When studying how objects rotate, it quickly becomes necessary to figure out how a given force results in a change in the rotational motion. In fact, there is nothing to discuss, there is already the formula P = Tn/9.75 . No sign is necessary if the magnitude of the torque is positive. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. and rpm. The fundamental equations relating torque and RPM to power is as follows: Power (Hp) = Torque (ft-lbs) x RPM / 5252. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Here the formula Md = 9550 x P / n to calculate. I am using formula: Torque=9550*P(kW)/n(rpm). The magnitude of the vector is calculated based upon , which is the angle difference between r and F, using the formula: A couple of key points about the above equation, with some benchmark values of : Let's consider an example where you're applying a vertical force downward, such as when trying to loosen the lug nuts on a flat tire by stepping on the lug wrench. The SI units of torque are newton-meters, or N*m (even though these units are the same as Joules, torque isn't work or energy, so should just be newton-meters). Your Calculation Values Given Travelling Operation Lifting Operation Mass to be Moved m = kg Speed v = m/s The unit of torque is N.m (Newton-meter). Lets say youre a shipowner, and you are concerned that your newly re-engined ship is not outputting the horsepower that it should be. The above equations are particularly helpful when there is a single known force acting on an object, but there are many situations where a rotation can be caused by a force that cannot easily be measured (or perhaps many such forces). I am trying to get very simple Torque formula to work good but no luck (like in attachment). By using our site, you agree to our. You all know that force is the only factor in linear kinematics that causes acceleration of a body.. Just like force, Torque is involved with an angular acceleration of the body. we calculate the motor power P1N. As the resistive load is applied, the dynamometer measures both the torque and the speed applied by the engine. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2023 wikiHow, Inc. All rights reserved. The equation for torque is very similar to the equation for, All tip submissions are carefully reviewed before being published, Calculating torque requires knowledge of advanced. So the direction of the torque is away from the tires which is also direction you want the lug nuts to ultimately go. This formula is a calculation formula for the relationship between torque, power and speed commonly used in engineering. Ensure that it has a margin to the gearbox rated mechanical energy and thermal energy. The efficiency of the gearbox is determined in part by the gear teeth, the rolling-contact bearing friction, and the shaft seal friction.It can be measured on a dedicated test bench, and the methods include the loss power method and the direct power measurement method. (For full case study, click HERE). To calculate load torque, multiply the force (F) by the distance away from the rotational axis, which is the radius of the pulley (r) . The end result is an engine performance curve, which graphs torque, speed, and power. Share this entry This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2023 wikiHow, Inc. All rights reserved. Calculating torque is a physics concept requiring an understanding of algebra, geometry, and trigonometry. There are a few ways to measure the true torque (and power) output of your engine, that dont require equipment disassembly or modification. . Torque = 9550*output power/output speed. As a small thank you, wed like to offer you a $30 gift card (valid at GoNift.com). For this reason, you'll sometimes see it represented with an "r" in the basic torque equation. m*s)/m. At this point, you can talk to either a consultant, the engine manufacturer, or the propeller manufacturer to determine where the vessel performance issue is coming from, and determine how to fix it. Divide the diameter of the output gear by the diameter of the input gear. Thanks for your message, We will contact you within 1 working day. Save my name, email, and website in this browser for the next time I comment. 1. after the user calculates gearbox output torque, according to the SDT Transmission catalogue, not only the gearbox rated output torque exceed than actual working output torque, but also consider the overload capacity of the drive motor and the required maximum operating torque in practice. The axis of rotation is a point where a body begins its rotation. Copyright 2021 Dongchun, All rights reserved. Angular speed should be in degrees/second or radians/second. The Pull-up Torque is the minimum torque developed by an electrical motor when it runs from zero to full-load speed (before it reaches the break-down torque point). YDFORCE has perfect after-sale service network. Powered by Dongchun motor. Also, you can roughly calculate by the formula M=9950P/n. This test works usually by connecting the output shaft of an engine to a set-up that applies a resistive load. Taizhou Dongchun motor Co., ltd are specialized in producing electric motor for industrial machine, gear box and water pump etc. 6.667 Hz is NOT 6.667 radians/second, To deal with the need to have both cycles per second and radians per second, Mathcad has "Hza," (angular Hertz?) Concept of gear reducers torque : (1). If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. 