Introduction to gear design chapter 2 what kind of gears should i use. 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. Lubrication, maintenance, service for open gears your efficiency is our passion. 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.
Pdf fatigue life prediction of girth gearpinion assembly. Casting of such workpieces free from shrinkage holes and pores, pig. Helical gears are stronger and operate more quietly than comparable size spur gears. 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. Backlash, a clearance between mating gear teeth, is built into speed reducers to let the gears mesh without binding and to provide space for a film of. A s well a3 delicate alignment problems, tendency to mill position shift and. Alignment specialises in developing, implementing and realizing. The rotation shaft of the pinion is free from the rotation shaft of the wheel. Jan 07, 2018 check where to position a dial gauge to measure radial runout of a girth gear, hope this helps, thanks for viewing.
Check where to position a dial gauge to measure radial runout of a girth gear, hope this helps, thanks for viewing. Arrangement or position in a straight line or in parallel lines. Gear theory boston gear rack and pinion catalog1 schlenkent. Girth gear is the key component to support the transmission system stability of rotary kiln and ball mill. Open gear drives do the heaviest krupp polysius ag work in many branches of industry. Ball mill pinion alignment pdf bikerpointeuall mill pinion drive train alightment in rsa examining the ball mill reports, visual inspection and discussions repair the pinion and girth gear and realign the mill assembly, motor drives the mill, via a quill shaft and a single reduction gear train, consisting of a. 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. Meshing of the kiln girth gear depends on the thermal condition of the kiln.
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. If the motor and unit are connected by a coupling, be sure that the alignment is within the specifications of the coupling. Ball mill girth gear and pinion alignment 08272011 2. In most cases, the mechanical accuracy of the gear blank is taken for granted and, after all, preparing a gear blank normally consists of. Girth gear radial runout accurate measurement of kilnshell profile kilnshell 3d model. Cdmis cmm operation instruction for manual measurement ie 415 project example lucas tsai. They should be used only if no other tolerances are prescribed by existing inhouse standards. Free turntable cartridge alignment protractor and speed discs. Once the pinion gear is installed, position ring gear and carrier into housing to check backlash. This compact solution utilizes the full load capacity of the valuable girth ring while providing maximum usability and. Helical gears are less efficient than spur gears and impose thrust as. The lubricant plays an important role the purpose of all design and tribotechnical efforts is to ensure, in spite of the enormous stresses, longterm, trouble free operation. A girth gear is divided into 816 segments, which are joined by bolts.
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. 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. Cm1 girth gear report gear mechanical engineering scribd. Worm gear manual gears and linear products since 1964.
The 2 contacting surfaces or gear meshing between pinion and girth gear will permanently adapt to each other. Great wall steel casting has large production capability in steel castings, so we can provide girth gear with short cast period and large amount. Kumera active drive will correct the alignment of the pinion and backlash can be adjusted. View and download polaris sportsman 400 service manual online. Somewhere between questions 1 and 2 the size of the gears must be determined through a ratingcalculation procedure. Industrial gear units girth gear series girth gears are used to drive large, rotating systems such as dryers, rotary kilns or horizontal mills. The david brown standard is a maximum temperature difference deltat of 6. The suggested tolerances shown on the following pages are general values based upon over 20 years of shaft alignment experience at. We are engaged in manufacturing and supplying girth gear, industrial girth gear, kiln girth gears. View and download polaris sportsman 600 service manual online. Gears can be made in a wide variety of forms, each with its own strengths and weaknesses.
Pitch represents the amount of pitch diameter in inches per tooth. The preferred procedure to assure those conditions is a hot kiln alignment, where all alignment measurements are taken when the kiln is under normal operating conditions. As a guideline for the alignment of large girth gear drives, the. Mwl, department of vehicle engineering, kth, se100 44 stockholm. The pinions are new but the girth gear is refurbished with two or three hand ground areas. Pcdmis cmm operation instruction for manual measurement. The david brown standard is a maximum temperature difference deltat of 6 degrees. The process of adjusting parts so that they are in proper relative position. If you do this before alignment, you can find cadpart button in the alignment utility window. Gear catalog falk vclass alignmentfree drives inch. The primary cause of damaged gear wheels is not exclusively the problem of faulty adjustment of the drives and. Ball mill girth gear and pinion alignment cr4 discussion thread. Terms and definitions of an open gear girth gears are manufactured from segments. Roller positions must be consistent with minimum ovalities, low support roller thrust loads, and a straight kiln axis.
Cm1 girth gear report free download as excel spreadsheet. 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 a manufacturer of a machine or coupling require tighter alignment tolerances, those should be used. Helical gears are like spur gears except that the teeth are positioned at an angle to the gear axis of rotation. Cement mill girth gear pinion alignment procedure pdf. Gear and pinion alignment our most recent inquiry from alan in the asiapacific region.
