Roto-Mill™ RM-7
Cold Planers
Designed with input from operators and industry leaders, the updated RM-7 delivers the most complete set of standard and optional high performance features in the industry.
CMI has the most experience in the industry in providing and supporting roadbuilding equipment worldwide. All CMI equipment is designed for the lowest cost of operation and ownership and highest throughput in a variety of conditions and missions.
- Incorporates CMI’s extensive experience in milling to provide an efficient, high performance mill
- Attention to detail results in improved maintenance access and reduced service time
- Best in class conveyor capacity means less tooth wear and better productivity
- On-board diagnostics and manuals provide ease of maintenance and reduced downtime
Features
|
|
|
|
|
![]() |
||||
|
|
|
|
|

Touch Screen Control System
Standard control package features the largest (12”) high resolution, high contrast graphic control screen in the industry providing excellent visibility during day and night operation.

Cutter Drum
Full range movement lift and hinge cutter door provides efficient and easy access for tooth change out and replacement.

Conveyor Components
Catenary style suspended idlers with rubber impact rings provide for easy maintenance over fixed idler designs.

Modular System Design
Our modular control system design approach using common parts provides redundancy, reduces spares requirements and allows us to easily add additional functions and control options.

Easy Maintenance
Centralised lubrication points make regular maintainence simple while all engine fluids fill/check locations are easily reached via walkways and oil filters are easily accessible from the ground.

Easy Troubleshooting
Multiple lower level screens identify the location of problems and provide simple “smart” status codes to allow for easy maintenance and troubleshooting.
Options
Three (3) wide angle cameras mounted to provide additional visibility |
CMI REMOTE MONITORING: Cellular modem with intergration to machines CAN network, allows remote monitoring |
Canopy to cover operators station |
Moba 2D/ Topcon 2D Grade control system |
Specifications
ENGINE | |
Cummins 19L 755 hp (563 kW) @ 1800 rpm | |
Turbo charged after-cooled diesel engine, Tier 4 final | |
PROPULSION SYSTEM | |
Hydrostatic drive | |
Variable speed ground drive motors with anti-spin | |
TRACKS | |
Wide tracks with replaceable polyurethane pads, driven via planetary gearboxes | |
3 Track: 14” (356 mm) wide front and 16” (406 mm) rear | |
4 Track: 14” (356 mm) wide front and rear | |
TURNING RADIUS | |
81” (2057 mm) with 86" (2184 mm) cut | |
SPEED | |
0-3.2 mph (0-5 kph) | |
CONVEYORS | |
42” (1066 mm) wide primary and secondary conveyors | |
120º swing secondary conveyor (folding option available) | |
Full length dust covers and easy maintenance idlers | |
OPERATORS STATION | |
Right and left operators panels with dual joysticks | |
ELECTRICAL SYSTEM | |
24v system with interchangeable switch modules | |
CONTROL SYSTEM | |
Centre mounted pivoting 12” full colour LCD display | |
Backlit operators console and ground control boxes | |
Control system displays faults in plain text | |
Operators manuals retrievable on screen | |
CUTTER HOUSING | |
Belt drive from engine mounted clutch | |
Housing mounted Fairfield W-50 planetary reducer | |
Rear door lifts and pivots for increasing access | |
CUTTER | |
86” (2184 mm) wide standard cutter - optional: 103" (2616 mm) | |
48” (1219 mm) tooth tip diameter | |
14” (355 mm) maximum cut depth | |
FLUID CAPACITIES | |
Fuel: | 360 gal (1363 l) |
Hydraulic fluid: | 65 gal (246 l) |
Water: | 1100 gal (4164 l) |
DIMENSIONS & WEIGHTS | |
Shipping height: | 9’ 10” (2977 mm) |
Shipping Length: | 46’ 1” (14046 mm) |
Overall length: | 55’ 4” (16866 mm) |
Overall width: | 8’ 6” (2591 mm) |
Overall height: | 18’ 7” (5664 mm) |
3 Track: | 82,000 lbs (37195 kg) |
4 Track: | 86,000 lbs (39000 kg) |