Principles of Lock and Chain Stitch Formation and Its Differences

Principles of Lock and Chain Stitch Formation

Here in this article, you will learn Principles of Lock and Chain Stitch Formation and Its Differences with phase wise details.

The Principles of Lock Stitch Formation

  • Lock stitch m/c requires two groups of threads to form a stitch.
  • A needle thread that feeds from the top & a lower thread from a bobbin.
  • A rotary hook catches the needle thread loop as it passes around the bobbin &
    interlocks the two threads.
  • The lock stitch m/c can be distinguished by the winding device provided for the bottom
    thread.
Principles of Lock and Chain Stitch Formation and Its Differences

Phases of Lock Stitch Formation

Phase-1: The needle is inserted into the material

Principles of Lock Stitch Formation Phase 1

Phase-2: As the needle moves up-wards from its lowest position the needle thread forms a loop which is caught by the point of the hook.

Principles of Lock Stitch Formation Phase 2

Phase-3: The hook enlarges the needle thread loop.

Principles of Lock Stitch Formation phase 3

Phase-4:  In this phase, the thread loop is guided around the bottom thread of the spool.

Principles of Lock Stitch Formation phase 4

Phase-5: The beginnings of interlacing will be done in this phase.

Principles of Lock Stitch Formation phase 5

Principles of Chain Stitch Formation

Phase-1:

  • The needle is entered through the fabric with the thread & reaches to its lowest position.
  • Needle contain old loop around its blade
  • When needle moves on upward there will be the formation of a new loop.
Principles of Chain Stitch Formation Phase 1

Phase-2:

  • The new loop is caught by the looper (above the needle eye below the old loop)
  • The needle moves upward
  • The old loop is cast off from the needle blade and slides on the base of the new loop, which is still held by the looper.
  • Between the new and old loop, an interlacement is to be formed under the fabric
  • In that time fabric is also moved one stitch forward due to the feed dog mechanism.
Principles of Chain Stitch Formation Phase 2

Phase-3:

  • The looper enlarges the new loop so that when needle again entered through the fabric it passes through the loop.
  • Then the looper leaves the loop, which held on the needle blade.
  • This loop now becomes the old loop.
Principles of Chain Stitch Formation Phase 3

Difference Between Chain Stitch and Lock Stitch

Chain Stitch Lock Stitch
Stitches are formed by two or m regroups of threads, needle thread & looper thread.There will be at least two types of threads, one is needle thread and other is bobbin thread.
The Threads are bound together by interlacing and interloping.The Threads are only bound by interlacing.
Looks like lock stitch at the top side and double chain at under.The visibility look of a lock stitch is the same on both sides of the fabric.
Strength is higher than look stitch. Lower strength than chain stitch.
Possibilities of seam pucker formation are less compare to lock stitch. Possibilities of seam pucker are more than chain stitch.
Extensibilities is 30%Same, sometimes less than chain stitch.
No need of back tacking at finishing end, but secured by one (cm) thread at finishing the end.Stitches are secured by back tacking at the starting and finishing the end.
m/c speed 8000 spm (stitch per min)m/c speed 6000 spm.
Thread consumption is high. Thread consumption is less.
Difference Between Chain Stitch and Lock Stitch

Amarta Sarkar
B.Sc. in Textile Engineering (Major in Apparel Manufacturing Technology) (BUBT)
EMBA (Studying) (JnU)
Email: [email protected]

Types of Stitch Used in Garments Sewing

What is Stitch? A stitch is a Loops or loops of one or more threads when bound with each other, either by interlacing, interloping or intra-looping or combination of those when sewing fabric and each unit of such configuration is considered as a stitch. In this article, we will share details of different types of stitch used in garments sewing.

Terminology Related with Different Types of Stitch in Garments

Three-term related to stitch

  1. Interlacing
  2. Interlooping
  3. Intralooping

Interlacing

During stitching when one loop of one thread passes over another loop of another tread is called interlacing.

Interlacing

Interlooping

During stitching when a loop of one thread passes through the loop of another thread is called interloping.

Interlooping

Intralooping

When a loop one thread passes through the loop of the same tread during sewing is called intra-looping.

Intralooping

Types of Stitch Used in Garments Sewing

There are about 70 types of stitches are available and among them, 18-20 types of stitches are widely used in garments industries, also 2 to 3 types of stitches are used in making of garments for tailoring and domestic purpose.
British standard 3870: part1:1991 have been classified according to ISO 4915:1991 into six basic types of stitch.