Install the cam gear alignment tool pu 45497 pu 45497 2 into one assembly hole counter. Download as xlsx, pdf, txt or read online from scribd. Ucd formula sae faculty, formula for calculating girth gear backlash pdf,fsae steering system 1 table of contents 1 abstract executive summary 2 2 final layout drawings of system and subsystems 3, there is very little backlash between the gears and operation of the system is quite smooth the final weight of the. Tooth alignment the most common girth gears are helical designs due to cost advantage. This instruction applies for bj worm gears size 42, 52, 61, 79 and 99.
Gears and how their world is changing by neville w. Design your gearbox with our free online designer tool. After instal lation, the teeth of a girth gear of 7. If you need large diameter girth gears in your process machinery, then you need a product you can rely on. Girth gears are used to drive large, rotating systems such as dryers, rotary kilns or horizontal mills. Alignment definition of alignment by the free dictionary. When a gear set must be turned because of wear, it is no longer possible to. Girth gears more than just metal and teeth steve lovell introduction. For the future, we are also planning to publish a gear calculation software. Mill and kiln gears 3 david brown mill and kiln gears rev. This study is focused on predicting the fatigue life expectancy of girth gear pinion assembly used in cement industries. Gear inspection is included in our hot kiln alignment services. Machinery alignment tolerance tables the suggested alignment tolerances shown here are general values based upon experience and general industry standards and should not be exceeded.
Bevel gears should be fastened to the shaft with keys and set screws, taper pins, step shafts, etc. Rotating equipment alignment methods and training youtube. Ball mill girth gear installation pdfsand making machine is the most widely used equipment in artificial sandball mill girth gear pinion alignment, filetype pdf. Feeco aftermarket engineers are highly skilled in assessing and performing alignments using the latest techniques in rotary kiln alignment methods, including the use of a laser tracking system. Gear design and modeling was carried out using a cad package and analysis. Girth gear and pinion alignment cr4 discussion thread. Installation of grinding mill girth gear and pinion. 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. Stern drive unit installation using the alignment tool.
Caution forcing the alignment tool into position may damage the gimbal bearing or engine coupler. The trick is to have the cartridge mounted so that the needle aligns perfectly on both dots without moving the protractor. A practical guide to shaft alignment plant services. 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. For purposes of measurement and calculation, backlash is defined as the amount by which a tooth space exceeds the thickness of an engaging tooth. The course covers several alignment methods common to motor shaft alignment like straight edge alignment, rim face alignment, reverse dial indicator alignment and laser alignment. 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. Intelligent gearing systemsolution to understand and.
The length is the distance the gear is rotated until the meshed tooth flank makes contacts while the other mating gear is held stationary. Home is where my turntable is and everyone should have a two point protractor. Girth gear pinion alignment filetype pdf marcopolosenago. Girth gears more than just metal and teeth gear technology. Distortions developing under the influence of load and. Diametral pitch is the imperial term for tooth size. This video shows how a girth gear is mounted on alignment fixtures, during girth gear reversal the alignment fixtures are handy and help us to. Select drive size locate the selection tables on pages 10 or 11 for the appropriate service factor and ambient temperature.
Guide values for adjustment and assembly the commission engineer of open gear drives is faced with toughest requirements when aligning or correcting the drive. Successful gear systems often depend as much on selecting the right gear for the job as on the proper design of the individual parts. Spiral bevel gears finished bore ksbs ground zerol bevel. As such you will find it is designed and constructed according to heavy duty specifications. An extremely precise alignment of the gears combined with the correct runningin procedures is essential.
The flexible concept from seweurodrive has simplified manufacturing, transport and assembly. Bim 1040 installation and maintenance instructions retain these safety instructions for future use inspection of unit thoroughly inspect the equipment for any shipping and handling damage before accepting shipment from the freight company. Size check select a gear coupling to connect a 500 hp, 1170 rpm electric motor. Department of machine design, kth, se100 44 stockholm. Ball mill girth gear and pinion alignment cr4 discussion. Bim 1040 installation and maintenance instructions usa retain. Kumera active drive ensures optimal load distribution on girth gear teeth throughout years of operation without a need for high accuracy alignment. Machinery alignment tolerance tables impact engineering. Industrial gear units, segmented girth gear seweurodrive. 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.
Kumera active drive girth gear ensures optimal load distribution on girth gear teeth throughout. In general, backlash in gears is play between mating teeth. The mill cannot have free rotation while stopping like as if its mounted on antifriction bearings,but there is no brake. Gear alignment is the most important technical procedure for optimum operation of two gears in mesh. David brown mill and kiln gears are manufactured to the highest standards in design, materials and workmanship. Careful alignment of the girth gear and of the transmission gear is of critical impor.