Rosco RA-400 Spray Patcher

One RA-400 Spray Patcher is capable of repairing more than 200 potholes in a single day

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One RA-400 Spray Patcher is capable of repairing more than 200 potholes in a single day.

  • Requires a single operator to make pothole repairs, and the employee never has to leave the safety of the truck cab
  • Powered by a Kubota Tier 4 Final 65-hp diesel auxiliary engine
  • The RA-400’s telescoping delivery boom extends and retracts to perform a four-step spray injection process that the operator controls with a joystick
  • First, a hydraulically driven, high-volume blower cleans the pothole
  • Second, a tack coat of emulsion is applied to the area
  • Third, a mixture of aggregate and hot emulsion fills the pothole
  • Fourth, a finish coat of dry aggregate is applied
  • The whole process takes about a minute, so arterial road or residential street closures aren’t necessary. The patch is immediately ready for traffic flow
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