Ball mills have been designed in standard sizes of the final products between 0. Damage to mill cylinder cannot endanger gear teeth. File downloads multi segment girth gear datasheet download. Girth gear is with super large diameter, the module is more than 10mm. We can provide all elements of a mill drive system as a fully optimised solution to suit your process exactly, or individual components as required. Ball mill pinion alignment pdf brillentrend how to align a ball mill pinion and girth gear mining ball mill girth gear radial axial alignment procedure we can supply some spares for rotary kiln or ball millsuch as girth gear and pinionring how to align ball mill pinion to drive motorcrusher and mill. Therefore, the ball mill girth gear and pinion materials are required to have sufficient strength, high wear resistance and good processing performance. The girth gear driving pinion ends up getting aligned to the reducer, causing a misalignment issue between the girth gear teeth and the driving pinion teeth fig. Single pinion concept pdf ball mill wikipedia, the free encyclopediaball mill alignment pdf,a ball mill is a type of grinder used to grind and blend materials for use in mineral dressing processes, paints, pyrotechnics, ceramics and selective laser, principle a ball mill works on. Helical gearing may be either of the single helical or double helical herringbone design. Metso is proud to announce the launch of our new rebranded offer.
Repair and refurbishment our repair and refurbishment team provides handson gear service including. Heavyduty comminution requires heavyduty equipment and our maag gear girth gears are up to the task. Manufactured using stateoftheart processes and highquality source materials, our line of girth gears is fitforpurpose and for a lifetime ensuring. Ball mill girth gear and pinion alignment cr4 discussion. The girth gear is the major component used in rotary kiln and ball grinding mill which is required to be operated in a long time so, the quality requirements during the actual production for the big gear ring are very high. Delivery and replacement of shell sections below girth gears delivery and installation of girth gear, pinion, fixation system and drives change or reversal and alignment of girth gear, pinions and drives. This girth gear is widely demanded in different industries to be installed in different machines such as rotary kilns, rotary dryers and ball mills, girth gear for ball mill, girth gear for cement mill, girth gear for raw mill, girth gear for rod mill, gear for ball mill, gear for rod mill, gear. It is essential to get both lubrication and alignment. The david brown standard is a maximum temperature difference deltat of 6 degrees. Central or girth gear drive for ball mills 1 gear,central or girth gear drive for ball mills 1 free download as pdf file pdf, text file txt or read online. Repairs entail extra work for girth gear dismantling. Its normally fixed in the outer sphere of the metal shell.
Repair and refurbishment our repair and refurbishment team. Inspection services beside the visual inspection of girth gears we also apply. In most cases, the mechanical accuracy of the gear blank is taken for granted and, after all, preparing a gear blank normally consists of. This manual needs to be available for use during installation of the girth gearing supplied. Ball mill girth gear pinion alignment cr4 thread ball mill girth gear and pinion alignment with all due respect, the way to perform this type of alignment is to bring in an girth gear with pinion root clearance setting ball mill pinion alignment pdf pinion girth root and backless in cement mill. It was found that the only way to stop the whereas the damage on the other ball mill gears was on the nondrive side. Girth gears more than just metal and teeth gear technology. Gear alignment is the most important technical procedure for optimum operation of two gears in mesh. The destruction of the edgedrive ball mill gear and pinion is mainly due to the wear and bending of the tooth surface. We are engaged in manufacturing and supplying girth gear, industrial girth gear, kiln girth gears. Concern was expressed over the gearbox and ball mill at a power plant. These large coal crushing drive systems are usually rotated by motordriven gearing. The mechanical torque split of the maag lgdx gear unit guarantees an equal load distribution between the two output pinions. Black grease was noticed at the couplingend pillow block bearing as well as a loose bearing nut.
According to the need of customers, ball mill can be either wet or dry designs. Pinion pittings in open girth gear pinion pittings in open girth gear rkarthik mechanical. The girth gear is the major component used in rotary kiln and ball grinding mill which is required to be operated in a long time so, the quality requirements during the actual production for. Girth gears more than just metal and teeth steve lovell introduction the clear majority of published knowledge about gear manufacturing relates to two main subjects. So, the quality requirements during the actual production for the big gear ring are very high. Ball mill girth gear pinion alignment cr4 thread ball mill girth gear and pinion alignment with all due respect, the way to perform this type of alignment is to bring in an girth gear with pinion root clearance setting ball mill pinion alignment pdf. Ball mill girth gear and pinion alignment cr4 discussion thread. Girth gear industrial girth gear and kiln girth gears.
Spur gears and pinions are cut with teeth of the full depth involute tooth. For kiln and ball mills, we offer services on open girth gears. In order to choose suitable ball mill girth gear and pinion, you must make sure the materials. The tsection of the girth gear provides additional flexibility within the system to counter and absorb any misalignment between the mill and the gear unit. Mill and kiln gears are usually rated in accordance with the appropriate agma standard, although. Manufactured using stateoftheart processes and highquality source materials, our line of girth gears is fitforpurpose and for a lifetime ensuring longlasting, highperformance for your mill or kiln.
