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. Cm1 girth gear report free download as excel spreadsheet. Industrial gear units girth gear series girth gears are used to drive large, rotating systems such as dryers, rotary kilns or horizontal mills. 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. Home crusher plantsequipment for measuring girth gear.
Run out measurement of girth gears on rotary kilns, rotary dryers and ball mills. In most cases, the mechanical accuracy of the gear blank is taken for granted and, after all, preparing a gear blank normally consists of. A girth gear can be assembled to a drum with a flanged connection or with spring elements. 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. This division at to ensure alignment and runout integrity. Cm1 girth gear report gear mechanical engineering scribd. Gear oils based on polyalphaolefin pao and synthetic hydrocarbon. In addition to our manufacturing work, we provide field maintenance repair services for rotary parts. If your girth gear cannot be repaired at site, our proposals team will strive to minimise the costs associated with removing your girth gear from its application. In addition to the very slow operating speeds, there are significant thermal, alignment, and cleanliness issues that need to be addressed. Have you ever seen a kiln girth gear with 14 jointscheck it out here in this video. Recognize different gearing systems and relative advantages and disadvantages between them. The flender girth gear unit described in these instructions has been designed for driving a tubular mill.
Product introduction 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. Terms and definitions of an open gear girth gears are manufactured from segments. We are engaged in manufacturing and supplying girth gear, industrial girth gear, kiln girth gears. Idmdrivers runtime engine from national instruments file name. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any sizereduction requirements including, equipment for measuring girth gear runout, quarry, aggregate, and different kinds of minerals. Worldwide, over 400 of these large gear units have already been deployed successfully. Understand gear trains and how to calculate ratios. We differ from other rotary kiln and ball mill companies through our extensive knowledge, experience and customer relationship in rotary and ball mill repairs. 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 pyro processing applications. Figure 5 traditional girth, pinion planetary gearbox kiln drive a recent installation for a 2500 mtd clinker plant uses a 2 pier support design kiln having a diameter of. Ball mill girth gear and pinion alignment cr4 discussion. Flender gear units girth gear unit for tubular mills dmg2 sizes 18, 22, 25.
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. A s well a3 delicate alignment problems, tendency to mill position shift and impairment of running. The gear unit is designed only for the application specified. The selection and application of lubricants for rotary kiln girth. The flender girth gear unit described in these instructions is designed for driving a tube mill. Ball mill girth gear and pinion alignment 08272011 2. Laser alignment is an essential component of a viable maintenance. The symmetrical casing of our lgdx gear unit is made of ductile cast iron and divided into four sections, with every part of the gear unit manufactured to a high standard. Gear alignment is the most important technical procedure for optimum operation of two gears in mesh. It is polysius kiln and girth gear is mounted over shell with welded u clamps and supporting clits, it has been fixed with 8. Hi we have replaced the girth gear of a ball mill used for coke grinding, and we have completed gear alignment. Rubber seals of neck shoe bearings and girth gear cover. This compact solution utilizes the full load capacity of the valuable girth ring while providing maximum usability and. It is a basic dimension from which many other features of.
Request pdf the selection and application of lubricants for rotary kiln girth gears and pinions the lubrication of rotary kiln girth gearing presents a unique. Industrial gear units, segmented girth gear seweurodrive. Equipment for measuring girth gear runout products. Rotary service company rsc is the company of choice for kiln girth gears. This study is focused on predicting the fatigue life expectancy of girth gear pinion assembly used in cement industries. Joint faces on the gear rim below the tooth root are not a close fit and alignment of each joint is effected by an axial dowel. Your heavyduty processes need components that are up to the task and our maag gear girth gears deliver highperformance for your mill or kiln. Great wall steel casting has large production capability in steel castings, so we can provide girth gear with short cast period and large amount.
What are the insandouts of quality inspection of girth gears, from both a manufacturer and buyer perspective. A girth gear is divided into 816 segments, which are joined by bolts. The gear unit is designed only for the application specified in section 1, technical data. Possible areas of application for gear units of this series are particularly the cement and ore processing industries. Girth gear is the key component to support the transmission system stability of rotary kiln and ball mill. 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. The only available option for lessening the impact of high cost gearing is to stretch your amortization. Meshing of the kiln girth gear depends on the thermal condition of the kiln. Guide values for adjustment and assembly the commission engineer of open gear drives is faced with toughest requirements when aligning or correcting the drive. Rotating girth gear using alignment fixtures duration. Gear unit that perfectly fits your ball mill flsmidth.
