Chidziwitso choyambira cha kunyamula

Monga gawo lofunika kwambiri la makina amakono, maberiya amagwiritsidwa ntchito kwambiri. Tonsefe timadziwa zambiri kapena zochepa za izo.

MabeyaKawirikawiri zimakhala ndi mphete yamkati, mphete yakunja, zinthu zozungulira ndi khola. Pa mabearing otsekedwa, onjezani mafuta ndi zomatira (kapena zishango). Ndicho chimene mabearing amatanthauza.

Malinga ndi momwe zimagwirira ntchito pa bearing, mitundu yosiyanasiyana ya ma bearing ingasankhidwe kuti igwire bwino ntchito ya bearing ndikuwonjezera moyo wa bearing. Tiyenera kuganizira zinthu zotsatirazi posankha ma bearing:

Kulemera kwa radial

Katundu wozungulira

Zofunikira za RPM

Kuthamanga kwa radial

Kuthamanga kwa Axial

Kutentha kogwira ntchito

Zofunikira pa phokoso

Mkhalidwe wa mafuta odzola

 

Chitsanzo cha bearing nthawi zambiri chimakhala ndi pre-code, basic code ndi post-code. Kawirikawiri, bearing design imasonyezedwa ndi basic design yokha. Chitsanzo choyambirira nthawi zambiri chimakhala ndi magawo atatu, mtundu wa code, kukula kwa code ndi inner diameter code. Post-code imagwiritsa ntchito zilembo ndi manambala kusonyeza kapangidwe, kulolerana ndi zofunikira zapadera za zinthuzo. Prefix code imagwiritsidwa ntchito kusonyeza zigawo zazing'ono za bearing, zomwe zimasonyezedwa ndi zilembo.

 

1. Dzina loyambira la code

Khodi yoyambira imagwiritsidwa ntchito kusonyeza m'mimba mwake wamkati, m'mimba mwake, m'lifupi mwake ndi mtundu wa chogwirira, nthawi zambiri mpaka manambala asanu, motere:

1) M'mimba mwake wa mkati mwa chotengeracho mukuwonetsedwa ndi nambala yoyamba kuchokera kumanja kwa code yoyambira.

M'mimba mwake wa bearing wokhala ndi m'mimba mwake wamkati wofanana wa d=20~480mm nthawi zambiri umakhala wochulukitsa wa 5, ndipo manambala awiriwa akuyimira quotient ya kukula kwa m'mimba mwake wamkati wogawidwa ndi 5, monga 04 amatanthauza d=20mm; 12 amatanthauza d=60mm ndi zina zotero. Pa mabearing okhala ndi m'mimba mwake wamkati wa 10mm, 12mm, 15mm ndi 17mm, ma code a m'mimba mwake wamkati ndi 00, 01, 02 ndi 03 motsatana. Pa mabearing okhala ndi m'mimba mwake wamkati wochepera 10mm ndi woposa 500mm, njira yoyimira m'mimba mwake wamkati yafotokozedwa mwanjira ina, chonde onani GB/T272-93.

 

2) Mndandanda wa mainchesi a chogwirira (monga, mndandanda wa kusintha kwa mainchesi akunja ndi m'lifupi mwa chogwirira chokhala ndi kapangidwe kofanana ndi mainchesi amkati omwewo) ukuwonetsedwa ndi nambala yachitatu kuchokera kumanja kwa code yoyambira.

Mwachitsanzo, pa ma radial bearing ndi ma radial thrust bearing, 0 ndi 1 akuwonetsa mndandanda wowonjezera wa kuwala; 2 akuwonetsa mndandanda wowunikira; 3 akuwonetsa mndandanda wapakati; 4 akuwonetsa mndandanda wolemera. Kuyerekeza kukula pakati pa mndandanda kukuwonetsedwa pachithunzi chili pansipa. Kupatula mndandanda wowonjezera wa kuwala ndi 1, thrust bearing ikugwirizana ndi mawonekedwe a radial bearing.

3) Mndandanda wa m'lifupi wa chogwirira (monga, mndandanda wa kusintha kwa m'lifupi mwa chogwirira chokhala ndi kapangidwe komweko, m'mimba mwake wamkati ndi m'mimba mwake) ukuwonetsedwa ndi nambala yachinayi kuchokera kumanja kwa code yoyambira.

