B-65282EN/05 11.SPINDLE-RELATED DETECTORS
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Attachment
Attaching the sensor ring
Provide a flange on the shaft side and then attach the sensor ring in
the axis direction using the sensor ring attachment hole. Secure it
after performing centering so that the swing relative to the rotation
center is 10 µm or less by using the centering track.
Shaft
Sensor ring
mounting hole
B
Flange
A
0.01
A
Specification
Outside diameter of the
centering track (φ
φφ
φB)
Sensor ring mounting hole position Screw
A860-2140-T411 φ101 Six φ5.5 through holes evenly located on a φ92 circle M5
A860-2140-T511 φ152.2 Six φ5.5 through holes evenly located on a φ140 circle M5
A860-2140-T611 φ203.4 Six φ6.6 through holes evenly located on a φ183 circle M6
NOTE
- Make design in such a way that the clearance between the outer surface of the flange and the inner diameter of the
sensor ring is approximately 0.1 mm for centering.
- Secure the sensor ring using end face screwing instead of shrinkage fitting.
- The sensor ring consists of the phase Z ring and phase AB ring. Since it is secured by screws in advance, do not
remove them. Since a countersunk hole is not provided, a machine must be designed so that the head of a screw is
out of the way of it.
- To perform centering, be sure to use the centering track. (The outer surface of the phase Z ring and the teeth pitch
circle do not have the same axis.) For centering, use a plastic hammer to prevent the teeth of a gear being damaged.
- Magnetic dust attached on the gear teeth may cause a detection error. Perform air blowing or the like upon completion
of centering.