Two needles. Four threads.
Creates an overlock seam while the fabric edge is trimmed and enclosed. The specification combines 2mm needle spacing with a 5mm overedge width.
SiRUBA · Heavy-material industrial overlocker
Made for bulkier seams.
Equipped for a smoother workflow.
The SiRUBA 747L-514H-4-25 is a two-needle, four-thread industrial overlocker configured for heavy materials and bulky knitwear. Join and edge-finish your fabric in one operation, with differential feed to help manage how the material travels through the seam.
This package adds the ECB-U solenoid thread cutter, automatic thread trimming and a waste collector, plus a table and wheeled stand.
Compressor required: this setup requires a compressed-air supply.
A purpose-built heavy-material configuration
More than a standard four-thread overlocker.
SiRUBA identifies the 514H-4 configuration for over-seaming bulky knitwear, including sweater fabrics. It is a practical option for garment workrooms needing a four-thread seam on heavier materials, with the cutter and collection system helping reduce separate thread-handling tasks.
Electric thread-chain cutting
The ECB-U solenoid cutter trims the thread chain. Automatic and manual cutting functions support different working methods without reaching for snips after every seam.
Differential feed control
A 0.7–2 differential-feed range lets you adjust feeding to help manage stretching or gathering. Test with your actual fabric, thread and seam layers.
Waste collection included
The supplied collector helps manage sewing waste around the workstation. A table and stand on wheels make it easier to position the machine in your workroom.
Your supplied package
The machine and its workstation.
Full model: 747L-514H-4-25/ECB-U/DKLU2-1.
The tabletop is 550mm deep. Allow additional working room around the machine for your fabric and waste collection equipment.
Included
- SiRUBA heavy-material 2-needle, 4-thread overlocker
- DKLU2-1 direct-drive motor/control configuration
- ECB-U solenoid thread cutter with automatic trimming
- Waste collector
- Table and stand on wheels
Model-specific details
Specifications at a glance.
- Stitch formation
- 2-needle, 4-thread overlock
- Material configuration
- Heavy material / bulky knitwear
- Needle spacing
- 2mm
- Overedge width
- 5mm
- Maximum stitch length
- 3.6mm
- Differential feed
- 0.7–2
- Maximum sewing speed
- 6,500 stitches per minute
- Presser-foot lift
- 6.5mm
- Needle system
- DC×27; catalogue needle size #16
- Thread cutter
- ECB-U electric solenoid system
- Air supply
- Compressor required
Manufacturer specifications for the 747L-514H-4-25/ECB-U. Working speed, needle size and settings must suit the fabric and seam; maximum speed is not appropriate for every job.
Before you choose.
Is this a five-thread safety-stitch machine?
No. This model produces a four-thread overlock seam. It does not form the separate chainstitch of a five-thread safety-stitch overlocker or the parallel hems of a coverstitch machine.
Does “heavy material” mean any heavy fabric?
No single machine suits every material. This configuration is particularly relevant to bulky knitwear. For unusually dense materials or thick seam crossings, have your fabric and seam construction checked before choosing.
Is the waste collector included?
Yes, along with the cutter, table and wheeled stand. A compressor is required to provide the compressed-air supply for this setup.
Manufacturer information
Explore the official SiRUBA 700L series brochure and ECB-U cutter information. These resources cover multiple models and optional devices; the package listed above is the configuration supplied here.
Compare our industrial overlockers if you need a different seam or material configuration.
Buy online from Direct Sewing, with nationwide New Zealand shipping available. Delivery arrangements depend on your location and workshop access.