  1. Stitch class 100: Chain stitch
  2. Stitch class 200: Hand stitch
  3. Stitch class 300: Lock stitch
  4. Stitch class 500: Overedge stitch
  5. Stitch class 600: Covering chain stitch

Stitch Class 100: Chain Stitch

  • Stitches are formed by intra-looping
  • Each loop is interconnected with the same thread
  • There is no lower thread
  • The needle carries the thread through the fabric and looper holds the thread to enter as it descends for the next stitch
  • Security of stitch is very poor, in case of breakage of one stitch, it unravels very easily
  • One or more needle thread is used for stitch formation
  • From opposite sides, it looks different
Stitch Type 101

Application of Chain Stitch

  • Temporary stitching (e.g. basting) or for blind stitching
  • Uses for buttonholing, button attaching, hemming

Stitch Class 200: Hand Stitch

  • Originally made by hand, now can be formed by machine
  • Looks like domestic hand stitch
  • It is produced from a single thread passed from one side of the material to the other side with each successive penetration of the needle
  • This type of stitch is formed by a special type of needle and sewing machine
  • The needle is double pointed with Centre eyed
Stitch Class 209 (Hand Stitch)

Uses Hand Stitch

  • The lapel of jacket, coat and expensive clothes

Lapel

A stripe of cloth is part of the front of the jacket or coat

Lapel

Disadvantages Hand Stitch

  • Time-consuming process
  • Higher cost
  • Speed of sewing m\c is very slow
  • Rare in use

Stitch Class 300: Lock Stitch

  • Lock stitch requires at least two threads to form a stitch, a needle thread that feeds from the top & a lower thread that feeds from the bobbin.
  • Needle threads are passed through the fabric & are interlaced by the bobbin threads.
  • A rotary hook catches the needle threads loop as it passes around the bobbin & interlocks the two threads.
  • The appearance of the lock stitch is similar in both sides of the fabric; it is a special feature.
  • Fine yarn is preferable for this type of stitching.
  • Stitches are secured and security of stitches can be increased by back tacking at starting and finishing ends.
  • Abrasion resistance of lock stitch is better because the stitches are embedded in the fabric.
Stitch Class 301

Uses of Lock Stitch

  • Joining of facing, collar, pocket & other parts
  • Especially for topstitching
  • Both for domestic and industrial purposes

Stitch Class 400: Multi Thread Chain Stitch

  • Multi-thread chain stitch requires one or more needle that forms loops as they pass through the fabric and interloop with the looper thread on the underside
  • Threads are bound tighter by interlacing & inter-looping
  • It looks lock stitch at the top side & double chain at the underside
  • Looper thread is supplied from cone
  • Need not back tacking at the starting & finishing ends.
Stitch Class 401

Multi-Thread Chain Types of Stitch Used in Garments

  • Used for long length sewing, heavy fabric sewing such as denim, attaching lace, elastic.

Stitch Class 500: Over Edge Stitch

Stitch Type 504
  • Stitches are formed by two or more group of threads
  • Formed from one or two needle threads with a looper thread
  • At least one group of threads pass around the edge of the material
  • Width of the fabric may vary from 3-5 mm
  • Prevents the fabric from fraying
  • They have high elasticity
  • They cannot be unraveled easily
Types of Stitch used in garments industry

Uses of Over Edge Types of Stitch in Garments

  • Widely used for knit fabric
  • Used for decorative purpose
  • Joining of the side seam, armhole of a shirt
  • Inseam, out-seam of a pant

Stitch Class 600: Covering Chain Stitch

  • Stitches are generally formed with three groups of threads
  • One thread is needle thread, other is the looper thread & another is the top cover threads
  • Stitches of this class are the most complex of type it may need up to 9 threads
  • Covering chain stitches are often called flat lock or flat seam stitches.
Types of Stitch used in Garments Sewing

Uses of Covering Chain Stitch Types of Stitch in Garments

  • Mainly used for knitted apparels
  • Attaching lace, elastic, etc.
  • Decorative purpose in apparels

Overall Types of Stitch in Garments (Basic Shirt)

