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Speedway SW7-4D High Speed 4 Thread Smart Overlock Machine Complete Unit with Table and Stand

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Market Price: $1,906.00
$1,824.00
Save $82.00 per unit
SKU:
SW7-4D
Condition:
New
Shipping:
  • Flexible financing available through Synchrony
Need a Part? Browse our +500,000 Sewing Machine Parts Catalog!

Speedway SW7-4D High Speed 4 Thread Smart Overlock Machine Complete Unit with Table and Stand

Market Price: $1,906.00
$1,824.00
Save $82.00 per unit

Speedway SW7-4D High Speed 4 Thread Smart Overlock Machine Complete Unit with Table and Stand

Market Price: $1,906.00
$1,824.00
Save $82.00 per unit

Speedway SW7-4D Direct Drive High Speed 4 Thread Smart Overlock Machine Complete Unit with Table and Stand

The SW7-4D is a high-performance 4-thread smart overlock machine engineered for demanding professional apparel production environments. This intelligent system features automated thread trimming, silent presser foot lifting, and a step motor system that automatically adjusts presser foot pressure based on fabric thickness, eliminating manual adjustments when transitioning between different fabric weights. The machine handles both plain seam and mock safety stitch configurations, providing versatility for standard seaming operations and decorative safety stitch appearances without requiring a true chainstitch needle line. Built on the same proven smart automation platform as its 5-thread counterpart, this direct-drive overlock delivers consistent, high-speed performance ideal for high-volume garment manufacturing where efficiency and reliability are paramount.

MACHINE APPLICATIONS:

  • High-volume garment production — fast, consistent 4-thread seaming with automated functions
  • Variable fabric operations — automatic presser foot pressure adjustment reduces manual intervention across fabric weights
  • Apparel manufacturing — plain seam and mock safety stitch cover primary seaming requirements

MACHINE FEATURES:

  • 4-thread plain seam and mock safety stitch — versatile configuration for standard seaming and decorative safety stitch appearance without a true chainstitch needle line
  • Step motor system — automatically adjusts presser foot pressure to fabric thickness, eliminating manual adjustment when transitioning between fabric weights
  • Automatic thread trimming — reduces cycle time and operator intervention on high-volume production runs
  • Silent presser foot lifter — quieter, smoother operation during fabric positioning
  • Direct drive motor — no belt, lower maintenance, quieter operation, and precise speed control
  • 7,500 SPM maximum speed — high-volume sustained output for demanding production schedules
  • Differential ratio 0.7–2.0 — handles stretch, woven, and layered fabrics without puckering or distortion

MACHINE SPECIFICATIONS:

  • Model: SPEEDWAY SW7-4D
  • Machine Type: 4-Thread Smart Overlock (Plain Seam, Mock Safety Stitch)
  • Needle System: B27 / DCx27, sizes #9–#18
  • Number Of Needles: 2
  • Number Of Threads: 4
  • Needle Spacing: 2 mm (0.08")
  • Stitch Width: 2 mm (0.08") × 4 mm (0.16")
  • Stitch Length: 0.8–4.6 mm (0.18")
  • Differential Ratio: 0.7–2.0
  • Presser Foot Lift: 10 mm (0.39")
  • Max Sewing Speed: 7,500 SPM
  • Auto Functions: Thread trimmer, presser foot lift, pressure adjustment
  • Motor: Direct Drive Servo Motor
  • Drive Type: Direct Drive

THE ADVANTAGES OF A DIRECT DRIVE MOTOR:

  • Silent and use up to 90% less power than clutch motors
  • Infinitely adjustable speed control via foot pedal
  • Full power at all speeds, even at very low RPM
  • Instant start/stop with electronic braking
  • No parts to wear out or adjust
  • Lightweight, precise, and reliable

Machine Warranty Protection

Besides any applicable warranties provided by the Original Manufacturer, Jacksew offers a standalone 90-day limited warranty on defects in materials and workmanship.

  • This warranty covers all the machine parts and labor but any shipping costs must be covered by the customer

  • Only applies under normal sewing conditions as prescribed for the machine

  • Consumable items are not covered (needles, bobbins, bobbin cases, springs, oil, and belts)

  • This warranty does not cover improper use or abuse under heavy use of machines

  • This warranty does not cover flood, fire, or other acts of nature

If there are any warranty issues that arise, we ask that you contact us immediately and let us know the details. In most cases, we can guide you with getting your machine in good sewing condition via phone, text or video chat.

If you need any parts that need to be replaced, we stock the majority of parts for immediate shipment. Some parts not in stock may have to be ordered from the manufacturer and may take 1 to 2 weeks for arrival.

If there is a critical issue that needs to be addressed and is out of scope of minor adjustments or repairs, we will ask you to send us the machine to our shop so we can have it repaired and have it back to good sewing condition. In most cases, we will only need the machine head shipped to us. Shipping charges - both inbound and outbound - are the responsibility of the customer.

Warranty issues do not arise frequently because of our commitment to assemble, test and verify each machine we ship out to our customers. We will never send you a machine directly from the manufacturer in boxes without knowing that the machine will be ready to operate upon arrival.

DISCLAIMER: DUE TO THE HEAVY WEIGHT AND SHIPPING METHODS USED FOR INDUSTRIAL MACHINES THEY MAY EXPERIENCE MARRING AND SCRATCHES DURING SHIPPING. THIS WILL NOT AFFECT THE OPERATION OF THE MACHINE.

ANY DAMAGE OCCURRING DURING SHIPPING MUST BE CLAIMED TO THE FREIGHT CARRIER IMMEDIATELY. UPON REQUEST, JACKSEW WILL PROVIDE ASSISTANCE IN FILING A CLAIM ON YOUR BEHALF DURING SUCH AN EVENT. PLEASE NOTIFY US WITHIN 5 BUSINESS DAYS.


  • Question Answer What forms of payments do we accept?
  • Question Answer Does Jacksew offer financing?
  • Question Answer Will I be charged the sales tax on my order?
  • Question Answer How can I track the progress of my shipment?
  • Question Answer Does Jacksew service sewing machines?
  • Question Answer Can you help me find the right sewing machine for my project?
  • Question Answer Does Jacksew provide custom sewing setups?
  • Question Answer Is Jacksew related to Jack® sewing machines?
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