1. Light ụdị a na-akpọkwa mkpa ngalaba Slewing bearing
2. Ọ nwere otu ihe owuwu na Single ahiri Ball slewing bear
3. Ụdị ọkụ Slewing bearing nwere obere arọ, na-atụgharị na-agbanwe agbanwe
4. A na-eji akụkụ dị mkpa na-egbu egbu egbu na ngwa nri, igwe canning na igwe gburugburu ebe obibi.
5. Akwụkwọ ikike anyị bụ ọnwa 12