Types of Stitch Used in Garments Sewing

Written by
Amarta Sarkar
B.Sc. in Textile Engineering (Major in Apparel Manufacturing Technology) (BUBT)
EMBA (studying) (JnU).
Email: [email protected]

Sewing Machine Operator Recruitment, Grading and Skill Matrix

Sewing Machine Operator Recruitment

Sewing operator recruitment is a tough job in the apparel industry. To recruit the best quality and efficient operator, sewing operators have to stitch one, two or three bundle garments with good seam quality by a certain time, recruiter checks his/ her production capacity and product quality and can be seen how many operations an operator can do, these few criteria set his grading. Then, Grade, wise operator salary is fixed by sewing operator recruiter, garments manufacturer have own operator grade wise salary standard. Here in this article, you will have details idea of Sewing Machine Operator Recruitment, Grading and Skill Matrix.

Sewing Machine Operator Recruitment, Grading and Skill Matrix in Garments

Related articles you may like:

Sewing Operator Grading

Lots of factors have to consider when doing operator grading. First, we have to know what type of operation operator does, then the operator’s production efficiency and many others factor. Here you can see below information on how to grade sewing operator.

Sewing Operator Grading

SN. Operation Name M/C Type
“A” Grade Category
1 Pocket Attach SN
2 Placket Attach SN
3 Collar Attach SN
4 Collar Close SN
5 Zipper Join SN
6 Zipper Top Stitch SN
7 Placket Box Make SN
8 Neck Join OL
9 Sleeve Join OL
10 Side Seam OL
11 Bottom Join OL
12 Nk Piping  FL
13 Bottom Hem FL
14 Waist Band T /S Kansai
“B” Grade Category
1 Placket 1/16 Top Stitch SN
2 Bk Nk T/S (LBL T/S) SN
3 Back Rise Join OL
4 Front Rise Join OL
5 Shoulder Join OL
6 Front Nk T/S FL
7 Bk Nk Binding FL
8 Sleeve Hem FL
9 Arm Hole T/S FL
10 Shoulder Join OL
“C” Grade Category
1 Collar Tack SN
2 Side Vent Tack SN
3 Sleeve Inside tack SN
4 Sleeve Out Side Tack SN
5 BTN Hole BH
6 BTN Stitch BS
7 Bar Tack BT

Here,

  • SN – Single needle sewing machine
  • OL  -Overlock sewing machine
  • FL – Flat lock sewing machine
  • BH – Buttonhole sewing machine
  • BS – Button stitch sewing machine
  • BT – Bartack sewing machine

Explanation of Sewing Machine Operator Grading

    • For the each A grade operation giving 10 marks for 100% efficiency level up to a maximum of 8 operations, marks will be multiplying by the efficiency Percentage. (Example: 10X 0.7, if the efficiency level 70%.)
    • For each B grade operation giving 7 marks for 100% efficiency level up to a maximum of 8 operations, marks will be multiplying by the efficiency Percentage. (Example: 7X 0.7, if the efficiency level 70 %.)
  • For each C grade operation giving 5 marks for 100% efficiency level up to a maximum of 8 operations, marks will be multiplying by the efficiency Percentage. (Example: 5 X 0.7, if the efficiency level 70 %.)

General Grading of Sewing Machine Operator

  1. 10 marks will be given if the absenteeism less than 3%
  2. 5 Marks will be given for over one-year service in the factory
  3. 1 to 10 Marks will be given for types in satisfaction level of production management.
  4. To be an ‘A’ grade operators must have the ability to operate 3 different machine
  5. To be a ‘B’ grade operators, must have the ability to operate 3 different machine

Final Grading Based Marks of Sewing Machine Operator

  • 80> GRADE A
  • 70 > 80 GRADE B
  • 60 > 70 GRADE C

Sewing Operator Skills Matrix

Sewing operator skill matrix or summary is a database of operator production capacity of different operation, number of machine and operation with the name he can operate, these process efficiency, salary, date of join. The database makes in Excel (spreadsheet), keeping by IE department in the apparel industry. This database help factory to migrate operator to another operation, to find out best sewing operator easily, to do operator grading easily.

