Rack Size And Strength - Juniper MX960 Hardware Manual

Rack Size and Strength

The size, strength, and location of the rack must accommodate the router's weight and external dimensions.
The location of the rack must allow for the clearance requirements specified in
for Airflow and Hardware Maintenance for the MX960 Router" on page
The chassis is 17.37 in. (44.11 cm) wide. The router is designed for installation in a standard 19-in. rack,
as defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310-D) published
by the Electronic Components Industry Association (ECIA) (http://www.ecianow.org). The spacing of the
holes between the left and right front-mounting flanges and center-mounting brackets is 19 in. (48.3 cm)
apart. However, the inner edge of the rack rails must allow sufficient space for the width of the chassis.
With the use of adapters or approved wing devices to narrow the opening between the rails, the router
can fit into a 600-mm-wide rack, as defined in the four-part Equipment Engineering (EE); European
telecommunications standard for equipment practice (document numbers ETS 300 119-1 through 119-4)
published by the European Telecommunications Standards Institute (http://www.etsi.org).
The weight, height, and depth of the router depends on the type of cable manager installed.
With the standard cable manager installed, use these guidelines:
The rack must have sufficient vertical usable space to accomodate the height of the router:
27.75 in. (70.49 cm) high (approximately 16 U.),. You can stack three MX960 routers with the standard
cable manager in a rack that has at least 48 U (89.3 in. or 2.24 m).
NOTE: A U is the standard rack unit defined in Cabinets, Racks, Panels, and Associated
Equipment (document number EIA-310-D) published by the Electronic Components Industry
Association (ECIA) (http://www.ecianow.org).
The location of the rack must provide sufficient space to accomodate the depth of the router. The chassis
is 23.0 in. (58.42 cm) deep, but The standard cable manager extends the depth to 28.0 in. (71.1 cm).
The rack must be strong enough to support the weight of the fully configured router, up to 350 lb
(158.76 kg). If you stack three fully configured routers, it must be capable of supporting up to 1,050 lb
(476.3 kg).
With the extended cable manager installed, use these guidelines:
The rack must have sufficient vertical usable space to accomodate the additional height of the extended
cable manager: 36.5 in. (92.7 cm) high (approximately 21 U). You can stack two MX960 routers in a rack
that has at least 48 U (89.3 in. or 2.24 m).
The rack must be able to accomodate the additional depth of the extended cable manager. The chassis
with the extended cable manager installed is29.00 in. (73.7 cm) deep.
"Clearance Requirements
185.
184