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  • Gear Fault Diagnosis by Motor Current Analysis

    Gear fault diagnosis by motor current analysis – application to industrial cases Franois Combet 1 1DYNAE rue Condorcet 38090 Villefontaine France fcombetdynae Abstract The use of motor current signature analysis (MCSA) for motor fault detection such as broken rotor bar is now well established however the detection of mechanical faults related to the driven system is a more

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    Sinusoidal and Random Vibration Testing Primer

    09/04/2013The most common types of vibration testing services conducted by vibration test labs are Sinusoidal and Random This primer is an explanation of the typical requirements found in vibration test specifications and the parameters used to control the vibration tests Continue reading →

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    Maintenance and Troubleshooting of Electric Motors

    Heavy Duty Motors subjected to above normal operation and vibration (running 24 hours/day 365 days/year) Such operations as in steel mill service coal and mining machinery motor-generator sets fans pumps o Severe Duty Extremely harsh dirty motor applications Severe vibration and high ambient conditions often exist

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    ISO 10816 Vibration Severity Standards

    ISO 2372 (10816) Standards provide guidance for evaluating vibration severity in machines operating in the 10 to 200Hz (600 to 12 000 RPM) frequency range Examples of these types of machines are small direct-coupled electric motors and pumps production motors medium motors generators steam and gas turbines turbo-compressors turbo-pumps and fans

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    LONG CHANG MACHINERY CO LTD manufactures

    The 5HP motor drive with 6 speed chenges offers high torque cutting in wide range of speeds EXCLUSIVE VARI-DISC DESIGN To ensure smooth operation under hugh speed and to eliminate noise and vibration in the vertical head the vari-disc is treated with HD polymer at the inside diameter using a patented process

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    maximum vibration permissible for cement mill main drive

    maximum vibration permissible for cement mill main drive motor of 3500 kw effect of ball mill vibrations on its main drive motor Home Mill maximum vibration permissible for cement mill main drive motor of 3500 kw maximum vibration drive motor required for 100 tph cement ball mill effect of ball mill drive motor required for 100 tph cement ball mill effect of ball mill vibrations

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    jimhendershot

    CAUSES AND SOURCES OF AUDIBLE NOISE IN ELECTRIC MOTORS James R Hendershot Jr MAGNA PHYSICS DIV TRIDELTA INDUSTRIES INC 100 Homestead Ave Hillsboro OH 45133 ABSTRACT The increasing pollution caused by noise has prompted extensive efforts to either eliminate sup- press dampen or insulate the electro/magnetic and mechanical sources of acoustical disturbanc- es in electric motors

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    DC Motor Analysis

    DC motor fault zone analysis is a vital part of any DC motor maintenance program Visual inspec-tion and electrical testing of the armature and fields give the maintenance personnel an under-standing of the condition of the motor Implementing a predictive maintenance program takes a PM program to the next level We will review some case

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    DESIGN AND RESEARCH INTO THE NONLINEAR MAIN

    The structure of the double-mass high energy vibration mill is shown in Fig 1 The upper mass is Engineering Review Vol 37 Issue 1 20-26 2017 21 _____ driven by the centrifugal force which is produced by the rotating eccentric block in the vibration motor The power is passed on to the grinding cylinder which contains abrasives and stainless steel balls with the diameter of 4 6 8

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    Sinusoidal and Random Vibration Testing Primer

    09/04/2013The most common types of vibration testing services conducted by vibration test labs are Sinusoidal and Random This primer is an explanation of the typical requirements found in vibration test specifications and the parameters used to control the vibration tests Continue reading →

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    Y

    12/03/2009Is it most likely that the cause of this vibration is contained in the motor itself or is too hard to say based on information I was just wondering if most of you would switch the X and Y motors or just buy another motor for the Y to try to isolate the problem Or would your first inclination be to just adjust the gains if that worked

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    vibration

    B17 Mill Fan Motor Fan Shaft B19 Fluidor Fan E1M130 M01 Motor Only B19 Trap Fan E1M131 M01 Motor Only Motor-Drive End Vertical Vibration Trend 2 05 Gearbox Driven-End Horizontal Vibration Trend 1 02 Recommended Action Motor Gearbox Initially check the frame supporting pin for wear Correct as required If no looseness wear is found I would recommend the motor is removed and the

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    5 NOISE SOURCES

    kept constant Typical examples of solid vibration sources are eccentric loaded rotating machines panel and machine cover vibration which can radiate sound like a loudspeaker and impact induced resonant free vibration of a surface 5 2 2 Fluid Noise Air turbulence and vortices generate noise especially at high air flow velocities

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    An Analytical Approach to Solving Motor Vibration Problems

    vibration which is created by an unbalanced magnetic pull due to air gap dissymmetry and does not change with load On 2 pole motors the twice line frequency vibration level will appear to modulate over time due to it's close relationship with 2 times rotational vibration Problems in a motor such as

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    How to Determine Root Cause of Excessive Pump

