JST-842DIndustrial Sewing Machines

Direct Drive Double Needle Lockstitch Sewing Machine

Suitable for Light to medium-heavy materials (cotton, denim, canvas, synthetic fabrics, thin leather)

Include material thickness, product photos, required process, voltage and expected daily output.

What this machine can do

Key Features

Stitch-length adjustment

The side-mounted dial allows stitch-length adjustment at the machine head.

JST-842D stitch-length adjustment dial

Under-bed mechanism

The lower view shows the mechanical components beneath the sewing bed.

JST-842D under-bed mechanism

Double-needle hook area

The double-needle hook arrangement supports lockstitch formation for two parallel stitch lines.

JST-842D double-needle hook area

Parallel stitch sample

The sample demonstrates the parallel stitch result of the double-needle configuration.

JST-842D parallel stitch sample
Technical data

Technical Data

Confirmed machine parameters are presented below in a clear table.

LubricationAutomatic lubrication system
ApplicationLight to medium-heavy materials (cotton, denim, canvas, synthetic fabrics, thin leather)
Max. sewing speed5,000 sti/min
Max. stitch length5mm (adjustable)
Feed systemNeedle, feed dog, presser foot synchronous feed system
Presser foot height5mm (manual lift), 10mm (knee lift)
Needle bar stroke31.8mm
Needle typeDP×5 / #11–#18
Max. material thickness5mm (medium-heavy fabrics)
Quick back deviceStandard equipment
Thread tension controlStandard equipment
Weight45kg (net weight), 55kg (gross weight)
PowerDirect drive servo motor, 250W/400W optional
VoltageSingle phase: 110V/220V (compatible with global standards)
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