Analysis of Dynamic Characteristics of Grease-Lubricated Tapered Roller Bearings

Table 1

Geometry, material and rheological parameters.

Parameter	Value
Number of rollers	17
Roller length le/mm	42.06
Roller-end sphere radius rs/mm	136.20
Diameter of roller large end dl/mm	17.85
Diameter of roller small end ds/mm	24.76
Outer contact angle/deg	15
Inner contact angle/deg	5
Flange contact angle/deg	83
Outer raceway radius/mm	99.52
Inner raceway radius/mm	78.48
Guide land clearance/mm	0.5
Guide land width/mm	4.93
Cage outer diameter/mm	205.76
Cage inner diameter/mm	196.10
Cage thickness hs/mm	5
Pocket clearance Δδ/mm	0.27
Elastic modulus of roller/race/GPa	205
Poisson’s ratio of roller/race	0.3
Elastic modulus of cage/GPa	8.3
Poisson’s ratio of cage	0.28
Grease rheological parameters (30°C)
Yield stress τy/Pa	351.8
Plastic viscosity φ/Pa·s^n	8.44
Power law exponent n	0.7196
Pressure-viscosity coefficient α/m^2·N^−11	4.662 × 10^−8