our company produce high quality deep groove ball bearing. Their structure are simple and convenient to use. The bearings are priority to carry radial loads, and also capable of carrying combination loads in radial and axial directions.This type of bearings have lower friction coefficient,higher limiting speed.But they are not suitable for carrying shock and heavy loads.our deep grooce ball bearings are as following: d>80mm so if you have any requirements, pls feel free to contact us. best regards Sara Cui Sales Manager Luoyang Xinshi Bearing Manufactuing Co., Ltd. Add:No.1,Taiyuan Road,Luoyang city,Henan,China Tel:+86-379-6491-0889 Fax:+86-379-6292-6526 Mobile:+86-150-36748910 Msn:cuichangfan@live.cn E-mail:sara_cui@yahoo.com lyxszc@163.com Skype:saracui1 Website:www.lyxszc.com