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MIL-S-52124B(ME)
RATIONAL BUREAU OF STANDARDS
Handbook H28 - Screw-Thread Standards for Federal Services.
(Application for copies should be addressed to the Superintendent
of Documents, Government Printing Office, Washington, D. C. 20402.)
3. REQUIREMENTS
3.l Description.  The screening unit shall consist of a pneumatic-
tired semitrailer with dolly on which is mounted electric-motor-
driven feeder assembly, feed conveyor, 3-deck vibrating screen with
four delivery chutes, all auxiliary fastenings, mountings, guards,
controls, and components necessary to form an operating assembly.
3.1.1 capacity.  The screening unit shall process a minimum of
75 tons per hour of l-1/2-inch and smaller rock aggregate produced
percent fines passing a l/4-inch screen.
3.1.2 Physical characteristics.  The physical characteristics
of the screening unit with tiny in operational condition for processing
rock, all components, attachments, accessories, equipment, and tools
shall be as specified  All measurements shall be made with the
screening unit on level ground, and the inflation pressure of the
tires shall be as recommended by the tire manufacturer for operation
at 30 mph highway speeds.  Axle loads shall be measured at the
ground under the tires.  Established component and vehicular ratings
and capacities shall not be increased to meet the requirements of
this specification.  The dolly drawbar shall be in the straight-
ahead towing position.  The minimum practicable number of components
may be removed to meet the reduducible height specified in (f). Any
sectionalization and reassembly required shall each be accomplished
in not more than 3 hours without cutting or welding.
36,000
lbs.,
max.
a
Total weight
()
16,000
ins.,
max.
Fifth wheel load limit
(b)
18,000
lbs.,
max.
Axle load limit, each axle
(c)
Overall length
600
in.,
max.
a
120
in.,
max.
Overall width
e
()
(f)
Reducible highway -transport
162 in., max.
height
Ground clearance ( SAE J894)
9.5 in., min.
(g)
9

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