Imbobo yangaphakathi yebhola le-spherical yangaphandle iyimbobo ye-taper ene-1:12 taper, engafakwa ngqo ku-taper shaft, noma ngosizo lwe-fixed bushing efakwe ku-axleless optical shaft, futhi ingalungisa imvume yokuthwala. .
Kuwuhlobo lweyunithi yokuthwala ehlanganisa i-rolling bearing kanye ne-bearing pedestal.Iningi le-rolling bearing liyisikhungo esithwalayo sendandatho yangaphandle ye-diameter yangaphandle ye-sphere, futhi ngembobo yangaphakathi eyindilinga yezindlu ezithwalayo efakwe ndawonye, ifomu lesakhiwo lihlukile, liphelele futhi lihle ukushintshashintsha.