Considerations concerning friction in four ball scuffing test

نویسندگان

چکیده

The paper presents some typical results regarding the evolution of friction torque during four balls scuffing tests. tests were conducted in 10 seconds running periods having 100 N loading steps, according to ISO 20623:2017. For testing, 12.7 mm bearing manufactured by SKF used and as lubricant, U90Ca3 grease was used. A special device conceived built evaluate between using a force transducer mounted on testing machine data acquisition module. correlation loading, wear scar dimensions obtained. can be determine precursory moment initiation ball test different lubricants. Some remarks concerning working parameters inter-correlation also made.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Four ball best ball 1.

In this paper a four-ball-best-ball (4BBB) model for pairs of golf players is set up. The 4BBB match-play scoring system is seen to satisfy a basic requirement of fairness. It is shown that it is not strictly possible to rate individual players as 4BBB players. However, a (reasonably broad) class of individual players is identified such that it is possible to rate them individually as 4BBB play...

متن کامل

Test Analysis of Friction Moment between Ball and Cage of Miniature Bearing at Very Low Speed

In some applications, especially for the attitude control of navigation system, the friction moment of instrument ball bearings is one of the much more important factors. Its magnitude and fluctuation affect not only the energy transfer but also the accuracy of signal transfer even though the bearings work at very low speed. Experimental analysis showed that the cage rotated with a minor fluctu...

متن کامل

Ethical considerations concerning laser medicine.

In 1996 approximately 1 million cosmetic laser treatments were performed; the estimated projection for 2000 is 3.4 million. The turnover for photoepilation systems alone has increased from 85 million dollars in 1997 to 185 million dollars in 1999 (1).There is hardly any other therapy that bears the weight of such high expectations on the part of patients and physicians; no other medical procedu...

متن کامل

A Method for Evaluating Dynamical Friction in Linear Ball Bearings

A method is proposed for evaluating the dynamical friction of linear bearings, whose motion is not perfectly linear due to some play in its internal mechanism. In this method, the moving part of a linear bearing is made to move freely, and the force acting on the moving part is measured as the inertial force given by the product of its mass and the acceleration of its centre of gravity. To eval...

متن کامل

Four tensions concerning mathematical modeling in psychology.

CONTENTS WHY SHOULD MATHEMA'IICS PI-AY A ROLE IN PSYCHOLOGY? ............................ Structure. Pattern. and Process ........................................................................................... What Keeps Mathematical Psvchology . from Being an 0.xvmoron Y ................................... FOUR DISTINCTIONS .....................................................................

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: IOP conference series

سال: 2022

ISSN: ['1757-899X', '1757-8981']

DOI: https://doi.org/10.1088/1757-899x/1262/1/012014