Specifications - SunStar SC 7900-Series User Manual

SPECIFICATIONS

Explanation
High-speed Cylinder bed 4-needle interlock sewing machine (the Arm type)
Stitch form
ISO 406, 605, 608
Use
General sewing (knitwear)
Sewing speed
4,200 s.p.m (in case of intermittent operations)
1.6mm~2.5mm
Stitch width
Stitches per 25.4mm: 10~16, stitches per 30mm: 12~19
Sewing machine needles: Groz-Beckert UY118GKS
Needle
Retainer needles: Groz-Beckert UY36211
M5 : 5.2mm
Needle distance
M6 : 6.0mm
Needle bar stroke
30mm
Presser foot lift
Type 01: 8mm, type 02: 6mm at the highest point
Feeding volume adjustment system
Adjustment link
Max. Forward differential feed ratio=1.0:1.5
Differential feed ratio
Max. Reverse differential feed ratio=1.0:0.7
Differential feed ratio adjustment system
Adjustment lever
Lubrication system
Automatic lubrication by gear pump
Used oil
General sewing machine oil ISO VG 22
The lower part of bed: 100cc
Oil pan capacity
The inner part of arm: 100cc
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