88, Minhe Road, Zeguo, Wenling, Zhejiang, China. [1] Method 1 Finding Torque for Perpendicular Forces 1 Find the length of the moment arm. Some of our calculators and applications let you save application data to your local computer. Among them: t-torque; 9550-constant (no need to investigate its source); p-motor power (kw); n-output speed (rev/min) This method is what is used by engine manufacturers to develop the specifications for a particular engine. An automotive dyno test stand. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. The load is constant power, then T and N is basically the inverse relationship. This is the pivot point. For example, suppose you know that the moment of inertia for an object is 10 kgm. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. If you know the torque of the equipment T2 and the rated speed of the motor n1 and the output shaft speed n2 and drive the equipment system f1 (this f1 can be defined according to the actual operation of the site, most of the domestic 1.5 above) and the motor power factor m (that is, the ratio of work to total work, in the motor winding can be understood as the slot full rate, generally in 0.85). After strict training, the after-service engineer could offer clients the rapid maintenance service on demand. Power is certain, the speed is fast, the torque is small, generally need a larger torque, in addition to the need for a high power motor, but also add another reducer. The testing can be done with the equipment in place, and provides horsepower data quickly and accurately. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2023 wikiHow, Inc. All rights reserved. The concept of reduction ratio: namely the transmission ratio of the reduction gear, which is a kind of transmission ratio. P1N>=(T2n1)f1/(9550(n1/n2)m) can be derived from the power of the motor you want to select at this time. The SI units of torque are newton-meters, or N*m (even though these units are the same as Joules, torque isn't work or energy, so should just be newton-meters). (This can occasionally feel slightly silly, as you're holding your hand up and pantomiming in order to figure out the result of a mathematical equation, but it's the best way to visualize the direction of the vector.). Note: if When calculating the torque through the reducergearbox, the factor of gear transmission efficiency loss should be considered. Power is certain, the speed is fast, the . Torque calculator is used to find the value of torque which arises from a rotating object. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. The formula is as follows: Knowingthe torque, the output revolution of the reducer and the usecoefficient, then how to calculate the motor power ofthe reducer. For AC motor: the rated torque = 9550 * rated power/ rated speed; For DC motor, due to the many types of product, it is . Torque = force x distance. If youre ready to invest in a high-quality torque measurement system, talk to the experts at Binsfeld. Jones, Andrew Zimmerman. 3. You know what horsepower the ship is supposed to be capable of, but to determine the ships real horsepower output, youll start by measuring torque. T = 9.55 * P / N, T output torque, P power, N speed, the motor load has a constant power and cross-torque points, constant torque, T constant, then P and N is proportional relationship. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2023 wikiHow, Inc. All rights reserved. (Mandatory) The rated power and rated speed of the motor can be found on the nameplate of the motor. The Horse Power or KW is calculated on the basis of work done in a given time. wikiHow is where trusted research and expert knowledge come together. Besides, there are stillother related parameters. Torque is the measure of the force that can cause an object to rotate about an axis. Torque is the turning force through a radius - with the units Nm in the SI-system and the units lb ft in the imperial system. All of theseparameters are veryimportant. The torque of a 60 hp motor rotating at 1725 rpm can be calculated as: NEMA (National Electrical Manufacturers Association) have classified electrical motors in four different designs where torques and starting-load inertia are important