The Rubble Master RM 120X sets new standards in mobile asphalt recycling. The crushing plant has been operating on German construction sites for weeks and demonstrates what compact dimensions mean with maximum throughput performance. The machine is presented by dealer Christophel, who is positioning the system specifically for road construction and recycling companies.
Technical Data: Compact, Mobile, Powerful
The RM 120X is a mobile impact crusher on tracked chassis. The operating weight is around 32 tons, the transport width is 2.55 meters. This means: The system can be moved on a standard low-bed trailer without special permits. The feed height is 3.2 meters, the throughput performance reaches up to 250 tons per hour – depending on the material and desired end grain size.
The hydraulically folding feed hopper holds 5.5 cubic meters of material. The discharge belt is adjustable in height and can be swiveled 180 degrees. This allows material to be dumped directly onto stockpiles or into silos. Those who feed with a wheel loader save time and downtime. The machine operates with a diesel engine that meets the EU Stage V standard.
Asphalt Recycling: Where the RM 120X Shows Its Strengths
Asphalt recycling is the primary application area of the RM 120X. Milled material from road construction sites is crushed on-site and can be used as a base layer or for reprocessing. This saves landfill costs and reduces the need for new material. On a typical highway construction site, up to 2,000 tons of milled material accumulates per kilometer. Those who process the material on-site save an average of 15 to 20 euros per ton – calculated against transport and repurchase.
The machine processes asphalt chunks up to an edge length of 600 millimeters. The end product can be adjusted via the gap width: everything from 0 to 80 millimeters is possible. For use in road construction, grain sizes between 0 and 32 millimeters are usually required. The RM 120X delivers this fraction in one pass. A downstream screening plant is only necessary for higher quality requirements.
Practical Use: What Christophel Reports
Dealer Christophel uses the RM 120X on road construction sites in southern Germany. An example: A district road is being renovated over 8 kilometers. The resulting milled material amounts to approximately 12,000 tons. With the RM 120X, the material is crushed directly next to the construction site and reused as a base layer. The crushing plant achieves approximately 180 tons per hour in this application. This means: The entire material is processed in approximately 65 operating hours.
The effort for transport and setup is about 4 hours. The machine requires a space of approximately 15 by 20 meters. One person operates the system, a second feeds it with the wheel loader. Diesel consumption is approximately 18 liters per hour. At a diesel price of 1.50 euros, that's 27 euros in fuel costs per operating hour. Add to this maintenance, wear parts and operator costs – in total, Christophel calculates approximately 80 euros per operating hour including logistics.
Profitability: When Does the Investment Pay Off?
The RM 120X costs approximately 420,000 euros in basic configuration. For companies that regularly handle recycling contracts, the system pays for itself quickly. A calculation example: A mid-sized road construction company processes approximately 25,000 tons of asphalt milling material per year. Without its own crushing plant, landfill costs of approximately 12 euros per ton plus new delivery of base layer material for approximately 18 euros per ton are incurred – a total of 30 euros per ton or 750,000 euros per year.
With the RM 120X, costs are reduced to the pure operating costs of the crushing plant. At 25,000 tons and 180 tons throughput per hour, that's approximately 140 operating hours. At 80 euros per hour, that's 11,200 euros in direct costs. Even if you include capital service, insurance and depreciation, the savings are over 600,000 euros per year. The system pays for itself in less than a year.
Alternative Applications: Construction Waste, Natural Stone, Gravel
In addition to asphalt, the RM 120X also processes construction waste, natural stone and gravel. At demolition sites, the machine crushes concrete chunks up to a compressive strength of 120 MPa. The end product can be used as fill material or for road construction. The system also finds applications in gravel plants: oversized material or incorrectly sorted material is re-crushed and fed back into the production process.
Another advantage: The RM 120X operates quietly. At 103 decibels of sound power, the machine is well below the limits for urban construction sites. This opens up application possibilities in residential areas and night construction sites. For companies working in urban areas, this is a decisive advantage.
Market Environment: Mobile Crushers in Comparison
The RM 120X competes with systems from Kleemann, Metso and Sandvik. The Kleemann MR 130 EVO2 offers similar throughput performance with slightly higher dead weight. The Metso Lokotrack LT1110S scores with a larger feed opening, but is also more expensive. Rubble Master positions itself as a compact, mobile solution for smaller and medium-sized construction sites. Those who frequently change locations benefit from low transport costs.
A look at Rubble Master's overall portfolio shows: The manufacturer consistently focuses on mobility and compactness. The recently unveiled RM V550e as the first fully electric jaw crusher shows where things are heading. An electrified version of the RM 120X is also conceivable – but there are no official plans yet.
Maintenance and Wear Parts: What Operators Need to Know
Maintenance intervals are 250 operating hours for oil changes and filters. The impact plates in the crusher need to be replaced every 1,000 to 1,500 operating hours depending on the material. A set costs around 8,000 euros. The wear strips on the feed hopper last about 2,000 hours. Christophel calculates approximately 5 euros per operating hour for wear parts – a typical value in this machine class.
Access to maintenance points is well designed. Engine hood and side panels can be opened without tools. The lubrication schedule overview is located directly on the machine. For remote diagnostics, Rubble Master offers a telematics system. This allows operating hours, locations and error messages to be read in real time. The system costs around 1,200 euros extra and 30 euros monthly for data transmission.
Conclusion: Who Benefits From the RM 120X
The Rubble Master RM 120X is a well-designed mobile crushing plant for medium-sized recycling and road construction companies. The machine scores with compact dimensions, high mobility and solid throughput performance. Those who process at least 20,000 tons of material annually can expect an amortization period of less than two years. For occasional use, renting is the more economical solution – at about 3,500 to 4,000 euros per week.
Compared to larger systems, the RM 120X offers advantages in transport and flexibility. For major construction sites with more than 500 tons throughput per day, larger models such as the RM 120GO! or systems from Kleemann and Metso are the better choice. For typical road construction and recycling use in the DACH region, the RM 120X delivers exactly the performance needed – without frills, but with a clear return on investment.
