A5-WN: Computerized, Direct Drive, Semi-Dry, Drop Feed, Single Needle Lockstitch Machine with Birds Nest Prevention

A5-WN: Computerized, Direct Drive, Semi-Dry, Drop Feed, Single Needle Lockstitch Machine with Birds Nest Prevention

Jack Sewing Co, LTD
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The Jack A5-WN was created specifically for the needs of high end fashion houses. The A5-WN has been upgraded to include our "Birds Nest Prevention System" designed to eliminate the tangle of threads (Birds Nest) that often occur when back-tacking seams. The A5-WN also features our "Semi-Dry" lubricating oil system technology, virtually eliminating the risk of oil contamination on fabrics. The A5-WN features several automatic functions designed to increase operator productivity and reduce fatigue. Suitable of sewing on a wide variety of materials from lightweight blouses to denim jeans with ease. Built on the same all steel chassis all Jack machines are famous for, the harmonized internals driven by the coaxial direct drive motor reduce vibrations and noise at all sewing speeds.


  • Direct Drive AC Servo Motor
  • Adjustable Sewing Speed
  • Programmable Sewing Operations
  • Automatic Foot Lifter
  • Automatic Thread Cutter
  • Automatic Bartacking
  • Needle Position Sensor (Up/Down)
  • Electronic Thread Tensioner
  • Birds Nest Prevention System
  • Reverse Button on Machine Head
  • Half/Full Stitch Button on Machine Head
  • Semi-Dry Oil System
  • Oil Shield Technology
  • Integrated Bobbin Winder
  • Integrated Adjustable LED
  • Complete with Table and Stand

Requires use of Jack Suction Device (INCLUDED). Electric Suction Device requires use of 220V power source. Pneumatic Suction Device requires use of minimum 150 PSI air supply.

  • Features
  • Specifications
  • What's Included
  • Shipping

Work Smarter

The Jack A5-WN 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 A5-WN is full of features not found on competitively priced machines.

Simplified Control

The Jack A5-WN 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 A5-WN 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 A5-WN 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 A5-WN 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.

Improved Thread Trimmer

The Jack A5-WN features an improved automatic thread trimmer that leaves less than 3mm of thread remaining on the finished seam. 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.

Birds Nest Prevention System

The A5-WN "Birds Nest Prevention System" was designed to sew clean, perfect seams that are required for high end fashion. Designed to reduce the frequency a worker has to spend correcting seams on garments. Virtually eliminate unsightly thread clusters (Birds Nest) that usually occur on beginning and end bartacks. Requires Jack Suction Device (INCLUDED).

Dry Head

The Jack A5-WN head was designed to operate dry by utilizing a special DLC (Diamond Like Carbon) coating on the needlebar. This coating allows the machine head to operate without the use of lubricating oil virtually eliminating the possibility of oil contamination on fabrics.

Oil Shield Technology

The Jack A5-WN "Oil Shield" technology features a redesigned oil lubrication system further reducing the possibility of oil contamination on fabrics. The oil pan has been integrated into the machine and sealed. This system combined with the dry head creates a "Semi Dry" lubricating system that eliminates oil contamination on fabrics.

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 A5-W Machine Head
  • -Jack A5-W Oil Pan Cover
  • -Jack Thread Stand
  • -Jack Tool Set
  • -Jack Machine Cover
  • -Jack Parts Catalog and Manual
  • -Jack Machine Oil
  • -Bobbin and Needle Set

Box 2:

  • -Jack A5-W Table
  • -Jack Heavy Duty Stand

Box 3:

  • -Jack Suction Device (Pneumatic or Electronic)

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