Results 61 to 70 of about 278,790 (188)

Ultra-precision machining test of diamond sand belt for Si3N4 ceramic cylindrical roller

open access: yesJin'gangshi yu moliao moju gongcheng
ObjectivesSi3N4 ceramic cylindrical rollers show excellent service performance in extreme working conditions, but their hardness and brittleness and other characteristics lead to difficulties in machining.
Hongliang WANG   +5 more
doaj   +1 more source

Life Evaluation of High-speed EMU Variable Gauge Bogie Axle Box Bearing under Partial Load

open access: yes机车电传动, 2020
The life of the axle box bearing of a high-speed EMU variable gauge bogie was evaluated. The axle box bearing should take two kinds of gauge and bear partial load due to the influence of the wheel track distance, thus producing the partial load effect ...
Zhiwei ZHENG, Zhihui HUANG
doaj  

ANALYSIS ON DYNAMIC CHARACTERISTICS OF CYLINDRICAL ROLLER BEARING UNDER THE CONDITION OF ROTATIONAL SPEED FLUCTUATIONS

open access: yesJixie qiangdu, 2019
The research on the dynamic characteristics of roller bearings is mainly concentrated on steady condition, but the rotational speed fluctuations exist in many rotating machines, and it has important influence on the dynamic performance of rolling bearing.
TU WenBing   +4 more
doaj  

CONTACT STRESS AND RADIAL STIFFNESS OF A CYLINDRICAL ROLLER BEARING WITH CORRECTED ROLLER GENERATOR

open access: yes, 2016
A method has been developed to study the radial stiffness of a cylindrical roller bearing with corrected roller generator. First, the finite-length contact question of roller-race contact was solved by cutting contact surface into slices and considering
Hailiang Wang, Guanci Chen
core   +1 more source

Theoretical Research on the Radial Stiffness of Pre-Loaded Hollow Cylindrical Roller Bearings

open access: yes, 2011
For solving the problems of classical mechanics on the stiffness of hollow cylindrical roller bearings, the radial stiffness of pre-loaded hollow cylindrical roller bearings is analyzed with finite element method and the elastic deformation of inner and ...
Xiu Juan Zhang   +2 more
core   +1 more source

Some Effects of Lubricant Starvation in Cylindrical Roller Bearings [PDF]

open access: yes, 2020
Experiments on cylindrical roller bearings of 50-mm bore lubricated by an air/oil mist show that friction torque and operating temperatures are much reduced by running at low lubricant supply ...
G R Higginson, R A Hargreaves
core  

Death certificate: George Roller

open access: yes, 1924
This is a photograph of the death certificate for George Roller, deceased on 1924-07-21, filed with the Arkansas Department of Health by the Ruebel Funeral Home in Little Rock.Transcribed.
Ruebel Funeral Home (Little Rock, Ark.)
core  

Some Effects of Lubricant Starvation in Cylindrical Roller Bearings

open access: yes, 1976
Experiments on cylindrical roller bearings of 50-mm bore lubricated by an air/oil mist show that friction torque and operating temperatures are much reduced by running at low lubricant supply rates.
R. A. Hargreaves, G. R. Higginson
core   +1 more source

[News Clip: Roller Coaster]

open access: yes, 1960
Video footage from the WBAP-TV television station in Fort Worth, Texas, to accompany a news story about the new roller coaster at the Forest Park in Fort Worth.
WBAP-TV (Television station : Fort Worth, Tex.)
core   +1 more source

Study on Lubrication Characteristic of Cylindrical Roller Tripod Coupling based on Time-varying Squeeze Effect

open access: yesJixie chuandong, 2020
The motion between the cylindrical roller and the slider groove of the tripod coupling is simplified as the motion between the cylinder and the infinite plane. With consideration of the unsteady state effect and time-varying squeeze effect in the running
Yang Fuqin   +3 more
doaj  

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