You can expect the same quality supported by decades of gearing and oem expertise. Jan 07, 2018 check where to position a dial gauge to measure radial runout of a girth gear, hope this helps, thanks for viewing. In order to maintain alignment of the girth gear and mill pinion, standard practice in the industry is to measure the temperature difference across the face width of the girth gear. The auxiliary drive allows you to slowly turn the ball mill to evenly cool it or for maintenance tasks.
Girth gears gear wheels are large ring gears which are normally fitted to the outside of ball mills or rotary kilns to provide the primary rotational drive,which is required to be operated in a long time so, the quality requirements during the actual production for the big gear ring are very high girth gears are applied in the mining, cement, minerals industries used in various types of. With continuous efforts on process optimization on the basis of rich manufacturing experience and advanced equipment, chaeng is able to offer high quality cast steel girth gears according to users drawings and requirements. If you need large diameter girth gears in your process machinery, then you need a product you can rely on. Girth gear, ball mill, gear wheel manufacturer supplier in china, offering new girth gear for ball mill and mining mill, turnkey project construction of new dryprocess 3300tpd cement making plant, pcf series single stage hammer crusher and so on. Girth gear is the key component to support the transmission system stability of rotary kiln and ball mill with continuous efforts on process optimization on the basis of rich manufacturing experience and advanced equipment chaeng is able to offer high quality cast steel girth gears according to users drawings and requirements. A typical application consists of a motordriven primary singlestage reducer that, through a flexible coupling, drives a large open pinion which in turn, meshes with a large ball mill ring. Ball mill pinion alignment pdf riskmark from common ball mills there is a second type of ball ball mill alignment pdf zenith grinding mills and their dual pinion mill how to align ball mill pinion to drive motor sag mill, ball mill, ring gear, dual pinion, drive systems, variable speed introduction, alignment of the girth gear two sag mills. With a variety of options for cast, fabricated steel or sg iron and multisegmented gears, david brown santasalo is your one stop shop for girth gears for ag, sag, ball mill, kiln and dryer applications. Mill drive gearboxes girth gears pinions couplings. Jul 21, 2018 in order to choose suitable ball mill girth gear and pinion, you must make sure the materials. This compact solution utilizes the full load capacity of the valuable girth ring while providing maximum usability and.
Girth gears with durable, heavyduty performance flsmidth. Damage to mill cylinder, neck or stub endanger girth gear and pinion. Great wall steel casting has large production capability in steel castings, so we can provide girth gear with short cast period and large amount. China new girth gear for ball mill and mining mill china. Gear cases machined from rigid housings to ensure optimum shaft alignment, reduced noise and dynamic deflections.
Kumera active drive girth gear ensures optimal load distribution on girth gear teeth throughout the years of operation without a need for high accuracy alignment. Ball mills are used primary for single stage fine grinding, regrinding, and as the second stage in two stage grinding circuits. Ball mill girth gear and pinion alignment 08272011 2. Check where to position a dial gauge to measure radial runout of a girth gear, hope this helps, thanks for viewing. Pitch circle diameter of girth gear mm 70 60 50 40 30 20 10 0 1.
Mill and kiln gears i david brown mill and kiln gears rev. Central or girth gear drive for ball mills 1 gear,central or girth gear drive for ball mills 1 free download as pdf file pdf, text file txt or. Girth gear applications girth gears fall into two basic categories. This type is suitable for rotary kiln and ball mills as transmission gear. Change or reversal and alignment of girth gear, pinions and drives. Unusual noises were also reported from the machine. Temporary repairs of crack and wear on girth gear and pinion ball mill flange runout machining. Gear unit that perfectly fits your ball mill flsmidth. Autogenous mill girth gear pdf liceoartisticoascolipiceno. Therefore, the ball mill girth gear and pinion materials are required to have sufficient strength, high wear resistance and good. Great wall castings big gears are applied in rotary kiln and ball mill of 5000 tpd cement production line in domestic famous cement enterprises, such as xinjiang tianshan building material group, henan mengdian group, etc. Dec 10, 2012 ball mill pinion alignment pdf grinding mill china.
Lateral gear drive system for horizontal ball mills. Flangemounted girth gears, the more common of the two, are most frequently utilized in cold processing equipment such as sag semi autogenous grinding mills and ball mills for use in the mining and cement industries. Bechem products convince by innovative formulations. Selfalignment of the pinions ensures full tooth contact to the girth gear and adapts to movements and run outs. Metallurgical 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. This study is focused on predicting the fatigue life expectancy of girth gearpinion assembly used in cement industries. Download as pptx, pdf, txt or read online from scribd. Gear cutting of a split girth gear for a cement mill having an input power of 2200 hp 5.
Girth gear is the key component to support the transmission system stability of rotary kiln and ball mill. Lateral drive alignment ball mill crusher mills, cone. As a guideline for the alignment of large girth gear drives, the. How to choose suitable ball mill girth gear and pinion. A complete range of gear and pinion sets, inspections, design, installation and alignment services to drive your mills performance. As such you will find it is designed and constructed according to heavy duty specifications. It must be brought to the attention of personnel involved in the selection of david brown. Optimize girth gear based on the operation characteristics of the rotary kiln and ball mill, to ensure the stability of the girth gear during the long time operation and extend its service life. Two general classifications of gearing are used for ball mill drives.
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