FKL India Pvt Ltd Kolkata, West Bengal

Spherical Plain Bearings consists of an inner ring with sphere convex outside surface and an outer ring with a corresponding sphere, but has concave inside surface. Their design makes them suitable for bearing arrangements particularly where alignment movements between shaft and housing has to accommodate, or where oscillating or recurrent tilting movements must be permitted at relatively slow sliding speeds.

FKL provides comprehensive solution with a wide assortment of roller and ball bearings for diverse applications. The effort usually goes out to the direction to abate the downtime production and increase profitability by greater productivity. FKL split roller bearings are a solution, especially for applications where mounting and dismounting process of a bearing leads to a huge loss in productivity, which is rather time consuming. FKL manufactures split cylindrical roller bearing up to 600 mm bore diameter and split spherical roller bearings up to 1120 mm bore diameter.

A combination of the radial ball bearing and, seal and a housing of grade cast iron oppressed steel and is known as a bearing unit. These come in various shapes. The spherical nature of the outer and the internal surface helps the unit in self-aligning.

A rolling-element bearing, which is also known as a rolling bearing, carries a load by placing rolling elements (such as balls or rollers) between two bearing rings called races permitting rotation with low friction and angular misalignment. The bearing is mainly designed for high radial loads and heavy axial loads in a single direction. Typically, these bearings tend to support a rotating shaft in the bore of the shaft washer which can sometime get misaligned in respect to the housing washer. The misalignment can occur due to the spherical internal shape of the house washer.

A rolling-element bearing, which is also known as a rolling bearing, carries a load by placing rolling elements (such as balls or rollers) between two bearing rings called races permitting rotation with low friction and angular misalignment. The bearing is mainly designed for high radial loads and heavy axial loads in a single direction. Typically, these bearings tend to support a rotating shaft in the bore of the shaft washer which can sometime get misaligned in respect to the housing washer. The misalignment can occur due to the spherical internal shape of the house washer.

• Being one of the most versatile among the group of bearings these ball bearings consist of deep groove or single row radial. These are widely used ball bearings. Utilizing an uninterrupted raceway, the bearings have a close osculation with the balls; this enables the bearing to house radial loads and axial loads in both directions.
• These bearings have a low maintenance cost and a simple design. They cannot be separated and are suitable for high speed rotations, being very robust in operation.

• These bearings stay cool while functioning as they consist two rows of balls which lower the friction on the common raceway in the outer ring that helps reduce the heat. These types are ball bearings when the alignment of the shaft and the housing are difficult and the shaft may flex.
• Residing in an outer ring the bearing has a spherical raceway and its centre of curvature coincides with that of the bearing, therefore, the axis of the inner ring, balls and cage can deflect to some extent around the bearing center. The smaller contact angle lowers the axial load capacity.

• This type uniquely uses axially asymmetric races. While an axial load passes in a straight line through the bearing, a radial load takes an oblique path which tends to detach the races axially. This uniforms the angle of contact on the inner race with the outer race. Loading in both the radial and axial directions, Combined loads are better sustained by the angular contact bearings and the contact angle of the bearings should be corresponded to the relative proportions of each. Larger contact angle, usually in the range 10 to 45 degrees will raise the axial load support, but minimize the radial load. Besides, the centrifugal forces generated by the balls in high speed applications such as turbines, jet engines, and dentistry equipment changes the contact angle at the inner and outer race.
• Nowadays, ceramics such as silicon nitride are used regularly in such applications due to their low density i.e. 40% of steel. These materials significantly reduce centrifugal force and enables superior performance in high temperature environment. They are also moderately similar to that of bearing steel unlike a cracking or shattering glass or porcelain.

