RM400 Road Reclaimer

The RM400 Road Reclaimer is designed for full-depth reclamation and soil stabilization projects.

RM400 Road Reclaimer


The versatile Cat® RM400 Reclaimer/Stabilizer delivers excellent material gradation, outstanding maneuverability, and simple operation with superb visibility for excellent overall job site performance. Your toughest road rehabilitation and soil stabilization jobs have met their match.

Simple to Operate, Easy to Learn

  • Easily match machine functions with gradation specifications through the 25 cm (10 in) color touch screen displays and push button controls
  • Precise machine control is delivered through hand-wheel steering
  • Controls are ergonomically located and grouped by function for quick and easy access
  • Save time and ensure consistent depth for every cut with automatic features to exit and return to cutting depth
  • Keyless push-button engine start can add security and convenience using Operator ID codes to recall saved operator preferences and profiles upon login

Cat RM400 Road Reclaimer
Cat RM400 Road Reclaimer

Boost Performance with Enhanced Visibility

  • Standard FOPS cab with heating and air conditioning for a comfortable work environment
  • Sight lines are optimized with the full left-to-right sliding cab
  • A heated, 180º positioning air-ride suspension seat with fore and aft adjustment increases operator comfort and visibility
  • Performance and safety can be augmented with standard and optional cameras that are viewed on large, in-cab displays:
  1. Fore and aft visibility is enhanced with standard front and rear mounted cameras
  2. Visibility to each side of the machine can be supplemented with optional side mounted cameras
  3. Obstacle avoidance and gradation results can be viewed with optional cameras mounted above the front and rear mixing chamber doors

Efficient Power with Increased Mobility

  • Get 19% more power with the Cat® C9.3B engine that provides
  • 310 kW (416 hp) of power and meets regional emission standards
  • The overall machine length is 44 cm (17 in) shorter to enhance productivity and maneuverability in compact spaces
  • Maximize traction and mobility with standard, electronically controlled all-wheel drive and four steering modes:Front wheels only, rear wheels only, crab steering, and coordinated steering

Cat RM400 Road Reclaimer
Cat RM400 Road Reclaimer

Deliver Superior Mix Quality

  • Advanced electronic controls deliver ideal mix quality by keeping the rotor at the proper depth and the machine at an optimized speed
  • Manage gradation for a wide variety of materials and applications with three separate rotor speeds that can be selected while in operation
  • Easily modify material gradation by adjusting the front and rear mixing chamber doors, a simple gauge located on the LCD display keeps the operator informed of door position
  • Rear rotor chamber door float feature simplifies operation and allows operator to select desired down pressure
  • Work efficiently on a variety of reclamation and stabilization projects with three rotor options: Universal, Combination and Spade

Optional Spray Systems Deliver Precise Mix Quality

  • Water and emulsion additive systems ensure mix design specifications are met
  • Application rate of additives is accurately monitored through a computerized metering system
  • A wide range of variable flow rates can be optimized for a variety of applications:
  1. Water flow rates from 30-1900 liters per minute (8-500 gallons per minute)
  2. Emulsion flow rates from 30-946 liters per minute (8-250 gallons per minute)
  • Easily set up the spray system to deliver liquid additives according to specifications: manual or automatic, volume per m2 (yd2) or percent of material density

Cat RM400 Road Reclaimer
Cat RM400 Road Reclaimer

Easier Service, More Uptime

  • Ground level access to routine maintenance items simplifies service and improves safety
  • Auto-reversing cooling fan helps prevent debris build-up extending maintenance intervals for cleaning the cooling package
  • Rotor drive system utilizes automated bearing lubrication
  • Self-lubricating rotor chain drive is adjustment-free and eliminates routine maintenance
  • Hydraulically-actuated rotor drive clutch does not require adjustment
  • Built-in diagnostics monitor machine systems, alert the operator of performance issues and provide troubleshooting information

  • Standard Equipment
  • Optional Equipment
  • Specs
  • Docs

Standard Equipment

    • Adjustable armrests
    • Air-ride, heated suspension seat
    • Audio-ready with speakers
    • Full width sliding cab with heat and air conditioning
    • Push button start
    • Illuminated dual-side access ladders
    • High visibility retractable seat belt
    • Mini-wheel steering control
    • Multifunction propel lever
    • Steering guides
    • Color touch screen operator interface
    • Air to Air Aftercooler (ATAAC)
    • Dual element air cleaner with pre-cleaner
    • Extended life coolant with protection to -37 degrees C (-35 degrees F)
    • On-demand fan with auto-reversing function
    • Four steering modes
    • All-Wheel Drive
    • Electronic differential
    • Oil-bath brake system
    • Powertrain guard
    • 150 amp alternator
    • 24-volt charging system
    • Automotive-type fuse system
    • Remote start/charge receptacle
    • Two 1365 CCA maintenance-free batteries
    • Maintenance-free drive shafts
    • Self-lubricating roller and bearings
    • Shear disk driveline protection
    • Automatic depth control
    • Hydraulically-controlled dry clutch
    • Three rotor speeds
    • Variable volume mixing chamber
    • Grouped filters with ground level access
    • Cat Product Link™
    • Remote Flash
    • Remote access drains
    • Ports for Scheduled Oil Sampling (S·O·S)
    • Fluid level sight gauges
    • Service light receptacles
    • Toolbox
    • Back-up alarm (front and rear)
    • Front and rear facing cameras
    • Ground level emergency shutdown switches (3)
    • Horn (front and rear)
    • ROPS
    • Platform handrails and guardrails
    • Mirrors
    • Working lights (halogen or LED)

Optional Equipment

    • Additional color touch screen
    • Bio-friendly hydraulic oil
    • Water spray system
    • Emulsion spray system
    • Push bar
    • Torque limiter driveline protection
    • Rotor - Universal
    • Rotor - Combination
    • Rotor - Spade
    • Material sizing breaker bar
    • Integrated air compressor
    • Pneumatic bit removal tool
    • Additional toolbox
    • LED roading lights
    • Folding LED safety beacon
    • Folding side view cameras (2)
    • Front and rear rotor chamber door cameras



Long Name:
RM400 Road Reclaimer


Maximum Operating Weight
57682 lb / 26164 kg

Operating Specifications

Cutting/Mixing Width
96 in / 2438 mm
Maximum Cutting/Mixing Depth
20 in / 508 mm
Operating Speed
2.97 mile/h / 4.8 km/h
Maximum Travel Speed
6.8 mile/h / 11 km/h
Rotor Options
Universal, Combination, Spade
Rotor Speed - First (at 2100 Engine rpm)
108 r/min / 108 r/min
Rotor Speed - Second (at 2100 Engine rpm)
134 r/min / 134 r/min
Rotor Speed - Third (at 2100 Engine rpm)
159 r/min / 159 r/min


Gross Power
415.7 HP / 310 kW
Engine Model
Cat C9.3B


31.4 ft / 9.56 m
9.8 ft / 3 m
Maximum Height
11.5 ft / 3.5 m
Wheel Base
20.7 ft / 6.32 m
Ground Clearance
19.7 in / 500 mm

Service Refill Capacities

Fuel Tank Capacity
279 gal (US) / 1056 l