Katika kifurusha, kipengele cha kuzunguka kinachowekwa kwa usawa (slewing ring bearing) kimepangwa kati ya nyumba ya kifurusha na msingi wa chini (undercarriage) ya kifurusha, na muundo wake wa kipekee unaruhusu nyumba ya kifurusha na vifaa vyake kuzunguka kwa mzunguko wa milele kupitia mchakato wa kuzunguka (swing drive) uliojumuishwa kwenye nyumba.
Matarajio ya matumizi mengi huathiri uchaguzi wa kipengele cha kuzunguka kinachofaa. Kupitia hizi, kuna mambo kama vile kasi ya kuzunguka, ulinzi dhidi ya uchafuzi, usahihi, upinzani wa msukumo, na vikomo vya joto la mazingira ya kufanya kazi.
| Kipengele cha kuzunguka cha kuchimba | ||||||
|---|---|---|---|---|---|---|
| Mfano | Mfano | Mfano | Mfano | Mfano | Mfano | Mfano |
| PC30-1 | PC360-7 | CAT374D | ZX240 | SH120-2 | HD770SE | DH370-7 |
| PC30-2 | PC400-3 | CAT390D | ZX270 | SH120A3 | HD770-1 | DH420 |
| PC40 | PC400-5 | CAT336E | ZX330 | SH120-3 | HD770-2 | DX420 |
| PC50-7 | PC450-5 | CAT349F | ZX350-5 | SH120Z3 | HD800-7 | DH500 |
| PC55 | PC400-6 | CAT336GC | ZX450H | SH120C3 | HD800-5 | DX500 |
| PC56 | PC400-7 | EX40-1 | ZAX650-3 | SH135 | HD820-3 | DX520 |
| PC60-5 | PC450-6 | EX60-1 | ZAX870-3 | SH140 | HD820-1 | R60-5 |
| PC60-6/76 | PC450-7 | EX60-2 | SK03 | SH145 | HD900-7 | R60-7 |
| PC60-6/80 | PC650 | EX60-3 | SK60C | SH260 | HD1023 | R80-7 |
| PC60-7 | PC750 | EX60-5 | SK60-5 | SH265 | HD1250 | R110-7 |
| PC60-7 | PC850 | EX70 | SK60-8 | SH200A1 | DH55-5 | R130-5 |
| PC70-8 | PC1250 | EX75 | SK75-8 | SH200A2 | DX60 | R130-7 |
| PC75UU | CAT306 | EX100-1 | SK100 | SH200A3 | DH60 | R190 |
| PC90-6 | CAT70B | EX120-1 | SK09 | SH200C2 | DH80GO | R200-5 |
| PC100-5 | CAT307B | EX120-2 | SK120-5 | SH200C3 | DH80-7 | R210 |
| PC120-5 | CAT307C | EX120-3 | SK130-8 | SH200Z3 | DH150 | R210-5 |
| PC120-6 | CAT307D | EX120-5 | SK135 | SH220 | DX150 | R210-3 |
| PC120-6 | CAT307E | EX160 | SK140-8 | SH240-5 | DH200-3 | R200-7 |
| PC150-5 | CAT308 | EX200-1 | SK200-1 | SH240-3 | DH220-2 | R210-7 |
| PC150-7 | CAT308C | EX200-2 | SK200-2 | SH225 | DH220-3 | R215-7 |
| PC160-7 | CAT308E | EX200-3 | SK200-3 | SH280 | DH220-5 | R220-5 |
| PC200-1 | CAT110 | EX200-5 | SK200-5 | SH300-2 | DH220-7LC | R225-7 |
| PC200-2 | CAT312C | EX210-5 | SK200-6 | SH330 | DH220-9 | R225-9 |
| PC200-3 | CAT312D | EX220-5 | SK210-6E | SH350 | DH215-7 | R260LC-7 |
| PC200-5 | CAT313D | EX300-1 | SK200-8 | SH430 | DH215-9 | R290 |
| PC200-8 | CAT120 | EX300-2 | SK210-10 | TB35 | DH225-7 | R300 |
| PC210-7 | CAT315D | EX300-3 | SK07-1 | TB45 | DH225-9 | R305-7 |
| PC220-3 | CAT318 | EX300-5 | SK907B | TB60 | DX225-9 | R335-7 |
| PC220-5 | CAT200B | EX400-1 | SK07-N2CU | TB175 | DH258 | R360 |
