# how to calculate motor rating of a vertical raw mill ### 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

Sales Online ### Vertical Mill Calculations | Mill (Grinding) | Nozzle

Vertical mill calculations Symbols Power consumption Grinding pressure Mill internals Nozzle ring Dam ring Heat balances, Example Layout Alternatives There are two basic layouts of the VRM system; product collection in cyclone(s) or product collection in filter

Sales Online ### Electrical Motor Shaft Power - Engineering ToolBox

Power is in general rated in watt (W) or horsepower (hp)The old imperial unit horsepower is equal to 746 watts (0745 kW) or 33000 lb ft per minute (or 550 lb ft per second) The unit of electric power - 1 watt - is equal to the power produced by an electrical current of 1 amp at a potential difference of 1 volt 1 watt = 1 / 746 hp; 1 hp = 746 watts = 076 kW

Sales Online ### 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 Select a motor type from AC Motors, Brushless DC Motors or Stepping Motors based on ,

Sales Online ### Motor loads calculation - Electrical Engineering Centre

Electrical motor loads are calculated from power in kW and full rated load in kWFollowing is the formula how to calculate Motor loads Example : We have 1 unit Induction Motor with 30 horsepower (hp),running with 349 amps for amperage load and 460 volts 3 phase and power factor value is 075 and motor efficiency is 85%

Sales Online ### Required Water Pump Horsepower Calculator

Required Water Pump Horsepower Use this form to estimate the brake horsepower required Brake horsepower is the power out of the drive motor, and the power into the water pump and is how most pumps and drive motors are specified

Sales Online ### Wind Turbine Calculator - EnergyGroove

Wind Turbine Calculator 1 Wind Turbine Calculator 2 Terms Wind Turbine Site data In order to understand the value of a wind turbine you need to know what the wind (and air) conditions are at the intended site This includes: Air Density Data This is the average air ,

Sales Online ### Wind Turbine Power Calculator - Rechneronline

The radius is the length of a rotor blade The wind speed refers to one point in time, not to an average speed Air density, which is the mass of air per space, depends on air pressure, temperature and humidity 12 is a good average value at sea level (air density calculator in German: Luftdichte) The efficiency factor tells, which part of ,

Sales Online ### Calculations | Simple Electric Motors

Good science project does not stop with building a motor It is very important to measure different electrical and mechanical parameters of your motor and calculate unknown values using the following helpful formulas We will use the International System of Units (SI) This is modern metric system that is officially accepted in electrical engineering in [,]

Sales Online ### Ball Mill Design/Power Calculation

The basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing are; material to be ground, characteristics, Bond Work Index, bulk density, specific density, desired mill tonnage capacity DTPH, operating % solids or pulp density, feed size as F80 and maximum ‘chunk size’, product size as P80 and maximum and finally the type of circuit open/closed ,

Sales Online ### How To Calculate Rpm Of A Motor To Ball Mill

Selection Sheet - Eaton Ball mills - These mills use forged steel balls up to 5 inches , Use of a clutch permits the mill motor to be , The required clutch torque is calculated from the power rating of the mill motor, clutch shaft rpm and an appropriate service factor

Sales Online ### ABB drives - Technical guide No 4, Guide to variable ,

the electric motor All of the machines mentioned earlier in this guide are com-monly driven by electric motors It can be said that the electric motor is the workhorse of industrial process In this chapter, we will take a closer look at electrical motors - especially the squirrel cage AC motor, which is the most common motor used

Sales Online ### How to calculate the shaft diameter from the torque ,

May 14, 2018· Inputs that we need to calculate shaft diameter As we know Torsional equation (Read more about the torsional equation here) Where τ = Torsional stress induced at the outer surface of the shaft (Maximum Shear stress) r = Radius of the shaft T = Twisting Moment or Torque J = Polar moment of inertia C = Modulus of rigidity for the shaft material

Sales Online ### Control Engineering | How to size servo motors: Advanced ,

Jul 18, 2013· Calculate the inertia of the table as it would be if there were no cutouts Calculate the mass and inertia of each cutout Apply the parallel axis theorem to each cutout Reduce the inertia of the table by six times the value found in step 3 1

Sales Online ### Flow Rate Calculator | Water Velocity Calculator

This calculator may also be used to determine the appropriate pipe diameter required to achieve a desired velocity and flow rate The following formula is used by this calculator to populate the value for the flow rate, pipe diameter or water velocity, whichever is unknown: V = 0408 × Q/D 2 V = Water Velocity; Q = Flow Rate; D = Pipe Diameter

Sales Online ### Sizing Chart - American Rotary

The following phase converter wizard has been used by American Rotary Engineers to successfully size tens of thousands of phase converters For additional sizing assistance call 1-888-743-6832 *If your power rating is different than horsepower (HP), use the below calculations (or see video below) to find the proper HP rating to input into the Phase Converter [,]

