calculate torque to turn a roll

Torque and power requirement for roller | Physics Forums

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.

newtonian mechanics - Torque required to turn a drum ...

Theoretically, zero torque is required to start the barrel turning as long as it starts out in equilibrium. To keep it turning at a constant speed, the required torque varies periodically with a time-average of zero. This assumes that there is no friction in the barrel and that the dirt doesn't roll around inside.

How to Obtain Rolling Torque? | Metals | Metallurgy

The working roll diameter is 500 mm. Determine the rolling load on the rolling stand if the co-efficient of friction is 0.07. Also determine the rolling torque. Solution: Example 2: A billet of area of section 150 mm x 150 mm is rolled to 120 height in a rolling mill with 600 mm roll

Drive Wheel Motor Torque Calculations

The Wheel Torque calculated in Step Five is the total wheel torque. This quantity does not change with the number of drive wheels. The sum of the individual drive motor torques (see . Motor Specifications) must be greater than or equal to the computed Wheel Torque. The Maximum Tractive Torque represents the maximum amount of torque that can be ...

Rotating Mass Torque Equation and Calculator - Engineers Edge

Rotating Mass Torque Equation and Calculator. General Engineering and Design Data Menu Industrial Electric Motor Application, Design and Installation Menu Industrial Electric Motor Supply. To determine a fan or blowers horsepower use the following equation. Equation: and. Open Calculator.

Motor Torque Calculations - NEPSI

Calculator-5. Known variables: Weight (lbs), Linear Velocity (ft/min), Speed of Driving Motor (RPM), Change in Speed (RPM), and Time to Accelerate Total System (sec) In addition to the torque required to drive the load at a steady speed, torque is required to accelerate the load. Accelerating Torque for Linear Motion. Input Weight, w (lbs) :

Basics of Web Tension Control Summary

• Use a torque device to control tension Summary (do’s and don’ts) • Make sure web does not slip through nips • Don’t use manual controls on center unwinds • Beware of diameter calculator controls • For indexing or out-of-round roll applications use a dancer system • Don’t control tension on the device setting line speed

Bolt Torque Calculator - engineeringtoolbox

Bolt Torque Calculator. The calculator below can be used to calculate the torque required to achieve a given axial bolt force or load. The calculator is generic an can used for imperial and metric units as long as the use of units are consistent. K - constant. d - diameter of bolt (m, ft) F -

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

I would like to calculate torque to rotate 1200 kg of mass which is attached in 1.5" dia shaft. Shaft is supported by 2 bearings at its end. Neglect bearing frication.

Useful Motor/Torque Equations for EML2322L

Calculate the Torque required to lift the Force with the lever arm . T = F x d = 49.05 N x 0.5 m = 24.525 N-m . We cannot perform the lift with this set-up, because the stall torque is smaller than . the torque required for the lift. We must either shorten the length of the lever arm,

THE MECHANICS OF TENSION CONTROL

Torque required to provide a certain level of tension to a web is total tension measured across the web times roll radius. This means the torque driving the unwind shaft must decrease at a linear ratio, relative to roll diameter, as an unwind roll decreases in size, through a machine run, to keep tension constant. Conversely, the torque driving the

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

I would like to calculate torque to rotate 1200 kg of mass which is attached in 1.5" dia shaft. Shaft is supported by 2 bearings at its end. Neglect bearing frication.

Rotating Mass Torque Equation and Calculator - Engineers Edge

Rotating Mass Torque Equation and Calculator. General Engineering and Design Data Menu Industrial Electric Motor Application, Design and Installation Menu Industrial Electric Motor Supply. To determine a fan or blowers horsepower use the following equation. Equation: and. Open Calculator.

