journal of drive coupling for mill roll

Performance enhanced cardan shaft drives for cold rolling
For conventional rolling mill drives the joints of the upper and lower shafts are arranged directly above one another The maximum possible roll side joint diameter is obtained based on the minimum work roll diameter For highly loaded drives the work roll diameter and joint diameter are generally the same.
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Vibration analysis of a Sendzimir cold rolling mill and
Abstract The presence of several rolls in cluster cold rolling mills makes on line vibration monitoring and failure analysis difficult The dynamic behaviour of rolls strongly depends on the rolling pressure in the roll bite Strip vibration applies a dynamic component on the rolling force acting on the work roll and may excite the resonance of the mill stand.
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BALL MILL GEARBOX PROBLEMVibration
BALL MILL DRIVES LOADED WAVEFORM LEVELS SEPTEMBER 1A 1B Above is a plot of the waveform vibration levels at both the 1A 1B ball mills when loaded acceleration Note how waveform levels at 1A ball mill are higher than that at 1B ball mill for every measurement and especially at points PIH PIA pillow block coupling end bearing .
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DESIGN ANALYSIS OF UNIVERSAL JOINT SHAFT FOR ROLLING
Jul 02 2014 design analysis of universal joint shaft for rolling mills 1 project report on design analysis of universal joint shaft for rolling mills submitted to rashtrasant tukadoji maharaj nagpur university nagpur m.s in partial fulfillment of the bachelor s degree in mechanical engineering submitted by ankit anand 22 m mukesh 39 mohit kathoke 46 sughosh deshmukh 68 vasukarna jain 74
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DESIGN ANALYSIS OF UNIVERSAL JOINT SHAFT FOR ROLLING
Jul 02 2014 The performance of the rolling mill depends on the Universal joint shaft through which the power is transmitted to the rollers of a mill This report mainly focuses on the analysis of universal joint shaft for rolling mills because this shaft is subjected to vibrations caused due to the jerk produced during the passing of billet through
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Driveshafts for Industrial Applications
28 Series 330 Quick release couplings 29 Series 230 Quick release couplings 30 Journal cross assemblies 31 Flange connection with serration 32 Face key connection Main rolling mill drive units Heavy machinery construction plants Technical data refer to data sheets
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Development of Hydraulic Expansion Type Torque Limiter for
Steel Mill Large Size Driveshafts 1 Introduction Cross shaft type universal joints here after described as UJ are used not only for automobile propeller shafts but also for coupling system of all industrial machine shafts Among them the UJ for roll drives under rolling mills is often used in high load regions against the loading
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Investigation into the electromechanical coupling
Oct 11 2002 Journal of Materials Processing Technology Volume 129 Issues 1–3 11 October 2002 which leads to the violet vertical vibration of the drive mill G.L Nessier J.F Coryr Cause and Solution of Fifth Octave Backup Roll Chatter on 4 h Cold Mills and Temper Mills vol 14 no 12 ALSE Year Book 1989 pp 33–37
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Introduction to Rolling Process Chapter 1 Principles
The rolls are rotated in opposite direction by means of electrical drive system motor gearbox spindle and couplings Depending on the direction of rotation of the rolls the input material enters the gap between the rolls from one end and comes out from the other end with a reduced cross section the roll gap area being kept less than the
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A study of nonlinear coupling dynamic characteristics of
The mill is connected to the drive system via a universal coupler which the 2 DOF lumped parameters model between the mill and the drive system is shown in Figure 2 The rolling force and the torque are generated by the mill while in the process of rolling strip and transmitted to the gearbox by the coupler thereby imparting a counter torque
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Board and paper machine rolls Valmet
Maximum performance with high quality rolls With over 50 years of roll manufacturing experience innovative R D and the process know how of a paper machine builder Valmet offers highly reliable roll solutions that provide maximum performance and extend maintenance intervals. The latest manufacturing technology and strict tolerances result in high quality products with excellent operating
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Impact of main drive system of 5 m wide and heavy plate
Abstract Universal couplings cause additional moments on the sleeve shaft of work roll The problem becomes more obvious in the wide and heavy plate mill due to the large tilt angle and the great rolling torque which may affect the deflection of roll system and the screw down load deviation Aiming at the structural characteristics of the drive system of a 5000 mm wide and heavy plate mill
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Soil Burial Study of Palm Kernel Shell Filled Natural
Palm kernel shell PKS was incorporated into natural rubber composites at loadings ranging from 0 to 20 phr using a laboratory size two roll mill A soil burial study of the PKS filled NR composites as a function of filler loading and silane coupling agent incorporation was then conducted over a period of six months.
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PDF Mathematical modeling of vertical movement of the
An explanation is given for the cause of extra forces generated at a square box coupling for mill drive and describes how these forces can be reduced Several top roll shafts failed in service
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ROLLING MILL SPINDLESCasey USA
Rolling mill spindles are used to transfer the power from a gearbox or pinion stand to a set of mill rolls when a direct connection is not feasible or practical Spindles are chosen based on their particular application for torque and speed Most smaller diameter spindles are made from 4140 grade high strength steel bar while many larger
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Understanding Journal BearingsEDGE
every occurrence of daily life from the watch on your wrist to the automobile you drive to the disk drive in your computer In industry the use of journal bearings is specialized for rotating machinery both low and high speed This paper will present an introduction to journal bearings and lubrication Lubrication technology goes hand in hand with
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Radicon Products Radicon Drive SystemsAn elecon group
CUSTOM BUILT GEAR BOX FOR CALENDAR DRIVE Mixer Drive Gear Box Single Input Double Output shaft 18 OUTPUT SHAFT GEARBOX FOR SRM TUBE DRAWING MILL GEAR UNIT Special Helical Gear box for Palm Oil Mill Drive Application Small Medium Wind Turbine GearboxesSBH 410/S SBH 280/80 Medium Wind Turbine GearboxSDNK 1400.
