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Installation drawing
Dimensions and tolerances in mm
9.9 – 10.1 *
Scale
6 ±0.25
0.25
D 2
D 1
D 3
Section A-A
* NOTE: Graduations are centered
within this dimension
NOTE: For REXT partial arc please
refer to 'Ring orientation for partial
arc applications' section.
A
Fiducial marks,
4 positions,
to aid installation
A
D 4
Nominal
Line
external
count
diameter (mm)
52 *
8 192
57 *
9 000
75
11 840
100
15 744
103
16 200
104
16 384
115
18 000
150
23 600
183
28 800
200
31 488
206
32 400
209
32 768
θ
229
36 000
255
40 000
300
47 200
350
55 040
417
65 536
* 52 mm and 57 mm rings have dimple fiducial features and no slots.
N holes Ø6
through
equispaced
Dimensions
D2
D3
N
D1
26
50
52.1 – 52.2
4
26
50
57.25 – 57.35
4
40.5
64.5
75.3 – 75.4
8
97.5
100.2 – 100.3
8
57.5
57.5
97.5
103.0 – 103.2
8
104.2 – 104.4
57.5
97.5
8
68
108
114.5 – 114.7
8
96
136
150.2 – 150.4
8
122.5
162.5
183.2 – 183.4
12
136
176
200.2 – 200.4
12
180.5
206.1 – 206.5
12
140.5
140.5
180.5
208.4 – 208.8
12
229.0 – 229.4
160.5
200.5
12
180.5
220.5
254.4 – 254.8
12
216
256
300.2 – 300.4
12
256
296
350.2 – 350.4
16
305
345
417.0 – 417.4
16
Holes
θ
D4
38
90°
38
90°
52.5
45°
77.5
45°
77.5
45°
77.5
45°
88
45°
116
45°
142.5
30°
156
30°
160.5
30°
160.5
30°
180.5
30°
200.5
30°
236
30°
276
22.5°
325
22.5°
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