
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 | UCHA212 | |
| Nrụpụta Mba. | UC212 | |
| Ụlọ Mba. | HA212 | |
| Obere dayameta | d | 60 mm |
| Ebe etiti oche okirikiri dị elu | h | 102 mm |
| Akụkụ | w | 173 mm |
| N'ozuzu ogologo | b | 142 mm |
| Akụkụ | c | 9 mm |
| Elu nke mgbakwunye njedebe | a | 60 mm |
| Elu nke oghere mgbakwunye | s | G1-1/4 nke |
| Akụkụ | l | 28 mm |
| Obosara mgbanaka ime | B | 65.1 mm |
| Center of Bearing from Bearing End | n | 25.4 mm |
| Ibu ibu | 3,54 n'arọ | |