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.
Pamwamba pa gudumu lofewa la rabara la zitoliro zachitsulo, ma castor a rabara amatha kuteteza nthaka bwino kwambiri. Pamwamba pa gudumu lofewa la rabara limatha kuyamwa mphamvu zomwe zinthu zimagunda zikamayenda. Ndi chete ndipo limagwiritsidwa ntchito kwambiri nthawi zosiyanasiyana. Chogwirira cha singano ndi chogwirira cha roller chokhala ndi ma cylindrical roller. Kutalika kwa chogwirira ndi nthawi 3 ~ 10 za m'mimba mwake, ndipo m'mimba mwake nthawi zambiri siposa 5 mm. Mphamvu ya transmission ndi yayikulu. Chokwanira cha friction ndi 0.001-0.005 yokha;
1. Kukana kwabwino kwambiri kwa kukoka komanso mphamvu yayikulu kwambiri yokoka.
2. Ili ndi mphamvu yabwino yonyamula.
3. Kuteteza magetsi bwino, kukana kutsetsereka, kukana kutha, kukana nyengo komanso mankhwala wamba.
4. Kapangidwe kofewa kangathandize kuchepetsa phokoso lomwe limagwiritsidwa ntchito.
5. Kapangidwe kabwino ka makina osinthasintha.
6. Chogwirira chozungulira chimakhala ndi magwiridwe antchito apamwamba komanso moyo wautali.
7. Popeza chogwirira chozungulira chimakhala ndi mphamvu zambiri zotumizira komanso kutentha kochepa, chimachepetsa kugwiritsa ntchito mafuta opaka, ndipo mafuta opaka ndi kukonza zimakhala zosavuta.
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| Chipinda cha mawilo | Katundu | Chozungulira | Bulaketi | Katundu | Kukula kwa mbale yapamwamba | Kutalikirana kwa Mabowo a Bolt | M'mimba mwake wa Bolt Hole | Kutsegula | Nambala ya Zamalonda |
| 80*30 | 80 | 38 | 2.5|2.5 | 108 | 105*80 | 80*60 | 11*9 | 42 | R1-080S-604 |
| 100*30 | 120 | 38 | 2.5|2.5 | 128 | 105*80 | 80*60 | 11*9 | 42 | R1-100S-604 |
| 125*37.5 | 150 | 38 | 2.5|2.5 | 155 | 105*80 | 80*60 | 11*9 | 52 | R1-125S-604 |
| 160*40 | 200 | 52 | 3.0|3.5 | 190 | 135*110 | 105*80 | 13.5*11 | 62 | R1-160S-604 |
| 200*50 | 230 | 54 | 3.0|3.5 | 235 | 135*110 | 105*80 | 13.5*11 | 62 | R1-200S-604 |