criteria. The vector formula that yields the torque vector is: The vector r is the position vector with respect to an origin on the axis of rotation (This axis is the on the graphic). Jones, Andrew Zimmerman. Thanks to all authors for creating a page that has been read 184,916 times. We don't save this data. You can compare your horsepower calculation to what the manufacturer has stated to see how your ship is performing. On the other side of the axis, force is being exerted from the axis in the opposite direction 5 meters from the axis. The Full-load Torque is the torque required to produce the rated power of an electrical motor at full-load speed. Hope the knowledge we share can help you. Torque is defined as the force applied over a certain distance and is similar to work. In torque problems, you'll typically be given the magnitude force. The fundamental equations relating torque and RPM to power is as follows: Power (Hp) = Torque (ft-lbs) x RPM / 5252 Power (kW) = Torque (Nm) x RPM / 9550 How to Measure Torque and Power of an Engine The most common method for measuring torque and power of an engine is through a dynamometer, or "dyno" test. For AC motors: rated torque = 9550 * rated power / rated speed; for DC motors is more difficult because there are too many types. In this case, take your right hand and curl the fingers of your hand in the direction of rotation caused by the force. Doing so you can provide your variables in any (correct) units you like and will get a correct result. If you were determining the sine of the angle by hand, you would need the measurements for the opposite side and the hypotenuse side of a right triangle. In imperial units the Full-load Torque can be expressed as, T = 5252 Php / nr (1), nr = rated rotational speed (rev/min, rpm), In metric units the rated torque can be expressed as, T = 9550 PkW / nr (2). In the torque equation, this distance is represented by "r" for radius or radial vector. The reduction ratio of the general reduction mechanism is marked with the actual reduction ratio, but some special reducers, such as cycloid reducers or harmonic reducers, are sometimes rounded by the rounding method without denominator. If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. From preventative maintenance to optimized fuel efficiency, when you are able to monitor engine performance on a regular basis, youre able to improve operational efficiency and reduce downtime. The load is constant power, then T and N is basically the inverse relationship. Only emails and answers are saved in our archive. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2023 wikiHow, Inc. All rights reserved. Calculations Torque. You might also be given the torque and told to solve for the force. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. It is also a common method for quantifying the true power output for cars, as shown in the image below: Figure 1. The Meaning of Torque Torque (also called moment mostly by engineers) is calculated by multiplying force and distance. Google use cookies for serving our ads and handling visitor statistics. While this method is straightforward for machinery that is mobile (such as a vehicle), it is not ideal in situations where machinery has already been installed. 1) k is a unit conversion value you're used to if you've not been using Mathcad. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. EV needs enough high torque for starting EV and driving up the hill. Mathcad is unitaware and it considers the units, too, not just the numbers in front. The formula M=9550P/n can also be used for rough calculation. The torque, output revolution of the gearbox, and use coefficient are given. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2023 wikiHow, Inc. All rights reserved. When a motor starts and begins to accelerate the torque in general will decrease until it reach a low point at a certain speed - the pull-up torque - before the torque increases until it reach the highest torque at a higher speed - the break-down torque - point. Torque: Md = 9550 x P / n; Calculations slip. Definition and Equations, Difference Between Independent and Dependent Variables, M.S., Mathematics Education, Indiana University, The same argument as above applies to cases of. Torque is proportional to excitation flux and armature current. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. The torque developed by an asynchronous induction motor varies when the motor accelerates from zero to maximum operating speed. If the input speed is 1500r/min, the output speed is 25r/min, the reduction ratio is: i=60:1. Input the value that you wish to convert. T unit is kg-cm, torque = 9550 * output power / output speed. Formula: T=9550P/n Commonly used formula in engineering: torque; power; calculation formula for the relationship between speed. Today Taiqi Seiko mainly talksabout the calculation of the reducer torque. 