| PC200-6 | CAT312B | EX400-3 | SK235 | TB1135 | DH280 | R450-7 |
| PC200-6 | CAT320B | ZAX60 | SK230-6 | TB1140 | DH290 | R330-9S |
| PC200-7 | Cat320c | ZAX60-3 | SK260-8 | HD250-7 | DH300-5 | R500-7 |
| PC220-7 | Cat320d | ZAX70 | SK350-8 | HD450-5 | DH300-7 | EC55 |
| PC210-7K | CAT320L | ZAX80 | SK450-6E | HD450-7 | DX260 | EC140B |
| PC228/32 | CAT325B | ZAX120 | IHI60 | HD512 | DX300 | EC160B |
| PC228/40 | CAT325C | ZAX130 | IHI80 | HD513 | DX340 | EC210 |
| PC300-2 | CAT324 | ZX200 | IHI100 | HD516 | DH10L | EC210B |
| PC300-3 | CAT326F | Zx210 | SH60-1 | HD550 | DH320 | EC240 |
| PC300-5 | CAT330C | ZX200-3 | SH120A1 | HD100 | DH330-3 | EC290 |
| PC300-6 | CAT336D | ZX225U | SH120-1 | HD700-5 | DH340 | EC300 |
| PC350-6 | CAT345C | ZAX230 | SH120A2 | HD700-7 | DH400-V | EC360 |
Kabla ya kufanya usakinisho, hakikishia mfano,
Angalia pembe ya fomu ya giri,
Safu za usakinisho za kiringi cha kuzunguka na mafungu ya juu na ya chini yatakuwa safu na bila vitu visivyofaa,
Tumia kifurushi cha kuchunguza ufupi kati ya kiringi cha kuzunguka na mafungu,
Ikiwa ufupi unapita mahitaji katika jedwali lifuatalo, tumia vishimba vya chuma au ya shaba ili kujaza,
Ili kuzuia ubadilisho au kuvimba kwa kiringi cha kuzunguka baada ya kufunga mikanda,
Alama ya “S” kwenye ringi ndani na nafasi ya kuvimba kwenye ringi nje zinapaswa kusakinishwa 90° mbali na eneo la mzigo mkuu,
Alama ya “S” kwenye ringi ya ndani, nafasi ya kuzungukwa kwenye ringi ya nje,
Mifupa ya ndani ya ringi ya kuzunguka inapaswa kupandwa kwa njia ya kusisimua katika mwelekeo wa 180°,
Tazama jedwali lililounganishwa kwa thamani ya nguvu ya kupanda,
Na uhakiki kama vifungo vya ndani na vya nje vya ringi ya kuzunguka vimebaki vyema,
Jaza kikapu cha mafuta ya kuzunguka kwa kiasi cha mafuta ya kuchuma kinachofaa,
Inashauriwa: kibao 1 kwa kiwango cha toni 20, kibao 1.5 kwa kiwango cha toni 30,
Ondoa wazi kwenye upande uliouzwa wa giri ndogo na nafasi iliyopaintwa kijani,
Ikiwa wazi ni mdogo sana, mzunguko utakuwa mchanganyiko; ikiwa ni kubwa sana, mshale utaondoka sana kwa upande mmoja na mwingine,
Kwa ajili ya mifupa kwenye ringi ya nje, inashauriwa kutumia mifupa mpya,
Na kupanda kwa njia ya kusisimua katika mwelekeo wa 180° ili kuhakikisha kwamba mifupa ina nguvu ya kwanza ya kushikilia sawa,
Zungusha kivinjari cha kuzunguka polepole kwa angalau mara tatu,
Angalia kwa makini ikiwa kuzunguka ni sawa,
Mafuta ya kupendekezwa: Mafuta ya litium ya shinikizo la juu ya aina ya 2# au 3#,
Muda wa kujaza tena nyenzo za kuzunguka: Ongeza mafuta kila masaa 200 au kila mwezi wa pili,
Njia ya kujaza tena: Ongeza mafuta wakati unazunguka, na kiasi kidogo cha mafuta kishapita kwenye kifungo.
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