### calculate torque to turn a roll

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

اقرأ أكثر...### How to calculate torque needed to spin propeller? : r/AskEngineers

estimate the mass, calculate the required thrust (thrust to weight ratio) Which gives me mass flow rate/ propeller RPM Use power and the motor constants to determine torque Assume some sort of efficiency in the propeller to determine required …

اقرأ أكثر...### torque-roll-axis calculation

a=norm ( [Inv_M_Theta (1,1) Inv_M_Theta (2,1) Inv_M_Theta (3,1)]); Torque_Axis= [1 0 0]; Theta_TRA=a*Inv_M_Theta*Torque_Axis'; TRA_Direction= [0 0 0 Theta_TRA']'; …

اقرأ أكثر...### calculate torque to turn a roll

calculate torque to turn a roll T06:02:02+00:00 Roll Torque an overview ScienceDirect Topics. The roll torque, for both rolls, may be obtained from the power as (566)M = R ˙UJ * Tirosh et al (1982) applied Avitzur's (1968) upper bound approach to analyse cold rolling of viscoplastic materials at high speeds

اقرأ أكثر...### Torque and power requirement for roller | Physics Forums

If posible i need calculation steps P=Tω power = torque . angular velocity To calc power required (for a constant speed) you need to figure out/measure the opposing torque …

اقرأ أكثر...### calculate torque to turn a roll

calculate torque to turn a roll ekominopl. wheel turning torque calculation Engineers Edge Forum, Im trying to design a wheel that is supposed to rotate a balanced system (wheel is pinned to the body of the system, and will not turn unless force is applied), the problem Im having is that the system is very heavy(70kg) but the torque ...

اقرأ أكثر...### calculate torque to turn a roll

calculate torque to turn a roll News Useful Motor/Torque Equations for EML2322L Calculate the Torque required to lift the Force with the lever arm T = F x d = 4905 N x 05 m = 24525 N …

اقرأ أكثر...### calculate torque to turn a roll

2 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 diameter at a temperature of 1100 °C at 3m/sec.

اقرأ أكثر...### calculate torque to turn a roll

roll torque due to tension - Gear Pulley engineering . 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.

اقرأ أكثر...### motor

I use the moment of inertia formula for a cuboid along the length axis and use the parallel axis theorem to move the axis to where I have the rod, I get: I = (1/2) * m * (w^2 + h^2) + m* ( (0.5*h)^2) = (1/2) * 25kg * (0.4^2+ 0.5^2) + 25 * (0.2^2) = 6.125 kg-m^2 Assuming I want to reach 5 rpm in 5 seconds. I have

اقرأ أكثر...### calculate torque to turn a roll

14/09/2014 Force = (20+6)002x 98= 40 N ( 20 kg fabric roll, 6 kg roller self weight ) Now torque= 40 x 0045 = 018 Nm This is the calculation i've done Not sure its right I cannot attach a …

اقرأ أكثر...### How can we calculate the required torque to rotate 1200 …

torque = I * angular acceleration torque * t = I * angular acceleration * t = I * omega where omega is rad/sec after the torque has been applied for a time t. We know that K = 1/2 * I *...

اقرأ أكثر...### How can I calculate the power and torque required for the motor …

τ a c c e l e r a t e = combined wheel torque required to accelerate (i.e. after rolling friction and gravity have been nullfied by other torques) ( N ⋅ m) = F a c c e l e r a t e × r w h e e l τ c o n s t a n t = combined wheel torque required to maintain constant speed ( N ⋅ m) = τ r o l …

اقرأ أكثر...### How to calculate the torque required to rotate a shaft

If the power of the motor is the power delivered by the motor to the shaft then the torque produces work in each turn of the shaft: W = 2πΤ If the shaft rotates at an angular speed ω it takes a time t = 2π / ω to make a turn, The power delivered to the shaft is then P = W/t = W ω/ (2π) = 2π T ω/ (2π) = ωT

اقرأ أكثر...### Calculating Rotational Force Needed To Rotate Assembly

You would be able to apply a really low torque with gearing and get it to rotate slowly, or you could apply high torque and get it to rotate fast. From kinematics, Moment = moment of inertia * angular velocity. Or something similiar. Should get you down the right path though. -------------------------------------- Did you find this reply helpful ?

اقرأ أكثر...### calculate torque to turn a roll

Torque and power requirement for roller Physics . 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 ...

اقرأ أكثر...### calculate torque to turn a roll

calculate torque to turn a roll, Combined translational and rotational motion Richard Fitzpatrick However, we know from experience that a round object can roll over such a surface with Let us, now, examine the cylinder's rotational equation of motion Recall, that the torque associated with a given force is the product of the magnitudeTo ...

