A lubrication-free rotary hook is used and
no oil is supplied to the areas of the
needle bar, thread take-up or hook.
Complete dry type (S-7200C-
□
5
□
)
Max. sewing speed 4,000rpm
This type is equipped with a sealed oil
tank, supplying constant clean oil only to
the rotary hook. It is also possible to stop
the lubrication to the rotary hook and use
a lubrication-free rotary hook.
Semi-dry type (S-7200C-
□
3
□
)
Max. sewing speed 5,000rpm
This type is equipped with a sealed oil tank,
supplying constant clean oil only to the
minimum parts requiring lubrication.
Minimum lubrication type (S-7200C-
□
0
□
)
Max. sewing speed 5,000rpm
Clean sewing without oil staining
Excellent sewing
capability for a wide
range of materials
Medium materials spec.
(S-7200C-
□□
3)
Preventing needle breakage at reverse stitching
(with G50 operation panel)
oil tank
Regular stroke
rotary hook
needle bar, thread take-up
By changing the thread
take-up stroke to the
longer one, the range of
sewing capability can be
expanded for heavy
materials.
When reverse stitching is performed with thick materials (with the quick
back switch), needle breakage tends to occur. With the thorough
analysis of its cause, the function preventing the needle breakage has
been introduced. (Patent applied for)
Longer stroke