Motor Torque Calculations - NEPSI

Calculator-5. Known variables: Weight (lbs), Linear Velocity (ft/min), Speed of Driving Motor (RPM), Change in Speed (RPM), and Time to Accelerate Total System (sec) In addition to the torque required to drive the load at a steady speed, torque is required to accelerate the load. Accelerating Torque for Linear Motion. Input Weight, w (lbs) :

Useful Motor/Torque Equations for EML2322L

Calculate the Torque required to lift the Force with the lever arm . T = F x d = 49.05 N x 0.5 m = 24.525 N-m . We cannot perform the lift with this set-up, because the stall torque is smaller than . the torque required for the lift. We must either shorten the length of the lever arm,

How to calculate the torque required to rotate a cylinder ...

You have missed out some other detials that are necessary like, is the time to achieve that rpm, is the initial state rest, about which axis is the cylinder rotating. But I will assume the time to be 60 sec (time is necessary to convert rpm to ang...

Roll Length Calculator | Good Calculators

Roll Length Calculator When you have material rolled up into a cylinder, you can swiftly and simply calculate its length using this roll length calculator. How to use: Simply input measurements for the inner and outer dimensions of your roll of material and how thick the material is, and then click "Calculate".

Basics of Web Tension Control Summary

• Use a torque device to control tension Summary (do’s and don’ts) • Make sure web does not slip through nips • Don’t use manual controls on center unwinds • Beware of diameter calculator controls • For indexing or out-of-round roll applications use a dancer system • Don’t control tension on the device setting line speed

Motor Selection Guide : Motorized Blinds & Shades ...

By definition: if the same weight is hanging on a 2 inch radius, the torque applied to the tube is equivalent to 2 in. lbs. (see figure 2). Therefore, the torque generated by the same weight doubles when the tube radius doubles. There is a direct relation between torque and roller tube radius as shown in figures 1 & 2. Theoretical Lifting Capacity

Designing Unwind Tension Control | New Era Converting

By coupling the motor’s shaft to the unwind roll, the torque required to rotate the shaft is used to provide the force needed to generate the web tension. As the motor’s excitation current is varied so is the torque required to turn the motor’s shaft, allowing the web tension to be varied.

roll torque due to tension - Gear & Pulley engineering ...

Nov 03, 2008 · roll torque due to tension sf1 (Mechanical) (OP) 30 Oct 08 18:11. Hello, I would like to know how to calculate the torque required to turn a roll which is supported symmetrically at both ends by bearings. A load is placed in the center of the roll due to the tension developed in the belt by the take up system on the other side of the conveyor.

Turning Horsepower Calculator - CustomPart.Net

Turning Horsepower Calculator. Calculate the horsepower required for a turning operation based on the feed rate, depth of cut, and cut diameter, which will determine the material removal rate (or metal removal rate). Also required is the unit power, which is a material property describing the amount of power required to cut that material.

Motor Sizing Basics Part 3: Speed, Acceleration Torque ...

The total required torque is the sum of the load torque and acceleration torque as shown below (with a safety factor to cover for what we don't know). Mathematically, acceleration torque is made up of load inertia and acceleration rate as shown below. This is the most common equation used to calculate acceleration torque for all types of motors.

Tech 03 Springs Roll Stiffness - ISMA Supers

The first is the roll angle which is the angle, side-to-side, the car seeks as the turn is entered and as the car proceeds through the turn. If there is a roll angle, there MUST be a center ... roll stiffness is the torque on the chassis to cause a certain roll angle. ... Now you can calculate roll stiffness using Equation 3. In our example s/2 ...

Torque Conversion Calculator - Good Calculators

Torque Conversion Calculator. You can use this free torque conversion calculator to easily convert a range of torque measurement units including pound-force inches, Newton meters, kilogram-force centimeters, ounce-force inches, kilogram-force meters, among others. Input the value that you wish to convert. Choose the units of torque measurement ...

How to calculate the torque required to rotate a cylinder ...

You have missed out some other detials that are necessary like, is the time to achieve that rpm, is the initial state rest, about which axis is the cylinder rotating. But I will assume the time to be 60 sec (time is necessary to convert rpm to ang...