Sewing Machine Operator Recruitment, Grading and Skill Matrix

Sewing Operator Skill Summary List

  1. Number of operation can sew
  2. Number of sewing machine can operate
  3. Production capacity per operation
  4. Sewing efficiency
  5. Servicing period in factory
  6. Seam quality

Sewing Machine Operator Recruitment, Grading and Skill Matrix in Garments pdf

Written by

A.M. Amirul Islam (Washim)
Email: [email protected]

Linkedin: A.M. Amirul Islam

Overlock Sewing Machine Types, Specifications and Technical Adjustment

Overlock Sewing Machine

The overlock machine is different from the lockstitch sewing machine, cut the edge of fabrics and cover two parts of fabrics by stitching. Overlock machine has different types of specification, from 2/3 to 6 threads can be used. Here in this article, we will have detail discussion of Overlock Sewing Machine Types, Specifications and Technical Adjustment.

Overlock Sewing Machine

Overlock Sewing Machine Types, Specifications and Technical Adjustment

Overlock Stitch

Types of Overlock Sewing Machine

An overlock / over edge machine is a high-speed sewing machine. This is the quickest performing machine for giving overedge stitches. Overlock Machines Are available in following Specifications

  1. 2 Thread Overlock machine
  2. 3 Thread Overlock Machine
  3. 4 Thread Overlock Machine
  4. 5 Thread Overlock Machine
  5. 6 Thread Overlock Machine

Overlock Sewing Machine Types, Specifications and Technical Adjustment

The Relationship between Overlock Machine and Number of Thread Used

Serial No. Machine Name No. Of Threads use Total threads use
Needle Looper
1 2 Thread Overlock Machine 1 1 2
2 3 Thread Overlock Machine 1 2 3
3 4 Thread Overlock Machine 2 2 4
4 5 Thread Overlock Machine 2 3 5
5 6 Thread Overlock Machine 3 3 6

Features of Overlock Sewing Machine

  1. Maximum Machine speed 6500 SPM (vary operation wise)
  2. Stitch can be made using 2,3,4,5 or 6 threads, depending on the no. of needles and looper
  3. Stitch length 2 to 4 mm
  4. Stitching type- Overlock stitch
  5. Used feed is Deferential feed
  6. Oil lubrication system- Automatic
  7. Used in Woven, knit; all types of garments

Technical Adjustment of Overlock Machine

Technical adjustments which are to be taught while dealing with OVERLOCK machines are given below. Trainers should keep the following points in mind during the session of OVERLOCK machine

  • First, demonstrate the adjustment then ask trainee to practice on the machine.
  • Use the Instructional manual given by the machinery supplier during Session
  • Make sure, all the trainees are able to understand the Instructional manual.
  • The practice of sewing on a machine is also necessary.

Technical Adjustments Points of Overlock Machine

  1. Basic Machine Practice
  2. Technical Specification
  3. Installation of needle
  4. Needle bar Height adjustment
  5. Needle to lower looper timing
  6. Upper Looper Timing
  7. Chain looper timing (Safety Stitch)
  8. Upper Knife Adjustment
  9. Lower Knife adjustment
  10. Feed Dog Height adjustment
  11. Cam Timing
  12. Thread Adjustment

Overlock Sewing Machine Types, Specifications and Technical Adjustment pdf

Written by

A.M. Amirul Islam (Washim)
Email: [email protected]

Linkedin: A.M. Amirul Islam

48 Sewing Machine Parts and Functions [2019]

Our study found that about 48 Sewing Machine Parts and Functions [2019] you need to know to replace them. Earlier people used to sew by hand but after the industrial revolution mechanical machine was created which is a handheld sewing machine. Because of continuous development now we have automated sewing machines available for home use, commercial use and industrial use. Although basic sewing functions remain the same, the pattern of stitches is different and improved. By using the modern sewing machine, you can put different types of stitch as required. For a good finished product, you need to buy a good quality sewing machine, either you can buy a manual or automated. For personal use, you can buy a handheld sewing machine.

Sewing Machine Parts and Functions

Now with a modern machine, you can not only sew your cloth but also can do embroidery. A good quality thread is required for getting better finishing and sewing strength. Here I will discuss all the different parts of a sewing machine both for the traditional and modern, manual and automatic sewing machine.

Different Parts of Sewing Machine

Choice of Right Brand of Sewing Machine

You may think about what brand you should choose among available sewing machine brands. My suggestion for you first determines for what purpose you are going to purchase the sewing machine. There are many popular sewing machine brands available out there.

