Machine Specifications - Brother S-7220B Instruction Manual

2. MACHINE SPECIFICATIONS

Max. sewing speed
Start backtacking and continuous backtacking speed
End backtacking speed
Max. stitch length
Lifting lever
Presser foot
height
Knee lifter
Feed dog height
Needle (DB×1, DP×5)
Motor
Control circuit
1
* ...When sewing at speeds of 4,000 rpm or higher, set the stitch length to 3.5 mm or less.
2
* ...When sewing at speeds of 3,000 rpm or higher, set the stitch length to 4.5 mm or less.
Quick reverse
Thread wiper
Lubrication type
Use
-403
5,000 rpm*
Rotary hook
-403, -433
Lubricated /
for medium materials
Lubricating oil
Rotary hook
High-speed spindle
Needle bar
S-7220B
0
Minimum lubrication
3
For medium-weight
materials
-433
1
4,000 rpm
220 - 3,000 rpm
1,800 rpm
4.5 mm
6 mm
16 mm
1.0 mm
#11 - #18
AC servo motor (4-pole, 450W)
Microprocessor
-403, -405
2. MACHINE SPECIFICATIONS
4
O
O
3
Semi dry
5
For heavy-weight materials
-405
4,000 rpm*
5.5 mm
1.2 mm
#19 - #22
-405
Lubricated /
for heavy materials
-433
High-speed spindle
Special Brother grease
2
2