scholarly journals BALL BEARINGS SELF-STABILIZING OIL PRESSURE BEARINGS

2021 ◽  
Vol 5 (12) ◽  
Author(s):  
Angat Singh
Keyword(s):  
Relative Motion ◽  
Machine Component ◽  
Ball Bearings

A bearing is a machine component which permits relative motion and decreases friction amongst two surfaces. Bearing is a component that supports, guides, and decreases the friction of motion between fixed and moving machine components. The term bearing is derived from the verb “to bear” it means “to support”. In this paper I have compiled and compared generic bearings with SSO bearings from “Noctua”.

scholarly journals Mathematical Modelling and Transient Thermal Analysis of Coupler-Rocker Bearing

2018 ◽  
Vol 225 ◽  
pp. 04005
Author(s):  
Abdullah Jamil ◽  
Masri B. Baharom ◽  
Tamiru Alemu Lemma
Keyword(s):  
Thermal Analysis ◽  
Mathematical Modelling ◽  
Heat Generation ◽  
Relative Motion ◽  
High Speed ◽  
Sliding Friction ◽  
Ball Bearings ◽  
Fluid Films ◽  
High Productivity ◽  
Precision Machine Tools

Friction is the resisting force between two bodies having relative motion. These bodies can be solid surfaces, fluid films or elements sliding against each other. There are many devices used to overcome sliding friction which include wheels and bearings. Ball bearings are used in many high speed and high precision machine tools because of their high productivity. A Crank-Rocker four bar mechanism consists of 4 linkages and 4 nodes. These nodes perform complex motions especially the coupler-rocker joint. In order to reduce the friction between these relatively moving links, ball bearings can be introduced. The coupler-rocker bearing oscillates about some axis as well as the raceways have some relative motion. Heat generation rate is not known for bearings performing this type of complex motion. This paper describes the mathematical modelling and thermal analysis of coupler-rocker bearing. Heat generation in the bearing can be estimated using this model. This can be countered by having proper lubrication and speed of bearing.

The restoration of blurred electron micrographs

1986 ◽  
Vol 44 ◽  
pp. 180-181
Author(s):  
Bridget Carragher ◽  
David A. Bluemke ◽  
Michael J. Potel ◽  
Robert Josephs
Keyword(s):  
Cross Section ◽  
Electron Micrographs ◽  
Relative Motion ◽  
Finite Thickness ◽  
Image Plane ◽  
Helical Axis ◽  
Thin Sections ◽  
Structural Details

We have investigated the feasibility of restoring blurred electron micrographs. Two related problems have been considered; the restoration of images blurred as a result of relative motion between the specimen and the image plane, and the restoration of images which are rotationally blurred about an axis. Micrographs taken while the specimen is drifting result in images which are blurred in the direction of motion. An example of rotational blurring arises in micrographs of thin sections of helical particles viewed in cross section. The twist of the particle within the finite thickness of the section causes the image to appear rotationally blurred about the helical axis. As a result, structural details, particularly at large distances from the helical axis, will be obscured.

Ball Bearings

1893 ◽  
Vol 36 (935supp) ◽  
pp. 14938-14940
Keyword(s):  
Ball Bearings

AISI TYPE 440B

Alloy Digest ◽  
1969 ◽  
Vol 18 (4) ◽  
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Heat Treating ◽  
Chromium Steel ◽  
Ball Bearings ◽  
High Carbon ◽  
High Chromium ◽  
Steel Mills ◽  
Aisi Type

Abstract AISI Type 440B is a hardenable high-carbon high-chromium steel recommended stainless for cutlery, valve parts, ball bearings, pivot pins, etc. This datasheet provides information on composition, physical properties, microstructure, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-223. Producer or source: Stainless steel mills.

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