  • Brother
  • Juki
  • Janome
  • Singer
  • Zoje
  • Siruba

If it is for home use then the singer machine you can purchase. For industrial garments production Juki and Brother these two brands are highly used all over the world because of its good quality.

Therefore to get long-term service from a sewing machine, you have to take care of it. Regular maintenance and cleaning are necessary. You also need to put lubricants or oil into the required parts. Sewing Machine Parts can be imported from China, Europe or buy from the local market. Needle, bobbin, bobbin case, oil, and lubricants are commonly needed parts and require regular maintenance. Buy a good quality sewing machine to ensure long-lasting service.

Popular Sewing Machine Brands

Top Sewing Machine Brands 2019
Top Sewing Machine in 2019

All Parts of Traditional and Modern Sewing Machine

All parts of the sewing machine with pictures are giving below for your better understanding.

Sewing Machine Parts, All parts of Sewing Machine

List of Parts of a Sewing Machine

  1. Balance Wheel
  2. Bobbin Winder
  3. Face Plate Thumb Screw
  4. Feed Dog
  5. Needle Bar Bushing
  6. Needle Bar Thread Guide
  7. Needle Clamp Thumb Screw
  8. Needle Clamp
  9. Needle
  10. Presser Bar Lifter
  11. Presser Foot Thumb Screw
  12. Presser Foot
  13. Pressure Regulating Thumb Screw
  14. Spoon Pin
  15. Tension Discs
  16. Tension Spring
  17. Thread Guide
  18. Thread Take-Up Lever
  19. Thread Take-Up Spring
  20. Throat Plate
  21. Stitch Indicator Plate
  22. Stitch Regulator
  23. Stitch Regulator Thumb Screw
  24. Bobbin Winder Thread Tension
  25. Bobbin Winder Spool Pin
  26. Needle Plate
  27. Bobbin Case
  28. Bobbin

Different Parts of a Sewing Machine with Functions

Here, we are giving details of 14 common parts of a sewing machine which we found common parts of a singer sewing machine, Juki sewing machine, and another common sewing machine. So that you can know the function and repair and maintenance mechanism and as well as the sourcing of the parts.

Balance Wheel of Sewing Machine

In a traditional handheld sewing machine and a semi-auto sewing machine, you can see that there is a wheel on the top right corner of a sewing machine. Basically, it is used to run the machine manually.

The Needle of Sewing Machine

A needle is a sharp metal, very sharp in nature which has a small hole (eye) in which a thread goes through. Basically, a needle is used for sewing. In a sewing machine, a needle is attached. In a needle, you may find 5 parts. They are a shank, Shaft, Front Groove, Point Scarf, and eye. However, for woven fabric and denim, lather, knit fabric, different types of Needle are used and Needle made of steel coated with chrome or titanium.

Needle

Different Size of Sewing Machine Needle

According to the purpose, Different sizes of a needle are used for different types of fabric.

Different Size of Needle for Different Types of Fabric

Sourcing of Sewing Machine Needles

Sewing machine needle is mainly sourced from China because of a cheap price. So you can also source it locally if the order quantity is less.

Spool Pin of Sewing Machine

Spool pin in a sewing machine is placed vertically or horizontally which actually used for holding the spool of threads and this is a fixed part of a sewing machine.

The Bobbin of Sewing Machine

In a sewing machine bobbin is one of an integral part and it is non-electrical parts of a sewing machine. Bobbins can be found in different electric devices. In a bobbin, threads are wired which is used for sewing. You need to set the required thread into a bobbin. After finishing you have to refill the bobbin to continue the sewing process.

Sourcing of Sewing Machine Bobbin

There are many popular brands of bobbin manufacturer, you can collect bobbin from them. You can source either by importing or if locally available then purchase it locally because it will be cheaper. Different manufacturers of sewing machine bobbins are:

  1. Brother
  2. Juki
  3. Janome
  4. Singer
  5. Boby Lock
  6. Bernina
  7. Consew
  8. Elena
  9. Kenmore
  10. Riccar
  11. Handi Quilter

Bobbin Holder of Sewing Machine

Bobbin holder is used to holding the bobbin into the sewing machine. Bobbin holder also is known as the bobbin case which is one of the key sewing machine parts. Time to time you may need to conduct cleaning and maintenance or change of bobbin case. It is one of the commonly used spare parts of a sewing machine.

