grund. Denn dieses Zeichen
garantiert Ihnen die hohe Qualität unserer
Produkte. Qualität, die Vertrauen schafft – in unsere
Technik, unseren Service und nicht zuletzt in unseren
guten Namen.
S
Y
The sign of quality

trobel clients know that they can expect a particularly
high standard of performance from our company and our
machines. Now you have settled for one of our products.
For us this is a source of encouragement and of obligation
to Justify your trust.
If you wish to prot from the performance and efciency of
your Strobel machine as long as possible, exact handling
and thorough care is necessary. For this reason we kindly
request that you read the operating instructions closely.
It provides all the information you need for trouble free
operation.
And if you do happen to need a spare part the enclosed
spare parts list gives a complete overview. It is clearly
classied according to components so that you can nd the
required part quickly and easily. In order to avoid errors we
request you to quote machine class, machine number and
part number completely on your spare part order.
We wish you lots of success in your work with your new
Strobel machine.
S
A decision with future
Spezialmaschinen GmbH

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Operating Instructions
STROBEL – Single Thread Overseam Machines
Class 141-30, 141-40
Contents
1General notes on safety............................................................................................4
2General .....................................................................................................................6
2.1 Operating instructions.....................................................................................6
2.2 Class identification, serial number and orientation of the machine.................6
2.3 Range of application and intended use..........................................................6
2.4 Technical Data................................................................................................7
3Installation and putting into service...........................................................................8
3.1 Unpacking the machine..................................................................................8
3.2 Installation ......................................................................................................8
3.3 Sense of rotation (Fig. 2)..............................................................................10
3.4 Motor drive via V-belts..................................................................................10
3.4.1 Tensioning the V-belt.......................................................................10
3.4.2 Positions of the machine..................................................................11
3.5 First lubrication (Fig. 6 and Fig. 7)................................................................13
4Instructions for use..................................................................................................15
4.1 Needles and threads (see chart, point “2.4 Technical Data”).......................15
4.2 Inserting the needle (Fig. 8)..........................................................................15
4.3 Threading and thread course (Fig. 1 and Fig. 8)..........................................16
4.4 Thread tension..............................................................................................17
4.5 Setting the stitch length................................................................................17
4.6 Adjustment of material guide........................................................................18
4.7 Inserting and removing the material (Fig. 11)...............................................20
5Machine maintenance.............................................................................................21
5.1 Oil drain pipe ................................................................................................22
6Variable sewing tools ..............................................................................................24
7Optional extras........................................................................................................28
7.1 Control panel................................................................................................28
Subject to change without prior notice

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1
The non-compliance with the following notes on safety can lead to bodily
injuries or to damages of the machine.
General notes on safety
1. The machine must only be operated by persons familiar with the relevant
operating instructions and who have been instructed accordingly.
2. Before commissioning also read the notes on safety and the operating
instructions of the sewing drive manufacturer.
3. The machine must only be operated according to its designation and not
without the appropriate guards; all explicit safety regulations must also be
observed.
4. For threading, for changing the reels, for exchanging sewing tools such as
needles, grippers, stitch plate, transport devices, if necessary cutter and
cutting block, for cleaning, when leaving the workplace and for
maintenance work, switch off main switch or pull mains plug. With a
mechanically operated coupling motor without activation lock, wait until the
motor has stopped.
5. General maintenance work must only be carried out by appropriately
instructed persons in accordance with the operating instructions.
6. Repair, modification and maintenance work must only be carried out by
qualified staff or by appropriately instructed persons.
7. During maintenance and repair work at pneumatic devices, the machine
must be disconnected from the pneumatic supply network. Exceptions are
only admissible during adjusting work and function test by appropriately
instructed qualified staff.
8. Work at the electrical equipment must only be carried out by qualified
staff.
9. Work at parts and devices under voltage is not allowed. Exceptions are
regulated by the regulation EN50110 (DIN VDE0105).
10. Modification or alteration at the machine must only be undertaken under
consideration of all explicit safety regulations.
11. Only spare parts released by us for use are to be used during repairs.
12. The commissioning of the upper part is prohibited until it has been
determined that the entire sewing unit complies with the regulations of the
EC guidelines.