• A thrust bearing is a typical rotary rolling-element bearing. This bearings permits rotation between parts but are designed to support a predominant axial load. The varieties of thrust bearings are Thrust Ball Bearings, Cylindrical Thrust Roller Bearings, Taper Roller Thrust Bearings, Spherical Toller Thrust Bearing, Fluid Bearings and Magnetic Bearings.
• In most cases it is seen that the Thrust Bearings are generally used in cars as the forward gears in modern car gearboxes use helical gears which boosts the smoothness and curtails unnecessary noise. This causes axial forces and needs to be dealt with. Apart from this, Thrust Bearings are also used with radio antenna masts to cut down load on an antenna rotator. A significant citation of Thrust Bearing in an automobile is the clutch throw out bearing, also known as the clutch release bearing.

A Spherical Roller Bearing is a rolling-element bearing. This bearing permits rotation with low friction and angular misalignment. This bearing supports a rotating shaft in the bore of the inner ring, but may get misaligned with respect to the outer ring. The misalignment can be either of spherical internal shape of the outer ring or the spherical rollers.

This roller bearing completely complements cylindrical roller bearings and incorporates maximum number of rib guided cylindrical rollers. These can therefore lift up hefty radial loads; only drawback being their inability to operate at same high-speed as caged designs cylindrical roller bearings. The standard FKL range of single row also complements the semi-locating cylindrical roller bearings.

Tapered Roller Bearings are separable. The bearing comprises of outer ring, inner ring, and roller assembly and contains the rollers and a cage. While the non-separable inner ring and roller assembly is known as the cone, the outer ring is called the cup.

A rolling-element bearing, which is also known as a rolling bearing, carries a load by placing rolling elements (such as balls or rollers) between two bearing rings called races permitting rotation with low friction and angular misalignment. The bearing is mainly designed for high radial loads and heavy axial loads in a single direction. Typically, these bearings tend to support a rotating shaft in the bore of the shaft washer which can sometime get misaligned in respect to the housing washer. The misalignment can occur due to the spherical internal shape of the house washer.

Sealed Spherical Roller Bearings are designed to withstand high demanding operating conditions as well as high operating life. For end users, use of these bearings is guaranteed to simplify its maintenance, reduce grease and seal consumption, and eliminates unplanned shut downs due to premature failures of bearings. This leads to drastic reduction of operating costs thereby shooting up profits with the operation. For an OEM customer, the use of Sealed Spherical Roller Bearing implicates elimination of external seals. Here, the consequent possibility of downsizing the machine and reducing the cost will increase the products competitiveness, especially if the guaranteed trouble free operation is taken into consideration. Sealed spherical roller bearings are suitable for areas of operation with hostile environment such as dust, dirt and other contaminant or pollutant.

Sealing concepts Depending on the bearing series the sealed spherical roller bearings are fitted with different sealing concepts.

Vibratory screens are used for grading i.e. separation of solid materials by grain size of materials. Other vibratory machineries like the road rollers and saw frames are also among the machines which are subjected to severe stress. High loads, high speed, acceleration, and centrifugal forces are strongly supported by the rolling bearings in the exciter units of these machines. These applications may also involve unpleasant ecological effects such as contamination and moisture.

A needle roller bearing is a bearing which uses small cylindrical rollers. The difference between a needle roller bearing and roller bearing is the ratio of the diameter and length of rollers. Sometimes, it is also called the needle roller bearing when the diameters ratio and the length of roller of a roller bearing is between the intervals of 0.1 and 0.4. They also aid in reducing the friction of a rotating surface.

Spherical Plain Bearings consists of an inner ring with sphere convex outside surface and an outer ring with a corresponding sphere, but has concave inside surface. Their design makes them suitable for bearing arrangements particularly where alignment movements between shaft and housing has to accommodate, or where oscillating or recurrent tilting movements must be permitted at relatively slow sliding speeds.

A combination of the radial ball bearing and, seal and a housing of grade cast iron oppressed steel and is known as a bearing unit. These come in various shapes. The spherical nature of the outer and the internal surface helps the unit in self-aligning.

This roller bearing completely complements cylindrical roller bearings and incorporates maximum number of rib guided cylindrical rollers. These can therefore lift up hefty radial loads; only drawback being their inability to operate at same high-speed as caged designs cylindrical roller bearings. The standard FKL range of single row also complements the semi-locating cylindrical roller bearings.