In most cases, the mechanical accuracy of the gear blank is taken for granted and, after all, preparing a gear blank normally consists of. Temporary repairs of crack and wear on girth gear and pinion. Its normally fixed in the outer sphere of the metal shell. Diametral pitch is the imperial term for tooth size. Cm1 girth gear report gear mechanical engineering scribd. Girth gear is the key component to support the transmission system stability of rotary kiln and ball mill. Heavyduty comminution requires heavyduty equipment and our maag gear girth gears are up to the task. So, the quality requirements during the actual production for the big gear ring are very high. Rotating equipment alignment methods and training youtube. Rotating girth gear using alignment fixtures duration. Formulas for gear calculation external gears contents. Great wall steel casting has large production capability in steel castings, so we can provide girth gear with short cast period and large amount.
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. Check where to position a dial gauge to measure radial runout of a girth gear, hope this helps, thanks for viewing. Adobe acrobat reader dc download free pdf viewer for. Kumera active drive will correct the alignment of the pinion and backlash can be. Helical gears are stronger and operate more quietly than comparable size spur gears.
The pinions are new but the girth gear is refurbished with two or three hand ground areas. Pitch represents the amount of pitch diameter in inches per tooth. 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. Once the correct cam gear to hub position has been found, install all seven cam gear bolts. Jan 07, 2018 check where to position a dial gauge to measure radial runout of a girth gear, hope this helps, thanks for viewing. Successful gear systems often depend as much on selecting the right gear for the job as on the proper design of the individual parts. It will engage idler gear teeth and allow the cam gear bolts to exactly align with hub bolt holes in only one position. Laser alignment is an essential component of a viable maintenance. Terms and definitions of an open gear girth gears are manufactured from segments. A complete range of gear and pinion sets, inspections, design, installation and alignment services to drive your mills performance.
Gear alignment is the most important technical procedure for optimum operation of two gears in mesh. Open gear drives do the heaviest krupp polysius ag work in many branches of industry. Falk vclass alignment free drive to learn more about the new falk vclass. Start the engine, release the clutch and shift over to 1st gear the motorcycle should remain motionless. Idler gears are used to transmit torque over longer distances than would be practical by using just a single pair of gears. The adjustment shown on page 8 is to be done after inserting undertyre shims on 2nd and 3rd tyre. 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. Bevel gears should be fastened to the shaft with keys and set screws, taper pins, step shafts, etc. David brown mill and kiln gears are manufactured to the highest standards in design, materials and workmanship. This type is suitable for rotary kiln and ball mills as transmission gear. 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. Generally use gear root as alignment reference, and weld girth gear with spring plate through electric welding.
Create, view, edit, annotate, ocr and digitally sign pdf files plus much more editor plus license includes ability to create and edit fillable forms includes pdf xchange lite printer. A girth gear is divided into 816 segments, which are joined by bolts. Ball mill girth gear and pinion alignment 08272011 2. Girth gears with durable, heavyduty performance flsmidth. The selection and application of lubricants for rotary kiln. 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. Girth gears are used to drive large, rotating systems such as dryers, rotary kilns or horizontal mills. As a guideline for the alignment of large girth gear drives, the. An idler gear is any intermediate between input and output gear which does not drive any output work shaft. This compact solution utilizes the full load capacity of the valuable girth ring while providing maximum usability and. After instal lation, the teeth of a girth gear of 7. This study is focused on predicting the fatigue life expectancy of girth.
Metso is proud to announce the launch of our new rebranded offer. Vertical and horizontal axis kiln crank analysis tire wobble range shell test girth gear and pinion worn outwobble gear, pinion and drive alignment. 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 the gears size 110 and proceed with the substitution of the oil after the first 300 working hours, replacing it with the correct quantity in accordance with the assembly position, as detailed in our catalogue, after the inside of the gear has been thoroughly washed. Cement mill girth gear pinion alignment procedure pdf. The motor drives the pinion and pinion drives the girth gear mounted on the cylinder shell, because of this, the ball mill start driving.
Pdfxchange editor editor plus pdfxchange converter. Improper alignment results in excessive vibration, short life of driven equipment compound bearing and coupling clutch parts, and frequent re 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. 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. A remote transceiver is also available for automatic download during remote inservice load measurements. Ball mill girth gear installation pdfsand making machine is the most widely used equipment in artificial sandball mill girth gear pinion alignment, filetype pdf. Mill and kiln gears 3 david brown mill and kiln gears rev. We are engaged in manufacturing and supplying girth gear, industrial girth gear, kiln girth gears. Girth gear pinion alignment filetype pdf marcopolosenago. First of all, the rollers on 1st support halto be shifted for 8 mm inside direction. Under ideal conditions, the gear and pinion teeth should not wear. Delivery and installation of girth gear, pinion, fixation system and drives. The tooth engagement exerts forces detrimental to the mill.
Girth gear and pinion alignment cr4 discussion thread. Gears and how their world is changing by neville w. Guide values for adjustment and assembly the commission engineer of open gear drives is faced with toughest requirements when aligning or correcting the drive. Industrial gear units girth gear series girth gears are used to drive large, rotating systems such as dryers, rotary kilns or horizontal mills. Introduction to gear design chapter 2 what kind of gears should i use. The trick is to have the cartridge mounted so that the needle aligns perfectly on both dots without moving the protractor. Girth gear is with super large diameter, the module is more than 10mm.
