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Instruction Manual
and Parts List
Ultra High Speed Overedge
and Safety Stitch Machine
131M-04 131M-04
131M-04 / KS 131M-04 / KS
132M-015 132M-015
321D 321K
134M-04 134M-04
241M-24 241M-24
241M-24 / KS 241M-24 / KS
244M-24 244M-24
251M-35 251M-35
251M-35 / KH 251M-35 / KH
251M-55 251M-55
251M-55 / KH 251M-55 / KH
251M-56 251M-56
251H-56 / KH 251H-56 / KH
® Singer is a registered trademark of The Singer Company Limited or its affiliated companies.
© 2010 Copyright The Singer Company Limited
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Contents 1 Safety Instructions 1 1.1 Important Safety Instructions 1 1.2 For Safe Operation 2 2 Product Description and Machine Specification 3 2.1 Product Description 3 2.2 Machine Specification 4 2.3 Motor, Motor Pulley and V-Belt Specifications 5 3 Mounting and Adjustment Instructions 6 3.1 Table Cut-Out Diagram 6 3.2 Machine Installation 7 3.3 Lubrication and Oil Drainage 9 3.4 Fill Silicon Oil to Reservoir 10 3.5 Needle Attachment (or Replacement) 10 3.6 Replacing Upper and Lower Knife 11 3.7
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Contents 6 Parts list 21 6.1 Machine Bed Frame Components 22 6.2 Machine Cover Components (1) 24 6.3 Machine Cover Components (2) 26 6.4 Crank Shaft Drive Components 28 6.5 Thread Tension Components 30 6.6 Thread Guide and Thread Take-up Components (1) 32 6.7 Thread Guide and Thread Take-up Components (2) 34 6.8 Thread Guide and Thread Take-up Components (3) 36 6.9 Needle Bar Components (1) 38 6.10 Needle Bar Components (2) 40 6.11 Needle Plate and Needle Guard Components 42 6.12 Upper Looper Co
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Safety Instructions • Before running the machine, make • Maintenance and repair on elec- sure all relevant safety specifica- tric equipment should only be 1.1 tions are adequate to specifica- made by qualified personnel. If Important Safety tions and technical standards in any electric device is damaged, your country. the machine should be immedi- Instructions ately stopped. • The machine should not be run Important without its safety devices. • Before starting the machine in full running, a test m
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• To avoid the risk of electric shock, • If you machine is equipped with do not open the motor wiring box a servomotor, it does not make 1.2 and do not touch the components noises while being driven.To avoid For Safe assembled inside the wiring box. a possible accident caused by an Operation unexpected start, be sure the ma- • To avoid injuries do not run the chine is turned off. machine without the belt cover or in case any other safety device is • To avoid electrical shock, do not removed. run
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Product Description and Machine Specification Ultra high speed overedge and safety stitch machines 2.1 Product Description Ultra High Speed Overedge and Safety Stitch Machine | Instruction Manual and Parts List 3
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2.2 Machine Specification Table 1 – Machine Specification Ultra High Speed Overedge and Safety Stitch Machine | Instruction Manual and Parts List 4 Needle Gauge Overedge Bight Stitch Length Presser Foot Lift Singer Speed Singer Model Differential Rate Application [mm] [mm] [mm] [mm] Needle Cat [spm] 321D-131M-04 4 6120-06 75/11 8500 Three-thread overlock machine Three-thread overlock machine with vertical chain 321D-131M-04 / KS 4 6120-06 75/11 8500 cutter and AFL device 13 - Three-thread handkerc
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2.3.1 For 321D series 2.3 ½ HP 2-pole clutch motor Motor, Motor pulley diameter Motor Pulley M type v-belt and V-Belt Table 2 Specifications Motor Pulley Diameter [mm] Machine Speed [spm] 50Hz 60Hz 5,500 110 90 6,000 115 95 6,500 130 105 7,000 140 115 7,500 150 125 2.3.2 For 321K series Direct drive servo motor and control system. Ultra High Speed Overedge and Safety Stitch Machine | Instruction Manual and Parts List 5
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R R1 16 6 R R2 24 4 Setup and Adjustment Instructions 3 3.1 Table Cut-Out Diagram 65 2 22 25 5 1 14 41 1 25 25 21 210 0 11 115 5 18 185 5 9 95 5 50 50 3 32 2 1. 1.5 5 47 47 40 40 11 117 7..9 9559 97 7..3 31 1 3 3 1 11 18 8. .5 5 13 13881 19 90 0 55 550 0 Figure 1 Ultra High Speed Overedge and Safety Stitch Machine | Instruction Manual and Parts List 6 R R25 25 R2 R24 4 20 6 60 0 R R2 25 5 1 10 06 65 5 6 62 25 5 4 47 75 5 3 31 10 0 65 40 40 29 295 5 1 15 55 5 B B B B 4 45 5 4 48 8 2 25 50 0 A A A
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Install the machine support compo- top surface and the table top is nents and the cloth waste chute as around 100 mm. For fully- 3.2 indicated in Figure 2. In case of submerged assembly, the distance Machine semi-submerged assembly, the is around 5.0 mm. Installation distance between the needle plate 3 2 12 1 6 9 4 10 5 7 8 11 Figure 2 Ultra High Speed Overedge and Safety Stitch Machine | Instruction Manual and Parts List 7
