Installing The T640 Router Mounting Hardware; Installing The T640 Mounting Hardware For A Four-Post Rack Or Cabinet; Table 39: T640 Four-Post Or Cabinet Rack Mounting Hole Locations - Juniper T640 Hardware Manual

CHAPTER 7
Installing the T640 Router Mounting
Hardware

Installing the T640 Mounting Hardware for a Four-Post Rack or Cabinet

Copyright © 2013, Juniper Networks, Inc.
Installing the T640 Mounting Hardware for a Four-Post Rack or Cabinet on page 93
Installing the T640 Mounting Hardware for an Open-Frame Rack on page 96
To prepare to install the T640 router into a four-post rack or cabinet:
Install cage nuts, if needed.
Install the large mounting shelf and the spacer bars on the front rack rail.
Install the small mounting shelf on the rear rack rail.
Remove the center-mounting brackets from the chassis.
The mounting brackets and flanges have holes for rack-mounting screws, spaced at
5.25 in. (13.34 cm).
Table 39 on page 93 specifies the holes in which you insert mounting screws (an X
indicates a mounting hole location), and cage nuts if needed. 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 39: T640 Four-Post or Cabinet Rack Mounting Hole Locations

Hole Distance Above U Division
60 34.75 in. (88.3 cm)
51 29.51 in. (74.9 cm)
42 24.26 in. (61.6 cm)
33 19.01 in. (48.3 cm)
24 13.76 in. (34.9 cm)
Large
Shelf
19.86 U
16.86 U
13.86 U
10.86 U
7.86 U
Spacer Small
Bars Shelf
X
X
X
X
X
93