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vibration and noise in gear of ball mill

vibration and noise in gear of ball mill

Analysis of noise and vibration during the operation

If the sound is getting louder, you need to stop the process for detailed maintenance. Sometimes the speed reducer of the ball mill will cause a lot of vibration when it drives the mill, mainly because the axis of the balance shaft of the ball mill and the reducer is not kept in a straight line.

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BALL MILL GEARBOX PROBLEM - Vibration

2019-10-30  Data from 1A shows a great amount of noise low frequency peaks, while data from 1B shows the expected vibration at the ball mill gearmeshfrequency multiples (18x rpm). Above is spectral data from both 1A 1B ball mills when loaded (ball mill pillow block bearing, inboard, axial).

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Vibration characteristics of an operating ball mill ...

2019-7-25  A ball mill, which is used to finely grind materials, causes high levels of vibration and sound during grinding operations. The vibration and sound of mills provide significant information about the internal conditions and can be used to estimate the status of the ground material. We developed a simulation model for the vibration of a mill wall to ...

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ball mill gearbox vibration - betonff.pl

In the daily production of the ball mill, there will always be some sudden failures, such as severe vibration of the ball mill gear, cracking of the large gear ring of the ball mill, or the sudden increase in the temperature of the ball mill bearing. accident.Fodamon engineers shares the reasons and solutions of the severe vibration of the ball mill pinion.

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A STUDY OF GEAR NOISE AND VIBRATION - DiVA portal

2009-1-27  A specially built test rig was used for noise testing of the different gear pairs. Noise was measured with 3 microphones and vibration was measured using 3 accelerometers attached to the gearbox housing. A further aim is to investigate the relationship between transmission error and gearbox noise.

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GEAR NOISE AND VIBRATION – A LITERATURE SURVEY

2009-1-27  GEAR NOISE AND VIBRATION – A LITERATURE SURVEY Mats Åkerblom [email protected] Volvo Construction Equipment Components AB SE–631 85 Eskilstuna, Sweden Abstract This paper is a survey of the literature on gear noise and vibration. It is divided into three parts, “Transmission error”, “Dynamic models”

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Experimental investigation of load behaviour of an ...

2009-12-1  In this work, the maximum ball load of the mill was 75 tonnes. The mill noise and vibration data were recorded during the general overhaul of the power plant and the effects of ball loads of 0 tonnes and 52 tonnes on mill noise and mill vibration were investigated. Fig. 4 shows the FFT spectra of mill noise and vibration under different ball loads.

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High vibrations on a ball mill AMP Maintenance

2011-1-21  Now, when the mill is started, vibration values are around 14 mm/s, first 4 harmonics of the GM, and then for about half an hour they go up to 28 mm/s (again 4 harmonics of GM) - in horizontal direction while in the vertical and axial direction there is no such change.

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Mathematical models used in gear dynamics—A review

2018-3-26  a gear-carrying shaft are considered in two mutually perpendicular directions, thus allowing the shaft to whirl. Insuch models, thetorsional vibration ofthesystem is usually considered. (5) ModelsforTorsionalVibrations.Themodelsin thethirdandfourth groupsconsider the flexibility ofgear teeth by including a constant or time varying mesh stiffness in the

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Vibration Analysis for Machinery Health Diagnosis

2020-5-14  Vibration is movement relative to a reference position, such as the center line of a shaft on rotating equipment Vibration is a result of an excitation force or forcing function and may be either random or periodic Vibration analysis can often pinpoint a failing element of a rotating machine in time to avoid catastrophic failure and costly

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Experimental investigation of load behaviour of an ...

2009-12-1  In this work, the maximum ball load of the mill was 75 tonnes. The mill noise and vibration data were recorded during the general overhaul of the power plant and the effects of ball loads of 0 tonnes and 52 tonnes on mill noise and mill vibration were investigated. Fig. 4 shows the FFT spectra of mill noise and vibration under different ball loads.

More

Mill Girth Gear High Vibration Problem Case Study

2021-5-16  Mill Girth Gear High Vibration Problem Case Study. A case study has been conducted on the wear problem of a set of large helical gears of a ball mill used for cement production at the shiraz cement plant the ball mill has a nominal capacity of 80 t h −1 the overall diameter and length are respectively 4000 mm and 12990 mm the total weight of the ball mill when fully charged is about 280 t.

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GEARBOX NOISE AND VIBRATION INFLUENCE OF

2009-1-27  same gear pair could significantly change the housing vibration and gearbox noise levels. Three different noise measurements are shown in Figure 4. The gearbox was disassembled and reassembled using the same parts after each measurement. The rebuild variation was sometimes the same order of magnitude as the variations obtained when testing gear ...

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Experimental analysis of charge dynamics in

2007-1-1  At higher speeds the noise level decreases significantly and so does the vibration. The amplitude of vibration beyond the critical speed is almost half compared to the mill vibration at 50% critical speed. Download : Download full-size image; Fig. 4. Variation in the intensity of vibration with mill speed (ball load = 140 kg, clay powder = 15 kg).

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Mathematical models used in gear dynamics—A review

2018-3-26  JOllmal ofSOllnd and Vibration (1988) 121(3),383-411 MATHEMATICAL MODELS USED IN GEAR DYNAMICS-A REVIEW H. NEVZAT OZGUVENt AND D. R. HOUSER Gear Dynamics and Gear Noise Research Laboratory, Department ofMechanical Engineering, TIle Ohio State University, Co/limbus, Ohio 43210, U.S.A. (Received 14 January 1987) With increased demand for high speed

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How Do I Analyze Bearings Gearbox Vibration

2014-5-1  we have Gearbox Premium make model SPL MD2-760 fitted with girth gear of cement mill and motro kw is 3150 994 rpm Girth gear is 2 years old and gearbox is new we are facing vibration in DE 7mm and NDE of input shaft is 4.5mm/s. can you tell

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91. Vibration based condition assessment of ball bearing ...

