Able to cast components up to 7 000kg in weight enables kew foundries to produce half gears totalling 14 000kg, or quarter gears totalling 28 000kg in casting weight. 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. The girth gear drive system is a lifeline for cement producers. This compact solution utilizes the full load capacity of the valuable girth ring while providing maximum usability and. In addition to our manufacturing work, we provide field maintenance repair services for rotary parts. It is therefore absolutely essential that a suitable girth gear fastening system is used. Great wall steel casting has large production capability in steel castings, so we can provide girth gear with short cast period and large amount. This should possess a high degree of flexibility in the radial direction and should simultaneously react flexibly to the thermal expansion of the rotary kiln shell. I didnt think girth mattered so much until my current boyfriend hes much bigger. Kiln drive will rotate the supporting roller, by that the kiln will rotate. Girth ring gears if you need large diameter girth gears in your process machinery, then you need a product you can rely on. Get the full package of girth gear and millkiln drive.
Girth gears more than just metal and teeth gear technology. Get best price and read about company and get contact details and address. Erection and retrofit services for rotary drums, girth. The pinion can also be separate and mounted on a separate shaft, supported by bearings.
Casting girth gears and spur gears in grey or sg iron is a costeffective alternative to steel castings or fabrication, and is easier to machine. Girth gear is the key component to support the transmission system stability of rotary kiln and ball mill. Worldwide, over 400 of these large gear units have already been deployed successfully. Girth gears are used to drive large, rotating systems such as dryers, rotary kilns or horizontal mills. David brown santasalo has almost three centuries of gear engineering expertise and a huge. As there is no girth gear, no need for grease lubrication. They are impressive as they are known for their sturdy built. Large girth gear drives have proven effective in plant engineering for many decades and continue to be the type of drive most commonly found in ore and cement. Its normally fixed in the outer sphere of the metal shell. The kcp limited, experts in manufacturing and exporting girth gears, ball mills and 12 more products. The motor drives the pinion and pinion drives the girth gear mounted on the cylinder shell, because of this, the ball mill start driving. The kiln has variable thermal expansion due to condition and type of its refractory and. 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.
Rorary kiln girth gearshould be installed correctly on kiln tube body to ensure the normal operation of rotary kiln 1 the center line of the gear must be coincident with the central line of the kiln cylinder 2 because of its large size, girth gear is generally separated into two. The kiln girth gear alignmentthat we present with has been made in order to live up to the expectation of the clients in terms of quality and structured look. 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. Rotary service company rsc is the company of choice for kiln girth gears. Further, these comprise maximum weight of 70 mt single. Meshing of the kiln girth gear depends on the thermal condition of the kiln. 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. Girth gear industrial girth gear and kiln girth gears.
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. A girth gear can be single or double pinion driven. 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. A pinion is manufactured as a single part with an integrated shaft. Phased array eddy current array testing provides 100% coverage of root and load face in one pass and ideally suited for mill and kiln girth gears testing with two probes able to cover most sizes.
Girth gear is with super large diameter, the module is more than 10mm. 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. The image appear more or less strong depending on the out of round position. Buy kiln girth gear at best price of rs 500000 set from surya engineering works.
Girth gear for 100 tpd dri sponge iron plant spare parts equipment manufacturer and supplier in india, girth gear is the main spare parts in kiln dri plant, this is also know drive gear, kiln gear rim pcd4480 wide355 mm, no. Some helical girth gear designs utilize joint contact surfaces that run transverse to the gear rim face, and not aligned with the helix angle. Standard practice for examination of mill and kiln girth. Kumera active drive girth gear ensures optimal load distribution on girth gear teeth throughout the. 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 flexible concept from seweurodrive has simplified manufacturing, transport and assembly. So, the quality requirements during the actual production for the big gear ring are very high. 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.
The process begins in manufacturing and continues through installation, runoff and. This type is suitable for rotary kiln and ball mills as transmission gear. Video of the processes to manufacture a girth gear completely inhouse. This is particularly true for large, slowrunning open gear drives where high torques are transmitted. The 2 contacting surfaces or gear meshing between pinion and girth gear will permanently adapt to each other.
The forces from the drive unit are transmitted to the kiln shell via the girth gear. Girth gear diameters of up to 16m large upon request girth gear maximum width 600mm. In most cases, the mechanical accuracy of the gear blank is taken for granted and, after all, preparing a gear blank normally consists of. For smaller gears a flexible probe like a piece of thick vinyl can conform to any gear shape required. We can supply individual kiln drives, or fully optimised systems comprising a kiln drive, girth gear and pinions. The hertz contact pressure will be uniformized and, therefore, be minimized allong the complete tooth. The girth gear and pinions manufactured as our standard offering are governed by the specification under agma 60146114a06, published in 2006 this is. Girth gear testing using advanced ndt phased array eddy.
There will be no migration with this kiln because of the special suspension system. Erection and retrofit services for rotary drums, girth gear drives and kilns kumera machinery ltd, as a fully owned subsidiary of kumera corporation, takes challenges beyond normal manufacturing operations for services covering retrofitting existing kiln installations, renewing drive systems by replacing gearboxes and girth gear drives with. Over the 30 years of experience in gear manufacturing industries, pushpak has come to know as eminent manufacturer and supplier of gigantic gears and its applications, pushpaks high reliability girth gears are used to drive horizontal ball mills sag mills and are designed for ultimate strength and reliability in service. Hydraulic kiln gear drive girth gear flanged type girth gear, spring plate design gear rim spring vshape gear rim spring standard girth gear, spring plate design tooth profile gear contact pattern girth gear axial run out form. Why are the spring plates that connect rotary kiln and. Ok so i am interested in finding out if my girth is of a respectable size, i cant find anything reliable on a search engine so decided to get a real public view. The demands grow with the size the tolerances involved in the manufacture and assembly of girth gear drives.
Gear alignment is the most important technical procedure for optimum operation of two gears in mesh. I had no idea about this test so it was nice to try it and see where i stand. Industrial gear units, segmented girth gear seweurodrive. The girth gear is connected to the cylinder shell by bolt. Girth gear is an important transmission part of rotary kiln and ball mill equipment. 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. 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. Conditionalpreventive maintenance of major rotating equipments kilns, mills. A wide variety of girth gear options are available to you, such as steel, stainless steel, and iron.
Girth gear drive and central drive are mechanical systems designed to reduce the motor speed to the working speed of the mill. We are engaged in manufacturing and supplying girth gear, industrial girth gear, kiln girth gears. Girth gear inspection pre and postmanufacture email your questionalong with your name, job title and company name if you wish to remain anonymous, no problem to. There are many quality control require ments involved with girth gears. Mill and kiln gears 3 david brown mill and kiln gears rev.
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