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13. Warning notes in the operating instructions of the machine, which point
out special points of danger, are marked at the appropriate positions with
the safety symbol.
Warning notes in the operating instructions of the machine which point out
special dangers of injury for operating or qualified staff, are marked at the
appropriate positions with the symbol
It is essential that you observe and follow these notes as well as the
generally valid safety regulations.

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2
2.1
General
Any person involved in the installation, operation, maintenance and repair of
the machine must have read and understood the operating instructions and
mainly the safety instructions before starting the machine. Please open the
illustrations at the beginning of these operating instructions, so you can follow
the illustrations step by step while reading the instructions.
Operating instructions
2.2
The operating side of the machine is the basis for descriptions referring to
sides. The class identification (type) as well as serial and model number (after
the dash) are located below the left handwheel. These data are also shown on
the front page of the operation instructions.
Class identification, serial number and orientation of the
machine
2.3
Class 141-30
Range of application and intended use
Single Thread Overseaming Machine for sewing fur facings, heavy furs such as
lambskin, imitated furs and polishing wheels.
Class 141-40
High Speed Single Thread Overseaming Machine for fine fur stranding (let-out)
and general sewing operations.

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2.4 Number of stitches: Max mechanically admissible Technical Data
Cl. 141-30 2800 min-1
Cl. 141-40 4200 min-1
Recommended rated speed:
Cl. 141-30 2300 min-1
Cl. 141-40 3600 min-1
Machine pulley diameter dw 80 mm
V-belt profile 10 x 6 mm
Stitch length Cl. 141-30 3 - 6 mm adjustable
Cl. 141-40 0.6 – 2.5 mm adjustable
Kind of stitch Single Thread Overseam
Needle system 459R
Needle size Cl. 141-30 110 - 130
Cl. 141-40 40 - 120
Recommended thread twisted polyester filament
Recommended thread size
Cl. 141-30 50 -10
Cl. 141-40 130 – 80, 40 - 10
Stitch type 501
Kind of feed rear cup drive
Pneumatic connection 10 bar
Operating pressure 5 – 6 bar
Required space 0.6 m x 1.06 m
Noise:
Average noise level at a speed of
Cl. 141-30 n = 2300 min-1 LpAm 84 dB(A)
Cl. 141-40 n = 3200 min-1 LpAm 85 dB(A)
Noise test according to DIN 45635-48-1 KL3

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3
3.1
Installation and putting into service
Strobel machines are supplied either as complete units with head, stand and
motor, or head with motor only, or the head only.
Unpacking the machine
Due to the high weight and to avoid damages during transport, complete units
are packed in several smaller cartons.
Machine head and motor are removed from the stand. Reel stand, rods, oil and
other accessories are packed into the stand packing. Make sure that all
accessories have been unpacked before throwing away any packing material.
3.2
Installation
ATTENTION!
Danger of bodily injuries or finger bruises through pulling in
of garments or hairs!
The machine may not be operated without belt guards for
head and motor.
Caution: Screw oil drain pipe 133.0764 to the lid 112.0085 before setting the
top part on the table top. (See point “5.1“)
If the frame is not delivered by us as well, but rather the machine set on a
different frame, then the table top needs to be prepared as can be seen in the
table-top diagram.
ATTENTION!
Before putting the machine into service make sure
that the electrical connecting data on the motor’s
name plate, your electric network, and all other connecting
values, e. g. for the air, correspond to
the data shown on the machine and the operating
instructions.

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Fig. 1
All rust protection agents, such as Vaseline and similar agents have to be
wiped off carefully from the sewing tools before putting the machine into
service.

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3.3 The correct sense of rotation of the right hand wheel is clockwise in line of
vision on the hand wheel.
Sense of rotation (Fig. 2)
Fig. 2
3.4
3.4.1
Motor drive via V-belts
Tensioning the V-belt
Caution! Danger of injury!
When checking the belt tension, switch off the machine at
the mains. Do not operate the machine without the belt
guard. Otherwise there is a DANGER of crushing
fingers, of injuries to the body and of pulling in parts of
clothing.
The tensioning of the V-belt is carried out by swivelling the motor underneath
the table plate after releasing the retaining nut with SW 24.
The V-belt must not be tensioned too much, especially with the stop motor. You
should be able to depress it with light thumb pressure by about 2 cm.
Too little V-belt tensioning can impair the positioning of the machine and
therefore impair the function sequence.

