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BS78
(E)
21
L2
±
1 (0.039")
L2
±
1 (0.039")
L1
±
1 (0.039")
98 (3.859")
88 (3.465")
15
(0.591")
5-
Ø
5
25
(0.984")
25
(0.984")
Ø
7
60 (2.362")
42 (1.654")
4
N
120 (4.725")
120 (4.725")
L2
8
8
296 (11.66")
L1
96 (3.780")
-
BS78-70N (NS)
346 (13.63")
BS78-270N (NS)
BS78-320N (NS)
*
*
A
Ø
4
0
+0.05
N-M4 scale clamp mounting screw
2-M4 reference plate mounting screw
Reference
hole
Reference plate t = 2 (0.079")
Cable length 3000 (9.8 ft)
Detector head mounting screw
2-M3
x
30
Scale signal detection position
Model
*
0.01 (0.00039")
0.01 (0.00039")M
*
0.03 (0.0018")
A
25
±
0.2
(0.984"
±
0.008")
*
25
±
0.2
(0.984"
±
0.008")
*
25
±
0.2
(0.984"
±
0.008")
*
25
±
0.2
(0.984"
±
0.008")
*
2-
Ø
5
10 (0.394")
25
(0.984")
38
(1.496")
Spacer t = 2 (0.079")
16 (0.63")
25 (0.984")
Scale clamp
Ø
4
0
+0.05
4
0
+0.05
23 (0.906")
5 (0.197")
39.2
±
0.2
(1.543"
±
0.008")
14 (0.551")
19 (0.748")
6
(0.236")
4.6 (0.181")
(24.5)
(0.965")
30.5
(1.201")
9.8
±
0.2
(0.386"
±
0.008")
13.1
(0.516")
40.5 (1.59")
16 (0.63")
45.9 (1.81")
*
29.5
(1.161")
46
±
0.3
(1.811"
±
0.012")
3
(0.118")
38
±
0.2 (1.496"
±
0.008")
27.8
±
0.3 (1.094"
±
0.012")
43.5 (1.713")
6.8
(0.268")
30.5
(1.201")
13.3 (0.524")
1.4
(0.055")
21
(0.827")
5 (0.197")
13.8
(0.543")
0.4
(0.016")
38
(1.496")
12 (0.472")
(0.157"
+
0.002"
)
0
9 (0.354")
14 (0.551")
40
±
0.2 (1.575"
±
0.008")
*
BS78-
***
N/NS (measuring length 70/270/320)
Note 1:
The items marked by an asterisk indicate the machining dimensions on the mounting surface.
Note 2:
The surface roughness of the scale mounting surface is Rmax = 6.3 S (250
µ
inch).
Note 3:
The surface roughness of the detector head mounting surface is Rmax = 12.5 S (500
µ
inch).
Note 4:
“M
” ref
ers to the machine guide
.
Unit: mm (inch)