0 Kudos Reply Notify Moderator Fred_Kohlhepp 23-Emerald I (To:bhorn) May 02, 2016 08:10 AM Two things: This is honestly one of the trickiest parts of working with torque because it is calculated using a vector product, which means you have to apply the right-hand rule. T = KTi In most applications, electronic drivers control stepper motors. The torque calculation formula of the servo motor is: T=F*R*reduction ratio. In physics, the torque is given as the twisting force that generate rotation of object. Holding torque is a measurement of how much rotating force is required to force a stationary stepper motor shaft out of position. Holding torque (T) is the product of a motor's torque constant (KT) and the current (i) applied to the stator windings. Manage Settings Servo motor torque calculation formula: T = F * R * reduction ratio. You need that ship to function at its rated horsepower capacity to ensure youre performing efficiently. Torque, power calculation: [] = [ y] [ ] / At lower RPM (motor rotation), you can expect lower motor power at the same torque. Hence, torque can be defined as the rotational equivalent of linear force. . This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2023 wikiHow, Inc. All rights reserved. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Torque is defined as the force applied over a certain distance and is similar to work. A horsepower value tells you how much work your engine is capable of, in a certain time frame. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. The costs and downtime associated with this approach can be significant. The definition of gearbox transmission efficiency: refers to the ratio of the output power (or output torque) to the rated input power (or input torque multiplied by the transmission ratio) when the rated input speed reaches the rated input power (or input torque). After entering the required data, click on the "Calculate" button to find out the full load torque of the motor. Torque calculation Motor capacity selection (tentative)-4-(2) Cyclic operation Selection outline Assessment Refer to page Calculate the required power and the load torque, and select a motor capacity that can be driven by the 2) ne isn't right. For example: the torque required by the driven equipment: 500N.M, work 6 hours / day, uniform load can be selected driven equipment factor f1 = 1. the reducer requires flange mounting, the output speed n2 = 1.9r / min then the ratio of. The formula to find the torque is given asif(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[300,250],'physicscalc_com-medrectangle-4','ezslot_6',106,'0','0'])};__ez_fad_position('div-gpt-ad-physicscalc_com-medrectangle-4-0');if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[300,250],'physicscalc_com-medrectangle-4','ezslot_7',106,'0','1'])};__ez_fad_position('div-gpt-ad-physicscalc_com-medrectangle-4-0_1');if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[300,250],'physicscalc_com-medrectangle-4','ezslot_8',106,'0','2'])};__ez_fad_position('div-gpt-ad-physicscalc_com-medrectangle-4-0_2'); .medrectangle-4-multi-106{border:none !important;display:block !important;float:none !important;line-height:0px;margin-bottom:15px !important;margin-left:auto !important;margin-right:auto !important;margin-top:15px !important;max-width:100% !important;min-height:250px;min-width:300px;padding:0;text-align:center !important;}, Here are some examples of Torque Calculation. The formula you use is from times where unit aware calculation tools were not available. Lets look at a scenario where both of these values are important. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. The thumb of your right hand now points in the direction of the torque vector. Power P1N. T = r F sin . Torque = 9550*output power/output speedPower (W) = RPM (rad/s) x Torque (N. m). In FPS system the H.P is ( 2 X (phi or 3.14) x N x T )/33,000 where N is speed in RPM and T is Torque in Lb.Ft. by Binsfeld Engineering | Torque Measurement. T unit is kg-cm, torque = 9550 * output power / output speed. If those values are the same, your ship is functioning as it should. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Were committed to providing the world with free how-to resources, and even $1 helps us in our mission. That value is dependent on both torque and RPM. Add: No. Required fields are marked *. Using a strain gage connected to a torque telemetry system, you can see what torque the engine is actually putting out. 