Lockstitch comparison
JACK A3C vs JACK A6F-E: which lockstitch machine should you buy?
A side-by-side look at two lockstitch machines from our catalog: the specifications each one lists, where they differ, and which kind of production each suits. Both are used for shirts, wovens, garments.
JACK A3C
Computerized single-needle lockstitch machine with auto thread trimmer, from Jack’s A-series — a step up from the A2C with Jack’s newer intelligent control system.
JACK A6F-E
Digital needle-feed computerized lockstitch with a sealed oil pan and a large 300mm sewing space — feeds smoothly with no short thread tail.
Key differences
- JACK A3C lists the higher top speed: 5000 s.p.m. against 4000 s.p.m.
- JACK A3C lists an automatic thread trimmer; JACK A6F-E does not list one.
- Series: JACK A3C — Lockstitch (A-series); JACK A6F-E — Lockstitch, needle feed.
- Needle: JACK A3C — DBx1, 11-18#; JACK A6F-E — DBx1, 11-18# / DPx5, 18-21#.
- Best for: JACK A3C — General garment stitching, production lines; JACK A6F-E — Shirts, suits, pants, down jackets.
- Availability: JACK A3C — Order on request; JACK A6F-E — Order on request. Call to confirm today's stock.
Specifications side by side
| Specification | JACK A3C | JACK A6F-E |
|---|---|---|
| Series | Lockstitch (A-series) | Lockstitch, needle feed |
| Needle | DBx1, 11-18# | DBx1, 11-18# / DPx5, 18-21# |
| Number of threads | 2 | — |
| Max stitch length | 5mm | — |
| Presser foot lift (hand/auto) | 13mm / 6mm | — |
| Max sewing speed | 5000 s.p.m. | Up to 4000 s.p.m. |
| Motor | Direct-drive integrated servo motor | — |
| Controls | Intelligent operation panel, one-key reset | — |
| Feed | Computerized, auto-trimmer, auto backtack, auto foot lift | — |
| Best for | General garment stitching, production lines | Shirts, suits, pants, down jackets |
| Availability | Order on request | Order on request |
| Sewing space | — | 300mm, large operating area |
| Lubrication | — | Sealed oil pan, no oil stains |
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 A3C if…
Computerized single-needle lockstitch machine with auto thread trimmer, from Jack’s A-series — a step up from the A2C with Jack’s newer intelligent control system.
- One-key reset panel
- Auto trim, backtack & foot lift
Choose the JACK A6F-E if…
Digital needle-feed computerized lockstitch with a sealed oil pan and a large 300mm sewing space — feeds smoothly with no short thread tail.
- 300mm sewing space
- Sealed, stain-free oil pan
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 A3C and the JACK A6F-E?
JACK A3C lists the higher top speed: 5000 s.p.m. against 4000 s.p.m. JACK A3C lists an automatic thread trimmer; JACK A6F-E does not list one. Series: JACK A3C — Lockstitch (A-series); JACK A6F-E — Lockstitch, needle feed.
Which is better, the JACK A3C or the JACK A6F-E?
It depends on your fabric, operation and daily volume. The JACK A3C is described as: Computerized single-needle lockstitch machine with auto thread trimmer, from Jack’s A-series — a step up from the A2C with Jack’s newer intelligent control system. The JACK A6F-E is described as: Digital needle-feed computerized lockstitch with a sealed oil pan and a large 300mm sewing space — feeds smoothly with no short thread tail.
What is the price of the JACK A3C and the JACK A6F-E?
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.