feed size (F80) of over 70 mm and a SAG mill throughput of 5200 t/h. The Batu Hijau SAG mill specific energy was a function of point load test and RQD. The point load test substitutes for Axb measurement in that relationship. The Batu Hijau ore is less fractured than the Constancia ore based on the average RQD data and Constancia’s SAG mill ...
Get PriceMeasure gear backlash by mounting a dial indicator so it is similar to a pinion tooth profile, block the gear to prevent its rotation and rock the pinion through the backlash. To measure shaft endplay, mount a dial indicator at the end of a shaft and move the shaft in the axial direction.
Get PriceAug 28, 2011· 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 the gears.
Get PriceSemiautogenous grinding (SAG) mill liner design and development D. Royston ... reduce packing and ball/liner damage, and to use larger, hence fewer, mill liner parts to reduce downtime at liner changeouts. Key words: Comminution, Grinding, SAG mill, Mill liners ... Increasing mill speed (, through a change in pinion size) along with an ...
Get PriceOnce the basic operating conditions have been defined for the mill designer then, and only then, can he begin taking into account shell and head stresses and trunnion bearing sizes required to carry the load and to give the required openings for feeding and discharging the mills. Mill heads are key structural components of any grinding mill.
Get PriceMill Pinion Gears. Our high torque, high precision integral and nonintegral mill pinions are used in SAG, horizontal ball mill and rotary kiln applications across the globe. Supplied as an individual component or as a fully optimised system comprising a girth gear, mill drive gearbox, pinion and barring drive, our pinions are manufactured ...
Get PriceLeach Pad Stacker—Damage Mitigation and Cleaner Hydraulic Fluid. FilterMag Enhanced Systems. ... Ball Mill Trunnion Bearings; Ball Mill Filter Panel for Sumps; SAG Mill Trunnion Bearings; SAG Mill Pinion Gear Bearing; SAG Mill Gearbox; Crusher Hydraulic Systems; Regrind Hydraulic Systems; Auxiliary Hydraulic Systems; Aggregate Processing ...
Get PriceUpdates on geared vs gearless drive solutions for grinding mills pinion on sag mill ,(operating) Among the many reasons that geared drives on large SAG mills , twin pinion drives used primitive electronics which have since been developed to , SAG mill conference, provided details of the then largest gear drive in Open Technology for Mill Design and Performance ,The advent of ...
Get PriceCOPPER MOUNTAIN: OVERVIEW ON THE GRINDING MILLS AND THEIR DUAL PINION MILL DRIVES ABSTRACT This paper will first give a short overview of the Copper Mountain project in British Columbia, which just has started commercial operation earlier this year. The grinding process with one 34' x 20' SAG
Get PriceAutogenous mills, semiautogenous mills and ball mills for wet grinding. A company of Polysius ThyssenKrupp Technologies tk. ... Two SAG mills with rigid pinion drives. SAG mill ... SAG mill. Synchronous motor drive with air clutch.
Get PricePowerful gears in rolling mills. ... recent higher loads and throughput had exacted a toll in damage and failures. ... Because of an impact when a bar enters the mill, the pinion “bounces ...
Get PriceWe will begin with the mill’s bull gear assembly and work towards the motor, The BULL GEAR, sometimes called the RING GEAR is designed to turn the mill transforming the energy of the motor into motion for the mill. By mill we refer to Ball Mills, Rod Mills and SAG Mills. Anything gear and pinion really. The discharge end of the mill; For the operator this only becomes a problem should the ...
Get PriceThe mill drive system consists of the main mill motor, the main reduction gear box, mill pinion and girth gear. The mill is also equipped with a barring drive which is either connected to the main drive reduction unit or alternatively mounted at the back of the main motor. Refer to Figure 2 for a schematic of the mill …
Get PriceOct 03, 2017· Bearing Cap of a SAG Mill Pinion DE BRG on the cap loaded side pinion. Bearing size is 23284. Bearing Cap of a SAG Mill Pinion DE BRG on the cap loaded side pinion. Bearing size is 23284
Get PriceNEW LOCKED CHARGE PROTECTION SYSTEM PREVENTS DAMAGE TO 14MW GEARED MILL. ABSTRACT The 14MW SAG mill at Tarkwa, Ghana, experienced a frozen drop charge incident on 10 February 2010. This caused downtime of 112 hours, a repair cost of 200k and production loss of 162,000 tons, corresponding to a loss of
Get PriceJun 05, 2013· We provide optimized mill drive solutions for all types of ringgeared mills: low and high speed, single and dual pinion, with and without a gearbox — all designed for reliable, long life and ...
