Brother T-8421C Sewing Machine User Manual


 
T-8452C,T-8722C,T-8752C
/ thread trimmer
sewn by
Jeans
T-8722C Direct Drive,large hook,w/ thread trimmer
T-8752C Direct Drive,split needle bar,large hook,
w/ thread trimmer
Great needle penetration force
Selectable needle feed/lower feed
Clean sewing
Bags
T-8421C
Direct Drive
w/o thread trimmer
Sewing speed
Powerful 550W motor outputs large amounts of torque even at slow speeds so that strong needle penetration force can
be obtained. This allows accurate sewing of heavy materials and joints. If the needle penetration resistance increases,
such as when sewing heavy materials and materials with joints, vibration control (intermittent impact) automatically
increases the penetration force.(Patent pending)
Great Needle Penetration Force
Adjustment of the thread trimming timing is done simply by adjusting the position of
the thread trimming cam relative to the lower shaft. There is no need to remove the
timing belt and the timing between the needle and the rotary hook does not change,
so there is no need for troublesome re-adjustment when the thread trimming timing is
adjusted. Adjustment is easy even if the material or thread thickness changes, so
that accurate thread trimming can be obtained.
Easy Thread Trimming Timing Adjustment (T-8422C/8452C/8722C/8752C)
Using a highly-rigid frame and computer analysis that achieves balance between the main parts , its noise and vibration
are minimized. In particular, the high-frequency noise from the rotary hook opener that is irritating to the ears has been
greatly reduced. This reduces operator discomfort and alleviates stress.
Low Noise and Low Vibration for Stress-Free Operation (T-8421C/8422C/8452C/87722C/8752C)
According to the operator's
preference (G50 panel)
The curve of the acceleration at
sewing start can be selected on the
operation panel. The machine
provides more options for
customizing operations by the
operator's preference.
Quick back device
This is located in a place
where it can be pressed
easily in order to increase
working efficiency.
Further Improved Ease of Operation