Njanji za crane ndizofunikira kwambiri pamakina apamwamba. Njanjizi nthawi zambiri zimapangidwa ndi chitsulo chapamwamba kwambiri ndipo zimakhala ngati maziko omwe amathandizira dongosolo lonse la crane. Pali magulu angapo osiyanasiyana a njanji za crane, iliyonse ili ndi mawonekedwe ake komanso mapindu ake.
Gulu loyamba la njanji za crane ndi muyezo wa DIN. Muyezo uwu ndi womwe umagwiritsidwa ntchito kwambiri panjanji ya crane ku Europe, ndipo umadziwika chifukwa cha kulimba kwake komanso mphamvu zake. Njanji zamtundu wa DIN za crane zidapangidwa kuti zizitha kupirira katundu wolemetsa komanso kutentha kwambiri, zomwe zimapangitsa kuti zikhale zoyenera kugwiritsidwa ntchito m'mafakitale.
Gulu lachiwiri la njanji za crane ndi muyezo wa MRS. Mulingo uwu umagwiritsidwa ntchito kwambiri ku North America ndipo umadziwika chifukwa chokana kuvala bwino komanso moyo wautali. Njanji za MRS crane ndizoyenera kugwiritsa ntchito ma voliyumu apamwamba pomwe zolemetsa zimasunthidwa nthawi zonse.
Gulu lachitatu la njanji za crane ndi mulingo wa ASCE. Gululi limagwiritsidwa ntchito kwambiri pamakina apamwamba omwe amafunikira kuchuluka kwapang'onopang'ono mpaka pakati. Njanji za ASCE crane zimadziwika ndi kusinthasintha kwake ndipo zitha kugwiritsidwa ntchito m'njira zosiyanasiyana, kuyambira pamafakitale opepuka mpaka ntchito zomanga wamba.
Gulu lina la njanji za crane ndi JIS standard. Mulingo uwu ndiwofala ku Japan ndi madera ena aku Asia, ndipo umadziwika chifukwa champhamvu komanso kulimba kwake. Njanji za JIS crane zimagwiritsidwa ntchito kwambiri m'mafakitale olemetsa pomwe katundu wambiri amayikidwa panjanji.
Kutengera zomwe mukufuna kugwiritsa ntchito, mutha kusankha njanji ya crane yomwe ikugwirizana ndi zosowa zanu. Ndi njanji zapamwamba za crane m'malo mwake, mutha kusangalala ndi zotetezeka komanso zogwira mtimacrane pamwambadongosolo lomwe limatha kunyamula katundu wolemetsa ndikugwira ntchito bwino kwa zaka zambiri zikubwerazi.
