Upper Thread Tension - Brother BE-438D Instruction Manual

4. PREPARATION BEFORE SEWING

4-5-2. Upper thread tension

[Reference thread tension]
Use
Upper thread
Lower thread
Upper thread tension
(N)
Lower thread tension
(N)
Pre-tension (N)
Needle
[Guide to maximum sewing speed for KE-430D]
Use
8 layers of denim
12 layers of denim
Ordinary materials
Knitted materials
Foundation garments
Note:
The thread may break due to heat under some sewing conditions.
If this happens, reduce the sewing speed, or use the liquid cooling tank.
27
Stronger
Weaker
Stronger
Weaker
Knitted materials
Ordinary materials (-01)
#50 or equivalent
#60 or equivalent
0.8 - 1.2
DP x 5 #14
Standard hook
3,200
2,700
2,700
2,500
Turn the tension nut (1) (main tension) to adjust the tension
as appropriate for the material being sewn.
Furthermore, turn the tension nut (2) (sub-tension) to adjust
the remaining length of upper thread to 35 - 40 mm, when
the thread take-up lever is not used.
4434Q
KE-430D
Foundation
(-07) garments (-0F)
#60 or #60 or
equivalent equivalent
#80 or #60 or
equivalent equivalent
0.2 - 0.3
0.05 - 0.3
DP x 5 #9
Max. sewing speed (rpm)
Large hook
KE-430D, BE-438D
Denim (-02)
#30 or equivalent
#50 or equivalent
1.6 - 2.0
DP x 17NY #19
2,500
2,500
BE-438D
#60 or equivalent
#60 or equivalent
1.0 - 1.8
0.2 - 0.4
0.1 - 0.4
DP x 17NY #12