Sag Mill Pinion Vibration Problems

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Vibration applications Compressor Blower Sag mill and Ball mill motor, reducer and pinion Crusher motor inner/outer pinion shaft CHARACTERISTICS OF VIBRATION Amplitude Displacement Units are mils or microns(1 micron = 0.001mm or 0.039 mils.The larger the mill, the greater are the stresses between the shells and heads and the trunnions and heads. In the early 1970s, maintenance problems related to the application of gear and pinion and large speed reducer drives on dry grinding cement mills of long length drove operators to …


Vibration data is the cornerstone of predictive intelligence. Using the award winning Emerson AMS 2140 analyzer, our technicians can provide standalone vibration route based data collection and analysis, or we can coexist with your site Team. Route based analysis provides early indications of: imbalance, misalignment, bearing, sleeve, gear and ...SAG mill product feeds two parallel ball mills of 6.6 m×11.1 m (internal diameter×length), each with a 9.7 MW twin pinion drive. The ball mills are operated at a ball charge volume of 30–32% and 78.5% critical speed. The SAG mill trommel undersize is combined with the ball mills' discharge and pumped to two parallel packs (clusters) of ...


vibration analysis on a ball mill - Mining. vibration and temparate montoring in ball mill. intelligent gearing system solution to understand and SAIMM David Brown South Africa has developed a gear monitoring system the article was done on a ball mill used in the power generation industry in South Africa include a vibration analysis on the mill pinion bearings main reduction gear box and ...SKF supplied locally manufactured mill pinion assemblies including in-house designed bearing housings as well as a Taconite sealing solution to a longstanding customer in the local grinding mill sector intended for a 22x14 ft. SAG mill at a gold project in Russia.


I thought it was the yoke. I upgraded the pinion yoke to a 1350 yoke and had Keisler send me another drive shaft with a 1350 u-joint. The problem is still there. I checked drive line angle at the rear u-joint. It seemed steep at 4 degrees so I added wedges to reduce it to 2 degrees. No change in the vibration problem when decellerating.The SAG mill consists of a center shell and 2 heads, one at each end: the feed head and the discharge head. The shell and the 2 heads consist of three sections. At the centre of the head section a trunnion is bolted. The trunnion supports the mill and the mill rotates on the trunnion. The trunnion rests on pedestals.Coarse ore from the Coarse ...


1. Removal of old Girth and Pinion Gears of Ball Mill 2B and installation of new ones 2. Removal of old SAG Mill 2 Pinion & Girth Gears plus the Shell. The mill has been in operation since 1984. The current project aims to improve reliability and availability of the SAG Mill thus expanding the grinding capacity of OTML another 30 - 40 years ...Fig. 1 shows a dynamic analysis by ODS, detecting high deflections (the red area) in the pinion bearing housing of a semi-autogenously grinding (SAG) mill. This problem occurred when the company increased the production (i.e., load) in the SAG mill. The root cause to the problem was that this mill was not designed to operate at such a high load.


xrp 1003 bowl mills gear box vibration problem. vibration and temparate montoring in ball mill. Ball Mills Vibration vibration grinding mill CGM mining, Ball Mills Monitoring Solutions Vibration signature gear, Sag Mill Pinion Vibration Problems . Get Info; xrp 943 bowl | …Dual pinion sag mill huisarts vansichemnl. Ball Mill Failure Modes stundengebet SAG mill, ball mill, ring gear, dual pinion, drive systems, variable Chat With Sal Chat With Sal ball mill failure modes OptonClinic Ball Mill Ball mills are used primary for single stage fine grinding, regrinding, and as the second stage in two stage grinding circuits According to the need of Chat


molino de molienda henan factory caco3. Ramp Up En Molienda Sag - Henan Tenic Ramp up en molienda sag josephinenwakaegofoundation. sag mill pinion vibration problems ltesummit. sag mill pinion vibration problems. or SS oil pipes did not mate up with the rocker feed banjos very well and like Jack thought that a flexible pipe .The Ernest Henry SAG mill (11 MW) is currently the largest twin pinion single drive mill installed in Australia. Problems have been experienced with the twin pinion drive at Fimiston and with the ring motor at Cadia. At Cadia, excessive vibration and deflections in the drive stator were encountered during commissioning of the mill and later ...


