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Racks installed with L-shaped EIA Mounting Flanges typically provide a clearance
of 22mm for the rail kit assembly.
Rail Kits
Rails kits are not universally designed to fit every cabinet; some are specifically
designed for Sun StorageTek cabinets. For instance, the rails designed for the Sun
StorageTek F40 cabinet are 44.5mm (1.75 in.) in height, 15.3mm (0.62 in.) thick with a
total width of 41.3mm (1.63 in.), and a total length of 710mm (28 in.). The holes line
up for easy mounting only in an F40 cabinet. Other rails are adjustable. See
FIGURE 2-7
FIGURE 2-7
Most 19" cabinets have adjustable side rails, with the front mounting flanges fixed
and the rear mounting flanges adjustable. The distance between the front mounting
flange and the rear mounting flange varies according to the distance supported by
the telescoping rail kit assembly. The thickness of the adjustable rail's body should
be equal to or less than 15.3mm (0.62 in.) with a width of about 41.3mm (1.63 in.).
This means that the bulk of the rails body fits and mounts in the space behind the
cabinet's vertical NEMA rail (mounting flange) as shown in the picture on the left in
FIGURE 2-7
Caution – Verify that the cabinet you are about to use has adjustable rear mounting
flanges. If the rear mounting flanges are not adjustable, ensure that the rail kit being
used fits the cabinet; i.e. the length fits between the cabinet's front mounting flange
and the rear mounting flange.
Accessories and rail kits may not install successfully in equipment without
adjustable rear mounting flanges.
The two main rail types are the heavy rail (p/n 314034403) and the light rail with
thinner metal (p/n 312351802).
16
Sun StorageTek 6540 Rack Ready Site Preparation and Installation Support Guide • July 2006
.
Rail Examples
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