Installing The Mounting Hardware; Cabinet; Table 65: Four-Post Rack Or Cabinet Mounting Hole Locations For The M120 - Juniper M120 Hardware Manual

CHAPTER 16

Installing the Mounting Hardware

Installing the Mounting Hardware for a Front-Mount Four-Post Rack or Cabinet
Copyright © 2018, Juniper Networks, Inc.
Installing the Mounting Hardware for a Front-Mount Four-Post Rack or
Cabinet on page 119
Installing the Mounting Hardware for a Front-Mount Open-Frame Rack on page 121
Installing the Mounting Hardware for a Center-Mount Open-Frame Rack on page 123
If you are installing the router in a front-mount four-post rack or cabinet, you must first
install the large mounting shelf, followed by the small mounting shelf and then the spacer
bars on the rack. In addition, you must remove the mounting brackets from the chassis.
Table 65 on page 119 specifies the holes in which you insert cage nuts and screws to install
the mounting hardware required in a four-post or cabinet rack (an X indicates a mounting
hole location). The hole distances are relative to one of the standard U divisions on the
rack. The bottom of all mounting shelves is at 0.04 in. (0.02 U) above a U division.
Table 65: Four-Post Rack or Cabinet Mounting Hole Locations for the M120 Router
Hole Distance Above U Division
27 15.5 in. (39.4 cm)
21 12.0 in. (30.5 cm)
12 6.75 in. (17.1 cm)
6 3.25 in. (8.3 cm)
3 1.51 in. (3.8 cm)
2 0.88 in. (2.2 cm)
1 0.25 in. (0.6 cm)
To install the mounting shelves and spacer bars (see
Large
Shelf
8.86 U
6.86 U
3.86 U
1.86 U
0.86 U
0.50 U X
0.14 U
Figure 29 on page
Spacer Small
Bars Shelf
X
X
X
X
X
X
X
121):
119