6311DDUCM is a basic design NSK single row deep groove ball bearing, sealed type, which suffix CM: indicates electric motor clearance, and suffix DDU is unique of NSK bearings, to be precise, the suffix is for NSK deep groove ball bearings. As everyone know that there are several designs of NSK deep groove ball bearings, for example the part number 6311,for open design is 6311, for steel seals on one side is 6311-Z, on both sides is 6311-ZZ, and for rubber seals on both sides is 6311-DDU,the last 6311-VV, is with shield on both sides.

More details can be learned from 6311DDUCM technical data below:
 

d: 55mm
D: 120mm
B: 29mm
M: 1.37kg
Basic dynamic load rating: 44.5KN
Basic static load rating: 71.5KN
Oil Rotate speed: 6700 r/min
Grease Rotate speed: 4000 r/min

Other  NSK deep groove ball bearings  part no similar as 6311DDUCM are available ex-stock  as below:

6018DDU      6218DDU       6318DDU

6019DDU      6219DDU       6319DDU

6020DDU      6220DDU       6320DDU

6021DDU      6221DDU       6321DDU

6022DDU      6222DDU       6322DDU

6001ZZCM     6201ZZCM     6301ZZCM

6002ZZCM     6202ZZCM     6302ZZCM

6003ZZCM     6203ZZCM     6303ZZCM

6004ZZCM     6204ZZCM     6304ZZCM

6005ZZCM     6205ZZCM     6305ZZCM

6006ZZCM     6206ZZCM     6306ZZCM

6007ZZCM     6207ZZCM     6307ZZCM

6008ZZCM     6208ZZCM     6308ZZCM

6009ZZCM     6209ZZCM     6309ZZCM

6010ZZCM     6210ZZCM     6310ZZCM

6011ZZCM     6211ZZCM     6311ZZCM

6012ZZCM     6212ZZCM     6312ZZCM

6013ZZCM     6213ZZCM     6313ZZCM

6014ZZCM     6214ZZCM     6314ZZCM

6015ZZCM     6215ZZCM     6315ZZCM

6016ZZCM     6216ZZCM     6316ZZCM

Exception DDU design for NSK deep groove ball bearings, the VV design is also very popular with clients worldwide. If you wanna choose a suitable NSK bearings for your machines, Yakang Bearing Suppliers is your best choice.