Ihe ọmụma bụ isi gbasara ihe ọmụma

Dịka akụkụ dị mkpa nke igwe ọgbara ọhụrụ, biarin a na-ejikarị ya eme ihe nke ukwuu. Anyị niile maara ma mara ihe gbasara ya nke ọma.

BearingsỌ na-abụkarị mgbanaka dị n'ime, mgbanaka mpụta, ihe ndị na-agbagharị agbagharị na igbe. Maka ihe ndị a kpọchiri akpọchi, tinye mmanụ na ihe mkpuchi (ma ọ bụ ihe mkpuchi). Nke ahụ bụ ihe ihe ndị a na-akpọ ihe mkpuchi bụ.

Dịka ọnọdụ ọrụ nke ihe e ji ebu ibu si dị, enwere ike ịhọrọ ụdị ihe e ji ebu ibu dị iche iche iji rụọ ọrụ nke ihe e ji ebu ibu nke ọma ma mee ka ndụ ihe e ji ebu ibu ahụ dị ogologo. Anyị kwesịrị ịtụle ihe ndị a mgbe anyị na-ahọrọ ihe e ji ebu ibu:

Ibu radial

Ibu axial

Ihe achọrọ maka RPM

Mgbapụ radial

Mgbapụ nke axial

Okpomọkụ ọrụ

Ihe achọrọ maka mkpọtụ

Ọnọdụ mmanụ mmanụ

 

Ụdị ihe nlereanya a na-ebu ibu nwere koodu tupu, koodu bụ isi na koodu ozi. N'ozuzu, naanị ihe e ji mara ụdị ihe nlereanya a bụ isi. Ụdị ihe nlereanya a na-ebu ibu nwere akụkụ atọ, ụdị koodu ahụ, koodu nha ya na koodu dayameta dị n'ime. Koodu ozi a bụ iji mkpụrụedemede na ọnụọgụ iji gosi nhazi, ndidi na ihe pụrụ iche achọrọ maka ihe ahụ. A na-eji koodu mmalite egosi obere ihe ndị dị n'ime ihe nlereanya ahụ, nke mkpụrụedemede gosiri.

 

1. Aha koodu bụ isi

A na-eji koodu bụ isi egosi dayameta dị n'ime, usoro dayameta, usoro obosara na ụdị ihe eji eburu ya, nke na-abụkarị ruo ọnụọgụ ise, dịka ndị a:

1) A na-egosi dayameta dị n'ime nke ihe na-ebu ibu site na ọnụọgụ mbụ site n'aka nri nke koodu bụ isi.

Dayameta ime nke bear nke nwere dayameta ime nke d=20~480mm na-abụkarị ọtụtụ nke 5, ọnụọgụ abụọ a na-anọchitekwa anya oke nke nha dayameta ime bear nke e kewara site na 5, dịka 04 pụtara d=20mm; 12 pụtara d=60mm na ndị ọzọ. Maka bear nke nwere dayameta ime nke 10mm, 12mm, 15mm na 17mm, koodu dayameta ime bụ 00, 01, 02 na 03 n'otu n'otu. Maka bear nke nwere dayameta ime na-erughị 10mm na karịa 500mm, a na-akọwapụta ụzọ nnọchite anya dayameta ime, biko lee GB/T272-93.

 

2) Usoro dayameta nke ihe na-ebu ibu (ya bụ, usoro mgbanwe na dayameta mpụta na obosara nke ihe na-ebu ibu nwere otu nhazi na otu dayameta dị n'ime) ka egosi site na ọnụọgụ nke atọ site n'aka nri nke koodu bụ isi.

Dịka ọmụmaatụ, maka bearing radial na bearing radial thrust, 0 na 1 na-egosi usoro ọkụ agbakwunyere; 2 na-egosi usoro ọkụ; 3 na-egosi usoro etiti; 4 na-egosi usoro dị arọ. A na-egosi ntụnyere nha n'etiti usoro ahụ na eserese dị n'okpuru. E wezụga usoro ọkụ agbakwunyere na 1, bearing thrust kwekọrọ na ngosipụta nke bearing radial.