91. VIBRATION BASED CONDITION ASSESSMENT OF BALL BEARING WITH DISTRIBUTED DEFECTS. SHAM KULKARNI, ANAND BEWOOR 90 JOURNAL OF MEASUREMENTS IN ENGINEERING.JUNE 2016, VOLUME 4, ISSUE 2 various speed and load as shown in Fig. 2(a) and 2(b). The values of peak to peak amplitude for healthy bearing are observed to be at higher end than

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Vibration Analysis for Machinery Health Diagnosis

2020-5-14  line runout, broken gear tooth, sleeve bearing, resonance. Non-synchronous is not equal to any multiple of TS of the shaft and can identify problems with: rolling element defects, electrical, other components in the machine, one or more system resonances, belts, noise, cavitation, other unusual sources, background vibration, pipe,

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INTELLIGENT GEARING SYSTEM – SOLUTION TO

2009-8-26  Adding more coal to the process changes the load of the mill but the ball charge stays constant. The amount of ball charge in the mill is a function of the condition of the mill liners. The mill drive system consists of the main mill motor, the main reduction gear box, mill pinion and girth gear.

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noise - Gear Technology magazine, The Journal of

Vehicle gear noise testing is a complex and often misunderstood subject. Gear noise is really a system problem.(1) most gearing used for power transmission is enclosed in a housing and, therefore, little or no audible sound is actually heard from the gear pair.(2) The vibrations created by the gears are amplified by resonances of structural ...

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Experimental investigation of load behaviour of an ...

2009-12-1  In this work, the maximum ball load of the mill was 75 tonnes. The mill noise and vibration data were recorded during the general overhaul of the power plant and the effects of ball loads of 0 tonnes and 52 tonnes on mill noise and mill vibration were investigated. Fig. 4 shows the FFT spectra of mill noise and vibration under different ball loads.

More

Mill Girth Gear High Vibration Problem Case Study

2021-5-16  Mill Girth Gear High Vibration Problem Case Study. A case study has been conducted on the wear problem of a set of large helical gears of a ball mill used for cement production at the shiraz cement plant the ball mill has a nominal capacity of 80 t h −1 the overall diameter and length are respectively 4000 mm and 12990 mm the total weight of the ball mill when fully charged is about 280 t.

More

High vibrations on a ball mill AMP Maintenance

2011-1-21  High vibrations on a ball mill. Hello everyone, I have a problem with high levels of vibration at the supports of the pinion (fixed and floating bearings) of the cement ball mill. The kinemantic scheme with the measurement locations and several representative spectra and timewaves are in the attched file. The dominant vibrations are in the ...

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Experimental analysis of charge dynamics in

2007-1-1  At higher speeds the noise level decreases significantly and so does the vibration. The amplitude of vibration beyond the critical speed is almost half compared to the mill vibration at 50% critical speed. Download : Download full-size image; Fig. 4. Variation in the intensity of vibration with mill speed (ball load = 140 kg, clay powder = 15 kg).

More

GEARBOX NOISE AND VIBRATION INFLUENCE OF

2009-1-27  same gear pair could significantly change the housing vibration and gearbox noise levels. Three different noise measurements are shown in Figure 4. The gearbox was disassembled and reassembled using the same parts after each measurement. The rebuild variation was sometimes the same order of magnitude as the variations obtained when testing gear ...

More

Condition Monitoring of Ball Bearing Using Vibration ...

2016-4-23  The vibration analysis of ball bearing was carried out at no load, 1kg, 2kg and 4kg at 1475 rpm. Fig.1 Experimental setup VII. OBSERVATIONS a) compare to peak for healthy bearing which is shown in fig 4a. Similar to above two cases frequency spectrums were obtained for Ball bearings with inner race defect, ball

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How Do I Analyze Bearings Gearbox Vibration

2014-5-1  we have Gearbox Premium make model SPL MD2-760 fitted with girth gear of cement mill and motro kw is 3150 994 rpm Girth gear is 2 years old and gearbox is new we are facing vibration in DE 7mm and NDE of input shaft is 4.5mm/s. can you tell

More

91. Vibration based condition assessment of ball bearing ...

91. VIBRATION BASED CONDITION ASSESSMENT OF BALL BEARING WITH DISTRIBUTED DEFECTS. SHAM KULKARNI, ANAND BEWOOR 90 JOURNAL OF MEASUREMENTS IN ENGINEERING.JUNE 2016, VOLUME 4, ISSUE 2 various speed and load as shown in Fig. 2(a) and 2(b). The values of peak to peak amplitude for healthy bearing are observed to be at higher end than

More

INTELLIGENT GEARING SYSTEM – SOLUTION TO

2009-8-26  Adding more coal to the process changes the load of the mill but the ball charge stays constant. The amount of ball charge in the mill is a function of the condition of the mill liners. The mill drive system consists of the main mill motor, the main reduction gear box, mill pinion and girth gear.

More

Vibration Reduction in Mechanical and Plant Engineering

2017-9-9  Vibration-suppressing bearing for different speeds and rotations, elastic connectors Advantages: Natural frequencies from 8 Hz, full-sur-face bearing, suitable for applying to in-situ concrete Beneits: Reduces structure-borne noise and secondary airborne noise Task: Reduces the level of impact on the joints and transfer of structure-borne

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