- Lockstitch uses two threads locked together, creating a strong, secure seam that resists unraveling.
- Chainstitch uses a single looped thread, which is faster to sew but can unravel if the thread breaks.
- Lockstitch is the standard for garment construction, tailoring, and most general-purpose stitching.
- Chainstitch is commonly used in high-speed production settings like bag closing, sacking, and basting.
- Juki’s industrial lockstitch range is the most widely used option for general tailoring and garment work.
Juki Sewing Machine Price List
Understanding How Each Stitch Is Formed
Lockstitch
A lockstitch machine uses two separate threads — one from the needle (top thread) and one from the bobbin (bottom thread) — that interlock within the fabric layers. This interlocking creates a stitch that’s identical on both the top and bottom of the fabric, and critically, if the thread breaks or is cut at one point, the surrounding stitches don’t unravel. This is why lockstitch is the standard for garments that need to hold up over years of wear and washing.
Chainstitch
A chainstitch machine uses a single thread (or in some machines, one needle thread looped with a looper thread) that forms a chain-like loop pattern rather than an interlock. It’s mechanically simpler and generally faster to sew, but the trade-off is durability — if the thread breaks or a stitch is pulled at the end, the entire seam can unravel like a pulled knit thread, since there’s no locking mechanism holding each stitch independently.
Where Lockstitch Is the Better Choice
General Garment Construction
Shirts, trousers, dresses, and most standard tailoring work rely on lockstitch for its durability and resistance to unraveling — critical for garments that will be worn, washed, and stressed repeatedly over time.
Tailoring Shops
For a tailoring business handling a mix of repair work, alterations, and garment construction, lockstitch is the practical default, since it holds up reliably across almost every type of daily tailoring task.
Denim and Heavier Fabric
Given its strength and resistance to unraveling under stress, lockstitch is generally the better choice for denim, leather, and other fabric under regular tension or wear.
Our juki sewing machine price list range covers Juki’s well-regarded industrial lockstitch machines — the standard choice for tailoring shops and garment units needing dependable, long-lasting seams across a wide range of fabric types.
Where Chainstitch Is the Better Choice
High-Speed Production Environments
Chainstitch machines are generally faster to operate, making them useful in settings prioritising speed over ultimate seam durability — bag closing, sack stitching, and certain basting or temporary-hold applications.
Basting and Temporary Stitching
Since chainstitch can be pulled out cleanly (the chain unravels as a feature, not a flaw, in this context), it’s sometimes deliberately used for temporary stitches meant to be removed later — like basting stitches in tailoring before final construction.
Specific Industrial Applications
Certain production settings — like sack or bag closing — actually benefit from chainstitch’s tendency to unravel with a single pull, since it allows for quick, controlled opening of a sealed bag without needing to cut the seam.
Which Should a Tailoring Business Choose?
For the vast majority of general tailoring and garment construction work in Chennai — shirts, trousers, blouses, alterations, denim work — lockstitch is the standard and recommended choice. It’s more durable, doesn’t risk unraveling from a single pulled thread, and is the industry-standard stitch type taught and expected across most tailoring training and garment production.
Chainstitch machines are more of a specialised addition — useful if your business specifically involves bag/sack closing or high-speed basting work, but not typically a replacement for a lockstitch machine in a general tailoring setup.
Cost and Availability Considerations
Lockstitch industrial machines, given their widespread use, are more readily available across brands (Juki, Jack, Gemsy) with a broad range of price points to suit different business sizes. Chainstitch machines are more specialised and typically sourced for specific production needs rather than general tailoring use, so availability and brand choice tends to be narrower.
A Quick Comparison
| Lockstitch | Chainstitch | |
|---|---|---|
| Thread count | Two (needle + bobbin) | One or two, looped |
| Seam strength | High, resists unraveling | Lower, can unravel if cut |
| Speed | Standard | Generally faster |
| Best use | General garment construction, tailoring | Bag closing, basting, high-speed production |
| Common brands | Juki, Jack, Gemsy | Specialised industrial suppliers |
Making the Right Choice for Your Business
If you’re setting up or expanding a tailoring shop, garment construction unit, or general stitching business, a lockstitch machine should be your primary investment — it covers the overwhelming majority of stitching needs reliably. Only consider adding a chainstitch machine if your specific production involves bag/sack work or a genuine need for fast, removable basting stitches at scale.
Our team can help you choose the right lockstitch configuration — speed, motor type, and table setup — based on your specific production volume and fabric type.
Visit VS Sewing Machines, No. 77B, Venkatesaperumal 1st Street, Madipakkam, Chennai – 600091, or call +91 98843 04169 to explore our Juki lockstitch range in person.
FAQs
- Which is stronger, lockstitch or chainstitch?
Lockstitch, since its interlocked thread structure resists unraveling if cut or broken. - Is chainstitch used in regular garment tailoring?
Rarely — it’s more common in bag closing, basting, or specific high-speed production settings. - Why does chainstitch unravel easily?
Because it’s formed from a single looped thread without an interlocking mechanism holding each stitch independently. - Which stitch type is best for denim?
Lockstitch, given its strength and resistance to unraveling under stress. - Do most Juki machines use lockstitch?
Yes, Juki’s industrial range is predominantly lockstitch, the standard for general tailoring and garment work.
