Detailed description
1. 61801 high quality deep groove ball bearings
2 size :12*21*5mm
3.shield/closure:open ball bearing,Z,ZZ,RS,2RS,2RZ
4.tolerance cold:ABEC-1,ABEC-3,ABEC-5,ABEC-7
5.vibration level:V4,V3,V2,V1
6.material: bearing steel ,GCr15,carbon steel
7.retainer :PTEE,nylon,or (stainless) steel
8.application :speed changing box,instrument,electrical machine,home appliance,agriculture machine,ect.








