Crushing and Screening - With Rubble Master and Red Knight 6 Ltd


Austrian based Rubble Master are leading the impact crushing world with their range of RM crushers, available from UK distributor Red Knight 6 Ltd. The range is led by the RM120X, delivering maximum efficiency and simplicity for use on a wide range of applications.

The RM120X features a range of solutions to make the life of the operator easier and safer, whilst also delivering cost benefits back to the business through intelligent management of the machine, based on the amount and type of material being crushed.

The RM Operations Assist and RM XSMART functions enable the operator to keep track of the machines performance from the excavator cab, with live updates on engine performance, fuel consumption and machines performance all clearly visible via a lighting system on the outside of the machine.

“The Rubble Master impact crushers are industry leading for a reason. Built to the most exacting standards, we have sold over 130 machines into the market in the last 5 years and those customers know they can trust the RM range to get the job done. The RM120X is the next evolution in the range. The largest of the impact crushers it also offers simplicity of use, maximum efficiency, and safety for the operator via the Operations Assist,” said Paul Donnelly, Managing Director of Red Knight 6 Ltd.

The Rubble Master range are highly mobile, versatile, and powerful machines are ideal for crushing natural rock (riverbed material, basalt, limestone, gypsum, granite) and for recycling rubble, asphalt, concrete, glass and production waste.

The range consists of 5 machines, ranging from the RM 60 to the full spec RM120X. The hallmark of all 5 crushers is simplicity and efficiency, meaning short set up times and ease of use, getting RM crushers to work quickly.


Output (material dependent)

Feed material size

Inlet opening


RM 60

Up to 80 tph

Edge length max 500mm

640 x 550mm


RM 70GO!

Up to 150 tph

Edge length max 600mm

760 x 600mm


RM 90GO!

Up to 200 tph

Edge length max 650mm

860 x 650mm


RM 100GO!

Up to 250 tph

Edge length max 750mm

950 x 700mm


RM 120X

Up to 350 tph

Edge length max 850mm

1160 x 820mm



Rubble Master have built their success on their market leading impact crushers, but their range of tracked scalping and sizing screens continue to gain traction in the market.

Run out of the RM Dungannon site, the factory sees to bring the expertise from their crushers to the range of screens. There remains close cooperation in product development between the RM headquarters in Linz and RM Dungannon, driving excellence across the ranges.

The range of scalping screens has 4 machines in total, from the incredibly compact but robust HS3500M through to the largest screen, the HS11000M. There is also an extensive range of sizing screens with both two and three deck options, depending on your requirements. The MSC8500e also offers full hybrid drive capability, allowing you to limit fuel costs. It is something that has long been a feature of the crushing machines, but the same technology has been incorporated into the screeners, another example of the two sites working closely together for the benefit of customers.

“We completed a number of deals across both ranges and the feedback remains fantastic. Customers really see the quality of the machines, from build to operation and both ranges consistently exceeded expectations,” said Paul Donnelly, Managing Director at RK6. “Efficiency of operation is key but the ability to reduce fuel costs and have a positive environmental impact is crucial. We have seen a genuine improvement across both screening ranges and our customers are benefitting from that as well,” finished Paul.

Models Compared










Screenbox surface

2743 x1220 mm

3660 x 1430 mm

4880 x 1525 mm

6100 x 1830 mm

Hopper volume





Oversize belt discharge width

1050 mm

1300 mm

1600 mm

1600 mm

Basic machine weight

17000 kg

24000 kg

35000 kg

43000 kg

Associated Businesses

  • Red Knight 6 Ltd are distributors of world leading crushers, screeners, compact recycling and most recently transportation solutions.As the appointed dealers of Rubble Master, Anaconda, Komplet and Chieftain Trailers. We prid...