Large arm pocket providing ease of operation
The arm pocket of 120 mm depth gives a sufficient space, enabling material setting smooth. It is the
most suitable for sewing of vertical buttonholes and hip pocket parts. The arm shape provides a good
view of the needle area, allowing operators to observe the sewing operation.
Sewing with less noise
With thorough review of the mechanisms causing
noise, quieter sewing even at higher sewing speed
than the conventional model has been realized. The
machine is made with a sound design gentle to ears,
eliminating impact noise.
The vibration of the feed base which is transmitted to
an operator is also reduced. The working environ-
ment with less operator fatigue can be materialized.
Fine stitches are available
Precision of stitch point has been improved
With the highly-rigid feed mechanism with servo
control, stitch point is very precise and feed drifting,
which is specific to electronic sewing machines, does
not occur even in high-speed sewing of weighty mate-
rials. The servo control also makes home position de-
tection unnecessary.
Skipped stitches are reduced
The shape of the looper, the thread take-up amount
and some other parts have been reviewed. Skipped
stitches and insufficient thread tightening due to a
change of thread tension are reduced, regardless of
types of threads. The range of sewing capability has
been enlarged.
Range of sewing capability
RH-9820
Conventional model
(low)
(high)
Thread tension
Approx. 20%
enlarged
Zigzag width 3.0 mm, Cutting after sewing,
2 pieces of polyester serge (one piece with interlining on one side)
Spun yarn #40, Lower thread tension: 30g
Sewing speed: Conventional model - 2,200 rpm, RH-9820 - 2,500 rpm
Sound
(rpm)
2,200
2,200
2,500
Conventional model
RH-9820
