15
EDH0387En1020 — 09/18
BG Series Goniometric Cradles
7.0 —
BGM Goniometric Cradles Assembly Pattern
Stacking BG goniometric cradles either together or with other Newport
stage is easily accomplished. Below are example schematics of the
assembly patterns used. For BGM stages, these interfaces are accessed by
unscrewing and removing the upper and/or lower plates of the stages (see
dimension drawings).
NOTE
To access the interface holes of the carriage, simply move the bottom
stage to its extreme position. Two c’bored holes will be accessible from
one end of travel and the other two holes will be accessible from the
other end of travel. For example, between the BGM160 and BGM200,
use the M6 holes in a 6.14 x 3.62 (156 x 92 mm) pattern. BGS80 on
BGM120, use M4 holes in a SQR 1.89 (48 mm) pattern.
To access the mounting holes, move the bottom stage carriage to one end
of travel. The 2 x M4 c'bores on the BGM120 carriage will now be
accessible. Install the M4 SHCS, and tighten - finger-tight only. Move the
carriage to the other end of travel and access the other 2 x M4 holes (SQR
1.89 (48 mm) pattern). Install the other 2 M4 SHCS. Visually inspect the
orthogonality and tighten using an Allen wrench. Move to the previous end
of travel and tighten the two screws with an Allen wrench.
7.1
BGM120 Interfaces
3.94
(100)
SQR 1.34
(34)
SQR 1.89
(48)
1.24
(31.5)
6.14 (156)
SQR 2.48
(63)
10 HOLES C’BORED
FOR M4 SCREW
8 HOLES M4 THD
BGM120 CARRIAGE INTERFACE
AFTER REMOVING THE TOP PLATE
DIMENSIONS IN INCHES (AND MILLIMETERS)
ø.197
0
+.005
(Ø 5
H7
)
63
2.48
(63)
2 HOLES M4 THD,
DEPTH: .31 (8)
31.5
6 HOLES M4 THD,
DEPTH: .24 (6)
B
BGM120 STAGE INTERFACES
AFTER REMOVING THE BASE PLATE
ø
ø.394
0
+.006
(Ø 10
H7
)
