Ziller GmbH & Co. KG has been producing metal seals for roller bearings, the NILOS ring, for more than 60 years. The NILOS ring is the ideal solution for your sealing problem.
NILOS-Rings are metal seals, designed to keep dirt, dust, debris and other abrasive contaminants out of ball and roller bearings.NILOS-Rings help extend bearing uptime in the harshest operating environments and industries. Precision-manufactured for robust, durability and standard, NILOS-Rings are produced from Galvanized steel, Stainless steel and Brass.Galvanized steel is especially good in environments where there are tough abrasive particles. Stainless steel is usually used in food processing environments, and other applications where water or other corrosive materials are present. Brass is used in applications where there are high concentrations of salt or other corrosive solutions.
NILOS-Rings can accommodate almost any ball, cylindrical roller, taper roller or spherical roller bearing having standard ISO dimensions.They can also be used with a range of single and double-row bearing types.They can be used as primary seals (i.e. the only seal) or secondary (additional) seals.
NILOS rings are available in a wide assortment of styles, materials and sealing configurations. In addition, there’s a Nilos ring available to fit almost any standard bearing size. The NILOS ring is a proven means to protect the bearing from contaminants that could reduce the life of the bearing.
Two basic shapes of seals AV, JV:
These two types of NILOS-Rings cover the majority of configurations used. The standard types of NILOS-Rings can be used for peripheral rotating speeds of up to 6 m/s; higher speeds must quoted without fail when ordering.
A NILOS-Ring that seals the outer roller bearing ring is described as a type AV.
Description: An “externally-sealing” NILOS-Ring for a single-row 6410 AV deep groove ball bearing is described as type “6410 AV”.
In design work the types of NILOS-Rings that seal the inner roller bearing ring should be used if at all possible. For preference, use the corresponding NILOS-Rings of type JV. Description: An “internally-sealing“ NILOS-Ring for a single-row 6410 deep groove ball bearing is described as type “6410 JV”.
The sealing of bearings that have already been provided with shields or seals is done by NILOS-Rings of other dimensions so that the seal clamped into the bearing is fully encapsulated by the NILOS-Ring. NILOS-Rings are required in particular in such cases if dirt can penetrate up to the bearing or if condensation is formed.
A NILOS-Ring that seals the outer roller bearing ring is described as a type “ZAV”.
Description:An “externally-sealing” NILOS-Ring for a single-row deep groove ball bearing 6205 with integrated shields or seals is called type “6205 ZAV”.
Preference should also be given in the design for NILOS-Rings that seal the inner roller bearing ring if possible, these are called type “ZJV”.
For preference, use the corresponding NILOS-Rings of type “ZJV”.
Description: An “internally-sealing“ NILOS-Ring for a single-row deep groove ball bearing 6205 with integrated shields or seals is called type “6205 ZJV”.
The two forms of NILOS-Ring, the AV and the JV, are produced for the bearing sides shown in the illustration. The dimensions of the sealing edge are significantly different from those for other forms due to the difference in width between the inner and outer bearing rings. They are dimensioned to guarantee to be always in place on the roller bearing ring and thus ensure that proper sealing is achieved in all cases.
A NILOS-Ring that seals the outer roller bearing ring is described a type “AV”. Description: An “externally-sealing” NILOS-Ring for a single-row 30207 taper roller bearing is described as a type “302 07 AV”.
A NILOS-Ring that seals the inner roller bearing ring is described as a type “JV”. Description: An “internally-sealing “ NILOS-Ring for a single-row 302 07 taper roller bearing is described as a type “302 07 JV”.
A second type of external seal for taper roller bearings is the NILOS-Double-Ring, here described as a type “AK” . Description: A “double externally-sealing” NILOS-Ring for a single-row 313 11 taper roller bearing is described as a type “313 11 AK”.
Sealing package comprising of steel disks are ready for installation and capable of handling thrust loads. The sealing works on a non-contact basis and can follow axial movements of the roller bearing rings to 0.3 mm without any jamming of the disc.
The type LST-L ring is a further development of the type LSTO NILOS ring. By means of an additional Viton gasket, a considerable sealing effect is achieved when in contact with liquids.
The NILOS-Ring type “LSTO” has been designed for bearing points that are subject to exceptionally high levels of dirt.
Description: A NILOS steel disk seal that is ready for installation for a roller bearing of 30 mm internal diameter and 55 mm external diameter is called in NILOS-Ring abbreviation “30 x 55 LSTO”.
The NILOS-Ring type “LST-L” is suitable where a variety of liquids is used.
Description: with the NILOS ring symbols “25 x 47” LST-L, a steel disk seal with an additional Viton gasket for a roller bearing with an inner diameter of 25 mm and an outer diameter of 47 mm, is designated.
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