Nilos rings: sealing solutions for bearing

NILOS RINGS

Nilos rings provide sealing and protection against dirt and foreign particles to the bearings in all applications and operating conditions. Nilos rings can be implemented on all kinds of bearings according to their particular design.

Need of Nilos Rings:

Bearing is a machine element that constrains relative motion to only the desired motion, and reduces friction between moving parts mostly shafts. Bearings serve the versatile range of applications in almost all the sectors of manufacturing and automation. Hence there is a huge chance that it will come in contact with dirt and dust which will start the incursion in to bearing, affecting the life and efficiency of the bearing.

Fig. Nilos rings assembled with the bearing. (AV, JV)

Few applications may have a chance of getting in contact with liquids and abrasive elements and hence to secure the bearing from all this, good quality sealing is required. Nilos Ring provides the perfect solution for all types of sealing. The design and specification of the nilos rings depends upon the dimensions of the bearing and its type.

Few common categories of Nilos rings are as follows.

AV and JV: (Ball Bearings)

To seal the Ball type roller bearing the AV and JV nilos rings are used to secure the outer and inner side of the bearing respectively.

The outer ring of the ball bearing is protected with the AV nilos ring when fitted with the exact specification and dimensions of the bearing. For AV the clearance is given from the outer side. General parameters in the selection of the nilos ring are the outer and inner diameter of the bearing along with the height and speed at which the bearing is designed to rotate.

 

Fig. AV and JV type nilos rings

ZAV and ZJV: when the nilos rigs are provided to the bearing where the seal or shield is already given by the manufacturer and still there is a chance of the seal to fail in extreme conditions the ZAV and ZJV type of nilos rings are used.

Fig. ZAV and ZJV type of Nilos rings.

AV, JV, AK: Tapered roller bearing

Similar kind of nilos rings are used to protect the tapered roller bearing in its outer and inner ring surface. As the shape and specification for the tapered bearing is different the new type of nilos ring is introduced known as AK ring. AK has two surfaces to get the complete better grip.

Fig. AV, JV and AK type of nilos rings

LSTO and LSTL:

            For some special purpose application where the dirt and dust can intrude the bearings affect the life of the bearing and also increase the maintenance of the machine LSTO and LSTL type of rings are used.

LSTO is used to provide the protection from the dust as well as supports to compensate the axial load coming on the bearing. The vibration damping property of the LSTO and LSTL make it more suitable for the critical and high speed applications as well as it is easy to attach the LSTO / LSTL type of nilos rings. LSTL type of nilos ring has the inner seal to stop any liquid or lubricant to escape or enter into the bearing.

Fig. LSTO and LSTL type of nilos rings