Zhongshan Rizda Castor Manufacturing Co., Ltd. Ili ku Zhongshan City, Guangdong Province, umodzi mwa mizinda yapakati pa Pearl River Delta, yokhala ndi malo okwana masikweya mita oposa 10000. Ndi kampani yopanga mawilo ndi ma Castor yaukadaulo yopatsa makasitomala mitundu yosiyanasiyana ya kukula, mitundu, ndi mitundu ya zinthu zomwe zimagwiritsidwa ntchito m'njira zosiyanasiyana. Kampaniyo yomwe idayambitsa kampaniyo inali BiaoShun Hardware Factory, yomwe idakhazikitsidwa mu 2008 yomwe yakhala ndi zaka 15 zokumana nazo pakupanga ndi kupanga.
Elastomer ya PU castors ili ndi zinthu zabwino monga kukana kukwawa, kukana kukokoloka kwa mankhwala, mphamvu zambiri, kusinthasintha kwakukulu, kukana kupsinjika kochepa, kukana kutopa, kukana kugwedezeka mwamphamvu, kukana kung'ambika, kukana kung'ambika, kukana kuwala kwa dzuwa, kukana katundu wambiri komanso kukana kugwedezeka. Chotengera cha mpira umodzi chimagwiritsa ntchito njira yosakanikirana ya kugwedezeka kotsetsereka ndi kugwedezeka kozungulira, ndipo rotor ndi stator zimapaka mipira ndikukhala ndi mafuta odzola. Zimathetsa mavuto a nthawi yochepa yogwira ntchito komanso kusagwira ntchito kosakhazikika kwa chotengera mafuta.
1. Kukana kuvala ndikwabwino kwambiri, makamaka ngati pali madzi, mafuta ndi zinthu zina zonyowetsa, kukana kuvala kwake kumawonekera kwambiri, mpaka kangapo mpaka kangapo kuposa zipangizo wamba.
2. PU castor ili ndi kukana bwino kwa thupi ndi mankhwala. Mafuta a polyurethane castor ali ndi ubwino wokana mafuta, kukana ozoni, kukana ukalamba, kukana kuwala kwa dzuwa komanso kukana kutentha kochepa.
3. Mphamvu ya PU Universal Wheel yomwe ili ndi mawonekedwe omwewo ndi yofanana ndi ya tayala la rabara nthawi 6-7.
4. 5. Chogwirira cha mpira umodzi chili ndi phokoso lochepa komanso nthawi yayitali yogwira ntchito. Ubwino wake ndi wakuti phokoso silidzawonjezeka mukagwiritsa ntchito kwa nthawi yayitali, ndipo mafuta safunika.
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| Chipinda cha mawilo | Katundu | Chozungulira | Mbale/Nyumba | Zonse | Kukula kwakunja kwa mbale yapamwamba | Kutalikirana kwa Mabowo a Bolt | M'mimba mwake wa Bolt Hole | Kutsegula | Nambala ya Zamalonda |
| 63*32 | 80 | 33 | 2.5|2.5 | 93 | 95*60 | 75*45 | 8.5*12 | 42 | A2-063T4-211 |
| 75*32 | 90 | 33 | 2.5|2.5 | 105 | 95*65 | 75*45 | 8.5*12 | 42 | A2-075T4-211 |
| 100*32 | 120 | 33 | 2.5|2.5 | 130 | 95*65 | 75*45 | 8.5*12 | 42 | A2-100T4-211 |
| 125*32 | 140 | 33 | 2.5|2.5 | 157 | 95*65 | 75*45 | 8.5*12 | 42 | A2-125T4-211 |