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Standard Thread Tension; Upper And Lower Thread Tension - Brother BAS-326G Service Manual

Direct drive programmable electronuc pattern sewer.
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7-2. Standard thread tension

Specifications
Upper thread
Lower thread
Upper thread tension (N)
Lower thread tension (N)
Thread take-up spring height
(mm)
Thread take-up spring
tension (N)
Pre-tension (N)
Needle
Normal sewing speed

7-2-1. Upper and lower thread tension

4661Q
Heavy-weight materials (-01)
#20 or similar
#20 or similar
1.4 − 1.8
0.6 − 1.2
0.1 − 0.6
DP x 17 #19
2,000 rpm
BAS-311G, BAS-326G
Medium-weight materials (-02)
#50 or similar
#50 or similar
0.8 − 1.2
0.2 − 0.3
7 − 10
0.2 − 0.5
0.1 − 0.3
DP x 5 #16
2,000 rpm
7. ADJUSTMENT
5155Q
89

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