# expression for roll load roll torque mill horsepower ### The calculation of rolling force

26/03/2020 · Factors which influence the rolling force Yield strength The main factor influencing the rolling force required to reduce the thickness of strip in a rolling mill is the yield strength of the material being rolled. The calculation of yield strength depends upon a wide range of factors. These are: composition previous work done on the material ### calculationof torque for grinding mill

Grinding Mill Horsepower Calculation. Grinding Mill Horsepower Calculation. Expression for roll load roll torque mill horsepower calculation of torque on grain mill ilcapricciofalisollecalculation of torque for ball mill, 2015 ball mill speed the calculation of roll force and t ball mill is the key equipment for grinding after the crushing process, which is widely used in . The load magnitude can be found by using or formulas (), through (). K t＝ ×106・H DN p・n ＝ ×106・H ｛kgf｝ ..（） D p・n Bearing Load Calculation A22 (2)Loads acting on cross shafts Gear loads acting on straight tooth bevel gears and spiral bevel gears on cross shafts are shown in Figs. ### Motor Calculations

rot= rotational mechanical power M = torque ω = angular velocity The most commonly used unit for angular velocity is rev/min (RPM). In calculating rotational power, it is necessary to convert the velocity to units of rad/sec. This is accomplished by simply multiplying the velocity in RPM by the constant (2 x π) /60: = × 60 2 /sec The distance from a point on the screw thread to a corresponding point on the next thread measured parallel to the axis. β = The thread profile angle. The angle between the flanks of the thread measured in an axial plane. φ = Lead angle (helix angle) of the thread. The angle of the thread at a pitch diameter with a plane perpendicular to the ... ### 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 ### Horsepower Calculator

Horsepower. Horsepower is a unit of measurement of power developed by engineer James Watt in the late 18 th century. Although its original purpose was to compare the output of steam engines with the power of horses (hence its name), it has since been adopted as a unit of measurement for all sorts of engines used to power things such as vehicles, lawn mowers, . ### Ball Mill Design/Power Calculation

19/06/2015 · The approximate horsepower HP of a mill can be calculated from the following equation: HP = (W) (C) (Sin a) (2π) (N)/ 33000. where: W = weight of charge. C = distance of centre of gravity or charge from centre of mill in feet. a = dynamic angle of repose of the charge. N = mill speed in RPM. HP = A x B x C x L. Where. ### Torque and power requirement for roller | Physics Forums

14/09/2014 · 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. What HP of motor, we should select to drive the shaft, if the motor is directly connected (without any gear box) to the 25mm dia shaft. ### Motor Sizing Basics Part 4

When pulleys, belts, gears, sprockets, chains, etc. are used as the transmission mechanism, the dynamic radial load is calculated with the following equation. W = T / y. With a belt conveyor, the motor torque provides the driving force that generates work. This is shown as T, which is the amount of torque in N·m. ### Solved B1) A plate (20mm thick, 200 mm wide) is rolled to 18

Question: B1) A plate (20mm thick, 200 mm wide) is rolled to 18 mm thick in one pass. Given: Roll radius = 250 mm and rotational speed = 12 rev/min. The work material has a strength coefficient = 600 MPa and a strain exponent = a) Sketch the operation and show any motion with arrow (s) b) Determine roll force, roll torque, and power ... ### ROLLING

• Roll Force: F= LwY avg •Rollstrip contact length L •Contact length •Average strip width w –despite the fact that spreading, or an increase in width, may actually occur if edger mills are not used •Average true stress of the strip in the roll gap Y avg •Assumes no friction and thus predicts lower roll force than the actual value ... ### Electric Motor Torque Calculation Formula Torque Calculator .

AC 1 HP singlephase AC motor has an input voltage of 230V, the input current of Amps and working at 2500 rpm, pf, load. Calculate the torque of the motor. Apply our formula 1, T () = 230 x x x / (2 x x 2500 / 60) = The torque produced by the motor is Nm. Hence 1 HP motor can produce ### Conveyor Power and Torque Calculator

Conveyor Power and Torque Calculator. Calculate the power and torque needed to move a load at a certain speed, flat or up a slope. ... Use this calculator to calculate the force, torque and power required from a conveyor to move a load at an angle. If your conveyor is horizontal enter an angle of 0. ... RPM OF DRIVE ROLLER: RPM. FORCE: TORQUE ... ### Kennametal® Milling Torque Calculator

Calculate Tangential Force, Toque, and Machining Power for Face Milling Appliions. These calculations are based upon theoretical values and are only intended for planning purposes. Actual results will vary. No responsibility from Kennametal is assumed. Metric Inch. ### Horsepower calculation

In order to calculate horsepower, it is necessary to determine the resultant force (R) due to the weight (W) acting at incline angle (a) Force (R) equals Weight (W) multiplied by sine (a). Sines of common incline angles are listed in weights and tables. The force (T) required to move the load is the sum of the resultant force (R), plus the ... ### steel rolling mill speed calculation formula

The Calculation of Roll Force and Torque in Hot Rolling Mills Know More. 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...