Chapter 5 Installing The M120 Router Mounting Hardware; Cabinet; Table 19: Four-Post Rack Or Cabinet Mounting Hole Locations For The M120 Router - Juniper Networks Hardware Manual

CHAPTER 5
Installing the M120 Router Mounting
Hardware
Installing the Mounting Hardware for a Front-Mount Four-Post Rack or Cabinet
Copyright © 2010, Juniper Networks, Inc.
All manuals and user guides at all-guides.com
Installing the Mounting Hardware for a Front-Mount Four-Post Rack or
Cabinet on page 49
Installing the Mounting Hardware for a Front-Mount Open-Frame Rack on page 51
Installing the Mounting Hardware for a Center-Mount Open-Frame Rack on page 53
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 19 on page 49 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
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 19: 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)
indicates a mounting
X
Large Spacer
Shelf Bars
8.86 U X
6.86 U X
3.86 U
X
1.86 U
X
0.86 U
0.50 U
X
0.14 U
Small
Shelf
X
X
X
49