JACK · Overlock

JACK® E4S‑6‑03

JACK® E4S-6-03/333 – 6-Thread Universal Overlock with Direct Drive – Complete Setup, Table & Stand Included

The JACK® E4S-6-03/333 is a high-speed 6-thread universal overlock machine built for industrial garment production.

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Pricing, configuration, and ordering on the Shopify store.

Performance

Stitch Length: 0.8–4.6 mm
Max Sewing Speed: 5,500 SPM

Capacity

Needle System: DCx27 #14
Number of Needles: 3
Needle Gauge: 3×2 mm
Presser Foot Lift: 5–5.5 mm

Automation

Drive Type: Direct Drive (beltless, mounted on main shaft)
Lubrication: Central Automatic (Fully Submerged, with oil return constraint)

Physical

Model: E4S-6-03/333
Machine Type: Industrial 6-Thread Universal Overlock / Serger
Thread Configurations: 3-Thread / 4-Thread / 5-Thread / 6-Thread
Stitch Width: Up to 4 mm
Differential Feed Ratio: 0.7–2.0
Work Surface Height: 27 mm (increased)
Motor: Integrated Direct Drive Servo Motor
Feed Type: Bottom Differential Feed with L/M/H Selector
Features: One-Key Reset, Intelligent Sleep Mode, LED Lighting (3-level), Oil-Proof Needle Bar
Application: Light to Medium Weight Fabrics
Complete table dimmensions: 47"x21"
Setup: Complete with table and stand

Manufactured by

Jack. 30+ years of industrial sewing.

Why Jack →

Detail

How it runs on the floor

The JACK® E4S-6-03/333 is a high-speed 6-thread universal overlock machine built for industrial garment production. It handles up to six stitch configurations — including 3-thread narrow, 3-thread standard, 4-thread mock safety stitch, 5-thread safety stitch, and full 6-thread overlock — making it one of the most versatile commercial sergers available. Equipped with an integrated direct drive servo motor, automatic lubrication, and intelligent sleep mode, this complete setup includes the machine head, industrial table, stand, and servo motor — ready for production.

JACK E4S-6-03/333 6-thread universal overlock machine head (ships assembled)
Heavy-duty fully submerged industrial sewing table
Industrial stand with motor mount
Integrated direct drive servo motor
LED work lamp (3-level brightness adjustment)
Standard accessories kit (needles, loopers, tools)
Instruction manual

Key Features

6-thread universal overlock — configurable as 3-thread narrow, 3-thread standard, 4-thread mock stitch, 5-thread safety stitch, or full 6-thread overlock for maximum versatility
Integrated direct drive servo motor — mounted directly on the main shaft for quieter operation, reduced vibration, lower energy consumption (up to 75% less than clutch motors), and precise speed control
Patented L/M/H Selector Lever — easily adjust feed dog inclination for light (A), medium (M), or heavy (H) fabrics without manual adjustment
40-50% faster response time — improved acceleration and deceleration for easier sewing and greater productivity
Oil return constraint system — enclosed needle bar mechanism with integrated oil filter and special lubrication tray prevents oil spills and ensures clean seams
One-Key Reset — intelligent panel for easy parameter adjustment, LED light control, and quick factory reset
Intelligent sleep mode — automatically reduces power consumption when idle on the production floor
Increased presser foot height to 27mm — provides larger work surface for bulky materials
Integrated LED work field illumination — 3-level adjustable brightness for optimal visibility
Max sewing speed 5,500 SPM — reliable high-output performance for industrial volume
Central lubrication system — continuous oil circulation for sustained high-speed production

Ideal For

Garment factories and industrial sewing operations requiring multi-configuration overlock capability
Production of knitwear, sportswear, activewear, and stretch fabrics
Light to medium-weight materials including cottons, knits, polyester, nylon, sheer fabrics, and denim
Blouses, shirts, men's/ladies'/children's apparel, uniforms, overalls, and lingerie
Industrial sewing rooms upgrading from belt-drive to direct drive overlock machines

Questions

Before you buy

Quick answers to the questions buyers ask most about Jack industrial machines. For pricing, configuration, and live availability, the Shopify product page is always the source of truth.

How do I get current pricing for this Jack model?

Pricing and live availability are handled on the Shopify store. Tap 'View on Shopify' above to see the current price, configuration options, and delivery estimates for your zip code.

Does the machine ship as a complete setup?

Most Jack industrial models ship as complete production setups: head, servo motor, table, and stand. The product description above lists exactly what's included for this specific model.

What kind of warranty does Jack provide?

Every Jack machine carries a manufacturer warranty against defects in materials and workmanship. Authorized US dealers also provide local service and parts support. See the Shopify product page for the warranty terms specific to this model.

Are genuine Jack replacement parts available?

Yes. Original Jack feed dogs, hooks, gauge sets, presser feet, and electronics are stocked and traceable to the manufacturer. The Service & Parts page lists parts categories; the Shopify store carries the active SKUs.

Where is service available in the United States?

Authorized service technicians work nationwide through Jack's US dealer network. The Service & Parts page explains how coverage works, and each model's Shopify listing routes you to the dealer closest to your production floor.