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. Ball mill girth gear and pinion alignment 08272011 2. Gear cases machined from rigid housings to ensure optimum shaft alignment, reduced noise and dynamic deflections. Our girth gears have a key role in meeting the highest power demands in vertical rollers mills. 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.
In order to choose suitable ball mill girth gear and pinion, you must make sure the materials. Ball mill girth gear and pinion alignment cr4 discussion. Installation procedure of girth gear of kiln mining machinery. Delivery and replacement of shell sections below girth gears. Cm1 girth gear report gear mechanical engineering free 30. The destruction of the edgedrive ball mill gear and pinion is mainly due to the wear and bending of the tooth surface. Girth gear is with super large diameter, the module is more than 10mm. Adding more coal to the process changes the load of the mill but the ball charge stays. 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. 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.
Its normally fixed in the outer sphere of the metal shell. Girth gears more than just metal and teeth gear technology. Repairs entail extra work for girth gear dismantling. Lateral drive alignment ball mill crusher mills, cone. Girth gear is through hardened only, fatigue strength is limited. These large coal crushing drive systems are usually rotated by motordriven gearing. Great wall steel casting has large production capability in steel castings, so we can provide girth gear with short cast period and large amount. Pdf fatigue life prediction of girth gearpinion assembly.
Girth ring gears if you need large diameter girth gears in your process machinery, then you need a product you can rely on. Your ball mill reflects years of advancement in grinding principles, materials, and. Ball mill maintenance manual the purpose of this manual is to assist you in the proper. Girth gear double pinion root clearance austment cement, ball mill girth gear root clearance. Aug 28, 2011 with all due respect, the way to perform this type of alignment is to bring in an expert if you must ask, you. Gear unit that perfectly fits your ball mill flsmidth. Damage to mill cylinder cannot endanger gear teeth. Cement mill girth gear pinion alignment procedure pdf. Mill drive gearboxes are designed to complement the girth gear to deliver cost effectiveness across the entire system. Figure 1 the two basic structural designs for girth gears, consisting of. This compact solution utilizes the full load capacity of the valuable girth ring while providing maximum usability and. 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. Girth gear industrial girth gear and kiln girth gears. 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.
Mill drive gearboxes girth gears pinions couplings. Moreover, we have designed the base plate of the girth gear and pinion. Gears and pinion for ball mill crusher mills, cone. Chaeng arranges lineation process several times, in order to make ensure the machining accuracy and position accuracy of girth gear. Ball mill pinion alignment pdf uitvaartzorglenaerts. Damage to mill cylinder, neck or stub endanger girth gear and pinion. Girth gear for ball mill gear reducers galbiati group. 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.
One side drive provides a power range up to approximately 8,000 kw when engaged with the girth gear of your ball mill. 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 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. 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. In progress part three rotating girth gear using alignment fixtures duration. 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. Hi we have replaced the girth gear of a ball mill used for coke grinding, and we have completed gear alignment. Heavyduty comminution requires heavyduty equipment and our maag gear girth gears are up to the task. We are engaged in manufacturing and supplying girth gear, industrial girth gear, kiln girth gears. After temporary alignment of the teeth of pinion and girth gear with the mill empty, fig.
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. 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. 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. Girth gears with durable, heavyduty performance flsmidth. This type is suitable for rotary kiln and ball mills as transmission gear. Therefore, the ball mill girth gear and pinion materials are required to have sufficient strength, high wear resistance and good processing performance. Sag mill pinion gear alignment reliability sag mill pinion gear alignment. File downloads multi segment girth gear datasheet download. 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. A ring gear may be fastened in one of several ways depending on the application, e. This publication deals with mill and kiln gears made in several segments, which are assembled together on site on the driven equipment. Girth gear for ball mill, 30 m, z 162 and z 20 pinions, the plant consists of a reversible mill stand driven by an integrated pinion stand mill drive.
Gears and pinion for ball mill crusher mills, cone crusher. 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. Download as xlsx, pdf, txt or read online from scribd. 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. 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 mill gear should be lifted by the pinion causing a downward. Ball mill girth gear and pinion alignment cr4 discussion thread. 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. By delivering the lateral gear drive together with the girth gear, we ensure that both components match perfectly. How to choose suitable ball mill girth gear and pinion.
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. Aug 28, 2011 with all due respect, the way to perform this. Elastic mill sag by weight of mill balls and materia. For kiln and ball mills, we offer services on open girth gears. 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. The ball mill is driven through a girth gear at a speed of 16 rev min and is mounted on the head. Gear cutting of a split girth gear for a cement mill having an input power of 2200 hp 5. 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. Girth gear applications girth gears fall into two basic categories.1680 251 1309 527 1032 1671 1581 898 67 842 1283 597 765 1324 995 207 315 296 1119 200 632 204 827 989 283 1295 1136 81 295 761 890 421 1207 1398 237 704 1290 1368 1180 455 390