Kei te Tāone o Zhongshan, Porowini o Guangdong, te kamupene Zhongshan Rizda Castor Manufacturing Co., Ltd., tētahi o ngā tāone matua o te Pearl River Delta, e kapi ana i te rohe neke atu i te 10000 mita tapawha. He kamupene hanga wira me ngā wira hurihuri ngaio hei whakarato i te whānuitanga o ngā rahi, ngā momo me ngā momo hua ki ngā kiritaki mō ngā momo tono. Ko te kamupene o mua ko BiaoShun Hardware Factory, i whakatūria i te tau 2008, ā, he 15 tau te roa o te wheako ki te hanga me te hanga ngaio.
He pai te ātete o ngā wira rapa ki te waikura me te waikura, ā, ka taea te ātete i ngā āhuatanga waikura i roto i te taiao ahumahi. He ngohengohe ngā wira, ā, ka taea te whakaiti i te haruru i te whakamahinga. Ka whakamahia e te peera pōro kotahi te momo whakaranu o te waku reti me te waku hurihuri, ā, ka pania te rotor me te stator ki ngā pōro me te hinu whakahinuhinu. Ka whakakorea e ia ngā raruraru o te poto o te ora mahi me te mahi kore pumau o te peera hinu.
1. He ātete kume tino pai, he kaha kume teitei hoki.
2. He ātete roa ki te pāmahana neke atu i te 70 ℃, ā, he pai te mahi i roto i te taiao pāmahana iti. Ka taea tonu te pupuri i te piko pai i te -60 ℃.
3. He pai te ārai hiko, te ātete ki te paheke, te ātete ki te kakahu, te ātete ki te huarere me ngā matū whānui.
4. Ka taea e te kakano ngohengohe te whakaiti i te haruru i te whakamahinga.
5. Ngā āhuatanga miihini hihiri pai.
6. He iti te haruru o te peera pōro kotahi, ā, he roa te ora mahi. Ko te painga, kāore e nui ake te haruru i muri i te whakamahinga roa, ā, kāore e hiahiatia he hinu whakahinuhinu.
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| Te Diameter o te Wira | Utaina | Toki | Āwhata | Utaina | Rahi o te pereti o runga | Te Mokowā o te Pūwero | Te Diameter o te Pūwero | Te whakatuwheratanga | Tau Hua |
| 100*36 | 120 | 38 | 2.5|2.5 | 128 | 105*80 | 80*60 | 11*9 | 42 | R1-100S4-551 |
| 125*38 | 150 | 38 | 2.5|2.5 | 155 | 105*80 | 80*60 | 11*9 | 52 | R1-125S4-551 |