BS78
(E)
23
L2
±
1 (0.039")
L2
±
1 (0.039")
L1
±
1 (0.039")
25
±
0.2
(0.984"
±
0.008")
∗
∗
98 (3.859")
88 (3.465")
25
(0.984")
5-
Ø
5
25
(0.984")
Ø7
60 (2.362")
42 (1.654")
2-Ø5
10 (0.394")
25
(0.984")
25 (0.984")
38
(1.496")
45.9 (1.81")
40.5 (1.59")
16 (0.63")
4
N
120 (4.725")
120 (4.725")
L2
8
8
296 (11.66")
L1
96 (3.780")
-
L3
-
-
-
BS78-70R (RS)
346 (13.63")
BS78-270R (RS)
BS78-320R (RS)
25
±
0.2
(0.984"
±
0.008")
∗
∗
25
±
0.2
(0.984"
±
0.008")
∗
25
±
0.2
(0.984"
±
0.008")
∗
Ø4
0
+0.05
Ø4
0
+0.05
4
0
+0.05
N-M4 Scale clamp mounting screw
2-M4 Reference plate mounting screw
Reference
hole
Reference plate t = 2 (0.079")
Spacer t = 2 (0.079")
Scale clamp
Cable length 3000 (9.8 ft)
Detector head
mounting screw
2-M3
×
30
Model
Scale movement
Reference point
detection direction
∗
0.03 (0.00118")A
∗
∗
0.01 (0.00039")
0.01 (0.00039")M
A
Scale single detection position
Reference point detection position
29.5
(1.161")
46
±
0.3
(1.811"
±
0.012")
3
(0.118")
38
±
0.2 (1.496"
±
0.008")
43.5
(1.713")
32.7
±
0.3
(1.287"
±
0.012")
23 (0.906")
5 (0.197")
39.2
±
0.2
(1.543"
±
0.008")
14 (0.551")
9.8
±
0.2 (0.386"
±
0.008")
13.1 (0.516")
14 (0.551")
6
(0.236")
4.6 (0.181")
30.5
(1.201")
5(0.197")
6.8
(0.268")
30.5
(1.201")
9 (0.354")
16 (0.63")
38
(1.496")
12 (0.472")
5 (0.197")
1.4
(0.055")
21
(0.827")
13.8
(0.543")
0.4
(0.016")
15
(0.591")
∗
40
±
0.2 (1.575"
±
0.008")
13.3 (0.524")
(0.157"
+
0.002"
)
0
14 (0.551")
BS78-
***
R/RS (measuring length 70/270/320)
Note 1:
The items mar
k
ed b
y an aster
isk indicate the machining dimensions on the mounting surf
ace
.
Note 2:
The surf
ace roughness of the scale mounting surf
ace is Rmax = 6.3 S (250
µ
inch).
Note 3:
The surf
ace roughness of the detector head mounting surf
ace is Rmax = 12.5 S (500
µ
inch).
Note 4:
“M”
ref
ers to the machine guide
.
Note 5:
Ref
erence point detection direction:
Standard (Scale mo
v
ement direction
→
with the head stationar
y)
Unit: mm (inch)