RA-400 - Patchers
About the RA-400
The ultimate output of the RA-400, which is capable of correcting over 200 road defects in a single day by a single individual, has been deployed by contractors looking to maximize productivity while finding a cost-effective patching solution. The driver operated joystick performs a four-step spray injection process typically in less than one minute per repair. Including one of the largest emulsion tanks available in the market, the RA-400 patching boom extends and retracts providing a wide patching range with minimal required maintenance.
Job Application
- Road repair
- Pothole patching
- Shoulder erosion
- Alligator cracking repair
Key Features
- One man operation
- Wide easy loading rock hopper
- Patch-on-the-go system
- Computerized material application rate control
Features
Dimensions
- Length: 28’ (8.5 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
Hydraulics
- 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)
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
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
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
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)
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
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
Patch (on the Go)
- Electric hydraulic flow control for independent operation allows patching while moving at slow speeds
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)
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
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
