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Brochure | 2013-08
Cylindrical Roller Bearings
High axial load carrying capacity due to optimized rib contact

 
Cylindrical roller bearings

Cylindrical roller bearings with optimized rib contact

Full complement INA cylindrical roller bearings + FAG cylindrical roller bearings with cages
= solutions for every application

There is nothing that cannot be improved - Schaeffler developed the TB roller to significantly increase the bearing operating life under axial load. The special torus-shaped curvature of the end faces of this roller enables loads to be distributed across a significantly greater surface area.

 
    TB Design
The curved roller end face increases the size of the contact surface and thus significantly reduces the contact pressure.
FAG cylindrical roller bearings with cages in the new TB design   INA cylindrical roller bearings with optimized rib contact    

New design and improved roller contact

 

This reduced surface pressure provides a number of benefits:

  • The permissible axial load is increased by a factor of 1.5 compared with standard bearings
  • Lower bearing temperatures, since the frictional torque under axial load is reduced by up to 50 %
  • Significantly less wear on the rollers under axial load due to improved lubricant film formation
  • Bearings have a longer operating life under axial load


 

The TB roller enables high overall equipment efficiency, new design possibilities, lower operating, and lower maintenance costs.

 

More load carrying capacity – less friction
Compared with standard bearings, INA and FAG cylindrical roller bearings in the TB design can be operated at significantly higher speeds under increasing axial loads.

 

FAG large-size bearings with cages in the new TB design

 

We have completely revised the bearing design for all TB series, which means the benefits of the TB roller really come into their own. FAG cylindrical roller bearings with cages in the TB design are available with the proven split M1 cage guided by rolling elements or the new rib-guided single-piece MPAX cage. The dimensions and tolerances of these new bearings correspond with DIN 5412.

 
Axial load up to 60 % of the radial load
Up to 50 % less friction under axial load
 
(1) TB roller
(2) Optimized rib contact
(3) Brass cage
 
 

Customer benefits

  • Increased axial load carrying capacity allows new bearing support concepts and design possibilities (downsizing)
  • A higher level of energy efficiency due to the reduced frictional torque
  • Lower operating costs due to reduced energy consumption
  • Increased performance while maintaining the same costs
  • Suitable for extremely high radial loads
 
The following series are already available in the TB design:
Designs Series From
bore code
From
bore diameter


N
NJ
NU
NUP
2E 48 240
22E 44 220
3E 34 170
23E 34 170
10 80 400
19 600 600
 

Rib-guided single-piece MPAX cage

 

Our single-piece MPAX solid brass cage is a further development of FAG cage types MPA and MP1A and will replace these types successively. It has greater durability with regard to shock loads and vibrations than its predecessors and is especially well suited for applications involving high loads.

 
Rib-guided single-piece MPAX cage

Advantages of the MPAX cage

  • Significantly higher rigidity in radial direction
  • Fatigue effects occur only when large forces are applied
  • Higher load carrying capacity with regard to radial centrifugal forces
  • Lower stress maximum on the pocket corner radii
 

INA cylindrical roller bearings with optimized rib contact

 

Our full-complement INA cylindrical roller bearings are true star performers when it comes to load carrying capacity and rigidity. What most people don’t know is that they support unusually high axial loads – up to 60 percent of the radial load in fact. These bearings have a significantly longer life under axial loads and also have reduced friction thanks to the improved contact between the rollers and the ribs. This is certainly an interesting combination when considering downsizing and increasing energy efficiency.

 
Axial load up to 60 % of the radial load
Up to 50 % less friction under axial load
 
(1) TB roller
(2) Optimized rib contact
 
 

Customer benefits

  • Increased axial load carrying capacity allows new bearing support concepts and design possibilities (downsizing)
  • A higher level of energy efficiency due to the reduced frictional torque
  • Lower operating costs due to reduced energy consumption
  • Suitable for extremely high radial loads
 
The following series are already available in the TB design:
Series Dimension
series
From
bore code
From
bore diameter
LSL 19
ZSL 19
23
23
18
18
90
90
SL 19 23 18 90


SL 18
18
22
28
29
30
50
92
28
600
60
36
36
460
140
600
300
180
180