Lisebelisoa tsa lipolaneteseta likere tse kahare ke karolo ea bohlokoa ea li-gearbox tsa polanete, tse sebelisoang haholo lits'ebetsong tse hlokang letsoalo le phahameng la torque le moralo o kopaneng. Li-gear tsena tse ka hare, tse tsejoang hape e le li-ring gear, li na le meno bokaholimo ba tsona bo kahare mme li sebetsa 'moho le lisebelisoa tsa letsatsi le li-planet gears tsa epicycloidal ho aba po.
E entsoe ka lisebelisoa tse matla tse kang tšepe ea alloy kapa litšepe tse thata, li-gear tse ka hare li etselitsoe ho sebetsana le meroalo e boima ha li ntse li boloka ho tsamaisana hantle. Li nolofalletsa phetisetso ea torque e boreleli, li-gear ratios tse phahameng, le ho sisinyeha ho fokotsehileng, ho li etsa hore e be tse loketseng liindasteri tse kang liroboto, likoloi, sebaka sa sefofane le se ka nchafatsoang.
E ka tloaeleha ka boholo, boemo ba meno le thepa, likere tsena li fana ka litlhoko tse ikhethileng bakeng sa lits'ebetso tse fapaneng. Ebang ke ho fokotsa lebelo, ho holisa torque, kapa ho ntlafatsa matla, lisebelisoa tsa polanetelisebelisoa tsa ka hare li bohlokoa bakeng sa ho fihlela ts'ebetso e ikhethang le ts'epahalo ho com
Re na le lisebelisoa tsa tlhahlobo tse tsoetseng pele joalo ka mochini oa ho metha oa Brown & Sharpe o hokahanyang tse tharo, setsi sa tekanyo sa Colin Begg P100/P65/P26, sesebelisoa sa Jeremane sa Marl cylindricity, Japane roughness tester, Optical Profiler, projeke, mochini o methang bolelele joalo-joalo ho etsa bonnete ba hore oa ho qetela ke oa ho qetela. ho hlahloba ka nepo le ka ho feletseng .