9. Specifications
9.2 AZ7500SDR-8 class
Model
AZ7500SDR-8 AZ7520SDR-8 AZ7500SDR-31 AZ7520SDR-31
Dimensions 380 （L） × 245 （W） × 310 （H) mm
Weight
27 kg
Construction Dust-proof, Oil-tight and completely sealed
Stitch Type
（ ISO standard )
(504, 401) (514, 401) (504, 401) (514, 401)
Application Safety stitch of knitted or woven fabrics for heavy weight materials
Sewing Speed
up to 7,500 sti/min up to 7,000 sti/min
Stitch Length
1.0 - 4.0 mm
Number of stitches per inch(25.4 mm)
6.5 - 25 stitches
per 30 mm
7.5 - 30 stitches
Needle System
DC × 27 (for both sides of overlock stitch and double chainstitch)
Size #8 - #14 (60 - 90)
Needle Stroke 23.7 mm 24.7 mm
Presser Foot Lift up to 6 mm up to 5.5 mm up to 6 mm up to 5.5 mm
Feed Regulation Push button System
Differential Ratio
Max. normal differential (Gathering)
1 : 2.3
Max. reverse differential (Stretching) 1 : 0.7
(Max. reverse differential ratio is available up to 1 : 0.6 by adjusting the position of the lever pin. )
Differential Feed
Regulation
Adjustable by moving external lever even during operation
Adjustable by Micro adjuster
Knives for Fabric
Cutting
Lower Knife : Flat type, made of special steel
Upper Knife : Flat type or Angled type, made of super hard alloy
Lubrication Oil YAMATO SF OIL No.28
Capacity or Oil
Reservoir
900 ml
Lubrication Oil is fed forcedly by trochoid pump
Compliance With
Regulation
Machinery directive, RoHS directive
Installation Fully-submerged type and Semi-submerged type
Noise Declaration
Lp
A
≦ 85 dB (A) （7500 sti/min) Lp
A
≦ 85 dB (A) （7000 sti/min)
Standard complied with: ISO 10821-C6.2, ISO 11204 GR2
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