Sales Online ### Plant Engineering | Relationship of torque and shaft size

Apr 13, 2015· For example, a 100 hp motor designed for 900 rpm would require twice as much torque as a 100 hp motor designed for 1,800 rpm Each shaft must be sized for the torsional load it is expected to carry Two basic approaches are used to determine the required minimum shaft size for motors, both of which yield conservative results

Sales Online ### 5 Steps To Choose Best Motor For Your Application

Jul 15, 2019· In choosing a motor for these conditions, consider the highest continuous load point, which typically occurs at the highest speed Step 2: Get a handle on horsepower The rule of thumb for motor horsepower is: Select only what you need, and avoid the temptation to oversize or undersize Calculate the required horsepower from this formula:

Sales Online ### Steam Calculators: Steam Turbine Calculator

Mar 17, 2015· Calculation Details Step 1: Determine Inlet Properties Using the Steam Property Calculator, properties are determined using Inlet Pressure and the selected second parameter (Temperature, Specific Enthalpy, Specific Entropy, or Quality)

Sales Online ### Wind Turbine Calculator - Determine Your Energy Output ,

Wind Turbine Calculator The wind turbine calculator is meant to be used to estimate energy production and wind turbine sizing This can be a great way to make better decisions about renewable energy The turbine calculator can be used for both offshore and onshore wind energy production estimations

Sales Online ### Pump Power Calculation Formula | Specific speed of a ,

Sep 22, 2018· Specific Speed of Pump The specific speed “Nq” is a parameter derived from a dimensional analysis which allows a comparison of impellers of various pump sizes even when their operating similar Q -H range The specific speed can be used to classify the optimum impeller design Specific Speed of pump (Nq) is defined as the speed in RPM at which a geometrically similar impeller ,

Sales Online ### HOW TO CALCULATE PRESSURE ANYWHERE IN A PUMP ,

head at point 3 was 40 feet, we are missing 29 feet We must now calculate the total head of the pump that will produce the value of 69 feet at point 3 at the flow rate required Using equation  and with the value of H X (69 feet), we can then calculate the value of ∆H P, the total head of the pump, which will satisfy the requirements

Sales Online ### Motor sizing made simple | Machine Design

To size a motor for this kind of application, match the motor output rating to the load's torque converted to horsepower: where T = torque in lb-ft Don't forget the duty cycle!

Sales Online ### Power - Engineering ToolBox

Example - Work done by an Electric Motor The work done by a 1 kW electric motor in 1 hour can be calculated by modifying (1) to W = P dt = (1 kW) (1000 W/kW) (1 h) (3600 s/h) = 3600000 J = 3600 kJ Example - Electric Winch lifting a Mass An electric winch is lifting a mass of 100 kg 10m above the ground The electric motor in the winch is 500 W

Sales Online ### The Basics of Motor Selection - Groschopp

a motor constructed for environmentally sensitive applications To more uniformly denote industry standard gearmotor sealing, the Ingress Protection (IP) chart (Table 1) was created to assist designers with selecting the proper IP rating for an application The ingress rating of the motor enclosure is given a number rating in the form of IPXX

Sales Online ### Bearing Life Calculation - Bearing Loads & Speeds ,

Bearing Rating Life Calculation “Rating life” is the bearing life calculated for 90% reliability This is the amount of time that a group of apparently identical bearings will complete or exceed before the formation of a fatigue spall The basic formula for calculating bearing L 10 rating life is: where: C = Dynamic Capacity (dN or Lbs)

Sales Online ### Introduction to How Drawbar Pull Works | HowStuffWorks

Let's say that the torque of our example vehicle's motor is 4,800 inch-pounds (400 pound-feet) and it has an overall gear reduction of 10:1 along with a tire radius of 18 inch Again, complete the calculations, and you'll discover that the tractive effort -- or gross pulling force -- of the vehicle is 2,667 pounds

Sales Online ### Milling Time Calculator for machinists - JAN Products

Milling Time Calculator This will compute the time an end mill to take to remove material based on feedrate,area, depth, cutter diameter, and depth increment This is used for pocket milling and face milling Use the other calculators on this web site to calculate the feed rate The reason for the 65 default step over is that this is ,

Sales Online ### All GE Motors catalogs and technical brochures

*Prices are pre-tax They exclude delivery charges and customs duties and do not include additional charges for installation or activation options Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rat

Sales Online ### Formulas kiln - SlideShare

Jul 22, 2010· CEMENT MILL FORMULAS MILL CRITICAL VELOCITY = 76 / (D)^1/2 MILL ACTUAL VELOCITY = 32 / (D)^1/2 , SDN 800 Ratio = 5435:1 RWN-500 Motor KW = 710 Aux GB SDA 250 5435: 1 Input RPM = 100 - 1000 Motor 30 KW ; 1500 RPM Motor GB GB Motor RWB-178 Pinion Kiln Axis Concord Alingnomatic Geared Coupling GG , 1 HP = rd W = Total vertical load on ,

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