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Apr 13, 1993· 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.


The speed ratio between the pinion and the girth gear is 7:1. ... vibration measurements and deflection studies of the ball mill, installation and maintenance methods, etc. A cause and effect (CE) diagram and a Pareto diagram have been used to...


Kinross Gold announced the results of the feasibility study for a planned expansion project at its Tasiast gold mine in Mauritania The study based on an optimal mill size of 38 000 metric tons per day mt/d estimates gold production during the first five years of expanded operations 2018 to 2022 at 848 000 oz/y at all-in costs of 792/oz ...


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Mill Girth Gear High Vibration. About problem of cement mills pinion vibrations casestudycement mill girth gear ball mill girth gear high vibration problem case study heliccal girth gear for cement mill back lash a case study has been conducted on the wear problem of a set of r4 thread ball mill girth gear and pinion alignmentug 28 2011high ...


Case Studies Case 1) a condition monitoring system was installed in a 2500 kW gear reducer for a ball mill. After a number of years of smooth operation an abnormal increase in vibra-tion was automatically detected by the system. Fault symptoms indicated a significant increase of bearing play, causing gear meshing problems.


Ball mill working principle,Ball Mill for beneficiation product line. the existing ball mill starting mode and the control mode is not saving, though ... when the existing ball mill force of the impact is very large, so the ball mill bearings ... voltage drop, can also cause severe tripping and other equipment failures,...


May 28, 2018· Many years ago, SPM Instrument installed a VCM system on the mill gearbox and motor. Image 1. The ball mill at Orcem Netherlands. Image 2. The gearbox, just renovated, with the shock pulse and vibration sensors. Image 3. A principal overview of the ball mill. 4 System setup. 4.1 Measuring equipment. Besides the gearbox, the electric motor and ...


Hi Observing high vibs on pressing and lifting pinion DE and NDE bearing on a ball mill. Motor and main GB drive are OK. Clear predominant gear mesh frequency is appearing in the spectrum along with harmonics and side bands. But 1st GMF is predominant. side bands with pinion speed is seen. no GG speed side band was observed Some of the vib data, spectrums and photos …


• Compare high frequency Peakvue vibration waveform data from 1A Ball Mill, measurement points PIA (pillow block, inboard, axial) and GOA (gearbox, output, axial). • Note how levels at the pillow block are significantly higher than those seen at the gearbox.


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coal mill pinion

coal mill vibration case study vibration problem in coal mill gearbox Ball Mill Girth Gear High Vibration Problem Case Study ball mill girth gear high vibration problem case study High vibrations on a ball mill AMP Maintenance Forums 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 …


Vibration technology is optimal for low frequency-related fault conditions like unbalance, loose gears and misalignment. This case study describes the condition monitoring setup and findings in a ball mill gearbox and exhaust fan.


vibration. A small relative motion between balls and raceway occurs in non-rotating ball bearings that are subject to external vibration. When the bearing isn't turning, an oil film cannot be formed to prevent ~rina~ ~mks raceway wear. Wear debris oxidizes and accelerates the wear process. Correct by isolating bearings from external vibration, and


ball mill girth gear high vibration problem case study. A cement mill had its Girth gear (which is a huge gear surrounding the mill body, and ... high vibration (up to 14 mm/s rms . ... align rotary ball mill - rock crusher and mine solution . Read more 6th …


ball mill girth gear high vibration problem case study. vibration ring gear mills samatour.fr. ball mill girth gear high vibration problem case study. ball mill girth gear high vibration problem case study. heliccal girth gear for cement mill back lash a case study has been conducted on the wear problem of a set of Contact Supplier. Get Price


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Sub-Synchronous Vibration and Compressor Rotor Instability In May 2015, a K-3603 HHP BOG compressor tripped on high-high radial vibration, exceeding trip setting 83 μm peak to peak as the compressor discharge pressure increased to 68 bars. Ahmad Fadzli; MLNG Sdn. Bhd.


