Alajerun ni a shank nini ni o kere kan pipe ehin(thread) ni ayika ipolowo dada ati ki o jẹ awọn iwakọ ti a worm wheel.Worm kẹkẹ ni a jia pẹlu eyin ge lori igun kan lati wa ni ìṣó nipa a worm.The worm gear pair is used to transmit motion between two shafts which are at 90° to each other and lie on a flight.
Alajerun murasilẹAwọn ohun elo:
Dinku iyara,Awọn ẹrọ jia atako ti n ṣe pupọ julọ ti awọn ẹya ara ẹni titiipa, awọn irinṣẹ ẹrọ, awọn ẹrọ atọka, awọn bulọọki pq, awọn olupilẹṣẹ gbigbe ati bẹbẹ lọ