Selection, Testing, Lubrication, and Sealing of Single Row Tapered Roller Bearings for Aerospace Wheel Applications

2010 ◽  
Author(s):  
Keyword(s):  
Single Row ◽  
Roller Bearings ◽  
Tapered Roller ◽  
Tapered Roller Bearings ◽  
Selection Testing

Adhesive Joining in Ball and Tapered Roller Bearings

2015 ◽  
Vol 791 ◽  
pp. 203-210
Author(s):  
Anna Rudawska ◽  
Grzegorz Talatycki
Keyword(s):  
Comparative Analysis ◽  
Adhesive Joints ◽  
Ball Bearings ◽  
Single Row ◽  
Roller Bearings ◽  
Tapered Roller ◽  
Tapered Roller Bearings

The article presents selected issues associated with the use of adhesive joints in the assembly of ball bearings in the gearbox housing. The aim of the study was the comparative analysis of adhesive joints strength of gear bearing housings. One series of rings, simulating the new socket fits with different parameters and different degrees of wear were used to comparison of these joints.The tests were conducted on two series of rings, to represent new housing of different fit parameters and wear variants. The three types of tested adhesives are frequently found in similar applications. The rings and two types of bearings were tested: single row ball bearings 6207Z and tapered roller bearings 30207A. The comparative analysis of tested adhesives indicates the superiority of Loctite products over Chester Molecular B36 adhesive. In tapered roller bearings Loctite 542 produced the strongest bond.

The Radial and Axial Stiffnesses of Tapered Roller Bearings Under Combined Load

1996 ◽  
Vol 118 (1) ◽  
pp. 257-263 ◽  
Author(s):  
H. Zantopulos
Keyword(s):  
Roller Bearing ◽  
Axial Loads ◽  
Tapered Roller Bearing ◽  
Single Row ◽  
Combined Load ◽  
Roller Bearings ◽  
Tapered Roller ◽  
Tapered Roller Bearings

Equations and their derivations for finding the radial and axial stiffnesses of a single-row tapered roller bearing, assuming a rigid shaft and housing, are given for any case of combined radial and axial loads. This method is extended to include the two-row bearing under certain conditions. Also presented are tables to facilitate these calculations.

scholarly journals Geometrical Optimization of the EHL Roller Face/Rib Contact for Energy Efficiency in Tapered Roller Bearings

Lubricants ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 67
Author(s):  
Sven Wirsching ◽  
Max Marian ◽  
Marcel Bartz ◽  
Thomas Stahl ◽  
Sandro Wartzack
Keyword(s):  
Energy Efficiency ◽  
Carrying Capacity ◽  
Tribological Behavior ◽  
Large Radius ◽  
Load Carrying Capacity ◽  
Statistical Design Of Experiments ◽  
Roller Bearings ◽  
Load Carrying ◽  
Tapered Roller ◽  
Tapered Roller Bearings

In the context of targeted improvements in energy efficiency, secondary rolling bearing contacts are gaining relevance. As such, the elastohydrodynamically lubricated (EHL) roller face/rib contact of tapered roller bearings significantly affects power losses. Consequently, this contribution aimed at numerical optimization of the pairing’s macro-geometric parameters. The latter were sampled by a statistical design of experiments (DoE) and the tribological behavior was predicted by means of EHL contact simulations. For each of the geometric pairings considered, a database was generated. Key target variables such as pressure, lubricant gap and friction were approximated by a meta-model of optimal prognosis (MOP) and optimization was carried out using an evolutionary algorithm (EA). It was shown that the tribological behavior was mainly determined by the basic geometric pairing and the radii while eccentricity was of subordinate role. Furthermore, there was a trade-off between high load carrying capacity and low frictional losses. Thereby, spherical or toroidal geometries on the roller end face featuring a large radius paired with a tapered rib geometry were found to be advantageous in terms of low friction. For larger lubricant film heights and load carrying capacity, spherical or toroidal roller on toroidal rib geometries with medium radii were favorable.

Tandem tapered roller bearings no-load torque loss in a rear axle gear transmission

2021 ◽  
Vol 157 ◽  
pp. 106876
Author(s):  
Justino A.O. Cruz ◽  
Pedro M.T. Marques ◽  
Jorge H.O. Seabra ◽  
Ramiro C. Martins
Keyword(s):  
Rear Axle ◽  
Gear Transmission ◽  
Load Torque ◽  
Roller Bearings ◽  
Torque Loss ◽  
Tapered Roller ◽  
Tapered Roller Bearings
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