Asked by: Alimatou Kaempf
business and finance mechanical and industrial engineering industry

How do you calculate gear reduction?

Last Updated: 3rd March, 2020

40
The “reduction” or gearratiois calculated by dividing the number of teeth on thelargegear by the number of teeth on the small gear.Forexample, if an electric motor drives a 13-tooth piniongearthat meshes with a 65-tooth gear, areduction of 5:1is achieved (65 / 13 = 5).

Click to see full answer.

Also asked, what is a gear reduction?

A reduction gear is an arrangement by whichaninput speed can be lowered for a requirement of sloweroutputspeed, with same or more output torque.

Secondly, how do you calculate the torque of a transmission? Divide the diameter of the output gear bythediameter of the input gear. Multiply the torque of themotorby the gear ratio to get the output torque. Forexample, amotor that puts out 10 lb.-feet of torque usedwith a gearreducer with a 10:1 gear ratio will give you 100lb.-feet oftorque at the output gear.

Similarly, you may ask, how do you calculate gears?

Divide the number of teeth on each "driven"gearby the number of teeth on the "drive" gear foreachinterlocking set of gears to calculatetheintermediate gear ratios. In our example, theintermediategear ratios are 20/7 = 2.9 and 30/20 =1.5.

How does a gear reducer work?

The outputgearof a speed reducer has more teeth than theinputgear. So, while the output gear might rotatemoreslowly, reducing the speed of the input, the torqueisincreased. So, to sum up, they take an input power sourceandincrease the torque while decreasing thespeed.

Related Question Answers

Zamira Gair

Professional

Why Do We Need gear?

Gears are used in tons of mechanical devices.Theydo several important jobs, but most important, theyprovide agear reduction in motorized equipment. This is keybecause,often, a small motor spinning very fast can provide enoughpower fora device, but not enough torque.

Jabier Heimsohn

Professional

What does a 4.10 gear ratio mean?

When you hear people refer to numbers like 3.08, 3.73,or4.10, they're talking about the ratio ofthering-and-pinion gears in the rear axle—hence,thenumbers are more accurately 3.08:1, 3.73:1, or 4.10:1.Thatalso means that for every one turn of the ringgear,the pinion will turn 4.11 times.

Golam Vall

Professional

What are the 4 types of gears?

There are three major categories of gears in accordancewiththe orientation of their axes
  • Parallel Axes / Spur Gear, Helical Gear, Gear Rack,InternalGear.
  • Intersecting Axes / Miter Gear, Straight Bevel Gear,SpiralBevel Gear.
  • Nonparallel, Nonintersecting Axes / Screw Gear, Worm, WormGear(Worm Wheel)

Line Linetsky

Explainer

What is the opposite of gear reduction?

What is the opposite of reduction gear?Theterm reduction gear typically refers to a systemofgears in which the output speed is lower than theinputspeed. There are no categorical antonyms forthisterm.

Estafania Ollo

Explainer

What is final reduction?

Final reduction gear ratio can be defined athenumber of revolutions of the propeller shaft required foronecomplete revolution of the rear axle. The FinalGearReduction ratio for a particular vehicle is selectedbasedprimarily on the engine power and torque characteristics aswell asgearbox reduction ratios.

Willam Gardeta

Explainer

What is meant by gear ratio?

Definition of gear ratio. :theratio of the angular speed of the initial or drivingmemberof a gear train or equivalent mechanism to that of thefinalor driven member specifically : the number of enginerevolutionsper revolution of the rear wheels of anautomobile.

Isra Garbers

Pundit

Which gear is used for high speed?

Spur gears are generally seen as bestforapplications that require speed reduction andtorquemultiplication, such as ball mills and crushing equipment.Examplesof high-speed applications that usespurgears – despite their high noise levels–include consumer appliances such as washing machinesandblenders.

Raico Schrijnemakers

Pundit

What is a main reduction gear?

Reduction drives are used in engines of allkindsto increase the amount of torque per revolution of a shaft:thegearbox of any car is a ubiquitous example ofareduction drive. Reduction drives are also usedtodecrease the rotational speed of an input shaft to anappropriateoutput speed.

Adolfina Mckenna

Pundit

What is gear module formula?

"Module" is the unit of size that indicateshowbig or small a gear is. It is the ratio of thereferencediameter of the gear divided by the number ofteeth. Andthis is the concept of gearing. ?Summary? (1)Themoduledescribes the size of a gear.

Kanisha Fenrich

Pundit

What is DP in gear?

DP: Stands for “Diametral Pitch”.It'sa ratio equal to the number of gear teeth per inchofprinting diameter. Pi: The ratio between the diameter of acircleand its circumference.

Landelino Canelas

Teacher

What is the speed ratio?

The ratio is determined by the number of teethoneach gear wheel. Calculate the speed ratio oftwogears by dividing the angular velocity of the outputgear(represented numerically by the number of teeth) by theangularvelocity of the input gear (represented numericallyby thenumber of teeth).

Oumarou Invernici

Teacher

What is the formula for gearing?

The net gearing ratio is calculated by:Netgearing can also be calculated by dividing the total debtbythe total shareholders' equity.

Baha Cove

Teacher

Why do gears fail?

The cause of gear failure can stem from many issues,butthe most common is due to wear, which occurs for differentreasons.Machinery breakdowns are often the result of gear failure.Thecause of gear failure can stem from many issues, but themostcommon is due to wear.

Corono Leones

Teacher

What is a gear motor?

A gear motor is a specific type ofelectricalmotor that is designed to produce high torquewhilemaintaining a low horsepower, or low speed, motoroutput.Gear motors can be found in many differentapplications, andare probably used in many devices in yourhome.

Qingxia De Rioja

Reviewer

Does torque change with gear ratio?

The gear ratio expresses the ratio oftheoutput torque to the input torque. Thus, wecanmultiply the torque supplied at the motor shaft (theinput)by the gear ratio to find the torque at thewheelaxle (the output). Transmitting power through a seriesofgears can also affect rotational speed.

Yaritsa Artemev

Reviewer

How do you measure torque?

Torque is measured in pounds-feet,meaninga force in pounds acting on the end of a levermeasured infeet. For example, if that lug wrench is 2 feet(0.6 m) long, andyou put 100 pounds (45.4 kg) of force on it, youare putting 200pounds-feet (27.65 kg/m) of torque ontothebolt.

Lluis Horas

Reviewer

Do gears increase torque?

The rotary machine's output torqueisincreased by multiplying the torque bythegear ratio, less some efficiency losses. While inmanyapplications gear reduction reduces speed andincreasestorque, in other applications gear reductionis used toincrease speed and reducetorque.

Serafi Gschwilm

Reviewer

What does torque mean?

Torque is the amount of "turning power" youhave,much in the same way you turn a wrench. 369 foot-pounds meansthatif you had a wrench that was 1 foot long, and applied a forceof369 pounds directly perpendicular to that wrench, you would get369foot-pounds of torque.

Wenbin Tegtmann

Supporter

How do you calculate rpm torque?

  1. Torque (lb.in) = 63,025 x Power (HP) / Speed (RPM)
  2. Power (HP) = Torque (lb.in) x Speed (RPM) / 63,025.
  3. Torque (N.m) = 9.5488 x Power (kW) / Speed (RPM)
  4. Power (kW) = Torque (N.m) x Speed (RPM) / 9.5488.