    Home How to Determine Root Cause of Excessive Pump Vibration Excessive vibration is a good indicator that some damaging phenomenon could be occurring within a pump or the immediate pump system which is why many pump users monitor pump vibration on a regular basis

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    Vibration Motor

    Vibration Motor Vibration Motor is a heart of the vibratory finishing machines We have a in house design manufacturing and testing division for the vibration motors Vibration motors are available in different centrifugal force and electrical powers Unbalance vibratory motor with special tough design is us as drive

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    QdX4TM Mill Drive system

    Millmotor/drive High powered efficiency • Dual motor load sharing between two TM QdX4 Mill Drives • Low speed synchronous or induction Motor with Variable Speed Drive (VSD) • Dual motor drives are capable of – Inching and creeping – Frozen charge detection – Use of standard temperature and • vibration sensors

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    Sag Mill Syncronis Motor high axial vibration non drive

    On site we have a Sag Mill Driven by a 5500KW Motor We have a vibration issue right across the Mill The highest vibration is 30mm/sec RMS axial on the motor non drive end bearing (White metal Bearing) The gear mesh frequency is 4200 CPM The dominant frequency is 2400 CPM We can not relate this to anything on the Mill or drive train but with

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    Vibrating Screen Working Principle

    A Brief Tutorial on Machine Vibration by Victor Wowk P E Machine Dynamics Inc The purpose of this tutorial is to provide sufficient knowledge to understand machine vibration diagnosis You may be tasked with solving a vibration problem or you may be overseeing someone else and you need to understand the process This tutorial discusses the

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    Vibration

    Vibration-Assisted Grinding with a Newly Developed Rotary Mechanism using Induction Motor The tool tip is driven in a small reciprocating (1D VAM) or elliptical motion (2D VAM) whose centroid moves in the direction of the cutting velocity For appropriate combinations of cutting velocity tool amplitude and frequency the tool periodically loses contact with the chip (or leaves the

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    Energy Harvesting Strategy Using Piezoelectric Element

    morph type driven by a geared motor and a vibrator The geared motor is a type of PWM controlled device that is a combination of an oval shape cam with five gears and a speed controller When using the geared motor the piezoelectric element is size of 36L13W0 6H The output voltage characteristics of the piezo-electric element were investigated in terms of the displacement and vibration

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    Y

    12/03/2009Is it most likely that the cause of this vibration is contained in the motor itself or is too hard to say based on information I was just wondering if most of you would switch the X and Y motors or just buy another motor for the Y to try to isolate the problem Or would your first inclination be to just adjust the gains if that worked

    Get Price

    AV Products Inc

    Welcome to AV Products Inc We stock the highest quality vibration isolators including rubber mounts and machine leveling feet at the most competitive prices for immediate shipment to you Our anti vibration mounts are manufactured with high standards and superior materials to extend the life of your equipment If you need a replacement mount

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    How to Determine Root Cause of Excessive Pump

    Home How to Determine Root Cause of Excessive Pump Vibration Excessive vibration is a good indicator that some damaging phenomenon could be occurring within a pump or the immediate pump system which is why many pump users monitor pump vibration on a regular basis

    Get Price

    Sag Mill High Vibration

    On site we have a Sag Mill Driven by a 5500KW Motor We have a vibration issue right across the Mill The highest vibration is 30mm/sec RMS axial on the motor non drive end bearing (White metal Bearing) The gear mesh frequency is 4200 CPM The dominant frequency is 2400 CPM We can not relate this to anything on the Mill or drive train but with

    Get Price

    Low Noise TQLZ Series Paddy Vibration Cleaner

    Main Features of TQLZ Series Vibration Cleaner * Low noise low energy consumption stable operation *Compact structure small volume good sealing performance high productivity good cleaning effect * Driven by double-vibration motor the size of excitation force vibration direction and the screen body angle can be adjusted

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    Sinusoidal and Random Vibration Testing Primer

    09/04/2013The most common types of vibration testing services conducted by vibration test labs are Sinusoidal and Random This primer is an explanation of the typical requirements found in vibration test specifications and the parameters used to control the vibration tests Continue reading →

    Get Price

    QdX4TM Mill Drive system

    Millmotor/drive High powered efficiency • Dual motor load sharing between two TM QdX4 Mill Drives • Low speed synchronous or induction Motor with Variable Speed Drive (VSD) • Dual motor drives are capable of – Inching and creeping – Frozen charge detection – Use of standard temperature and • vibration sensors

    Get Price

    Motor Vibration Analysis Keeping it Simple

    The limits apply to a motor mounted on a seismic mass and uncoupled or coupled to a piece of equipment in a way that eliminates any vibration in the driven equipment Vibration problems can vary from a mere nuisance to an indication of imminent motor failure With a solid knowledge of motor fundamentals and vibration analysis you can usually

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    Solving problems on the tube mill

    Tube mill operators face a variety of challenges every day in their effort to produce high-quality tubing in a cost-effective and productive way This article examines some of the typical problems producers encounter some common causes of these problems and some ideas for how to solve these

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