### Torque (article) | Khan Academy

Torque is a measure of the force that can cause an object to rotate about an axis. Just as force is what causes an object to accelerate in linear kinematics, torque is what causes an object to acquire angular acceleration. Torque is a vector quantity. The direction of the torque vector depends on the direction of the force on the axis.

### How to calculate wheel torque from engine torque – x ...

Step 3. Calculate the wheel force using equation (11). Example 2. For a given gearbox, with multiple gears (gear ratios), we can calculate the wheel torque and force for each gear. Let's calculate the wheel torque and force for a vehicle with the following parameters: engine torque, T e = 150 Nm.

### How to calculate the torque required to rotate a shaft - Quora

Answer: In the absence of mass of the shaft and with no friction, no torque is needed to rotate the shaft. If the mass of the shaft is negligible, then the important thing is the load. Is the shaft moving a stone crushing machine? Is it raising the train of a roller coaster? You should specify t...

### Calculations | Simple Electric Motors

Now you can calculate the torque for this load at this speed assuming that you know efficiency of the motor. Our estimated 15% efficiency represents maximum efficiency of the motor which occurs only at a certain speed. Efficiency may be anywhere between zero and the maximum; in our example below 1000 rpm may not be the optimal speed so the for ...

### Setting Techniques for Tapered Roller Bearings | PTE

Bearing rolling torque is influenced by rotational speed and applied lubrication.These should be kept constant between units. The most common method of measuring rolling torque is with a torque wrench. When measuring rolling torque, turn the shaft as slowly as possible (estimated at 3.5 rpm) while maintaining smooth rotation. Torque-set.

### Motor Sizing Basics Part 1: How to Calculate Load Torque

To calculate load torque, multiply the force (F) by the distance away from the rotational axis, which is the radius of the pulley (r) . If the mass of the load (blue box) is 20 Newtons, and the radius of the pulley is 5 cm away, then the required torque for the application is 20 N x 0.05 m = 1 Nm. Typically, a safety factor is used so that the ...

### Gear Train : Gear Ratio, Torque and Speed Calculations ...

Gear Train : Gear Ratio, Torque and Speed Calculations. A Gear train consists of two or more gears in series. It is used to increase or decrease the speed or torque of the output shaft. The term Gear Ratio is used to calculate the speed and torque of output gear when torque is …

### mechanical engineering - How can I calculate the force ...

We have a rolling machine with 3 rollers; the bottom has two rollers with diameters of 168 mm and one top roller with a diameter of 219 mm. I want to calculate the required force to bend a 10 mm thick plate which is 2,500 mm wide. The rolling machine is connected to a 10 HP motor with a gear box and the rollers have an rpm of 8.

### Torque and power requirement for roller | Physics Forums

power = torque . angular velocity To calc power required (for a constant speed) you need to figure out/measure the opposing torque due to whatever loads are acting and know what speed the roller needs to run at. Sep 9, 2014 #9 saruvanan 10 0 Let me rephrase my question Dimensions We've a roller of length 400mm & Dia of 90mm.

### Load Analysis and Driven Power Calculation (Symmetrical …

If you do then you can estimate the max torque assuming the motor is delivering 5.5HP at 1500rpm...... 5.5 HP = 4125W 1500rpm = 157 Radians/second So the torque at the motor is 4125/157 = 26Nm The gearbox reduces rpm and multiplies the torque so torque at the output of the gearbox/drive pulley should be something like.. 26 * 1500/95 = 410Nm

### Fundamental concept of metal rolling

plastically during rolling. 4) The volume of metal is constant before and after rolling. In practical the volume might decrease a little bit due to close-up of pores. 5) The velocity of the rolls is assumed to be constant. 6) The metal only extends in the rolling direction and no extension in the width of the material.

### Motor Calculations

In the case of rotational motion, the analogous calculation for power is the product of torque multiplied by the rotational distance per unit time. P rot =M×w Where: P rot= rotational mechanical power M = torque ω = angular velocity The most commonly used unit for angular velocity is rev/min (RPM).

