Our Products
Our offered Product range includes FOUR BALL CONTACT BEARING, Deep Groove Ball Bearing, Single Row Angular Contact Ball Bearing, double row angular contact bearing and Four Row Tapered Roller Bearing.
Four point contact ball bearings are separable bearings, in which, type QJ0000 has two piece inner ring, type QJF0000 has two piece outer rings, their contact angle are both 35. When carrying pure radial loads, each ball cotacts with rings are four point, and they are two point contact under pure axial loads. The bearings can carry axial loads in two directions and certain moment loads, and have the features of single row and double row angular contact ball bearings. They only can work normally in high speed when two point contact is formed.
Brass or aluminium solid cages are exactly suitbale for four point contact ball bearings.
APPLICATIONS
Deep groove ball bearings are commonly used in a number of applications as their simple structures and convenient using. They mainly carry radial loads, but also can carry combined loads as same as angular contact ball bearings when the radial clearance increases. They may carry pure axial loads when the speed is high and thrust ball bearings are not suitable. Comparing with other bearings, deep groove ball bearings have lower friction coefficient and higher limiting speed, but cannot carry heavy loads.
Deep groove ball bearings commonly adopt ribbon steel pressed cages, and metal machined solid cages are often for large-size deep groove ball bearings.
Deep groove ball bearings are widely used in automotives, tractors, machine tools, generators, water-pumps, agriculture machinery, textile machinery, etc.
The singlerow angular contact bearings can support the axial load in one specific direction. Its axial loading capacity depends on the contact angle. The bigger the contact angle is, the higher its axial bearing capacity is. The typical contact angle is 15, 25, and 40.
This kind of bearing is divided in two types: separable and inseparable types.
Metal solid cages are mainly used in single row angular contact ball bearings. Phenolic cloth laminated tube solid cages are usually used for high speed applications, and the maximum temperature is 120C.
The design of double row angular contact ball bearing is almost totally same as that of the single row angular contact ball bearing. However, its axial dimension is relatively small.So, the double row angular contact ball bearings can be considered to a pair of back-to-back single row bearings. It can bear axial loads in two directions as well as torques.
Double row angular contact ball bearings usually have fitting solt, the side of the raceway without fitting solt must carry main loads when bearings are in use.
Thefour-row taper roller bearingis a most common radial roll bearing. A bearing with such structure has a high bearing capacity and can bear the combined load which is mainly consisted by the radial load. Its radial loading capacity is 2.5 -3.5 times that of a single-row bearing. It can bear both very high radial and axial loads. Compared to a four-row cylindrical roller bearing, it has a relatively low speed due to the restriction of its structure.
The four-row tapered roller bearing can bear axial loads in double directions, so it can be used as a bidirectional thrust bearing.
Thefour-row tapered roller bearingsare mainly used in the working roll necks of hot or cold rolling mills, and roll neck of cogging mills. They usually clearance fit with roll necks to being mounted and dismouted conveniently.
Aball thrust bearingis a particular type of rotaryball bearing. Like other ball bearings, they permit rotation between parts, but they are designed to support a high axial load while doing this (parallel to the shaft). Higher speed applications require oil lubrication. Generally, they are composed of two washers (raceways) which may be grooved the rolling balls elements which are typically caged. As opposed to roller thrust bearings, ball thrust bearings can generally operate at higher speeds but at lower loads.
Some important factors when selecting thrust bearings from AST:
AST provides thrust ball bearings in two series:
A cylindrical rollerthrust bearingis a particular type ofroller bearing. Like other roller bearings, they permit rotation between parts, but they are designed to support a high axial load while doing this (parallel to the shaft). Higher speed applications require oil lubrication. Generally, they are composed of two washers (raceways) and the cylindrical roller elements which are typically caged. As opposed to roller thrust bearings, ball thrust bearings can generally operate at higher speeds but at lower loads.
Some important factors when selecting a cylindrical roller thrust bearings from AST:
ASTs cylindrical roller thrust bearings currently start with bore sizes from 45 mm and go up to 360 mm with outer diameters from 64 mm to 440 mm. Let us know if you need sizes outside these dimensions.
APPLICATIONS
The double-row taper roller bearing is mainly used to support the combined load which is mianly consisted of radial load. It can restrict the axial displacement of the shaft or housing in the two directions and thus can be used as a bidirectional locating bearing.
Double row taper roller bearings have a small number of parts and high stiffness, and are easy to be mounted and dismounted, therefore, they are usually used in the applications with changes loads, such as decelerators and coiling machines. The radial and axial clearance can be adjusted by changing the width of spacer between two inner rings.
Single row tapered roller bearings primarily carry combined loads which is main in radial, and tapered roller bearings with large tapered angle (27-30) primarily carry combined loads which is main in axial but nor pure axial loads. These bearings can limit axial displacement of shafts or housings in one direction. The inner and outer rings can be mounted respectively as separable structure, the other rings are interchangeable, and they are easy to mounted and dismounted. The radial and axial clearance can be adjusted during mounting or working, and also can be interference mounted to crease stiffness. The clearance has great influence on bearing performance.
Tapered roller bearings are widely used in rear axle hubs of automotives, large machine tool spindles, large power decelerators, roller wheels of feed ways.
Andheri, Mumbai, Maharashtra 