اقرأ أكثر...### Rotating Mass Torque Equation and Calculator

Required Torque, lb-ft: WK 2 = Mass Moment of Inertia of load to be accelerated lb-ft 2 (See Mass moment of inertia calculations) = Change of speed, rpm: t = Time to accelerate the load, …

اقرأ أكثر...### calculate torque to turn a roll

calculate torque to turn a roll . T07:09:35+00:00. Calculate Torque To Turn A Roll. Oct 08, 2011 Roll Torque Due To Tension Gear Amp Pulley Engineering Nov 03, 2008 roll torque due to tension sf1 Mechanical OP 30 Oct 08 1811 Hello, I would like to know how to calculate the torque required to turn a roll which is supported ...

اقرأ أكثر...### Calculating Torque With Examples

The magnitude of the vector is calculated based upon θ, which is the angle difference between r and F, using the formula: τ = rF sin ( θ ) Special Cases of Torque A …

اقرأ أكثر...### Calculation for roller conveyor

4.2 Calculation result (load torque and motor power) ③ Caluclation of load torque Tf = N･m Tf＝（W＋WR）×g×μ×D×P2／（2000×P1×Z×ηc×ηg） ④ Conversion from load torque Tf to motor-power Pf Pf = kW Pf＝Tf×N／9550 …

اقرأ أكثر...### 3 Ways to Calculate Torque

Multiply the moment of inertia by the angular acceleration to find the torque. The full formula for torque using the moment of inertia and the angular acceleration is =, where …

اقرأ أكثر...### Torque Required to Rotate a Hollow Cylinder

The cylinder is filled approx. 80% full of a watery sludge mixture. It begins turning and the water quickly drains off and leaves the tank about 1/3 full of a wet sludge. So, I calculated this much: volume of tank= 1005.31 cu. ft. …

اقرأ أكثر...### Calculate Torque Required to Turn Cam : r/EngineeringStudents

There are timing gears attached to the ends of each shaft to connect the belt to each other. For any system of gears, power is theoretically conserved and you can use the formula (power) = (torque)x (velocity). So if the angular velocity of the system is cut in half, then you have to double the torque to conserve power.

اقرأ أكثر...### Calculating HP to spin wheel | Mechanical Engineering Forum …

Using the moment of inertia of a think disc (1/2*m*r^2), my final equation looks like this: P = [ (1/2)* (1/2) (mr^2)*ω^2]/t = [ (1/4)* (mr^2)*ω^2]/t Method 2 For the second method, I used the equations below: τ = I * α P = τ * ω ==> P = I * α * ω First I calculated my angular acceleration. α = (ωf - ωi)/t = ωf/t

اقرأ أكثر...### 3 Ways to Calculate Torque

The magnitude of that rotation is torque (τ), expressed in newton-meters (N∙m). The most basic way to calculate torque is to multiply the Newtons of force exerted by the meters of distance from the axis. There's also a …

اقرأ أكثر...### Calculating Torque With Examples

The magnitude of the vector is calculated based upon θ, which is the angle difference between r and F, using the formula: τ = rF sin ( θ ) Special Cases of Torque A couple of key points about the above equation, with some benchmark values of θ : θ = 0° (or 0 radians) - The force vector is pointing out in the same direction as r.

اقرأ أكثر...### Calculating to the torque required to rotate a drum

It is at this point that the material will stop "sticking" to the drum and will begin to slide down. This angle will be the angle of rotation that you will calculate the torque at. You will need to calculate the center of gravity of the material at this rotation and you will have where your moment arm is.

اقرأ أكثر...### Determining required torque for a chain and sprocket conveyor belt

Once you determined acceleration torque, to calculate the total torque for your motor add your frictional torque + acceleration torque. Usually, you want to add a safety factor of around 1.5-2 depending on what's available on the market.

اقرأ أكثر...### calculate torque to turn a roll

Torque and power requirement for roller Physics Forums. Torque and power requirement for roller. We have roller setup which is to be driven by a motor. The roller dia is 90 mm. A shaft which is connected to its end is 25 mm of dia. The roller weight is around 10 kg. On the periphery of the roller there are some 40 kgs of mass is acting.

اقرأ أكثر...### Conveyor Power and Torque Calculator

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. Enter your values for the Mass, Diameter, Beltspeed, Friction and Angle; select your units as required. MASS TO MOVE (M) DIAMETER OF DRIVE DRUM (D): BELTSPEED (S):

اقرأ أكثر...### Torque Calculator

How does this torque calculator work? The algorithm behind this torque calculator is based on the equations provided below that depend on the variable to be calculated: - T = F * D - F = T / D - …

اقرأ أكثر...### How can we calculate the required torque to move a …

To include gearbox efficiency of 98% this becomes 0.98 T (motor) x w (motor) = T (wheel) x w (wheel) (you will need more torque at the motor side to overcome the inefficiencies) To convert rpm...

اقرأ أكثر...### calculating torque to turn a wheel

Torque = wheel radius (moment arm) * Force = 0.0381m * 2.6N =0.099Nm = 0.010kilogram meter = 14 ounce inch If the Bot needs to accelerate up a ramp than the required torque increases by mg * sin (ang) so the total F = ma + mg*sin (ang) where: g is the acceleration of gravity (9.8m/s/s on Earth's surface) m is the robot mass (kilogram)

اقرأ أكثر...### calculate torque to turn a roll

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 ...

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