Overlock comparison
JACK JK-797 vs SINGER S 8150: which overlock machine should you buy?
A side-by-side look at two overlock machines from our catalog: the specifications each one lists, where they differ, and which kind of production each suits. Both are used for knitwear, wovens, garments.

JACK JK-797
Small cylinder-bed, super-fast overlock with variable top feed — a compact bed for flexible, no-dislocation sewing on curved seams.

SINGER S 8150
SINGER's S 8150 is a direct-drive five-thread overlock machine, sharing the S 8140's power-saving direct-drive motor, automatic lubrication and adjustable differential feed with an extra thread for safety-stitch style seams.
Key differences
- The catalog lists different roles for the two: compare the "best for" notes below and tell us your fabric and volume.
Specifications side by side
| Specification | JACK JK-797 | SINGER S 8150 |
|---|---|---|
| Series | Overlock, small-arm | — |
| Needle | DCx27, 9#–11# | — |
| Max sewing speed | Up to 7000 s.p.m. | — |
| Best for | T-shirts, underwear, jeans, mid-to-high-level clothing | — |
| Availability | Order on request | — |
| Threads | — | 5-thread overlock |
| Motor | — | Direct drive, up to 70% power saving |
Highlighted rows differ. A dash means the catalog does not list that specification for the machine; ask us and we will confirm it.
Which one fits your work?
Choose the JACK JK-797 if…
Small cylinder-bed, super-fast overlock with variable top feed — a compact bed for flexible, no-dislocation sewing on curved seams.
- Compact small-arm bed
- Runs up to 7000 s.p.m.
Choose the SINGER S 8150 if…
SINGER's S 8150 is a direct-drive five-thread overlock machine, sharing the S 8140's power-saving direct-drive motor, automatic lubrication and adjustable differential feed with an extra thread for safety-stitch style seams.
Swami Enterprises is an authorized JACK dealer and importer. Swami Enterprises stocks SINGER machines as a stocking partner. Bring your own fabric to the Chanakya Place showroom and sew on both before you decide.
Questions buyers ask
What is the difference between the JACK JK-797 and the SINGER S 8150?
The catalog lists different roles for the two: compare the "best for" notes below and tell us your fabric and volume.
Which is better, the JACK JK-797 or the SINGER S 8150?
It depends on your fabric, operation and daily volume. The JACK JK-797 is described as: Small cylinder-bed, super-fast overlock with variable top feed — a compact bed for flexible, no-dislocation sewing on curved seams. The SINGER S 8150 is described as: SINGER's S 8150 is a direct-drive five-thread overlock machine, sharing the S 8140's power-saving direct-drive motor, automatic lubrication and adjustable differential feed with an extra thread for safety-stitch style seams.
What is the price of the JACK JK-797 and the SINGER S 8150?
Prices depend on the model, quantity and the day. Call +91 99713 36656 or request a quote for today's price on either machine.
Can I see both machines before buying?
Yes. Visit the showroom at Chanakya Place, New Delhi. Call +91 99713 36656 first so the team can confirm which models are on display and in stock.
Not sure which to pick?
Tell us your fabric, operation and daily volume. A specialist will recommend one, with today's price.