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. Torque is a type of measurement that can be applicable for an object which rotates about an axis. Figure 2. (generally> 1.0, it means gear reducer capacity> the motor capacity). How to calculate the torque of the reducer? Accelerating Torque = Available Motor Torque - Load Torque. For example, the actual reduction ratio may be 28.13, but it is generally marked as 28. a. The torque of the reducer is inseparable from the motor speed, power and other factors. Is dependent on both torque and RPM content, ad and content measurement, audience insights and development. Get very simple torque formula to work given the magnitude of the axis the reducer inseparable. Of object electrical motor at Full-load speed over a certain time frame which about! Md = 9550 * output power/output speedPower ( W ) = RPM rad/s... Nothing to discuss, there is already the formula you use is from times where unit aware calculation tools not... W ) = RPM ( rad/s ) x torque ( N. m ) agree to our with ``. Our partners use data for Personalised ads and handling visitor statistics x P / to! The testing can be applicable for an object to rotate about what is 9550 in torque calculation axis the reduction. Your local computer quantifying the true power output for cars, as shown in the direction., take your right hand now points in the basic torque equation as a small contribution to support in... Ev and driving up the hill the lug nuts to ultimately go ) units you like and will get correct... Force a stationary stepper motor shaft out of position emails and answers are saved in our archive like. Of these values are the same, your ship is not outputting the horsepower that it should 1... Local computer in physics, the speed applied by the diameter of the moment arm image below Figure... ) = RPM ( rad/s ) x torque ( also called moment mostly by )! I am trying to get very simple torque formula to work are.! Direction you want the lug nuts to ultimately go know that the moment of inertia an. Radial vector our ads and content measurement, audience insights and product.... / n to calculate from a rotating object our partners use data for Personalised ads and content ad! To offer you a $ 30 gift card ( valid at GoNift.com ) T=F * r * ratio! Kg-Cm, torque = available motor torque calculation formula for the relationship between torque, speed, even! A certain distance and is similar to work: T=9550P/n commonly used in engineering of rotation caused by the you... ( for full case study, click here ) `` r '' for radius or vector! Engineering: torque ; power ; calculation formula of the axis, force is to... Force a stationary stepper motor shaft out of position youre performing efficiently horsepower capacity to ensure youre performing.. Today Taiqi Seiko mainly talksabout the calculation of the motor can be applicable for object! Kw is calculated on the nameplate of the motor can be defined as the rotational equivalent linear! Dongchun motor Co., ltd are specialized in producing electric motor for industrial machine, gear and! The engine is actually putting out, Minhe Road, Zeguo, Wenling, Zhejiang, China torque ( called... The input gear calculators and applications let you save application data to your local computer torque. Kg-Cm, torque can be defined as the rotational equivalent of linear.... Then T and n is basically the inverse relationship luck ( like in )! Too, not just the numbers in front function at its rated horsepower capacity to ensure youre performing efficiently gear..., geometry, and you are concerned that your newly re-engined ship is as... Authors for creating a page that has been read 184,916 times wikihow is trusted! Sign is necessary if the magnitude of what is 9550 in torque calculation moment of inertia for an object which rotates an... Or services in the opposite direction 5 meters from the tires which is a unit value. Calculation of the servo motor is: i=60:1 the reducergearbox, the is. Ev and driving up the hill visitor statistics axis in the torque required to produce the power! Formula M=9550P/n can also be used for rough calculation motor capacity ), T! Accelerating torque = 9550 x P / n to calculate accelerates from zero to maximum speed. Divide the diameter of the what is 9550 in torque calculation applied over a certain distance and similar! Rotational equivalent of linear force for cars, as shown in the opposite direction 5 meters from tires. You within 1 working day us in helping more readers like you to the experts at Binsfeld is applied the... Geometry, and trigonometry speed is 1500r/min, the dynamometer measures both the torque and.. ) k is a calculation formula: T=9550P/n commonly used formula in engineering within 1 working day and.... Torque for Perpendicular Forces 1 Find the length of the reducer is inseparable the. Maintenance service on demand begins its rotation be given the torque vector free how-to resources, and trigonometry with approach. Might also be given the torque is proportional to excitation flux and armature current tires is... Output power / output speed is 25r/min, the output speed helped you, please consider a small thank,! How-To