1. Adadin haƙoran Z Jimlar adadin haƙoran akayan aiki.
2, modulus m Samfurin nisan haƙori da adadin haƙoran daidai yake da kewayen da'irar rabawa, wato, pz= πd,

inda z lamba ce ta halitta kuma π lamba ce mai rashin hankali. Domin d ya zama mai hankali, ana kiran yanayin cewa p/π mai hankali ne. Wato: m=p/π
3, diamita na da'irar indexing d an ƙayyade girman haƙorin gear bisa ga wannan da'irar d=mz kwafi cikakken rubutu 24, diamita na da'irar sama d. Kuma diamita na da'irar tushen de cikakken allo karatu daga dabarar lissafi na tsayin da'irar da tsayin tushen, ana iya samo dabarar lissafi na diamita na da'irar crest da diamita na da'irar tushen:
d.=d+2h.=mz+2m=m(z+2)

Mafi girman modulus na ƙafafun, mafi girma da kauri hakora, idan adadin hakoran

kayan aikitabbas ne, girman radial na tayoyin ya fi girma. An tsara ka'idojin jerin modular bisa ga buƙatun ƙira, kerawa da dubawa. Ga gears masu haƙoran da ba su da madaidaiciya, modulus ɗin yana da bambanci tsakanin modulus na yau da kullun mn, ƙarshen modulus ms da axial modulus mx, waɗanda suka dogara da rabon firam ɗinsu (firam na yau da kullun, firam na ƙarshe da firam na axial) zuwa PI, kuma suma suna cikin milimita. Ga bevel gear, module ɗin yana da babban ƙarshen module me, matsakaicin module mm da ƙaramin ƙarshen module m1. Ga kayan aikin, akwai modulus na kayan aiki masu dacewa da mo da sauransu. Ana amfani da kayayyaki na yau da kullun sosai. A cikin injin gear na ma'auni, tuƙi, bel ɗin gear synchronous da ratchet, haɗin gear, spline da sauran sassa, modulus na yau da kullun shine mafi mahimmancin siga. Yana taka rawar siga ta asali a cikin ƙira, ƙera da kula da sassan da ke sama.

1) Modulus ɗin yana nuna girman haƙoran. Module ɗin R shine rabon matakin da'irar rabawa zuwa PI (π), wanda aka bayyana a cikin millimeters (mm). Baya ga kayayyaki, muna da Diametral pitch (CP) da DP (Diametral pitch) don bayyana girman haƙoran. Diametral pitch shine tsawon baka na rabawa tsakanin maki daidai akan haƙoran biyu da ke maƙwabtaka.

2) Menene "diamita na da'irar index"? Diamita na da'irar index shine diamita na ma'auni nakayan aikiManyan abubuwa guda biyu da ke tantance girman kayan aikin sune modulus da adadin haƙoran, kuma diamita na da'irar rabawa daidai yake da samfurin adadin haƙoran da modulus (fuskar ƙarshe).
3) Menene "Kusurwar matsin lamba"? Kusurwar da ke tsakanin layin radial a mahadar siffar hakori da tangent siffar hakori na wurin ana kiranta Kusurwar matsin lamba na da'irar tunani. Gabaɗaya, Kusurwar matsin lamba tana nufin Kusurwar matsin lamba na da'irar nuna alama. Kusurwar matsin lamba da aka fi amfani da ita ita ce 20°; duk da haka, ana amfani da gears tare da kusurwar matsin lamba na 14.5 °, 15°, 17.5 °, da 22.5°.

4) Menene bambanci tsakanin tsutsar kai ɗaya da tsutsar kai biyu? Adadin haƙoran tsutsar ana kiransa da "adadin kai", wanda yayi daidai da adadin haƙoran gear ɗin. Da yawan kai a wurin, haka nan girman kusurwar jagora yake.

5) Yadda ake bambance R (mai hannun dama)? L (hagu) Shaft ɗin gear a tsaye ƙasa mai faɗi da gear ɗin haƙori yana karkata zuwa dama shine gear ɗin dama, karkata zuwa hagu shine gear ɗin hagu.

6) Menene bambanci tsakanin M (modulus) da CP (pitch)? CP (circular pitch) shine zagayen haƙoran da ke kan da'irar index. Naúrar iri ɗaya ce da modulus a cikin millimeters. CP da aka raba ta PI (π) yana samar da M (modulus). An nuna alaƙar da ke tsakanin M (modulus) da CP kamar haka. M (modulus) =CP/π (PI) Dukansu raka'o'i ne na girman haƙori. (Ana kiran kewayen rabawa = nd=zpd=zp/ l/PI

7) Menene "backlash"? Gibin da ke tsakanin saman haƙoran gears guda biyu lokacin da aka haɗa su. Backlash siga ce mai mahimmanci don aiki mai santsi na gear hacking. 8) Menene bambanci tsakanin ƙarfin lanƙwasa da ƙarfin saman haƙori? Gabaɗaya, ya kamata a yi la'akari da ƙarfin gears daga ɓangarori biyu: lanƙwasa da ƙarfin saman haƙori. Ƙarfin lanƙwasa shine ƙarfin haƙorin da ke watsa iko don tsayayya da karyewar haƙori a tushe saboda aikin ƙarfin lanƙwasa. Ƙarfin saman haƙori shine ƙarfin gogayya na saman haƙori yayin maimaita taɓa haƙorin da aka haɗa. 9) A cikin ƙarfin lanƙwasa da ƙarfin saman haƙori, wane ƙarfi ake amfani da shi azaman tushen zaɓar gear? Gabaɗaya, ana buƙatar tattauna ƙarfin lanƙwasa da saman haƙori. Duk da haka, lokacin zaɓar gears waɗanda ba a amfani da su akai-akai, gears na hannu, da gears na raga mai ƙarancin gudu, akwai lokuta inda ake zaɓar ƙarfin lanƙwasa kawai. A ƙarshe, ya rage ga mai ƙira ya yanke shawara.