Presser Foot of Sewing Machine

presser foot is used in a sewing machine to hold the fabric in the right place on the throat plate so that fabric cannot slip around. Sometimes it may require to change the sewing machine pressure foot if you use your machine for commercial garments production or small household business.

Tension Discs and Tension Spring

The tension discs used to control the thread tension to give proper stitch on the fabric. If there is a problem of tension then you may see that stitch is not placing properly, it may loose or tight. Tension spring is added to control the pressure so that two different fabrics can join together with proper stitch. Tension discs and spring may need to change if it is damaged. Sourcing options are local or source it from China or any other region if you need a large quantity.

Tension Discs and Spring

Remember that you have to clean dust from time to time from the tension discs otherwise, you may find improper stitch.

Face Plate Thumb Screw

The faceplate thumb screw is used for attaching the faceplate of a sewing machine. You may find it a traditional sewing machine but normally this part is not required to replace.

Thread Guide

Thread guide is a small part of a machine that has a hole inside, is responsible for properly guide the threads from the spool pin to the hole of a needle. Thread guide is made of steel or metal.

Throat Plate

Throat plate is placed between pressure foot and bobbin case. This plate also is known as needle plate. It is made of metal and at the time of sewing, pressure foot is placed on top of the throat plate.

Stitch Indicator Plate

Stitch Indicator plate indicates the stitching type where different stitching number is written. This plate is a fixed part of the machine that is not required to change but you should clean the surface of the plate so that the written number is visible.

Stitch Regulator

By using a stitch regulator you can regulate the type of stitch on the fabric. In accordance with your requirements, you can switch into a different stitch or adjust your sewing stitch.

Bobbin Winder

Bobbin winder basically ensures the right direction of the threads from the spool to the bobbin. An automated mechanical process works inside the machine.

Feed Dog

Feed dog helps to feed the fabric to the required direction, either backward or forward using its teeth. It is a metal-based product. Normally it is not a visible part of a machine. But if you look closely into the needle plate then you can see. If the feed dog is damaged then you must need to change it.

Juki Industrial Sewing Machine Parts

Following spare parts may need to source for your machine

  1. Adjusting Lever
  2. Assy Cloth Dust Plate
  3. Balance Thread Guide
  4. Bobbin
  5. Bobbin Case
  6. Bobbin Device Asm
  7. Bobbin Thread Tension Asm
  8. Bushing Lms Middle
  9. Clutch Sleeve Left (Assy)
  10. Clutch Sleeve Right (Assy)
  11. Collar Lifter Lever
  12. Connecting Rod
  13. Crank Rod All Asm
  14. Ctl Pcb Assy (Sc510)
  15. Feed Lifter Rod
  16. Fork Rear Ndl Guard
  17. Front Ndl Guard
  18. Guide Support Asm
  19. Holder Front Ndl Guard
  20. Intermediate Presser A
  21. Lever
  22. Lifter Lever Link Short
  23. Looper Bar
  24. Manifold Valve Assy
  25. Needle Thread Strike Off
  26. Needle Bar Thread Guide H
  27. Needle Bearing (A)
  28. Needle Bearing (B)
  29. Needle Bearing (C)
  30. Needle Bearing (D)
  31. Oil Pump Asm
  32. Oil Seal
  33. Pedal Sensor Asm
  34. Pedal Sensor Unit C Assy
  35. Pre Tension Controller Asm
  36. Pwr Circuit Board A Asm
  37. Rear Needle Guard
  38. Roller Drive Arm
  39. Roller Drive Link
  40. Sapcer 1
  41. Sapcer 2
  42. Screw
  43. Shuttle (H)
  44. Take Up Base
  45. Tension Lever
  46. Tension Post
  47. Thread Tension Assy
  48. Top Cover Gasket

Siruba Sewing Machine Parts

  1. Cam Thread Guide Set
  2. Differential Feed Dog
  3. Double Side Cut Presser Foot C.Set
  4. Eccentric
  5. Looper Thread Take-Up Guide
  6. Lopper Connecting
  7. Lower Looper Holder
  8. Main Feed Dog
  9. Needle Clamp
  10. Needle Thread Takeup
  11. Spring Plate for Pressure Foot(Left)
  12. Presser Foot Spring Plate (Right)
  13. Sewing Head Cover (Left)
  14. Stitch Plate

Maintenance of Sewing Machine

Finally, a machine should be properly maintained to get long-lasting service. If you do not clean and add lubricant properly then you may find a technical problem or not functioning properly. Different defects you may identify and how you can ensure proper maintenance?