Pamene kufananiza kwa mndandanda wa m'mimba mwake wa mndandanda wa m'lifupi wa Chithunzi 13-4 kwalembedwa ngati mndandanda wa 0 (mndandanda wamba), khodi ya m'lifupi O singatchulidwe mu khodi ya ma bearing ambiri, koma pa ma bearing ozungulira ozungulira ndi ma bearing ozungulira opendekeka, khodi ya m'lifupi 0 iyenera kulembedwa. Ma code a m'lifupi mwake ndi ma code a m'lifupi mwake onse amatchedwa ma code a m'lifupi mwake.

 

4) Khodi ya mtundu wa bearing imayimiridwa ndi nambala yachisanu kuchokera kumanja kwa code yoyambira (ya ma bearing a cylindrical roller ndi ma bearing a needle roller, code ndi chilembo).

 

2. Khodi ya positi

Post-code ya bearing ndi kugwiritsa ntchito zilembo ndi manambala kusonyeza kapangidwe, kulekerera ndi zofunikira zapadera za zinthuzo. Pali zambiri zomwe zili mu post-code, ndipo apa pali mayina angapo a code omwe amagwiritsidwa ntchito kwambiri.

1) Khodi ya kapangidwe ka mkati imasonyeza kapangidwe kosiyana ka mkati ka mtundu womwewo wa chogwirira, chomwe chikuwonetsedwa ndi zilembo zotsatiridwa ndi code yoyambira. Mwachitsanzo, mabearing a mpira wolumikizana ndi angular omwe ali ndi ma angles olumikizana a 15°, 25° ndi 40° motsatana amaimiridwa ndi C, AC ndi B kuti awonetse kusiyana kwa kapangidwe ka mkati.

2) Giredi ya tolerance ya bearing yagawidwa m'magiredi awiri, magiredi anayi, magiredi asanu, magiredi asanu ndi limodzi, magiredi asanu ndi limodzi ndi magiredi asanu ndi limodzi ndi magiredi asanu ndi limodzi, magiredi asanu ndi limodzi ndi asanu ndi limodzi, kuyambira pamwamba mpaka pansi, ndipo ma code awo ndi /PZ, /P4, /PS, /P6, /P6X ndi /PO. Pakati pa ma class a tolerance, kalasi ya 6X imagwira ntchito kokha pa ma tapered roller bearing; Giredi 0 ndi giredi wamba, yomwe siili mu wheel bearing code.

3) Mndandanda wa ma bearing radial clearance omwe amagwiritsidwa ntchito kwambiri umagawidwa m'magulu 1, magulu awiri, magulu 0, magulu atatu, magulu 4 ndi magulu 5, magulu onse 6, ndipo ma radial clearance kuyambira ang'onoang'ono mpaka akulu. Gulu la o clearance ndi gulu la ma bearing clearance lomwe limagwiritsidwa ntchito kwambiri, lomwe silinalembedwe mu bearing code, ndipo magulu ena onse otsalawo akuimiridwa ndi /CI, /CZ, /C3, /C4 ndi /CS mu bearing code.

 

3. Khodi yoyambirira

Chiyambi cha chizindikiro cha bearing chimagwiritsidwa ntchito kusonyeza magawo ang'onoang'ono a bearing, omwe amasonyezedwa ndi zilembo. Mwachitsanzo, L imagwiritsidwa ntchito kuyimira mphete yolekanitsidwa ya bearing yolekanitsidwa; K imatanthauza zinthu zozungulira ndi zigawo za bearing, ndi zina zotero.

 

Pali mitundu yambiri ya ma rolling bearings omwe amagwiritsidwa ntchito, ndipo ma bearing code ofanana nawonso ndi ovuta kwambiri. Khodi yomwe yatchulidwa pamwambapa ndi gawo losavuta komanso logwiritsidwa ntchito kwambiri la bearing code, ndipo mutha kuzindikira ndikuwona bearing yomwe imagwiritsidwa ntchito kwambiri ngati mukudziwa bwino gawo ili la code. Kuti mudziwe njira yatsatanetsatane ya ma rolling bearings, chonde onani GBT272.