Bernette Airlock b64 - Needle Thread; Looper Thread

Sewing start
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2020-09 EN 5040064.00A.04
Needle Thread
Needle size and thread type must be carefully matched. The correct needle thickness depends on the
selected thread as well as the fabric being used.
• The fabric type determines the thread type and point form.
• The thread type determines the needle size.
Needle sizes of 80/12 100/16 can be used on the machine.
Thread type Needle size
Polyester Overlock Thread No. 120 #80 – #100
Polyester Multifilament < No. 120 80 – 90
Wooly Nylon #80 – #100
Decorative Thread/Yarn #80 – #100
Metallic Thread #80 – #100
Check the needle/thread combination
The needle/thread combination is correct, when the thread fits perfectly into the long
groove and goes easily through the needle eye.
The thread can break and skipped stitches can occur when there is too much clearance in
the long groove and the needle eye.
The thread can break and get stuck when the thread scrapes against the edge of the long
groove not fit well into the needle eye optimally.
Looper Thread
A wide variety of thread types can be used as Looper Threads which can be threaded using the Air Threader
System.
NOTICE
Damage by coated or waxed threads
Coated or waxed threads may lose some of their coating in the Air Threader Pipes, which results in
permanent blocking of the pipes. A repair by the Authorized bernette dealer is required.
Avoid the use of coated or waxed threads.