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638 638ZZ/2RS Miniature Deep Groove Ball Bearings
Min. Order:
1 Piece
Payment term:
TT,LC,DP
Delivery time:
7 days
Technical Parameters:
Product Designations:
638
Structure:
single row
Inside Diameter:
8 mm
Outside Diameter:
28 mm
Thickness:
9 mm
Brand:
SAY
Precision Rating:
ABEC-1,ABEC-3
Bearing Material:
chrome steel,carbon steel
Seals Type:
open,zz,2rs
638 Deep Groove Ball Bearing
Model: 638
Old Model: 38
Inside diameter (ID d): 8 mm
Outside diameter (OD D): 28 mm
Thickness (B): 9 mm
Deep groove ball bearings:
1 TYPE Seals of deep groove ball bearings: 16000 ZZ,RS,2RS,RZ Series 16001--16017
604—609 ZZ,RS,2RS,RZ 624--629
6000 ZZ,RS,2RS,RZ Series 6000--6060
6200 ZZ,RS,2RS,RZ,Series 6200--6228--6252
62200ZZ,RS,2RS,RZSeries 62200--62216
6400 ZZ,RS,2RS,RZ Series 6403--6413
6800 ZZ,RS,2RS,RZ Series 6800--6822--6872
6900 ZZ,RS,2RS,RZ Series 6900--6922--6956
Use characteristics: double seals of deep groove ball bearings: this bearings with double seals, can more closely to prevent dirt and grease overflow exploits. The seals and the contact between the inner ring, can be divided into contact and contactless. This bearings in the factory, mounted just the right amount of lubricant, pre-installation without cleaning, lubrication period allowed, without adding lubricants.
Side seals of deep groove ball bearings: with dense this bearings with seals, prevents dirt from the side of the invasion, seals and there is no space between the inner ring, to contact seal, seal between the inner rings have a clearance is a non-contact seal, and shielded bearings, seals, but friction is large, low speed limits apply to seal a certain requirements.
Another Type: 88506---88512
2 Bearing Accuracy: ABEC1,ABEC3
3 Bearing Material: Chrome steel(Gcr 15) Carbon steel
4Bearing Vibration: Z1,Z2,Z3
5Bearing Noise:V1,V2,V3
NOTES: Packaging : Wooden Packing or Pallet packing or according to the customer's requirements
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