
Usoro nke UC na-ezo aka na ahaziri ahazi, ejiri ọtụtụ ebe Ohiri isi ngọngọ nkeji bọọlụ nwere aka nkwụnye aka. N'ime isi ha bụ bọọlụ nwere oghere dị omimi nke nwere a dayameta mpụta okirikiri (SPB) emebere ka ọ dabara n'ime oghere okirikiri dabara adaba nke ụlọ nkedo. Na-akwado metric akụkụ, A na-ahazi usoro isiokwu a maka ngwa mmepụta ihe na-achọ ikike ibu dị elu, nrụnye kwụ ọtọ, na arụmọrụ a pụrụ ịdabere na ya.
| ISO | UCFL305 | |
| Nrụpụta Mba. | UC305 | |
| Ebe obibi | FL305 | |
| Nha Bolt | M16 | |
| Obere dayameta | d | 25 mm |
| Mgbakọta Ogologo | a | 150 mm |
| oghere oghere Bolt | e | 113 mm |
| Ọgwụgwụ Center of Bearing from Housing | i | 16 mm |
| Obosara flange | g | 13 mm |
| Obosara ụlọ | l | 29 mm |
| Nha oghere Bolt | s | 19 mm |
| N'ozuzu ogologo | b | 80 mm |
| N'ozuzu obosara unit | z | 39 mm |
| Obosara mgbanaka ime | B | 38 mm |
| Center of Bearing from Bearing End | n | 15 mm |
| Ibu ibu | 0,891 n'arọ | |