VIBRATION STUDIES OF CEMENT MILL ... (5 mm/sec) on one end while its high (11 mm/sec) on the other end even though ... In this case pinion has 30 teeth and Girth gear has 210 teeth o Then as per calculations o Pinion 30 = 1 x 2 x 3 x 5, GG 210 = 1 x 2 x 3 x 5 x 7 o So common factor are 2 x 3 x 5 . 2


Oct 20, 2017· Observing high vibs on pressing and lifting pinion Drive End (DE) and Non Driven End (NDE) bearing on a ball mill. ... VIBRATION STUDIES OF CEMENT MILL. ... In this case pinion has 30 teeth and Girth gear has 210 teeth o Then as per calculations Pinion 30=1x2x3x5,GG 210=1x2x3x5x7


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ball mill gearbox vibration

Ball Mill Gearbox Problem Vibration. Ball Mill 226 rpm pinion gear amp 18 rpm bull gear. Helical gears. Clutch between gearbox amp ball mill Bull gear is 2-piece split design. TABLE 1 BALL MILL SHAFT SPEEDS, EXPECTED FORCING amp FAULT FREQUENCIES BALL MILLS, FORCING FREQUENCIES CPM SHAFT SPEEDS 1X RPM MOTOR SPEED 1,191.


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HD ENV - SPM Instrument

HD ENV. The HD ENV® vibration enveloping technology enables the detection of gear and bearing faults very early on in the damage process, making it possible to monitor the development throughout the stages closely. HD ENV is an enhancement in the way vibration data is processed and presented to the user. The unique preciseness and clarity of ...


vibration levels on the ball mill pinion support shaft bearings had increased to alarm levels. At the next available ball mill stoppage an inspection was undertaken to determine the problem in question and it was found that the pedestal shaft bearing top housing had started to work loose, resulting in the increased levels of vibration.


The drive of the ball mill consists of an induction electric motor, two-stage gearbox and the pinion gear. This pinion gear is mated with the girth gear mounted on circumference of the ball mill shell and in that way it transfers the motion from the drive to the shell, see Figure 1, taken from [1]. Figure 1. Mechanical system of a ball mill ...


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ball mill vibration problems

ball mill helical pinion gear vibration cause. ... 17 Signs of Problems with Ball Mills Quickly Remove ... The MSK SFM 3 Updated since 71713 is a compact high speed vibrating ball mill for making small quantity of powder samples at easy and fast with improved vibration design It has higher impact energy created by three dimensional movement e.g ...


Ball Mill Girth Gear High Vibration Problem Case Study. Vibration In The Ball Mills Lgd Wholesale Various High Quality Vibration Mill Products from Global Vibration Mill Suppliers and Vibration Mill Factory Importer solution for vibration in a cement ball mill Chat With Sales Vibration In Cement Mill scbm A cement mill or finish mill in North ...


Vibration technology is optimal for low frequency-related fault conditions like unbalance, loose gears and misalignment. This case study describes the condition monitoring setup and findings in a ball mill gearbox and exhaust fan.


Oct 20, 2017· VIBRATION STUDIES OF CEMENT MILL. Steps for vibration measurements. ... In this case pinion has 30 teeth and Girth gear has 210 teeth o Then as per calculations Pinion 30=1x2x3x5,GG 210=1x2x3x5x7 ... Schematic to Understand and Resolve Vibration Problems. Leave a Reply Cancel reply.


8.3.2.2 Ball mills. The ball mill is a tumbling mill that uses steel balls as the grinding media. The length of the cylindrical shell is usually 1–1.5 times the shell diameter (Figure 8.11 ). The feed can be dry, with less than 3% moisture to minimize ball …


case studies condition monitoring. Ortviken Paper Mill in Sweden, owned by SCA, produces coated publication papers, LWC and newsprint on four paper machines with an annual production capacity of 850.000 tons.