Calculator for Rolled Length of Roll of Material

Calculates the rolled length of a roll of material when the outside diameter of the material, thickness of the material, and the diameter of the hole in the center or

Bolt Torque & Preload Calculator | MechaniCalc

The Bolt Torque & Preload calculator can be used to calculate the torque required to achieve the desired preload on a bolted joint. See the reference section for

Torque Conversion - Unit Converter Online

Torque, moment of force or moment, is the tendency of a force to rotate an object about an axis, fulcrum, or pivot. In Mathematical, torque is defined as the cross product of the lever-arm distance and force, which tends to produce rotation. Simple speaking, torque is a measure of the turning force on an object such as a flywheel or a bolt.

Center Driven Winders & Unwinders | Tension & Speed Control

Diameter based torque, from an external source or by calculation provides the torque reference required to maintain constant tension as the roll package builds to maximum diameter. When calculating diameter using winder motor speed, a memory circuit can hold the diameter information until reset so that stopping and restarting a partially built ...

Web Tension Control Fundamentals - Paper, Film & Foil ...

Jan 25, 2019 · In a center wind application the control setpoint must be modified by the actual roll diameter to achieve the correct torque at the shaft. The diameter information can come from an external sensor or a diameter calculator. Tension accuracy will be directly dependent on the value of the systems diameter information.

Calculate Torque from Force & Lever Arm Length

Related Tools. Convert torque into different units; Convert force into different units; Convert length into different units; User Guide. This tool will calculate the torque generated around an axis by a force applied at right angle to a lever arm of a specified length.

Torque (Moment) - NASA

May 13, 2021 · The torque is then given by: T = F * L * cos (a) Examples 1 and 2 can be derived from this general formula, since the cosine of 0 degrees is 1.0 (Example 1), and the cosine of 90 degrees is 0.0 (Example 2). In Example 4, the pivot has been moved from the end of the bar to a location near the middle of the bar.

Lead Screw Torque and Force Calculator - Daycounter

Lead Screw Torque and Force Calculator. When designing machinery that uses lead screws, it's a common task to try and figure out the size of motor needed to drive a given force with a lead screw. This calculator will calculate torque given the lead screw parameters and the required force. There are two torques the torque to raise the load and ...

TENSION CONTROL AND WINDER - Dynamatic® OEM

As stated above, the torque must increase directly with diameter increase. This can be accomplished by using a rider roll or lay-on roll operated potentiometer to adjust the torque of the drive. This potentiometer would swing the torque from a preset core value to a preset full roll value. The major disadvantage of this system is the

Motor Torque Speed & Power, Wheels, and Winches

The minimum torque needed to completely stop the motor shaft from rotating (this is called ... If the wheels roll without slipping no power is dissipated by friction between the wheels and ... Assuming no internal friction the wheel will turn at Wn. The speed of the vehicle will be rWn. Motor, Wheel & Winch Calculations Page 5 of 6 Case 2: Free ...

Tapping Speeds & Torque Requirements

TORQUE REQUIREMENTS Tap Size Brass Aluminum and Leaded Brass 200 BHN Steel 300 BHN Steel 400 BHN Steel Approximate Breaking Torque #6 4 2 7 9 10 8 #8 4.5 2.25 8 10 11 30 #10 8.5 4.25 15 19 21 42 1/4 16 8 28 36 40 106 5/16 24 12 42 54 60 180 3/8 37 18.50 65 83 93 240 7/16 54 27 94.5 122 135 500 1/2 68 34 119 153 170 700

SOLID MECHANICS DYNAMICS TUTORIAL - GYROSCOPES

If the torque is applied about the z axis, the result will be rotation about the y axis and this is called precession. Figure 4 If the torque is not applied and the rotation is made to happen (applied), a reaction torque will be produced (Newton's 3 rd. law) and the disc will respond to the reaction torque.

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