
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 | UCFL217-55 | |
| Nrụpụta Mba. | UC217-55 | |
| Ebe obibi | FL217 | |
| Nha Bolt | 7/8 | |
| Obere dayameta | d | 3-7/16 nke |
| Mgbakọta Ogologo | a | 12 mm |
| oghere oghere Bolt | e | 9-49/64 nke |
| Ọgwụgwụ Center of Bearing from Housing | i | 1-27/64 nke |
| Obosara flange | g | 15/16 nke |
| Obosara ụlọ | l | 2-15/32 n'arọ |
| Nha oghere Bolt | s | 63/64 nke |
| N'ozuzu ogologo | b | 7-15/32 n'arọ |
| N'ozuzu obosara unit | z | 3-7/16 nke |
| Obosara mgbanaka ime | B | 3,374 n'arọ |
| Center of Bearing from Bearing End | n | 1.343 n'arọ |
| Ibu ibu | 8,4 n'arọ | |