●
Sensor Shaft Mounting Procedure
Item Description Remarks
(1) Coupling of Machine
shaft and Sensor shaft
① Be sure to use a coupling device to link the 2 shafts.
(Refer to Appended Fig.1 for the recommended coupling
device specifications.)
A `direct-link` format
will result in shaft
fatigue and/or breakage
after a long periods.
Therefore, be sure to use
a coupling device to link
the shafts.
(2) For gear-type linkage
① If a gear linkage is used, be sure that some backlash exists.
Incorrect gear mounting
can result in gear
bending or breakage.
(3) For rack-and-pinion
type linkage
① Be sure that backlash exists at all rack positions.
Incorrect
rack-and-pinion
mounting can result in
gear bending or
breakage.
(4) For chain or pulley
linkage
① When a chain or pulley linkage format is used, there is an
inherent risk of the shaft’s load being increased by the
resulting tension.
Therefore, a bearing should be used, with the shafts being
linked by a coupling device immediately behind the bearing.
(5) Shaft mounting
position
① The shaft should be attached to the coupling device or gear
at a point which is as near to the Sensor body as possible.
●B-4●
OK
NG
Coupling device
Direct link
Direct link
Shaft
Be sure that the distance between shafts will not
be altered by vibrations, shocks, etc.
Be sure that backlash exists
at all gear positions.
The Sensor shaft pinion should be as light (small) as possible. This
is especially true for environments where vibration/shocks are likely.
Be sure that backlash exists
at all rack positions.
Be sure that the distance between
the rack and pinion will not be
altered by vibrations, shocks, etc.
Be sure that the distance between the rack and pinion is
not altered when horizontal motion of the rack occurs.
The Sensor shaft pinion should be as light (small) as possible.
This is especially true for environments where vibration/shocks
are likely.
Recommended linkage format :
Chain
Bearing
Coupling device
Chain
sprocket
Even a small amount of tension
can produce a considerable load
on the shaft.
This linkage format is also applicable
to the ’rack-and-pinion’ and ’gear’
methods shown above.
NG
Coupling device
or gear
Never use an extended
shaft format.
This distance should be as short as possible.
When this distance is short, the load
placed on the bearing by
vibrations/shocks is slight.
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