
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 | UCFL207-21 | |
| Nrụpụta Mba. | UC207-21 | |
| Ebe obibi | FL207 | |
| Nha Bolt | 1/2 | |
| Obere dayameta | d | 1-5/16 nke |
| Mgbakọta Ogologo | a | 6-11/32 n'arọ |
| oghere oghere Bolt | e | 5-1/8 n'arọ |
| Ọgwụgwụ Center of Bearing from Housing | i | 3/4 nke anụ ọhịa |
| Obosara flange | g | 35/64 nke |
| Obosara ụlọ | l | 1-11/32 nke anụ ọhịa |
| Nha oghere Bolt | s | 5/8 nke |
| N'ozuzu ogologo | b | 3-35/64 nke |
| N'ozuzu obosara unit | z | 1-3/4 nke anụ ọhịa |
| Obosara mgbanaka ime | B | 1.689 nke |
| Center of Bearing from Bearing End | n | 0.689 n'arọ |
| Ibu ibu | 1.11 n'arọ | |