A4E: Computerized, Direct Drive, Drop Feed, Single Needle Lockstitch Machine

A4E: Computerized, Direct Drive, Drop Feed, Single Needle Lockstitch Machine

Jack Sewing Co, LTD
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The Jack A4E is the newest single needle lockstitch machine from Jack Sewing Machine Co, LTD. The A4E gives you all the amazing features you've come to expect from the A4 and improving on that design.

Featuring an all new chassis design that provides increased rigidity, reducing vibrations at higher speeds. The A4E also features a variable stitch function, giving you some decorative stitches within the control panel with the push of a button. The improved thread trimmer reduces the thread tail left after sewing. The all new control panel gives you all the same automatic functions such as adjusting sewing speed, thread trimming and back-tacking, but now allows you to control stitch length via push of a button and eliminates the external adjustment knob. 


  • Direct Drive AC Servo Motor
  • Adjustable Sewing Speed
  • Programmable Sewing Operation
  • Programable Decorative Stitches
  • Automatic Foot Lifter
  • Improved Automatic Thread Cutter
  • Automatic Bartacking
  • Needle Position Sensor (Up/Down)
  • Electronic Thread Nipper
  • Electronic Stitch Length Adjustment
  • Reverse Button on Machine Head
  • Half/Full Stitch Button on Machine Head
  • Integrated Bobbin Winder
  • Integrated Adjustable LED
  • Complete with Table and Stand

Preorder Available, Limited Quantities in Stock Early May

  • Features
  • Specifications
  • What's Included
  • Shipping

Work Smarter

The Jack A4 was designed to improve operator efficiency and reduce fatigue. Built on the same all steel chassis as the rest of the Jack lineup and driven by the coaxial direct drive AC servo motor, the A4 is full of features not found on competitively priced machines.

Simplified Control

The Jack A4 control panel is simple and intuitive. From the control panel the user can adjust sewing speed, set needle position (up/down), turn on/off auto thread trimmer function, set automatic foot lifter operation, turn on/off electronic thread tension, set bartacking function or even program segmented sewing allowing the operator to repeat simple sewing tasks like sewing labels or pockets.

User Friendly

The Jack A4 comes standard with integrated adjustable LED lighting, a half/full stitch button and a reverse button that can be used instead of the reverse lever. The presser foot can be raised by hand or automatically by foot pedal. On top of the machine is an integrated bobbin winder, allowing you to wind bobbins while continuously sewing.

Direct Drive

No complicated motors or belts to deal with; the Jack A4 comes equipped with an integrated AC servo motor. The servo motor is mated to the machine head by a proprietary coaxial shaft that reduces vibration and noise; this allows the user to perform consistent seams at any speed.

Automatic Foot Lifter

The Jack A4 features an automatic foot lifter with a variety of settings. The foot lifter can be set to automatically lift with the optical fabric sensor or simply by slightly depressing the foot pedal backwards. There are several settings that can be adjusted by the push of a button depending on the needs of the sewing operation.

Automatic Thread Trimmer

The Jack A4 features an automatic thread trimmer function. The thread trimmer function can be tuned on or off depending on the sewing operation with just a simple push of a button. Once turned on, fully depress the foot pedal backwards to cut the thread.

Modern Design

The Jack Sewing Machine Co. LTD, lineup of machines have all undergone design updates improving not only functionality but aesthetics. In addition to the redesigned machine head, the heavy duty table and stand have all undergone updates as well. Each machine ships as a complete set.

Machine Specifications


Lightweight - Medium Weight Fabrics

Feed Type

Drop Feed

Max. Sewing Speed

5,000 Stitches/Min

Max. Stitch Width





Integrated Direct Drive AC Servo

Lubrication System




Presser Foot Height

5mm By Hand, 13mm By Knee Lever


DBx1 #11-18

Bobbin Winder



Integrated 3-Way Adjustable LED

Box 1:

  • -Jack A4 Machine Head
  • -Jack A4 Oil Pan
  • -Jack Thread Stand
  • -Jack Tool Set
  • -Jack Machine Cover
  • -Jack Parts Catalog and Manual
  • -Jack Machine Oil
  • -Bobbin and Needle Set

Box 2:

  • -Jack A4 Table
  • -Jack Heavy Duty Stand

Eligible for Flat Rate Shipping; machine ships unassembled via Fedex Ground/Home Delivery. Please check our Shipping Policy for details.