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Mount the machine head over the Adjust the tension of the v-belt so machine support plate. that it can be about 20 mm bent 3.2 inward when you press the middle Connect the machine handwheel to Machine of it and make sure the motor turn- the clutch motor with the v-belt (for Installation ing direction is clockwise, referred 321D only) to the Figure 3.(for 321D only) 2cm Figure 3 Set the pedal of the clutch motor to Install the thread stand referred to the left side and the pedal of the the
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Remove the rubber plug and fill the When using the machine for the lubricant oil (Singer Oil) until the first time, or a machine that has not 3.3 indicator of the oil level between 'L' been used for some time, oil the Lubrication and 'H' lines of the oil level sight needle bar top, the guides and window. After that put back the looper before running it. and Oil rubber plug. Drainage Important As this is a ultra high speed machine, DO NOT run the machine before oiling and assuming the dir
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When sewing in ultra high speed, breakage and fabric damage. As fill the device with silicon oil in show on Figure 8. 3.4 order to prevent needle thread Fill Silicon Oil to Reservoir Figure 8 needle). Use only Singer’s Cat. 6120 needles Insert the needle with its long 3.5 Loosen screw ‘1’ as indicated on groove facing towards you and Figure 9 & 10 with the Allen key Needle push it up until the bar end.. wrench in the accessory box and Attachment insert the needle (or remove the old Tight
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Replacing the upper knife ‘1’. Make sure the upper and lower knives mate positively. Then tighten 3.6 1. Loosen screw ‘1’. Move lower screw ‘1’. knife holder ‘2’ to the extreme left Replacing 4. Place a thread between the upper position. Tighten screw ‘1’ temporar- Upper and and lower knives. Check the cutting by ily. Lower Knife turning the handwheel. 2. Remove screw ‘3’ and then upper 8 knife ‘4’. 3 To install a new upper knife, turn 7 4 the handwheel until the upper knife hol
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Important 3.7 Refer to the sewing type you need for correct threading. Machine Any incorrect threading may cause thread brake, uneven stitches or skip stitches. Threading 3.7.1 1 Easy Open three covers. Move the presser foot aside. Threading Method Knot the preset thread and the thread being used together to thread the machine. 2 Needle thread Trim the knots off neatly before passing through the eye of the needle to rethread. 3 Make sure the machine is threaded correctly by referring to the t
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The following adjustments are related to Figure 16 &17. Tension Nut 1: controls the needle thread or the left thread in 3.8 case of two needles. Thread Tension Tension Nut 2: controls the thread in the right needle. Adjustment Tension Nut 3: controls the thread in the lower looper. Tension Nut 4: controls the thread in the lower looper. Important Tension Nut 5: controls the thread of the safety stitch. The thread tension should be adjusted 3 according to the 3 3 3 typ
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Loosen adjusting nut ‘1’ of Figure should be as light as possible to be 18 and turn adjusting bar ‘2’ to sufficient to obtain the proper stitch 3.9 adjust the presser foot pressure.It formation. Presser foot pressure 2 Heavy 1 Light Figure 18 The differential feed ratio is the at sewing. Otherwise the fabric will ratio of movements between the be shrunk. 3.10 main feed dog and differential feed Loosen the adjusting nut 1 and turn Adjusting the dog. When the movement of main the adjusting nu
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Press button to the end and keep it pressed as shown on Figure 20. 3.11 Turn the handwheel until we have Stitch Length the desired stitch length. It is shown Adjustment on the handwheel scale. Important The stitch length Aligning Mark adjustment is made according Coarse to the sewing fabric, differential feed ration and Fine other factors. Handwheel Push Button Figure 20 Ultra High Speed Overedge and Safety Stitch Machine | Instruction Manual and Parts List 15
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3,4 Thread 5 Thread 3.12 Parts Relation (e) (c) and Timing (b) (d) Top surface of the (a) (a) needle plate Figure 21 Figure 22 Figure 23 Top surface of the (g) needle plate (h) Figure 25 Top surface of the (f) needle plate Figure 24 Figure 27 Figure 26 Upper looper Feed dog Lower looper Chain looper Upper looper Height of Upper looper Height of Height of Model left limit left limit holder left Upper looper Height of feed needle left limit upper looper auxiliary feed Feed 321D & 321K position p
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Maintenance 4 Clean the machine periodically with a soft and dry cloth to remove 4.1 the excess of dust on the machine Machine Head head. Do not use any kind of lacquer thinner to wipe the surface. Cleaning Figure 28 When Machine is running, oil will be sprayed into the oil window. If OK! (Operating) 4.2 no oil sprayed, please check oil Oil Change level (see topic 3.3) and Filter If the machine was idle for a long Cleaning time, oil the top of the needle holder, guides and looper guides
