
2.MECHANICAL DESIGN HANDLING, DESIGN, AND ASSEMBLY B-65382EN/02
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2.2 MOUNTING MAGNET PLATES
Direction and mounting hole locations of magnet plates
Mount the metallic side of a magnet plate onto the machine, and face
the black resin side toward the coil slider.
NN
P
1
P
1
P
1
P
1
P
2
G
"N" mark
"N" mark
Magnet plate
Magnet plate
Metallic
surface
Resin
surface
Machine
mounting surface
Mount the metallic side
onto the machine.
When mounting multiple magnet plates, be sure to arrange them so
that their "N" marks are oriented in the same direction.
NOTE
If the mounting direction ("N" mark direction) of a
magnet plate is incorrect, the motor cannot be
driven normally.
The table below indicates reference dimensions for the mounting
screw hole pitch (P1), the shortest screw span between adjacent
magnet plates (P2), and the gap between magnet plates (G). In
accordance with these dimensions, produce mounting holes (screws)
on the machine.
Type of
magnet plate
Applicable model P
1
(mm) P
2
(mm) G (mm)
B, C LiS 1500B1/4 and up 90±0.1 60±0.1 (1)
A Up to LiS 900A1/4 30±0.1 30±0.1 (0.5)
Mounting surface precision on the machine side
As a guideline, the machining precision of the mounting surface on
the machine side should not exceed 50 µm for both roughness and
undulation.
NOTE
1 Do not mount the magnet plate on a place where the magnet plate or mounting
portion may deform (bend) more than 0.1 mm. In particular, due to repeated
deformation caused by passes of the coil slider, the resin of the magnet plate is
broken, the magnet is misaligned, or other damages are caused, probably disabling
normal operation of the motor.
2 It is recommended that the entire mounting surface be used basically to mount the
magnet plate onto the machine. When it is mounted using only the areas near
mounting bolts to reduce the weight through material removal of the mounting
surface, be careful not to deform the coil slider more than 0.1 mm due to motor
operation or expected impacts.