NSK deep groove ball bearings

NSK single-row deep groove ball bearings are the most common type of rolling bearings. Their use is very widespread. So, our stock has more than 360 kinds of NSK deep groove ball bearing number,including open,zz,ddu,vv. In addition to open type bearings, NSK deep groove ball bearings often have steel shields or rubber seals installed on one or both sides and are prelubricated with grease. Also, snap rings are sometimes used on the periphery. As to cages, pressed steel ones are the most common. For NSK big deep groove ball bearings, machined brass cages are used. Machined cages are also used for high speed applications.

The proper amount of good quality grease is packed in shielded and sealed ball bearings. A comparison of the features of each deep groove ball bearings in shown below.

Type Shielded type
(ZZ type)
Non-contact Rubber Sealed Type
(VV type)
Contact Rubber Sealed Type
(DDU type)
Torque Low Low Higher than ZZ, VV types due to contact seal
Speed capability Good Good Limited by contact seals
Grease sealing effectiveness Good Better than ZZ type A little better than VV type
Dust resistance Good Better than ZZ type (usable in moderately dusty environment) Best (usable even in very dusty environment)
Water resistance Not suitable Not suitable Good (usable even if fluid is splashed on bearing)
Operating temperature -10 -- +110°C -10 -- +110°C -10 -- +110°C

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Related numbers

NSK 6022ZZ bearing
110mm x 170mm x 28mm
NSK 6210ZZ bearing
50mm x 90mm x 20mm
NSK 6211ZZ bearing
55mm x 100mm x 21mm
NSK 6212ZZ bearing
60mm x 110mm x 22mm
NSK 6305ZZ bearing
25mm x 62mm x 17mm
NSK 6308ZZ bearing
40mm x 90mm x 23mm
NSK 6310ZZ bearing
50mm x 110mm x 27mm
NSK 6311ZZC3 bearing
55mm x 120mm x 29mm

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