  1. First, read the manual provided with the sewing machine and follow the guidelines for setting the machine and starting sewing.
  2. Please clean after using it if there is any dust.
  3. Do not give extra pressure if a thread is stuck in the bobbin case
  4. Use good quality accessories
  5. Regularly put good quality lubricants to the right place

Purchase Sewing Machine Parts Online

In addition to the option of physically going and buying You can purchase sewing machine parts through an online platform which can be easier for your sourcing. Commonly available solutions are:

  1. Amazon
  2. eBay
  3. Stitch Spares
  4. Alibaba
  5. Other Popular online platforms

Please note that, before purchasing check the seller’s background, years of experience and customer feedback. So that you can select the right supplier of your machine parts.

In conclusion, if you think you have any confusion or you want to add value to this article then please let me know.

Written by
Md. Nahian Mahmud Shaikat
Email: [email protected]


What is a Sewing Machine?


A sewing machine is a unique designed machine that is used for stitching different parts of fabric together to make garments products. Sewing machines are used in both the lather and apparel industries. The main functions of the sewing machine are sewing fabric or any other parts of the materials.

Features of Single Needle Lock Stitch Machine

Features of Single Needle Lock Stitch Machine

Single needle lock stitch machine is called a plain needle sewing machine. Single needle lock stitch machine is mostly used as an industrial sewing machine. Modern single needle lockstitch has a thread trimmer which operates at the highest speed of its kind. Lockstitch machine is the most commonly used sewing machine in the apparel industry, especially in woven garments. Here in this article, I am going to share Features of Single Needle Lock Stitch Machine with you for a clear understanding of single needle lock stitch sewing machine.

Types of Lock Stitch Sewing Machine

There are two types of lock stitch sewing machine used in a garments factory.

  1. Single needle lockstitch machine
  2. Double(two) needle lockstitch machine

Single Needle Lock Stitch Machine

Single needle lock stitch machine is stitch by one needle of a machine by lock stitch.

Double Needle Lock Stitch Machine

Double-needle /twin/two needle is a needle with a single shank and two shafts, proceed stitching with the double stitching you will get two parallel rows on the face of the fabric and a zig-zag stitch on the back of the fabric.

You may also love to read:

Parts of Single Needle Lock Stitch Sewing Machine

Different Parts of Single Needle Lock Stitch Sewing Machine

Different Parts of Single Needle Lock Stitch Sewing Machine

  1. Bobbin Winder
  2. Thread wiper device
  3. Lifting lever
  4. Hand swatch A
  5. Hand swatch B
  6. Work Clamp
  7. Knee lifter plate
  8. Power stitch
  9. Oil gauge window
  10. Oil feeding pocket
  11. Machine pulley
  12. Operation panel
  13. Cotton stand
  14. Control box
  15. Power indicator
  16. USB port
  17. Pulley cover
  18. The thread takes up cover
  19. Finger guard

Parts of Single Needle Lock Stitch Sewing Machine

Features of Single Needle Lock Stitch Machine

  1. Two thread need for a machine, one for needle and another one for bobbin
  2. Needle thread set in the upper side of fabric and bobbin thread set in the lower side of the fabric in stitch
  3. Stitching type only lock stitch
  4. Machine speed is 4000-5000 RPM
  5. 1 needle in every machine
  6. Edge cutting, automatic bobbin winding
  7. Less noise, low vibration, no radiation, and environment-friendly
  8. SPI generally 7-9
  9. Sewing Shirts, Jackets, Suits, Over-coats, Bed covers, Curtains, Children’s clothes, Bags, Leather, Wool, Chemical fiber and Canvas.

Features of Single Needle Lock Stitch Machine

Technical Specifications of Lock Stitch Machine

  1. Basic Machine Practice (Loop Exercise)
  2. Technical Specification
  3. Installation of needle
  4. Needle bar Height adjustment
  5. Hook Set Timing
  6. Feed Dog adjustment and alignment
  7. Feed Dog Eccentric cam Adjustment
  8. Pressure foot to the Pressure adjustment

Features of Single Needle Lock Stitch Machine pdf

Written by

A.M. Amirul Islam (Washim)
Email: [email protected]

Linkedin: A.M. Amirul Islam