
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 | UCFL312 | |
| Nrụpụta Mba. | UC312 | |
| Ebe obibi | FL312 | |
| Nha Bolt | M27 | |
| Obere dayameta | d | 60 mm |
| Mgbakọta Ogologo | a | 270 mm |
| oghere oghere Bolt | e | 212 mm |
| Ọgwụgwụ Center of Bearing from Housing | i | 33 mm |
| Obosara flange | g | 22 mm |
| Obosara ụlọ | l | 56 mm |
| Nha oghere Bolt | s | 31 mm |
| N'ozuzu ogologo | b | 160 mm |
| N'ozuzu obosara unit | z | 78 mm |
| Obosara mgbanaka ime | B | 71 mm |
| Center of Bearing from Bearing End | n | 26 mm |
| Ibu ibu | 5,771 n'arọ | |