RA-400 Performance Features

Rock Delivery: VORTEC System
1 Person Operation
Controls: Plus+1

Length: 26’ (7.9 m) with boom retracted
38’ 5” (11.7 m) with boom fully extended
Width: 8’ 6” (2.59 m)
Height: 10’ (3 m)
Weight: 18,000 lbs (8,164 kg) with standard chassis

Cab-over Peterbilt 220 (or equivalent)
GVWR: 33,000 lbs (14,969 kg)
Front axle: 12,000 lbs (5,443 kg)
Rear axle: 21,000 lbs (9,525 kg), rear springs rated for 23,000 lbs (10,433 kg)
Engine: 240 hp (179 kw) @ 2,400 rpm diesel engine
Wheelbase: 164” (4.165 m)
Cab-to-axle: 153” (3.88 m)
*Rosco to review truck specifications prior to bid and/or order

Air System:
High volume, low pressure. Positive displacement blower driven by truck hydraulics motor
Capable of 850 cfm @ 2,850 rpm
Hydraulically-driven blower with variable CFM from 0-850

Aggregate System:
Low profile, 5 cubic yard (3.82 cubic m) hopper, or 11,000 lbs (4,990 kg)
Rectangular welded 10’ 3” x 7’ (3.12 x 2.13 m) aggregate hopper
In-cab controlled vibration system
Dual electric over hydraulic activated hopper lids, rear access open/close swtich
Cab controlled adjustable, feed slide gate meters aggregate flow
System will accept aggregates up to .75” (19 mm)
Plus+1 system store settings: rock flow, emulsion flow and air flow
VORTEC: Vacuum Operated Rock Transfer Emulsion Coating system
- System utilizes no mechanical or moving parts to move aggregate
- Ease of access to clean and service the slide gate and sub systems
- Conveyors and/or paddle feeders are NOT acceptable
- Venturi nozzle with cleanout

Patch (on the Go):
Electric hydraulic flow control for independent operation allows patching while moving at slow speeds

Optional Equipment:
Back-up/reverse camera with in-cab color display
LED lights in the 30” x 60” (.76 x 1.5 m) arrow board, 13 light
Larger arrow board 48” x 96” (1.2 x 2.4 m)
LED night working light package, 2 front, 1 rear
LED lights, stop, turn signals and tail lights
240V heater conversion in lieu of 120V
Emergency triangle kit, flare, fire extinguisher
Jet flush system

Dual hydraulic pump
28 gallons per minute (105.9 l per minute) for blower function
9 gallons per minute (34 l per minute) for all other functions driven from auxiliary engine
Hydraulic tank reservoir: 20 gallons (75.7 l)

Auxiliary Engine:
Output (gross intermittent): 65 hp (48.4 kw) @ 2,600 rpm
Tier 4 Final, naturally aspirated 4 cylinder Kubota diesel engine
In-cab aux engine controls at operator’s station with tachometer, hour meter and warning system
Engine info:
- Bore: 3.43 in (87 mm)
- Stroke: 4.33 in (110 mm)
- Displacement: 159.5 cubic in (2.615 l)
- Fuel consumption: 4.54 gallons per hour (17.18 l per hour)@ max torque
- Alternator: 60 amp

Liquid Asphalt Emulsion Tank:
Insulated liquid asphalt emulsion tank
Overnight heating by two 4,500 watt, 240 volt thermostatically controlled heater elements, located in water heat exchanger tube
Alternate heat source provided to maintain heat on work site, regulated automatically to prevent over or under heating of materials
Asphalt line heated to prevent clogging during operation
Tank mounted 5” (127 mm) dial thermometer and emulsion level indicator both visible from cab
Tank size: 300 gallons (1,135.6 l)
Tank fill opening: 12” (305 mm)

Asphalt Emulsion Feed and Flush System:
Air pressurized system to deliver sufficient asphalt to completely cover aggregate at full feed capacity
Delivery system capable of maintaining 60 psi
Flush system 30 gallon (113.5 l) minimum capacity with provisions for storing used flush material
Asphalt tank is equipped with a three-way valve for flush, delivery and shut-off

Telescopic Boom:
Front-corner mount boom storage system
Eliminating windshield obstruction in stow position
One piece, double acting boom with three-stage telescoping aggregate delivery tube
Cable/hose carrier, heated water lines with individual nozzle shut-offs
Double acting swing and hoist hydraulic cylinders
Position censored safety system that does not allow boom swing into traffic beyond center line
Capable swing operations to shoulder and center with caution
Reach, retracted: 7’ 5” (2.3 m)
Reach, extended: 11’ 5” (3.5 m)
Patching area: 42 ft² (12.8 m²)

Training, Support and Company:
Training and support manuals
Optional on-site operator training by Dealer
One-year, unlimited hours warranty against any manufacturer defects
Extended warranty available
50+ years manufacturing experience
ISO 9001 Certified
Manufactured in the USA