Girth gear is an important transmission part of rotary kiln and ball mill equipment. Pdf fatigue life prediction of girth gearpinion assembly. Ball mill girth gear and pinion alignment cr4 discussion. For most highspeed gear couplings, an expensive filter and guard are needed for forced lubrication and oil recovery, but these are not required for formflex couplings. On this page you can download free cartridge alignment protractors for quick and accurate alignment of cartridge stylus overhang, offset and null points. The cam gear is now installed onto the cam hub, with no bolts as yet. Size check select a gear coupling to connect a 500 hp, 1170 rpm electric motor. With the exception of section b, gear alignment, removal of guards is not required to successfully utilize these procedures. Gears can be made in a wide variety of forms, each with its own strengths and weaknesses. 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.
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. As such you will find it is designed and constructed according to heavy duty specifications. Cylindrical spur gears with standard profile cylindrical spur gears with corrected profile without centre distance variation with centre distance variation. 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. The selection and application of lubricants for rotary kiln girth. Install the cam gear alignment tool pu 45497 pu 45497 2. Gearing installation and alignment the only available option for lessening the impact of high cost gearing is to stretch your amortization. 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. Download free adobe acrobat reader dc software for your windows, mac os and android devices to view, print, and comment on pdf documents. Girth gear industrial girth gear and kiln girth gears. Home is where my turntable is and everyone should have a two point protractor.
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. The low speed and high speed gears that are fitted on the transmission main shaft or gearbox shaft do not rotate because they are not engaged with any driving gears. Open gear drives are very common in the raw materials industry. The girth gear drives that are used in tube mills, coolers, washing drums, kilns, calciners and other machines have to transmit enormous torques i. I had a few friends confirm this with scaling off so i am not sure if anyone ever raised an issue with the pdf but that seems to. They should be used only if no other tolerances are prescribed by existing inhouse standards. Ball mill girth gear and pinion alignment cr4 discussion thread,can someone. Helical gears are less efficient than spur gears and impose thrust as. Kumera active drive girth gear ensures optimal load distribution on girth gear teeth throughout. The smallest, fastest, most featurerich free pdf editorviewer available. Your heavyduty processes need components that are up to the task and our maag gear girth gears deliver highperformance for your mill or kiln.
Fatigue life prediction of girth gearpinion assembly used in kilns by finite element analysis. Spiral bevel gears finished bore ksbs ground zerol bevel. 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. Hot kiln alignment and measuring beside the visual inspection of your equipment, we also apply advanced measuring techniques for a wide range of measurements on all rotary equipment. Due to its inclination 118 and a lifter flights system, the dryer operating at 2. The girth gear cracking usually initiates from a defect in. Somewhere between questions 1 and 2 the size of the gears must be determined through a ratingcalculation procedure. 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. Ideal conditions include adequate lubrication of the correct type, perfect alignment, constant bill hankes, ac equipment services, usa, explains why it is essential to minimise.
Girth gears more than just metal and teeth gear technology. Gear and pinion alignment our most recent inquiry from alan in the asiapacific region. Gear theory boston gear rack and pinion catalog1 schlenkent. A s well a3 delicate alignment problems, tendency to mill position shift and impairment of running. Dec 28, 2017 have you ever seen a kiln girth gear with 14 jointscheck it out here in this video. Fatigue analysis of girth gear of a rotary dryer sciencedirect.
Industrial gear units, segmented girth gear seweurodrive. Large diameter internal ring gears for heavy duty equipment, high precision gears big size. A practical guide to shaft alignment plant services. The selection and application of lubricants for rotary kiln girth gears and pinions conference paper april 20 with 8 reads how we measure reads. Repair and refurbishment our repair and refurbishment team provides handson gear service including. Helical gears are like spur gears except that the teeth are positioned at an angle to the gear axis of rotation. Data to enable the evaluation of gear alignment in the form of the relative load intensity distribution factor, kh. Free turntable cartridge alignment protractor and speed discs. View and download ural motorcycles 750cc series repair manual online. Bechem products convince by innovative formulations. View and download polaris sportsman 600 service manual online.
The flexible concept from seweurodrive has simplified manufacturing, transport and assembly. Cm1 girth gear report free download as excel spreadsheet. The suggested tolerances shown on the following pages are general values based upon over 20 years of shaft alignment experience at. This problem may not be identified during a cold alignment check. 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. Relationship between the involute elements determination of base tooth thickness from a known thickness and viceversa. There are 7 bolt holes and, therefore 7 possible positions. It is only natural that this kind of force subjects the gear wheels to very high stresses. Idler gears are also used to reverse the direction of the rotation of the final gear. This manual needs to be available for use during installation of the girth gearing supplied. Ball mill girth gear and pinion alignment cr4 discussion thread. Make rotary kiln girth gear in the basically correct position, turn the kiln body, use dial indicator to measure the radial and endon jerk value. Falk vclass alignment free drives inch download the most uptodate.
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