Understand geometry of different gears and their dimensional pro perties. The gear tooth is a component of a mechanical power transmission system that does not lack for descriptive terminology. Gear and pinion alignment our most recent inquiry from alan in the asiapacific region. Girth gears are used to drive large, rotating systems such as dryers, rotary kilns or horizontal mills. Check where to position a dial gauge to measure radial runout of a girth gear, hope this helps, thanks for viewing. They may be used in all spur or helical girth gear drives, irrespective of the subsequent lubrication method. Usually fitted to the outside of horizontal mills, rotary mills and kilns, girth gears provide the systems primary rotational drive and as such need to be robust, efficient and built to. 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. Gear design objectives understand basic principles of gearing. As a guideline for the alignment of large girth gear drives, the.
Possible areas of application for gear units of this series are mainly the cement and oreprocessing industries. Dec 28, 2017 have you ever seen a kiln girth gear with 14 jointscheck it out here in this video. Never run out of space for all your photos, videos, and files with for the price but 57. Jan 07, 2018 check where to position a dial gauge to measure radial runout of a girth gear, hope this helps, thanks for viewing. What are the insandouts of quality inspection of girth gears, from both a. Ball mill girth gear and pinion alignment cr4 discussion thread. The pitch circle is a circle on the face of a gear that passes through points that are radially half way up the working depth of the teeth. Careful alignment of the girth gear and of the transmission gear is of critical impor. If you need large diameter girth gears in your process machinery, then you need a product you can rely on. A practical guide to shaft alignment plant services.
After instal lation, the teeth of a girth gear of 7. Gear design and modeling was carried out using a cad package and analysis. So, the quality requirements during the actual production for the big gear ring are very high. Priming lubricants are products containing a high percentage of additives and are applied prior to the initial operation of gear drives. The tooth engagement exerts forces detrimental to the mill. Not to be dismissed is the friction drive which for two. Girth gear industrial girth gear and kiln girth gears. Thyssenkrupp industrial solutions selects the appropriate drive variant for the specific application requirements. A girth gear can be single or double pinion driven. Open gear drives do the heaviest krupp polysius ag work in many branches of industry. Alignment in gearing i by geometer shafts driven one from another by gearing may be disposed parallel, at an angle or cross wiseaccording to the type of gearing employedand satisfactory operation can often depend as much on alignment of the gears on the shafts, as on the spacing of these or on precision in the gear teeth profiles. The 2 contacting surfaces or gear meshing between pinion and girth gear will permanently adapt to each other. A wide variety of girth gear options are available to you, such as steel, stainless steel, and iron.
Girth gears with durable, heavyduty performance flsmidth. The gear unit is designed only for the application specified in the section 1. 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. Mill and kiln gears 3 david brown mill and kiln gears rev. The dmg2 gear units cover the entire power range from 1,200 to 10,000 kw in standalone operation and up to 20,000 kw with the use of a dual drive. Combiflex, ring motor and direct drives are among the welltried and reliable highperformance systems.
The top countries of suppliers are china, india, and pakistan, from which the percentage of girth gear supply is 94%, 4%, and 1% respectively. Girth gears made of handy, easytoinstall segments for driving large, rotating systems. The selection and application of lubricants for rotary kiln girth gears. The flexible concept from seweurodrive has simplified manufacturing, transport and assembly. Rscs dedicated professional field staff delivers emergency onsite services 7 days a week, 24 hours a day for minor repairs and for complete gear replacement. Utilising more than 150 years of global gear engineering expertise, we. Girth gears more than just metal and teeth gear technology. January 2010 spring plates girth gear bogipinion kgd reaction arm cardan shaft. There are 832 suppliers who sells girth gear on, mainly located in asia. 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. However, for this to work your gears must offer increased service life. The pinions are new but the girth gear is refurbished with two or three hand ground areas. Selfalignment of the output pinions ensures full tooth contact to the girth gear and adapts to movements and runouts.
Girth gears for critical applications 02 03 girth gears are used in a number of the worlds critical industries, including mining, cement and minerals. The hertz contact pressure will be uniformized and, therefore, be minimized allong the complete tooth. Self alignment of the output pinions ensures full tooth contact to the girth gear and adapts to movements and runouts. Alignment surface, horizontal alignment surface, vertical these symbols indicate the oillevel checking procedure using the oil dipstick.
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