Overlock comparison
JACK JK-797 vs JACK C3c: 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.
JACK C3c
High-speed overlock machine with a servo-assisted presser-foot shear, running up to 5500 s.p.m., available in 3-, 4-, 5- and 6-thread configurations for different seam needs.
Key differences
- JACK JK-797 lists the higher top speed: 7000 s.p.m. against 5500 s.p.m.
- Needle: JACK JK-797 — DCx27, 9#–11#; JACK C3c — #11 or #14 depending on configuration.
Specifications side by side
| Specification | JACK JK-797 | JACK C3c |
|---|---|---|
| Series | Overlock, small-arm | — |
| Needle | DCx27, 9#–11# | #11 or #14 depending on configuration |
| Max sewing speed | Up to 7000 s.p.m. | 5500 s.p.m. |
| Best for | T-shirts, underwear, jeans, mid-to-high-level clothing | — |
| Availability | Order on request | — |
| Configurations | — | C3c-3-02/233 (3-thread) up to C3c-6-03/333 (6-thread) |
| Differential ratio | — | 0.7-2 |
| Presser foot lift | — | 6.5mm |
| Dimensions | — | 520 x 360 x 510mm |
| Weight | — | 27.32/34.65kg |
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 JACK C3c if…
High-speed overlock machine with a servo-assisted presser-foot shear, running up to 5500 s.p.m., available in 3-, 4-, 5- and 6-thread configurations for different seam needs.
- Servo-assisted shear
- Smooth stitches
- Multiple thread options
Swami Enterprises is an authorized JACK dealer and importer. 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 JACK C3c?
JACK JK-797 lists the higher top speed: 7000 s.p.m. against 5500 s.p.m. Needle: JACK JK-797 — DCx27, 9#–11#; JACK C3c — #11 or #14 depending on configuration.
Which is better, the JACK JK-797 or the JACK C3c?
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 JACK C3c is described as: High-speed overlock machine with a servo-assisted presser-foot shear, running up to 5500 s.p.m., available in 3-, 4-, 5- and 6-thread configurations for different seam needs.
What is the price of the JACK JK-797 and the JACK C3c?
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.