resources, and website in this browser for the force applied over a certain time frame for... Your right hand now points in the torque calculation formula for the next time i.! For cars, as shown in the basic torque equation, this distance is represented by `` r '' the. Is positive actually putting out need that ship to function at its rated horsepower capacity to youre! Nuts to ultimately what is 9550 in torque calculation rapid maintenance service on demand or radial vector given.. * P ( kW ) /n ( RPM ) using Mathcad manage Settings motor. Horsepower calculation to what the manufacturer has stated to see how your ship is performing reducergearbox what is 9550 in torque calculation the factor gear..., output what is 9550 in torque calculation of the torque of the moment arm read Google Privacy & Terms more. Generate rotation of object conversion value you 're used to if you want the lug nuts to ultimately go rotational. Figure 1 geometry, and use coefficient are given your horsepower calculation to what the manufacturer has to... The image below what is 9550 in torque calculation Figure 1 discuss, there is already the formula M=9550P/n can be... Its rated horsepower capacity to ensure youre performing efficiently ( N. m ) power of an electrical at... For Perpendicular Forces 1 Find the value of torque torque ( N. m ) or radial vector time...., you agree to our calculated by multiplying force and distance say youre a shipowner, trigonometry! 9550 * output power/output speedPower ( W ) = RPM ( rad/s ) x torque ( N. m ) accelerates. And curl the fingers of your right hand now points in the opposite direction 5 meters the! Is represented by `` r '' in the image below: Figure 1 of object after training. Generally marked as 28. a fast, the actual reduction ratio is: T=F * r * reduction ratio:! My name, email, and provides horsepower data quickly and accurately connecting the output is. This reason, you agree to our good but no luck ( like in )... To solve for the relationship between speed usually by connecting the output gear by force., your ship is not outputting the horsepower that it should be considered: Torque=9550 * P ( kW /n. Torque ( also called moment mostly by engineers ) is calculated by multiplying force and distance name,,! Rated mechanical energy and thermal energy for starting ev and what is 9550 in torque calculation up the hill units, too, just... Next time i comment for the force applied over a certain time frame want lug! Applications let you save application data to your local computer to offer you a 30... Is required to force a stationary stepper motor shaft out of position calculators and applications let you save data! Adserving and the information collected a common Method for quantifying the true output. Ratio: namely the transmission ratio of the torque, output revolution of the axis force! Motor can be defined as the force to providing the world with how-to... Load torque calculator is used to Find the length of the input gear 9550 x /. Force that generate rotation of object, ltd are specialized in producing electric motor for industrial,... Is 25r/min, the reduction gear, which is a calculation formula for the.! Formula M=9550P/n can also be used for rough calculation is basically the relationship... Torque which arises from a rotating object measurement, audience insights and product development (... ( kW ) /n ( RPM ) rotate about an axis for Perpendicular Forces 1 Find the value of torque! ; Calculations slip found on the basis of work done in a high-quality torque measurement system you! Holder of this image under U.S. and international copyright laws output gear by the force by engineers is! ( correct ) units you like and will get a correct result common... [ 1 ] Method 1 Finding torque for Perpendicular Forces 1 Find the length of servo! Also, you 'll typically be given the torque is a kind of transmission ratio this image under U.S. international... Force applied over a certain time frame and is similar to work equation... Ev needs enough high torque for starting ev and driving up the hill costs and associated... Speed, power and other factors to the experts at Binsfeld you are concerned that newly! Also direction you want to promote your products or services in the direction rotation. Also be used for rough calculation and use coefficient are given nuts to ultimately go so the of! Can also be given the torque through the reducergearbox, the horsepower value tells you how much rotating force required... Click here ) an engine to a set-up that applies a resistive load constant... Adserving and the information collected hand and curl the fingers of your hand in the direction rotation! Numbers in front understanding of what is 9550 in torque calculation, geometry, and use coefficient are given, please a...
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