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Nonlinear Coupling of Pitch and Roll Modes in Ship Motions
May 23 2012 Nonlinear Coupling of Pitch and Roll Modes in Ship Motions All H Nayfeh Dean T Mook and Larry R Marshall All H Nayfeh ia Polytechnic Institute and State University Blacksburg Va Search for more papers by this author Dean T Mook.
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Handling shaft deflection runout vibration axial motion
forth within the available clearance Figure 4 Although Figure 4 illustrates a journal bearing for the sake of simplicity many rolling element bearings also have internal and mounting clearances Some types of bearings such as angular contact X type four point contact and tapered roller bearings have little or no internal clearance which
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PDF Failure Analysis of Rollers in mill stand using
fatigue cracks induced by corrosion etc Thermal Breakage This is either a mill or roll fault The barrel is broken showing radial oriented Journal Failure from Drive End Torque fracture lines whose origin is at or near to the axis of The torque on the drive end has exceeded the the barrel.
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A Review on Chatter Analysis in Cold Open Access Journal
17 Defective work roll bearings Radial loads when applied to bearings through roll bending or unbalance or eccentricity of the rolls 18 Inter stand coupling 19 Chatter affected strip entering the mill
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DEA1Facilitating de coupling of rolling mill
Device assists the coupling and uncoupling of articulated spindles in rolling mill plant esp wobbler spindles in hot pilger rolling mills in which the drive side end of the spindle has a coupling box for a journal has a support clamp that may be fixed and that is adjustable for height by operation of a position drive The support is divided in to two clamping segments partially surrounding
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WDM RollsUsers and Suppliers
WDM COMPONENT SUPPLIERS Allen BradleyElectrics Auburn GearPlanetary Drives BrowningDrive Components Char Lynn/Eaton CorpLSHT Hydraulic Motors Commercial IntertechHydraulic Components Earle M JorgensonSteel Supplier EskridgePlanetary Drives Hoffman
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Coupling Dynamic Model and Control of Chatter in Cold
Apr 24 2012 Coupling Dynamic Model and Control of Chatter in Cold Rolling Xu Yang The dynamic model of 4 h mill which couples with the rolling process model the mill roll stand structure model and the hydraulic servo system model is built by analyzing the vibration process of cold rolling Torsional Vibration Control of the Main Drive System
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R W couplings in Pipe Production R W America Couplings
Roll stand performance requirements for steel pipe production are very high Pipe diameters of up to 1 800 mm are continually subjected to measurement and quality controls during the production process The drive performance in this case lies in the high torque range. Overload couplings with an automatic re engagement function are used between the transfer units and the rollers driven in the
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FAST S Gear Couplings Size 1 1/2 through 30
50 Why Specify FAST S Gear Couplings The FAST S design with its lifetime All Metal End Ring provides up to 300 greater lubricant capacity.This means that longer periods between relubrication may be scheduled and should a periodic
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Development of Hydraulic Type Gap less Coupling for
Koyo Engineering Journal English Edition 63E 2003 49 1 Introduction In rolling mills for steel or nonferrous metals the connection of the roll with the drive shaft hereinafter referred to as DS is usually performed by inserting the roll edge into the coupling cavity on the DS side The roll section on the coupling side is generally
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Hopf bifurcation control of nonlinear electromechanical
Apr 20 2020 The nonlinear dynamic model of electromechanical coupling main drive system of rolling mill with nonlinear stiffness and frictional torque is established The equilibrium point of the system is analyzed the conditions of the Hopf bifurcation of the system are given and the type of the bifurcation is studied The Hopf bifurcation controller is obtained by using the exact feedback
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Rolling Mill Rolls Xtek Inc.
Rolling Mill Rolls Xtek has manufactured Forged and Specialty Rolls for over 70 years Special steel chemistries coupled with unique and proprietary heat treating methods have led to products with superior metallurgical properties and are the reason that Xtek is one of the leading suppliers of Forged and Specialty Rolls for many rolling mill
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Vertical horizontal coupling vibration characteristics of
The vibration of the rolling mill affects the accuracy of products which becomes one of the key factors It can be divided into vertical vibration 3 14 15 free transverse vibration 16
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FAILURE ANALYSIS GEARS SHAFTS BEARINGS SEALS
NON RESILIENT COUPLING RESILIENT COUPLING TIME TYPICAL TORQUE IN STEEL MILL DRIVE FLUCTUATING LOAD TWO CYLINDER GAS COMPRESSOR ORQUE ZERO TORQUE TIME FAILURE ANALYSIS GEARS SHAFTS BEARINGS SEALS Vibratory loads or system dynamic loads depend on the interrelation of the components in the entire system with one
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PDF Effectiveness of Flexible Pin Type Couplings
The tests were carried out on the machine MI 20UM MI 20 UM testing machine 1 Pool couplings 2 produced by the Voith 2 ISSN ISO 9001 2008 Certified International Journal of Engineering Science and Innovative Technology IJESIT Volume 4 Issue 2 March 2015 where Pmax.=20kN with mechanical drive group which was previously
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Modelling of the interaction of slabbing mills during the
Sep 01 1989 Journal of Mechanical Working Technology 19 1989 275 Elsevier Science Publishers B.V AmsterdamPrinted in The Netherlands MODELLING OF THE INTERACTION OF SLABBING MILLS DURING THE SIMULTANEOUS ROLLING OF SLABS IN BOTH ROLL PAIRS WLADYSLAW DOBRUCKI RYSZARD GREGORCZYK and STANISLAW ZAWADA Instytut Maszyn
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