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3.4.2 Positions of the machine
CAUTION! Danger of injury!
Danger of crushing fingers and needle through stitching as
well as pulling in of parts of clothing.
Keep fingers and hands away from moving parts when
setting the position generator and checking the positions
with switched-on machine.
General:
Stop motors require a position generator, which takes the mechanical setting of
the machine from the main screw and transmits this to the control of the motor.
(Fig. 2)
The correct position of the position generator to the flange is marked with a
spot of paint.
To adjust or to remove, release the two clamping screws (2), Fig. 2. tighten
these firmly prior to commissioning.
All Machines:
The machine requires two needle positions and, depending on the sewing
drive, possibly also a reference position.
Reference position (if required, i.e. sewing drive DC1500-ST220A (Fig. 3)):
The reference position must be set in such a way, that the point of the
needle in the direction of the insertion stitch closes with the outer table
edge.
Fig. 3

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Needle position (with stop outside the seam with pedal position "-2"
(Fig. 4)):
The needle position must be set in such a way, that the distance between
the outer table edge in the stitch direction and the tip of the needle is
about 10 mm.
Needle position is position 2 at the sewing drive.
Fig. 4
Needle position (with stop in and outside the seam with pedal position "0" (Fig.
5)): The needle position must be set in such a way, that the distance between
the tip of the needle in the stitch direction and outer table edge is about 4
mm.
Needle position is position 1 at the sewing drive.
Fig. 5

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3.5 Remove outer and inner machine cover and pour in original STROBEL oil
supplied with the machine from above.
To take off the inner cover first pull out the small oil pipe in the oil rising pipe of
the pump.
The soecial STROBEL oil (viscositiy 46 c St) supplied with the machine should
always be used.
First lubrication (Fig. 6 and Fig. 7)
The required oil quantity is 0,5 liter. It is recommended to change the oil after
approx. six month operation.
The oiling points are automatically lubricated, therefore no maintenance
required.
Fig. 6

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When remounting the inner cover make sure that the lower part of the oil pipe is
pushed into the oil rising pipe of the pump. Otherwise the automatic lubrication
does not work and the machine will be heavily damaged through blocking of the
shafts in the bearings, etc.
Therefore follow the instructions carefully and, after filling the machine with new
oil, operate the machine for a short while and control the working of the
automatic lubrication through the oil inspection glass in the outer cover.
Fig. 7

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4
4.1
Instructions for use
The needle size to be used depends on the material to be sewn and on the
thread respectively. Needle type to be used is 459R.
Needles and threads
(see chart, point “2.4 Technical Data”)
When joining fused parts it may happen that the needle eye conglutinates,
which may affect the loop formation.
Thicker and harder material requires thicker needles.
Guaranteed remark!
This machine has been set and sewn off with genuine
Strobel needles.
No guarantee can be granted if the settings are modified
for using different needle types.
4.2
Inserting the needle (Fig. 8)
ATTENTION!
Switch off machine electrically and confirm that the
machine is really in standstill position by operating the
treadle for the motor control before changing the needle.
Otherwise danger of finger bruises and needle
throughstitches.
Introduce the needle with is horizontal groove pointing downwards, push it to
the rear until it strikes against needle stop 134.0205 (Fig. 8). Then the needle is
clamped by means of screw 171.0406 (Fig. 9).

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4.3
Threading and thread course (Fig. 1 and Fig. 8)
ATTENTION!
Switch off machine electrically and confirm that the
machine is really in standstill position by operating the
treadle for the motor control before changing the needle.
Otherwise danger of finger bruises and needle
throughstitches.
After putting the bobbin on the supporting bolt of the reel stand, the thread is
guided through the eye of thread guiding arm. (Fig. 1)
Further pass it through thread guide 184.0078 (depending on thread and
material through 1 to 3 holes) and thread tension discs 184.0049 to thread
guide 184.0161 and through thread eye 184.0125.
Fig. 8
Fig. 9