ʻO ka hui pū ʻana he ʻelua a ʻoi aku paha nā hubs a me nā modula disc he nui, i hoʻokaʻawale ʻia i hoʻokahi disc a me nā ʻano disc pālua, i hoʻopaʻa ʻia e ka clamping screws, elastic compensation for radial, angular and axial deviations, a me ka torque nui, haʻahaʻa inertia, rigidity kiʻekiʻe, kiʻekiʻe. ʻO ka naʻau a me nā ʻano ʻē aʻe, ke kūpaʻa a me ka pale ʻana o ka corrosion o ka hui ʻana e hoʻomaikaʻi nui ʻia ma o ka mālama ʻana i ka ʻili kūikawā. Loaʻa nā Hubs i nā mea 7075 a me nā mea kila 45 #, a ua hana ʻia ka Disc i nā mea SUS304. He kūpono no nā kaʻa servo a me nā kaʻa stepper.