3) Usoro obosara nke ihe na-ebu ibu (ya bụ, usoro mgbanwe na obosara nke ihe na-ebu ibu nwere otu nhazi ahụ, dayameta dị n'ime na usoro dayameta) ka a na-egosi site na ọnụọgụ nke anọ site n'aka nri nke koodu bụ isi.

Mgbe e depụtara ntụnyere nke usoro dayameta nke usoro obosara nke Foto 13-4 dị ka usoro 0 (usoro nkịtị), enweghị ike itinye akara koodu usoro obosara O na koodu maka ọtụtụ bearings, mana maka bearings roller gburugburu na bearings roller tapered, a ga-etinye akara koodu usoro obosara 0. A na-akpọ koodu usoro dayameta na koodu usoro obosara n'ozuzu dị ka koodu usoro nha.

 

4) A na-eji ọnụọgụ nke ise nke koodu isi mee ihe nnọchianya nke ụdị ihe e ji eburu ya (maka ihe e ji agagharị agagharị na ihe e ji agagharị agagharị, koodu ahụ bụ mkpụrụedemede).

 

2. Koodu ozi

Koodu ozi nke ihe e ji ebipụta ya bụ iji mkpụrụedemede na ọnụọgụgụ gosi nhazi, ndidi na ihe pụrụ iche achọrọ maka ihe ahụ. E nwere ọtụtụ ihe dị na koodu ozi, leekwa ụfọdụ aha koodu ole na ole a na-ejikarị eme ihe.

1) Koodu nhazi ime bụ igosi nhazi ime dị iche iche nke otu ụdị ihe owuwu ahụ, nke a na-egosi site na mkpụrụedemede na koodu bụ isi. Dịka ọmụmaatụ, a na-anọchite anya bearings bọọlụ kọntaktị akụkụ nwere akụkụ kọntaktị nke 15°, 25° na 40° site na C, AC na B iji gosipụta ọdịiche dị na nhazi ime.

2) A na-ekewa ọkwa ndidi nke bearing ahụ n'ime ọkwa abụọ, ọkwa anọ, ọkwa ise, ọkwa isii, ọkwa isii na akara 0, ngụkọta nke akara isii, site na elu ruo ala, koodu ha bụkwa /PZ, /P4, /PS, /P6, /P6X na /PO. N'ime klas ndidi, klas 6X metụtara naanị bearing roller dị mkpụmkpụ; ọkwa 0 bụ ọkwa nkịtị, nke a na-anaghị akara na koodu bearing wiil.

3) Usoro radial clearance nke a na-ejikarị eme ihe na-ekewa otu otu, otu abụọ, otu 0, otu atọ, otu anọ na otu ise, mkpokọta otu isii, radial clearance na-esi na obere ruo nnukwu. Group o clearance bụ otu clearance a na-ejikarị eme ihe, nke a na-anaghị akara na koodu bearing, na ndị ọzọ fọdụrụ na clearance groups bụ /CI, /CZ, /C3, /C4 na /CS na koodu bearing.

 

3. Tinye koodu tupu oge eruo

A na-eji aha mbụ nke ihe e ji ebu ibu egosi akụkụ ndị dị n'ime ihe e ji ebu ibu, nke e ji mkpụrụedemede gosi. Dịka ọmụmaatụ, a na-eji L anọchite anya mgbanaka nke ihe e ji ebu ibu nke a na-ekewapụ; K na-egosi ihe ndị na-atụgharị na ihe ndị dị n'ime ihe e ji ebu ibu, wdg.

 

E nwere ọtụtụ ụdị bearing na-agagharị agagharị n'ọrụ bara uru, koodu bearing ndị kwekọrọ na ha dịkwa mgbagwoju anya karịa. Koodu ewebatara n'elu bụ akụkụ kachasị mfe na nke a na-ejikarị eme ihe na koodu bearing, ị nwekwara ike ịchọpụta ma lelee bearing ndị a na-ejikarị eme ihe ma ọ bụrụ na ị maara akụkụ a nke koodu ahụ. Maka usoro koodu zuru ezu nke bearing ndị na-agagharị agagharị, biko lee GBT272.