Depending on the working space and load ability, you can choose two sizes of the rollers - 43 and 63. Standard driving rollers - R*V series, floating rollers - R*P43 series or R*F43 series and R*F63 series for self-aligning system. For aggressive environments the rollers of stainless steel in 43 size are also available.

Possible positions of the rollers on FXR guideway.

The guideways are made of carbon alloy steel to provide the qualitative nitriding by T-RACE technology. A new hardening technology that is applied to the guideways is able to provide the surface hardness on a certain depth sufficient to provide the vibration resistance at the point of contact with the rollers, and also provide the protection against corrosion. After the nitriding rail is subjected to surface treatment by the oxide and impregnated with hot oil, which gives to the rail saturated black color, and high resistance to corrosion. The rail of NOX*FXR-P80 type is available with a step of mounting holes - 80mm for applications with the high loads.

The roller must be installed in accordance with the direction of active load, and the number of rollers should be taken into account in accordance with declared load and system durability. Basically position of the roller is chosen in a such way that the active load will be in the radial direction - C_o radial. An axial load C_o - is the smallest load in magnitude, that is perceived by roller in comparison with the radial, so the axial load acts only at the one rail circulation path, and the radial is perceived by both of circulation paths simultaneously. The rollers must be mounted on the steel plates according to screw torques that are shown in the table below.

Each of the roller fixing screws has its own size of the installation key. During the mounting of sprags by the screws it's recommended to use the spring washers to facilitate the preload adjustment before final tightening of fixing screw.

A proper lubrication of the rails and rollers provides a long service life of the system, and high efficiency. In the cases to ensure a high efficiency of the system it's recommended to clean the circulation paths and rollers, and lubricate them after 100000 cycles for example, under the normal operating conditions. A manufacturer proposes to use a lubricant for precision products - "Classe NLGI2" (ISO2137)