Lockstitch comparison
JACK A5E-B AMH2 vs JACK F6: 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.

JACK A5E-B AMH2
AI-integrated computerized lockstitch with the largest operating space in its class — automatically adapts to changing fabric thickness mid-seam.

JACK F6
Direct-drive computerized lockstitch machine running up to 5000 s.p.m. on a built-in silent servo motor, with oil-free semi-dry lubrication and a built-in thread-cutting knife for shirts, wovens and uniform work.
Key differences
- Both list the same top speed of 5000 s.p.m.
- JACK A5E-B AMH2 lists an automatic thread trimmer; JACK F6 does not list one.
- Series: JACK A5E-B AMH2 — Lockstitch (A-series), AI-integrated; JACK F6 — Lockstitch, direct drive.
- Needle: JACK A5E-B AMH2 — DBx1, 11-18# / DPx5, 18-21#; JACK F6 — DBx1, 11-18#.
- Availability: JACK A5E-B AMH2 — Order on request; JACK F6 — In stock. Call to confirm today's stock.
Specifications side by side
| Specification | JACK A5E-B AMH2 | JACK F6 |
|---|---|---|
| Series | Lockstitch (A-series), AI-integrated | Lockstitch, direct drive |
| Needle | DBx1, 11-18# / DPx5, 18-21# | DBx1, 11-18# |
| Max sewing speed | Up to 5000 s.p.m. | 5000 s.p.m. |
| Operating space | 305 × 130mm — largest in its class | — |
| Feed | Auto-trimmer, auto backtack, auto foot lift | — |
| Best for | Shirts, suits, pants, down jackets | — |
| Availability | Order on request | In stock |
| Number of threads | — | 2 |
| Max stitch length | — | 5mm |
| Presser foot lift | — | Manual, knee-operated |
| Motor | — | Built-in silent, energy-saving servo motor |
| Lubrication | — | Semi-dry head, oil-free |
| Thread trimming | — | Built-in knife, manual |
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 A5E-B AMH2 if…
AI-integrated computerized lockstitch with the largest operating space in its class — automatically adapts to changing fabric thickness mid-seam.
- Largest-in-class workspace
- Adapts to fabric thickness
- Auto trim, backtack & foot lift
Choose the JACK F6 if…
Direct-drive computerized lockstitch machine running up to 5000 s.p.m. on a built-in silent servo motor, with oil-free semi-dry lubrication and a built-in thread-cutting knife for shirts, wovens and uniform work.
- Built-in servo motor
- Built-in thread-cutting knife
- Oil-free semi-dry head
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 A5E-B AMH2 and the JACK F6?
Both list the same top speed of 5000 s.p.m. JACK A5E-B AMH2 lists an automatic thread trimmer; JACK F6 does not list one. Series: JACK A5E-B AMH2 — Lockstitch (A-series), AI-integrated; JACK F6 — Lockstitch, direct drive.
Which is better, the JACK A5E-B AMH2 or the JACK F6?
It depends on your fabric, operation and daily volume. The JACK A5E-B AMH2 is described as: AI-integrated computerized lockstitch with the largest operating space in its class — automatically adapts to changing fabric thickness mid-seam. The JACK F6 is described as: Direct-drive computerized lockstitch machine running up to 5000 s.p.m. on a built-in silent servo motor, with oil-free semi-dry lubrication and a built-in thread-cutting knife for shirts, wovens and uniform work.
What is the price of the JACK A5E-B AMH2 and the JACK F6?
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.