The RSF 820 system can be equipped with various mounting kits for floor sawing, depending on the application requirements.
Microtrenching is a further special application which today is highly in demand.








The all-rounder for various floor sawing jobs
The RSF 820 can be equipped with various mounting kits and allows the user to perform multiple cutting or grinding applications with only one basic machine. Our engineers were able to draw on 40 years of experience in the development of this fully hydraulic floor sawing system. In addition to the existing expertise, special wishes and requirements of our customers were also incorporated. The RSF 820 is particularly flexible in the configuration and positioning of the operator station. Various attachment points allow mounting on all sides of the machine. Operation and monitoring are carried out intuitively via a keypad and a joystick.
Floor Saw overview
Durable, sustainable and smart design
Often, design features that are not visible at first glance are of elementary importance for the sustainable benefit of a working machine.
The rugged frame with mounting options on all sides or the use of high-quality and durable components as well as aggregates from reputable manufacturers are examples of this. Since particular attention was paid to the dimensions, the RSF 820 has a very compact design. Of course, the machine is also equipped with the latest exhaust gas treatment. Non-productive times for maintenance work are reduced to a minimum by an optimal access to the engine and other maintenance-relevant parts. A clean-up of the air filter consumes a few seconds only, for example.
Reliability of supply first and foremost
For sure, a defect can also occur on an RSF 820. To keep downtime as short as possible, we are building up a close-knit service network. This is how we ensure the fast and reliable supply of spare parts and services.
Customized solutions?
Even the most sophisticated machine cannot cover every conceivable application. Our experienced engineers will be happy to advise you, even on site. We adapt your machine exactly to your special requirements. Whatever challenges you have, we will find a solution together.

The RSF 820 system can be equipped with various mounting kits for floor sawing, depending on the application requirements.
Microtrenching is a further special application which today is highly in demand.
OVERVIEW MOUNTING KITS:
Mounting kit standard cut TS 1500
Mounting kit green concrete SB 500
Mounting kit grooving GG 300
Mounting kit longitudinal cut DB 550
Slurry extraction plant VD 500
Here you can download the Floor Saw System catalogue.
The rotating brush (rotates in reverse direction), raises loose material from inside of the joint, such as slurry or small stones, to the front. The result is a largely dust-free joint, which forms the basis for the durability of the sealing compound to be poured into the joint in the next step.
The RSB 120 is equipped with a two-stage air filter which effectively prevents the penetration of dust into the motor. The filter cartridge can be replaced without tools.Microtrenching is a minimal-destructive and very fast method of laying communication cables in existing traffic areas. In the process, wide joints are cut into the surfaces with diamond blades. Directly after the cut, ductworks are inserted and then the joint is potted. Time and cost-intensive earthworks at the edge of the traffic areas are thus avoided or minimized.
With microtrenching machines based on the new fully hydraulic RSF 820 floor saw, RELLOK provides the necessary special equipment for the application of this future-oriented cable laying technology.
With grinding and grooving, defined textures and groove profiles are made into the surface. Regardless of the given road surface, the grinding profile must always be the same depth. This is the only way to ensure the desired function (e.g. water drainage) throughout. With bump cutting, no groove profile is created, but a new road surface is created by grinding. With RELLOK bump cutters this is achieved as follows:

The front wheels are arranged in line with the grinding shaft. Depending on the desired grinding depth, the shaft is lowered below the level of the front wheels and fixed. During the work process, the front wheels and thus the grinding shaft follow the existing road structure exactly. The grinding depth remains constant.

With bump cutting, the front wheels are mounted at a greater distance in front of the grinding shaft. Due to the long lever arm, the road surface no longer has any relevant influence on the vertical movement of the cutting shaft. The road surface is grinded down to the preset depth and bumps are removed. Depending on the design of the bump cutter, this function is already integrated or can be achieved with a corresponding attachment frame.
Surface grinding using a shaft setting without spacers is also called bump cutting. This smooths out any unevenness that may arise in the manufacturing process or as a result of surface wear. By inclining the grinding shaft, the method can also be used to adjust small height differences (edges) between surfaces.

The cutting of grooves to drain water in traffic areas is called grooving. In addition to roads, this method is also used on air traffic areas. In addition to the improved drainage of flowing water, the road surface also dries faster due to the enlarged surface.

Grinding is used to produce a defined roughness of the surface in order to ensure the “grip” required for vehicles. Another application is the so-called acoustic grinding. Here, the shaft-saw blade configuration is chosen so that a special grinding pattern is created to reduce road noise.
