Chassis
Dimensions
|
|
Height
|
38.5 in.
(97.8 cm)
|
Width
|
17.5 in.
(44.5 cm) 18.9 in. (48.0 cm) mounting rail flange, outside to outside
|
Depth
|
36.6 in.
(93.0 cm) without cosmetics40.5 in. (102.9 cm) with full cosmetics
|
Chassis
Weight
|
|
Chassis
shipping weight
|
418.3 lb.
(189.7 kg) chassis with shipping crate and pallet330.8 lb. (138 kg) chassis
with fans, PDUs, and blanks (as shipped)
|
Chassis
with all cards and power modules, no cosmetics
|
600 lb.
(272.2 kg)
|
Chassis,
fully loaded with line cards and full cosmetics
|
650 lb.
(294.8 kg)
|
Equipment
Rack Specifications
|
|
Rack
Dimensions
|
|
Height
|
Available
aperture in rack for two chassis in a single rack:
|
Width
|
Vertical
posts:
- 19.5 in. (49.5 cm) inside-to-inside
minimum
- 23.6 in.
(60.0 cm) outside-to-outside maximum
|
Depth
|
Exterior of
four-post rack:
- Optimal:
27 in. (68.6 cm), for best access to mounting hardware
-
Optional: 30, 36, or 42 in. (76.2, 91.4, or 106.7 cm) and other standard depths
allowed, allow less space for cable management
|
Equipment
Rack Specifications (continued)
|
Load
(weight) rating
|
The rack
must support the following weights and specifications:
- 650 lb.
(294.8 kg) single chassis with full cosmetics
- 1300 lb.
(589.7 kg) two chassis, each with full cosmetics
- 95 lb.
(43.0 kg) or more for each chassis for cabling
-
Additional weight of other components in rack
Note
| ANSI
specification T1.336 (2003), which defines static load and safety margins,
recommends that racks be designed to support at least two times the anticipated
load.
|
Note
| See ANSI
specification T1.329 (2002) for dynamic load requirements and earthquake
resistance specifications.
|
|
Chassis and
rack footprint(floor contact area)
|
5.9 sq. ft.
(0.55 sq. m), 23.6 in. rack width by 36 in. chassis depth
(60 cm rack
width by 91.4 cm chassis depth)
|
Maximum
floor loading
|
600 lb/4.5
sq. ft. = 133 lb/sq. ft. (without cosmetics)272.2 kg/4134.2 sq. cm = 0.07
kg/sq. cm
650 lb/4.9
sq. ft. = 132.7 lb/sq. ft. (with cosmetics)294.8 kg/4580.1 sq. cm = 0.06 kg/sq.
cm
Note
| Be sure
to include the weight of the rack when you consider floor loading requirements.
The above numbers do not include rack weight.
|
|
Rack
Anchoring
|
|
General
considerations
|
- The rack
must be bolted to the floor. For more information, see the
Cisco
CRS Carrier Routing System 8-Slot Line Card Chassis Enhanced Router Unpacking,
Moving, and Securing Guide.
- Consider
floor and overhead anchoring requirements for the site, and size and load
capacity of anchors and floor structure.
- Make
sure that floor mounting bolts are accessible, especially if annual retorquing
of bolts is required.
|
Floor
mounting holes
|
-
Outrigger L-brackets: Depends on chosen rack
- Internal
frame holes: Depends on chosen rack
|
Chassis
Clearances
|
|
Two chassis
in a single rack
|
0.5-in.
(1.27 cm) between chassis for horizontal shelf brackets
|
Front and
rear of chassis
|
40.4-in.
(102.6 cm) for chassis installation36-in. (91.4 cm) for service access and
airflow
|
Inlet and
exhaust openings on chassis and power modules
|
6-in. (15.2
cm)
|
Top of
chassis
|
No overhead
clearance for a single chassis. Two chassis in a rack requires 0.5-inch (1.27
cm) between chassis for mounting rails.
|
Mounting
Rails and Hardware
|
|
Rail
openings (aperture)
|
- 17.75
in. (45.1 cm), side to side
- 22.8 in.
(57.9 cm), front to back (adjustable or fixed)
|
Horizontal
mounting rails
|
The
equipment rack should contain horizontal mounting rails to place the chassis
on. The mounting rails, which must be able to hold at least 650 lb (294.8 kg),
support the weight of the chassis.
- A set of
brackets is included in the chassis installation kit, which is available as an
option (CRS-8-INSTALL-KT=). Install these brackets and place the chassis on
them. For details, see the
Cisco
CRS Carrier Routing System 8-Slot Line Card Chassis Enhanced Router Unpacking,
Moving, and Securing Guide.
Note
| In
addition to supporting the chassis, the mounting rails are also designed to
space adjustable rack rails at 22.8-inches (front to back) for chassis
installation.
|
|
Mounting
holes
|
EIA
standard mounting-hole spacing:
-
18.25-inches to 18.31-inches (46.36 to 46.51 cm), center-to-center horizontal
spacing
- 0.5 +
0.625 + 0.625-inches (1.27 + 1.59 + 1.59 cm),vertical-hole-spacing pattern;
repeats on 1.75-inch (4.45 cm) pitch ETSI racks have mounting rails with EIA
standard spacing.
|
Mounting
screws
|
- 48
screws for each chassis, 12 screws in each of 4 vertical rails, installed in
holes with tick marks
- Number
10-32 x 5/8 in. long socket head cap screws (sixty screws provided with the
chassis)
Note
| If you
plan to use mounting screws other than the ones shipped with the chassis, you
can use 10-32, 10-24, 12-24, or M5 screws. (M6 and 1/4-20 screws do not fit.)
|
|
Compliance
|
Make sure
that the rack complies with all appropriate standards for your geographical
area—for example, NEBS Seismic Zone 4 (GR-63-CORE, Sections 4.4.1 and 4.4.2).
|
Additional
Rack Considerations
|
|
Interface
cables
|
When
choosing a rack, consider cabling needs (chassis front). Allow at least 95 lb
(43.1 kg) weight for each chassis for cables.
|