### Rolling Mill Load Calculation

machine after that power and torque required is calculated for the rolling load and the gear forces simultaneously which is further useful for designing and analysis the gear used in gearbox of hot rolling machine, operation of rolling mills rolls rolls are the tools of the rolling trade and the way they are used to

### 1 12. Rolling, Torque, and Angular Momentum

12. Rolling, Torque, and Angular Momentum Rolling Motion: • A motion that is a combination of rotational and translational motion, e.g. a wheel rolling down the road. • Will only consider rolling with out slipping. For a disk or sphere rolling along a horizontal surface, the …

### 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,

### 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) :

### Rotation: Moment of Inertia and Torque - Waterloo Maple

Torque and Newton's Second Law for Rotation Torque, also known as the moment of force, is the rotational analog of force. This word originates from the Latin word torquere meaning "to twist". In the same way that a force is necessary to change a particle or …

### Motor Sizing Calculations

Calculate the value for load torque, load inertia, speed, etc. at the motor drive shaft of the mechanism. Refer to page 3 for calculating the speed, load torque and load inertia for various mechanisms. ... Total Inertia of the Machine [oz-in2] Rotor Inertia of the Motor ...

### Motor Torque Calculations - NEPSI

The following calculators compute the various torque aspects of motors. These equations are for estimation only, friction, windage, and other factors are not taken into consideration. Calculator-1 Known variables: Horse Power and Speed in RPM Torque is the action of a force producing or tending to produce rotation. Torque = force x distance Torque

### How to Determine a Torque Specification | ...

Aslew of technology is available to ensure threaded fasteners are installed in the correct sequence and at the correct torque and angle. For example, Ingersoll Rand's QE Series of DC electric tools and IC Series of controllers measure torque with an accuracy of ±0.2 percent and angle to ±1 degree. Measurement resolution is ±0.025 percent of full-scale torque.

### How To Calculate Load For Roller Thrust Bearing ...

Rolling bearings that taper are more likely to carry significant axial drawers. The calculator determines the efficiency of the pulley supported by the contact bearing. It would be too difficult to show you how to calculate p for each type of bearing shown in the service life formula for a ball bearing with a load capacity of 0.5.

### (PDF) Methodology for Calculation of Rolling Load and ...

In this paper the concentration is given to the calculation of rolling load and the forces acting on the gears of steel rolling machine. After that power and torque required is calculated for the rolling load and the gear forces simultaneously which is further useful for designing and analysis the gear used in gearbox of hot rolling machine.

### Load Analysis and Driven Power Calculation (4 Roll …

The upper roller of 4 rolls bending machine is driven roller. The total drive torque acting on the upper roller is adding up the torque consumed on the deformation and overcome the friction. Friction torque including frictional resistance consumption to overcome shaft roller rolling on bending plate and torque consumption in the roller bearing ...

### Load Analysis and Driven Power Calculation of Symmetrical ...

The lower roller of the plate rolling machine is the driving roller, and the driving torque on the lower roller is used to overcome the deformation torque Tn1 and the friction torque Tn2. In the process of steel plate rolling, the deformation capabilities which stored in AB section of steel plate (see Fig 1a and Fig 2) is 2Mθ, the costed time ...

### calculate torque of roller machine

how to calculate torque of roller machine. The load analysis of rolling machine can be reference data for designing parts of plate rolls Get price; Wheel torque to crank torque calculator This torque calculator is the smart tool that helps you to calculate torque of a rotating object, torque on a flat coil and vector torque These calculations are without regard to machine Calculate Torque Of ...

### 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

### Rolling Resistance and Industrial Wheels

Calculating Rolling Force To help quantify rolling resistance in industrial wheels, there is the coe˝cient of rolling friction. This is a number that has been empirically determined for di˜erent materials, and can vary by the speed of the wheel, the load on the wheel, and the material the

### 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 ...

### How to calculate continuous and peak torque values for ...

The intermittent, or peak, duty zone represents the highest amount of torque the motor can produce at a given speed for a limited amount of time — typically a few milliseconds — as specified by the manufacturer.. To determine whether the application operates within the motor's intermittent zone, we use the peak torque — the highest amount of torque the motor will need to produce during ...

### Motor torque, load torque and selection of motors

Motor torque, load torque and selection of motors 2/43 2.1 Motor speed–torque curve Refer to Figure 2.1 where T st = starting torque or breakaway torque. T m = minimum, pull-in or pull-up torque. T po = pull-out, breakdown or maximum torque, obtainable over the entire speed range.

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