Phapang pakeng tsa ketane ea 12B le ketane ea 12A

1. Mefuta e fapaneng

Phapang pakeng tsa ketane ea 12B le ketane ea 12A ke hore lihlopha tsa B ke tsa borena 'me li lumellana le litlhaloso tsa Europe (haholo-holo tsa Brithani)' me hangata li sebelisoa linaheng tsa Europe;letoto la A le bolela metric mme le lumellana le boholo ba litekanyetso tsa ketane ea Amerika 'me hangata le sebelisoa United States le Japane.le linaha tse ling.

2. Mefuta e fapaneng ea boholo

Sekhahla sa liketane tse peli ke 19.05MM, 'me boholo bo bong bo fapane.Theko ea boleng (MM):

Mekhahlelo ea ketane ea 12B: bophara ba rolara ke 12.07MM, bophara bo ka hare ba karolo e ka hare ke 11.68MM, bophara ba pin shaft ke 5.72MM, 'me botenya ba poleiti ea ketane ke 1.88MM;
12A mekhahlelo ea ketane: bophara ba rolara ke 11.91MM, bophara bo ka hare ba karolo e ka hare ke 12.57MM, bophara ba pin shaft ke 5.94MM, 'me botenya ba poleiti ea ketane ke 2.04MM.

3. Litlhoko tse fapaneng tsa litlhaloso

Liketane tsa letoto la A li na le karolo e itseng ho li-rollers le lithapo, botenya ba letlapa le ka hare la ketane le letlapa le ka ntle la ketane li lekana, 'me matla a lekanang a matla a tsitsitseng a fumanoa ka liphetoho tse fapaneng.Leha ho le joalo, ha ho na karo-karolelano e totobetseng lipakeng tsa boholo bo ka sehloohong le molumo oa likarolo tsa letoto la B.Ntle le tlhaloso ea 12B e ka tlaase ho letoto la A, litlhaloso tse ling tsa letoto la B li tšoana le lihlahisoa tsa A series.