Xuzhou helin , expert slewing bearing manufacturer in china 1---- we can produce the standard model, please go to our website to download catalogue or send me email 2----- we can produce the non standard model, please send us drawings or tell us the model of the brand, such as rollix skf i na and so on, also we can design model for you by the data you offered. 3---- we can also provide construction machinery parts, such as excavators, cranes and so on, the brand can be below: Hyundai komatsu kobelco sumitomo kato daewoo 4--------material :50 mn 42crmo(4v) 5---------delivery time:stock or 5-15 days 6--------loading port:shanghai or qingdao 7------ Package :small diameter with plywood box , large diameter with iran rack 8-------warranty time:one year after leaving factory time.