With the adoption of a fully automatic
lubrication system and reduction in weight of needle bar
and thread take-up parts, high speed sewing up to 3,600
s.p.m. is possible. (371U2A/3A)
The use of a special needle bar
thread guide allows threading of the machine according to
the type of thread used and ensures optimum seam quality.
Presser foot rise up to 13mm which
is very convenient for sewing heavy weight materials such
as bulky knit.
Both needle thread and gimp can
be cut simultaneously by operating a treadle which allows
continuous and highly efficient operation.
Complete change in appearance design.
Despite increase in maximum speed,
vibration remains at the same level as previous models.
With adoption of a newly developed
rotary hook, sewing a low thread tension has become possible
which improves sewing performance.Note: Regarding the motor
pulley relative to the sewing speed, each model is set for
2,800 s.p.m. at the time of shipment from the factory. Motor
pulley for maximum speed to be used with 371U2A/3A/4A is
supplied as option.
Buttonhole as made by
371U2A on shirt front.
Buttonhole in knitwear made by 371U4A topcorded sewn