FAG deep groove ball bearings are available in single row and double row designs.
FAG single row bearings are particularly suitable where:
- high and very high speeds are required
- the bearing arrangement must be operated with very low friction
- very low running noise is required, without reducing the speed, load carrying capacity and operating life of the bearing (Generation C)
- high demands are made on the sealing of the bearing, without increasing heat generation or limiting the speed (Generation C)
- the bearing position is to be designed particularly economically
FAG double row bearings can be considered for bearing arrangements where:
- the load carrying capacity of single row deep groove ball bearings is no longer sufficient
- axial loads in both directions and/or tilting moments must be supported in addition to radial loads
- a high load carrying capacity is required and the design envelope available in a radial and axial direction is relatively small
C = bearings of Generation C
MR = frictional torque
nG = limiting speed
FAG deep groove ball bearing design
FAG single row deep groove ball bearings are available as:
- standard bearings
- bearings of Generation C
- matched bearing sets
- corrosion-resistant bearings
FAG double row deep groove ball bearings are available as:
- standard bearings
FAG standard bearings
FAG single row deep groove ball bearings are self-retaining units, which are part of the group of radial ball bearings. The solid outer and inner rings have deep raceway grooves, with shoulders which are not generally interrupted by filling slots. Solid cages made from polyamide PA66 or brass, and sheet metal cages made from steel or brass, are used as standard cages. FAG bearings are open or sealed. Due to the manufacturing processes used, open bearings, which are also available as sealed versions, can have turned recesses in the outer and inner ring for sealing washers or sealing shields.
FAG single row deep groove ball bearings are particularly versatile, robust in operation, easy to maintain and very economical. Due to their significant advantages, they are the most widely used rolling bearings worldwide. As a result, Schaeffler also manufactures these bearings in a large number of sizes and designs.
Fr = radial load
Fa = axial load
1 Open
2 Sealing shield on both sides (non-contact)
3 Contact seal on both sides
FAG deep groove ball bearings of Generation C
Gen. C = optimised design of standard bearings
FAG deep groove ball bearings of Generation C correspond in their structure to single row standard deep groove ball bearings, but are specially optimised in relation to:
- significantly quieter running
- even more effective sealing
- a further reduction in the already very low frictional torque
Measures to reduce noise
Schaeffler has analysed the causes of noise generation in deep groove ball bearings using the most advanced methods. On the basis of the findings obtained from these analyses:
- The surface of the raceways has been improved
- The ball quality has been increased
- Osculation has been optimised
- The production tolerances have been reduced
- Deep groove ball bearings have been fitted with new riveted cages made from steel
The result of this is a noise reduction in Generation C bearings over comparable standard FAG deep groove ball bearings.
Gen. C = particularly high sealing effect due to new and improved seals
The quality of the seal, together with the rating life, has a considerable influence on the efficiency of a rolling bearing. As a result, the seal must not only protect the running system reliably against contamination, the ingress of moisture and the loss of grease, but also ensure that the total frictional torque and heat generation in the bearing remains low despite the high sealing action. The new sealing shields, non-contact seals and contact seals of Generation C deep groove ball bearings (suffixes Z, BRS, HRS, ELS), demonstrate the success of Schaeffler in performing this difficult technical step effectively.
Gen. C = technical and economical advantages of very low friction
Electric motors, electrical machinery, washing machines, ventilators and electric tools are the preferred application areas of FAG single row deep groove ball bearings. However, in order to facilitate further increases in the efficiency of these motors, machines and tools, the power loss occurring in the bearing arrangements must be reduced. The above-mentioned measures for reducing noise also resulted, for example, in an approximate reduction in friction of 35%, giving the designer a range of application-specific advantages:
- lower heat generation
- a longer grease operating life
- higher possible speeds
- a longer bearing operating life
- a reduced energy consumption
- lower energy costs
- lower overall cost of the bearing position
Gen. C = a leading player among single row deep groove ball bearings
In summary, this means that, in addition to their technical advantages, bearing positions with deep groove ball bearings of Generation C are also considerably more economical than bearing arrangements with single row standard deep groove ball bearings. Generation C is available in series 60, 62 and 63.
1 Open
2 Sealing shield on both sides (suffix 2Z)
3 Non-contact seal on both sides (suffix 2BRS)
1 Contact seal on both sides (suffix 2HRS)
2 Contact seal on both sides (suffix 2ELS)
FAG matched bearing sets
Bearing sets in O, X or tandem arrangements
If the load carrying capacity of a FAG single bearing is not sufficient, or the shaft is to be guided axially in both directions with a defined clearance, FAG single row standard deep groove ball bearings are also available as matched bearing sets
As the arrangement of the bearing pairs is specific to the application, Schaeffler supplies bearing sets by agreement.
Fr = radial load
Fa = axial load
1 Set in O arrangement
2 Set in X arrangement
3 Set in tandem arrangement
FAG corrosion-resistant bearings
FAG corrosion-resistant bearings are suitable where particular requirements for anti-corrosion protection are present. Schaeffler supplies deep groove ball bearings of this type in open and sealed designs.
The load carrying capacity for bearings made from corrosion-resistant steel is slightly lower than for bearings made from rolling bearing steel.
FAG double row deep groove ball bearings
FAG double row deep groove ball bearings of series 42 and 43 correspond in their structure and function to FAG single row deep groove ball bearings arranged in pairs. They have deep raceway grooves in the outer ring and a narrow osculation between the raceway grooves and balls. However, they are slightly narrower than two single row deep groove ball bearings of the series 62 and 63 with the same bore and outside diameter.
Fr = radial load
Fa = axial load
