Read Sharp ER-A490 (serv.man8) Technical Bulletin online
3.Description:
<1> SP Gear
A change has been carried out in the dimensions of the SP gear. The dimensions
have been changed from ø4.5 to ø4.75 mm. This action has been carried out as
a measure to improve the revolving performance. Please refer to section “A” of
have been changed from ø4.5 to ø4.75 mm. This action has been carried out as
a measure to improve the revolving performance. Please refer to section “A” of
the figure for details concerning this change. A change has also been carried
out in the dimensions of the outer diameter of the shaft. The dimensions have
been changed from ø7.6 to ø7.7 mm. Please refer to section “B” of the figure
out in the dimensions of the outer diameter of the shaft. The dimensions have
been changed from ø7.6 to ø7.7 mm. Please refer to section “B” of the figure
for details concerning this change.
<Distinguishing marks>
An “A” has been marked on the side face of the changed parts.
<Distinguishing marks>
An “A” has been marked on the side face of the changed parts.
<2> Pulley
A change has been carried out in the dimensions of the hole. The dimensions
have been changed from ø4.5 to ø4.75 mm. This action has been carried out as
have been changed from ø4.5 to ø4.75 mm. This action has been carried out as
a measure to improve the revolving performance. Please refer to section “C” of
the figure for details concerning this change.
<Distinguishing marks>
the figure for details concerning this change.
<Distinguishing marks>
The changed parts are black in color (parts before the change was carried out are
white in color).
white in color).
<3> SP Frame
A change has been carried out in the position of the groove for the E-ring.
The groove for the E-ring has been moved outward from 9.5 to 10.0 mm.
This action has been carried out as a measure to stabilize the machining
The groove for the E-ring has been moved outward from 9.5 to 10.0 mm.
This action has been carried out as a measure to stabilize the machining
measurements of the shaft. Please refer to section “D” of the figure for details
concerning this change. In accordance with this change a change has also been
concerning this change. In accordance with this change a change has also been
carried out in the length of the shaft. The length of the shaft has been changed
from 11.5 to 12.8 mm. Please refer to section “E” of the figure for details
concerning this change.
from 11.5 to 12.8 mm. Please refer to section “E” of the figure for details
concerning this change.
<Distinguishing marks>
The length of the changed parts is longer than the length of the parts before the
change.
The length of the changed parts is longer than the length of the parts before the
change.
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