In progress part three rotating girth gear using alignment fixtures duration. These large coal crushing drive systems are usually rotated by motordriven gearing. In order to choose suitable ball mill girth gear and pinion, you must make sure the materials. 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. Ball mill maintenance manual the purpose of this manual is to assist you in the proper. Mill drive gearboxes are designed to complement the girth gear to deliver cost effectiveness across the entire system. Ball mill gear guard a plate steel gear guard is furnished with the mill for safety in operation and to protect the gear and pinion from dirt or grit. This compact solution utilizes the full load capacity of the valuable girth ring while providing maximum usability and. 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. Gear cutting of a split girth gear for a cement mill having an input power of 2200 hp 5. The max drive powers vertical roller mills up to 15,000 kw with two spur gear drive units that mesh with the girth gear under the mill. As soon as the gear and pinion have been cleaned and coated with the proper lubricant, the gear guard should be assembled and set on its foundation. 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.
Gears and pinion for ball mill crusher mills, cone. The destruction of the edgedrive ball mill gear and pinion is mainly due to the wear and bending of the tooth surface. Girth ring gears if you need large diameter girth gears in your process machinery, then you need a product you can rely on. Pdf fatigue life prediction of girth gearpinion assembly. So, the quality requirements during the actual production for the big gear ring are very high. 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.
File downloads multi segment girth gear datasheet download. The mill gear should be lifted by the pinion causing a downward. Its normally fixed in the outer sphere of the metal shell. Adding more coal to the process changes the load of the mill but the ball charge stays. 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. Fatigue life prediction of girth gearpinion assembly used in kilns by finite element analysis article pdf available august 20 with 1,498 reads how we measure reads. 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. 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. This publication deals with mill and kiln gears made in several segments, which are assembled together on site on the driven equipment. Ball mill girth gear and pinion alignment cr4 discussion thread. Girth gears with durable, heavyduty performance flsmidth. Cr4 thread ball mill girth gear and pinion alignment aug 28 2011 re ball mill girth gear and pinion alignment 08272011 207 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. Elastic mill sag by weight of mill balls and materia. Mill drive gearboxes girth gears pinions couplings.
Heavyduty comminution requires heavyduty equipment and our maag gear girth gears are up to the task. Damage to mill cylinder, neck or stub endanger girth gear and pinion. The pinion and girth gears of two 9 mw ball mills exhibited severe scoring within five months of lubrication failure, torsional vibrations, alignment and gear. Cm1 girth gear report gear mechanical engineering free 30. Repairs entail extra work for girth gear dismantling. We are engaged in manufacturing and supplying girth gear, industrial girth gear, kiln girth gears. Download as xlsx, pdf, txt or read online from scribd. Moreover, we have designed the base plate of the girth gear and pinion. Lateral drive alignment ball mill crusher mills, cone.
This type is suitable for rotary kiln and ball mills as transmission gear. In order to maintain alignment of the girth gear and mill pinion, standard. 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. Girth gear is through hardened only, fatigue strength is limited. Ball mill pinion alignment pdf uitvaartzorglenaerts. By delivering the lateral gear drive together with the girth gear, we ensure that both components match perfectly. 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 girth gear that is attached directly to the ball mill. Your ball mill reflects years of advancement in grinding principles, materials, and. Girth gear double pinion root clearance austment cement, ball mill girth gear root clearance. Sag mill pinion gear alignment reliability sag mill pinion gear alignment. Chaeng arranges lineation process several times, in order to make ensure the machining accuracy and position accuracy of girth gear. How to choose suitable ball mill girth gear and pinion. Figure 1 the two basic structural designs for girth gears, consisting of.
For kiln and ball mills, we offer services on open girth gears. 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. 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. Cement mill girth gear pinion alignment procedure pdf.
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. Gear unit that perfectly fits your ball mill flsmidth. One side drive provides a power range up to approximately 8,000 kw when engaged with the girth gear of your ball mill. Delivery and replacement of shell sections below girth gears. Aug 28, 2011 with all due respect, the way to perform this. 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 mill pinion alignment pdf ement mill girth gear pinion alignment procedure pdfutogenous mills, semiautogenous mills and ball mills for wet res, cement clinker, coal and other materialsolysius has been the resulting global know how of process and plant technology, together with the be driven via ring gear. Girth gears more than just metal and teeth gear technology. 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. Hi we have replaced the girth gear of a ball mill used for coke grinding, and we have completed gear alignment. Gear cases machined from rigid housings to ensure optimum shaft alignment, reduced noise and dynamic deflections.
After temporary alignment of the teeth of pinion and girth gear with the mill empty, fig. 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 of ball mill is the major component used in rotary kiln and ball grinding mill which is required to be operated in a long time. Our girth gears have a key role in meeting the highest power demands in vertical rollers mills. Girth gear industrial girth gear and kiln girth gears. Girth gear applications girth gears fall into two basic categories.
A ring gear may be fastened in one of several ways depending on the application, e. Girth gear for ball mill gear reducers galbiati group. Gears and pinion for ball mill crusher mills, cone crusher. Jul 21, 2018 therefore, the ball mill girth gear and pinion materials are required to have sufficient strength, high wear resistance and good processing performance. Installation procedure of girth gear of kiln mining machinery. The ball mill is driven through a girth gear at a speed of 16 rev min and is mounted on the head. Girth gear is with super large diameter, the module is more than 10mm.
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