Reference Section
Installation of Linear Scales
Positioning the Scale
Note: Before beginning mounting procedure, use
"Benching" the scale to the system means aligning the scale by means of benching pins. Pin locations are described on the appropriate interface drawing. Two benching pins are recommended on the long side of the scale and one at the end as shown . This is marked datum A on the interface drawing.
1 Position the benching pins in from either end. 20% of the overall scale length is the recommended location from the edge.
2 Be sure the benching pins do not extend too high in the Z direction to prevent mechanical interference with the sensor or sensor mount.
End
Benching 
Pin
0.2L |
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L
MicroE Systems
Benching pins 
Mounting the Scale
MicroE Systems' linear scales should be affixed to the mounting surface. Two different approaches are described below:
Epoxy and RTV Mounting (Recommended for best accuracy)
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| Optionally, scale clamps may be used to secure the | |||||||||
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End Benching |
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Hard epoxy |
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at one corner, |
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this end only. |
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2Align the scale by placing the edges against the benching pins.
Scale clamp
with adhesive
Side view showing optional scale clamps and scale. Space clamps every 75mm on scales over 150 mm in length.
4around the edges of the scale. This method allows thermal expansion from the benched end of the scale. After adhesive curing, remove the scale mounting clamps or, if permanently installing clamps, make sure they do not interfere with the sensor or sensor mount.Apply a hard epoxy, such as
Two Sided Adhesive Tape Mounting
1cover paper off and place the scale above the final location.Make sure the mounting surface is clean and dry. Peel the
3can be made until the scale is firmly pressed down. After final positioning, push down on the top of the scale to secure it.Gently place the scale on the mounting surface. Positioning adjustments
End Benching
Pin
Hard epoxy at one corner, 
this end only.
L
Benching pins
2Align the scale by placing the edges against the benching pins.
MicroE Systems
Page 8