Firstly, there was a serious flaw in the power configuration of the SAG mill and ball mill (both rated at 6000 kW with a single pinion drive). The capacity of the SAG mill was not fully utilized, as the actual operating power draw was only 3358 kW. This meant it was only operating at 56% of its maximum power, providing large room for improvement.high axial vibration on a ball mill [randpic] High vibrations on a ball mill AMP Maintenance 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


Most of our work since 2000 has been in developing grinding mill foundations to avoid vibration and unacceptable deflections. On a recent project for a plant in Peru, the client was told by the mill vendor that there was no need to do a systems (dynamic) analysis on the mill foundations because the mills on that project were gear driven rather than being driven by ring motors (gearless drives).Re: Ball Mill Girth Gear and Pinion Alignment. 08/27/2011 2:07 AM. pinion alighnment is done by coating the pinion with a lead based grease. after rotating the drum, the grease marks will show the contact area. the pinion should contact the girth "ring" near the center of …


ball mill helical pinion gear vibration cause. OrBall MillHelical Ring Gears Description. Sag orball millhelical ring gears description.Following the sagmillwill be two 9,000-hpball.The largest gear-drivenmill.Chat with sales girth gear sagmillgrindingmillchina.Ball millhelical pinion gearvibrationcause description causes of poor output on coalball mill.Gears or the single-helical sagmillgirth ...Jun 25, 2008· a gearless mill drive motor We have numerous problems with insulation. ie partial discharge. The main problem I think is the derating factor at high altitudes.(insulation at high and cold altitudes over 2000 metres) Could I please have suggestions around this


Once the oil was changed, the vibration did not increase any further. The mill has been in operation one year since the lubrication problem was detected at an early stage Case 2) asset analytics system installed to overlook two (2) GMDs of 38 feet (~11.6 m) diameter SAG mill drives; in a remote location, recording simultaneously data of relevantThe vibration measurements at the feet and concrete are rms. What vibration levels would you expect in mm/rms Not being a structural engineer but the foundation is quite massive. When they commissioned and started the Sag Mill up I was quite impressed with the low vibration which included the motor, gearbox and pinion bearings.


As mentioned the Sag Mill was run for 8 days at its limit 5,500kwto 5700 kw and this is the time the high vibration started, I still have the motor suspect but the gearing pinion and girth gear did …operating at 90% of its maximum power. The combined power draw of the SAG mill and ball mill was 8658 kW, which caused partial over-grinding. From experience in processing plants outside of China, the power rating of the ball mill should be higher than that of the SAG mill [5]. The pebble crusher had an over-powered configuration.


Overview on the grinding mills and their dual pinion mill drives mill and two 24' x 39.5' ball mills will be briefly discussed. ... the installation of a new primary crusher and conveyer system. .... a short circuit on the motor terminals that could cause severe damage to the gear, pinions, bearings and mill. .... has been shown (Hamilton et al, 2006) that several torque spikes occur during ...Answer (1 of 3): The main machine of the grinder is driven by a speed regulating motor, equipped with a high-power deceleration system, with soft start and soft stop, and smooth operation. Through the upper and lower grinding discs, the sun wheel, and the star wheel, four directions and a coordin...


Vibration readings taken at mill HP pump running at various RPM, The vibration level was less and almost 8mm/sec to 9mm/sec when the pump was running at 900 rpm, so it is advisable to run the pump at 900 rpm to have minimum vibration in the SAG Mill. Conclusion:the mill builder can provide the gear designer with input power and output speed. The next step is the interface dimen-sions. Since the gear needs to turn the mill, it needs to have a bore larger than the mill outside diameter. The mill out-side diameter is a function …


The 38' SAG Mill at Freeport Indonesia has already proven discharge capacity at new feed rates of over 6,000 mtph. The largest mill line offered to date (2004) includes a 33,000 HP (24.6MW) SAG Mill and two 25,000 HP (18.6MW) Ball Mills for a total installed power of 83,000 HP/61.8MW. This list speaks for itself.By combining with SAG discharge and screening on the SAG discharge screens, top size control to the ball-mill circuit feed is maintained while still unloading the SAG circuit (Mosher et al, 2006). A variant of this method is to direct pebble-crushing circuit product to the ball-mill sump for secondary milling: while convenient, this has the ...