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Get PriceMetallurgical ContentBall Mill TRUNNION BEARINGSTrunnion BRONZE BUSHINGSTRUNNION BASE AND CAPBall Mill LUBRICANT JACKSBall Mill PINION SHAFT BEARINGS The first part of the mill that we will look at is the TRUNNION BEARING. This is a HYDROSTATIC BEARING which is a slow moving bearing that carries a heavy load. Usually it is constructed from Babbitt’s metal.
Get PriceThe SAG mill pinion energy is determined from the SAGDesign™ testwork results as follows : W SDT = revs (16,000 + m s)) / ( m s) where : W SDT = AG/SAG Specific Pinion Energy from a F 80 of mm to a T 80 of mm, kWh/ton ground revs = Cumulative number of SAG test mill revolutions to 80% passing m s = SAG mill feed sample ...
Get PriceSelecting Inching Drives for Mill and Kiln Applications Glen Cahala Frank C Uherek, Principal Engineer Gear Engineering Software Development Abstract The inching drive, also known as a barring or auxiliary drive, is an important component of any mill or kiln installation. It is used for maintenance and inspection purposes, as
Get PriceLOCKED CHARGE STARTS AND YOUR GRINDING MILL Authors: Jeff Belke Mitch Bertrand ... SAG mill continually pump the finer material out of the mill, lowering the total amount of residual fine ore and thus improving the situation in respect to locked charge starts. ... MILL COMPONENTS AT HIGH RISK OF DAMAGE As locked charge events subject the mill ...
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Get PriceBall mill pinion alignment thedevonshirehouse sag mill pinion gear alignment causes knocking in the drive train, vibration is your one stop shop for girth gears for ag, sag, ball mill, 45747 what are the causes of vibration on limestone ball mill hat are. Get Price; Ball Mill Helical Pinion Gear Vibration Cause
Get Pricedrive application is a dualpinion SAG mill driven by two 5,000 kW wound rotor induction motors (WRIM). Two TMdrive10SPRs control motor speed by recovering rotor current and returning the power to the utility supply. Confi gured in a twin motor arrangement, the motors share load in the tandem mill. The Customer Need
Get PriceMill load sharing – Maintains equal torques on dual pinion mills throughout the whole speed range. Controlled rollback – Prevents backlash and reduces downtime. Mill power ride through – Keeps the mill operating even under voltage dips. Overduty cycle – Avoids unexpected downtime if the mill …
Get PriceMetallurgical ContentBall Mill Maintenance ManualOn Mill Installation and MaintenanceBall Mill Concrete FoundationsGrinding Mill FOUNDATIONGROUTINGBall Mill Sole Plate Am sure your Ball Mill is considered the finest possible grinding mill available. As such you will find it is designed and constructed according to heavy duty specifications.
Get PriceJan 13, 2014· Parts of SAG Mill to be lubricated: Trunion Bearing (feed end) Motor Bearings Gearbox Pinion Bearings : SAG mill Diagram Trunion Bearing (dis. end) 7. Lubricant Data: Masbate Gold Project’s SAG mill uses Compounded Gear Oil as their main lubricant. But a different class of Gear oil is use in every operating system of the SAG mill.
Get PriceOutotec Grinding technologies 007 the mill drive train to be brought closer to the mill, which in turn allows for smaller foundations and lower installation costs. Mill drives Most mills are driven by ring gears, with a 360° fully enclosing guard. The ring gear casting material is either nodular iron, cast or forged steel. These gears are usually
Get PriceSAG mill itself and not on the test work program. Stated another way, money invested in a large SAG mill is an investment that can produce handsome returns if extra production is needed or simply to give the mine the option to mill the hardest ores at design throughput rates.
Get PriceThe 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 ...
Get PriceBall Mill Gear Alignment. In 1998, girth gear damage of a SAG mill at a mine in Western (semiautogenous) mill or SAG and ball mill in series. Contact Supplier RAM Enterprise RAM Enterprise, Inc. ... installation twin pinion sag mill – Crusher Machine For Sale.
Get PriceIf no obvious damage is detected, document the condition of gears and bearings with photographs, sketches and written descriptions. ... 6inch medium mill bastard file for recording graphite contact tapes; ... Measure gear backlash by mounting a dial indicator so it is similar to a pinion tooth profile, block the gear to prevent its rotation ...
Get PriceTo avoid permanent damage to gears, pinion bearings and soleplates, we recommend a complete inspection ... Gear being replaced on an 11,000 HP Sag Mill 37110518ENMSE Gear installation process • ... After mill startsup, dynamic pinion alignment is performed to …
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