expression for roll load roll torque mill horsepower

  • How can we calculate the required torque to rotate 1200 kg

    How can we calculate the required torque to rotate 1200 kg of mass? , Don't forget to take into account the friction torque which depends directly on your load, friction coefficient and radius.

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  • How are current and voltage related to torque and speed of

    How are current and voltage related to torque and speed of a brushless motor? Ask Question Asked 6 years, 11 months ago Active , For the same motor, ideally if you apply double the voltage you'll double the no-load speed, double the torque, and quadruple the power This is assuming of course the DC motor doesn't burn up, reach a state which.

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  • A simplified method to calculate the rolling force in hot

    May 27, 2016· A simplified method to calculate the rolling force in hot rolling Authors; Authors and affiliations; Si Li; , The calculation of roll force and torque in hot rolling mills , (2013) Multi-factor coupling system characteristic of the dynamic roll gap in the high-speed rolling mill during the unsteady lubrication process.

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  • Experiments on ring rolling

    Printed in Great Britain EXPERIMENTS ON RING ROLLING W JOHNSON and G NEEDHAM Department of Mechanical Engineering, University of Manchester Institute of Science and Technology (Received 28 September 1967) Summary--Experiments were made in which lead rings were rolled on a model two-hlgh mill, and the roll torque, roll force, diametral strain.

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  • 2010 Ford Explorer Sport Trac Brochure

    RSC® (Roll Stability ControlTM),1 the industry’s only electronic stability control system with 2 gyroscopic sensors, including a unique vehicle-roll motion sensor The sensor measures the roll rate 100 times every second and determines when and how to apply brakes and modify engine power to help keep all wheels firmly planted a c b.

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  • Machining Center Spindles: What You Need to Know

    Jan 01, 2007· Machining Center Spindles: What You Need to Know , Obviously torque, speed and horsepower are important specs to evaluate when you’re getting ready to purchase a vertical machining center, but there are a few other considerations that will be critical to the overall performance of your spindle and your overall satisfaction with the.

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  • Understanding Variable Speed Drives (Part 2)

    As an example, a 1-hp motor operating at 1800 rpm will develop 292 lb-ft of torque Know your load torque requirements Every load has distinct torque requirements that vary with the load's operation; these torques must be supplied by the motor via the VFD You should have a clear understanding of these torqu Break-away torque: torque.

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  • Basics of Web Tension Control Summary

    1 = Nip roll velocity E = Elasticity of the material A = Cross sectional area of the material The larger the elasticity (E), the less likely the material is to stretch For most values of EA, use TORQUE CONTROL For stretchy material, where E is small, speed control can approach being as good as torque control.

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  • Controlling Your Web from Beginning to End

    The horsepower requirement is not linear with line speed For example, about 3 1 / 3 more horsepower is needed by the unwind motor to keep the web near constant tension when a 28-in-dia, 1,000-lb mill roll with 0125-in eccentricity is paying off at 600 fpm line speed But about 15 additional hp is needed when the line speed is increased to.

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  • Axial Thread Rolling For CNC Lathe Users : Modern Machine Shop

    Horsepower--In general, if the roll threading head can fit on the machine, there's enough horsepower , 5250 × hp = torque (ft/lbs) rpm Where: Constant = 5250 hp = 46 , Using the spindle load meter built into most CNC turning centers, the best rpm for an application can be determined.

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  • How are current and voltage related to torque and speed of

    How are current and voltage related to torque and speed of a brushless motor? Ask Question Asked 6 years, 11 months ago Active , For the same motor, ideally if you apply double the voltage you'll double the no-load speed, double the torque, and quadruple the power This is assuming of course the DC motor doesn't burn up, reach a state which.

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  • Duo Drive

    DuoDrive Talk about torque Pinch roll reducers use one worm on the power input shaft to turn two gears simultaneously, in opposite rotations Pinch roll reducers are designed for applications such as cold-roll forming, tube mills and wire mills, where very high torque is needed to smoothly propel metal through high pressure mill rollers.

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  • Torque and power requirement for roller

    Sep 14, 2014· Over the roller, a fabric in a roll form is loaded The fabric roll sits over this roller by means of gravity The roller has to drive the fabric roll on its circumference & feed the fabric end to another machine Problem: 1 What is the torque required to drive the roller at the shaft end 2.

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  • What Is the Formula for RPM?

    RPM is used with many key parameters such as diameter, mass and torque in fixed engineering formulas to calculate horsepower, linear velocity, gear ratios and tangential velocity Conversely, a number of measurements can be made in any given system to calculate RPM Since there is no one formula, several examples are provided below.

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  • Forming Processes

    May 31, 2014· Forming Processes - ROLLING - Numerical Problems with Solutions (solved) FORMING PROCESSES , Substituting the values of R, t f, and θ i in the expression for , So, the total driving torque for each roll is 1008 × 150 N-m = 15210 N-m Now.

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  • Milling Formulas and Definitions

    The Milling Process - Definitions Cutting speed,v c Indicates the surface speed at which the cutting edge machines the workpiece Effective or true cutting speed, v e Indicates the surface speed at the effective diameter (DC ap)This value is necessary for determining the true cutting data at the actual depth of cut (a p)This is a particularly important value when using round insert cutters.

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  • The Calculation of Roll Force and Torque in Hot Rolling Mills

    Equations are derived for the normal roll pressure, specific roll load and torque in hot rolling mills, using the condition for plastic deformation in rolling derived by Orowan, together with von Kármán's equation of equilibrium Although applying strictly to the rolling of ideal plastic-rigid materials, these equations may be.

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  • Motor Control Basics: Drive Operating Modes, Torque

    Motor Control Basics: Drive Operating Mod , A Velocity Mode Center Winder is an example application where low torque and high speed are required on a beginning roll and as diameter increases; rotational speed decrease is accompanied by an increasing torque requirement In higher HP applications using specially designed motors.

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  • Controlling Your Web from Beginning to End

    The horsepower requirement is not linear with line speed For example, about 3 1 / 3 more horsepower is needed by the unwind motor to keep the web near constant tension when a 28-in-dia, 1,000-lb mill roll with 0125-in eccentricity is paying off at 600 fpm line speed But about 15 additional hp is needed when the line speed is increased to.

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  • What's the difference between torque and horsepower

    Net horsepower is what's found by testing the same kind of stock vehicle you'd find at the showroom, and that's the measurement now used in advertising and manufacturer literature Horsepower is determined from torque because torque is easier to measure Torque is defined specifically as a rotating force that may or may not result in motion.

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  • Direct Current Motors and Drives 1/50

    4 baldor Baldor chooses to make a wide variety of SCR-Rated PMDC motors, each specifically designed to a horsepower range This optimizes the motor’s commutator, brushes and inertia to assure the best performance possible.

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  • Roll force, torque, lever arm coefficient, and strain

    Roll force and torque are derived by means of two independent integrals Thus, the lever arm coef-ficient is evaluated from the expressions for roll force and torque using conventional rolling theory.

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