We are the manufacturer of slewing bearings, we can produce:Four-Point Contact Ball Slewing Bearing, Cross Roller Slewing BearingDouble-Row Ball Slewing BearingBall and Roller Combination Slewing BearingThree-Row Roller Slewing BearingWe can produce these kinds of slewing bearings with customer offered drawings for us, from diameter 100mm to 7800mm. We also can produce slewing bearings for excavators, such as KOMATSU,HITACHI,KOBELCO,CATERPILLAR,KATO,SUMITOMO,DOOSAN,HYUNDAI,VOLVO,JCB,CASE,LIEBHERR,LiuGong,Sany,etc.Mostly we will have 2-10 pieces each in stock. We can delivery the goods immediately on receipt of payment.If any questions or need any more information,please let me know.Look forward to cooperate with you.Address:Bearing Zone, Yiyang Industry Cluster District, Luoyang City, ChinaPhone:(86) 15893746073