• Model NO.：719
• Outer Diameter：90mm
• Load Rating：P4,P2,P5
• Inner Diameter：55mm
• Breadth：18mm
• Loading Rating：Cr:19.9kn Cor:12.9kn
• Limiting Speed：Grease:19000r,Min Oil:32000r,Min
• Weight：Abou0.41kg
• Rolling Body：Ball Bearings
• Number of Rows：Single
• Outer Dimension：Small and Medium-Sized (60-115mm)
• Transport Package：Standard Package for Angular Contact Ball Bearings
• Specification：dimension for angular contact ball bearings
• Trademark：ZYS
• Origin：Luoyang, Henan, China
• Production Capacity：1000000 PCS,Year

ZYS angular contact ball bearing seriesStructuresDimension seriesBore size rangePerformanceHigh precision angular
contact ball bearing 718 C
718 AC 
719 C
719 AC 
70 C
70 AC 
72 C 72 AC718:10~360mm 
719:8~460mm 
70: 8~380mm 72: 8~220mmHigh speed;
Large loading capacity;
Suit for grease 
or oil-mist lubricationHigh speed angular contact ball
bearing(incl. hybrid ball bearing) H719 C
H719 AC 
H70 C
H70 AC 
H719 C/HQ1
H719 AC/HQ 
H70 C/HQ1
H70 AC/HQ1H719:8~220mm 
H70:8~220mm 
H719/HQ1:8~220mm H70/HQ1:8~220mmSuper speed;
High rigidity;
Suit for air-oil or oil injection lubricationSuper speed angular contact ball
bearing(incl. hybrid ball bearing) HS719 C
HS719 AC 
HS70 C
HS70 AC 
HS719 C/HQ1
HS719 AC/HQ 
HS70 C/HQ1 HS70 AC/HQ1HS719:8~220mm 
HS70:8~220mm 
HS719/HQ1:8~220mm 
HS70/HQ1:8~220mmSuper speed
(higher than H series);
High rigidity;
Suit for air-oil or oil injection lubricationSuper speed angular contact ball bearing with
direct lubrication(incl. hybrid ball bearing) H719 C-DL
H719 AC-DL 
H70 C-DL
H70 AC-DL 
H719 C/HQ1-DL
H719 AC/HQ-DL 
H70 C/HQ1-DL
H70 AC/HQ1-DLH719-DL:20~220mm 
H70-DL:30~220mm 
H719/HQ1-DL:20~220mm 
H70/HQ1-DL:30~220mmSuper speed (higher than H and HS series); 
High rigidity;
Suit for direct lubricationHigh speed sealed angular contact ball
bearing(incl. hybrid ball bearing) B719 C-2RZ 
B719 AC-2RZ 
B70 C-2RZ 
B70 AC-2RZ 
B70 C-2RZ/HQ1
B719 AC-2RZ/HQ1 
B70 C-2RZ/HQ1
B70 AC-2RZ/HQ1B719-2RZ:10~220mm 
B70-2RZ:10~220mm 
B719-2RZ /HQ1:10~220mm 
B70-2RZ /HQ1:10~220mmHigh speed;
High rigidity;
Grease lubricationHigh speed bearings for inner diameter
grinding spindles (incl. hybrid ball bearing) B70 C
B70 C/HQ1B70 C:10~60mm
B70 C /HQ1:10~60mmSuper speed;
High rigidity;
Suit for oil mist lubrication

3. Application of ZYS angular contact ball bearings :
•Machine tool spindle
•high-frequency motor
•Robot technology
•gas turbine
•centrifuge
•small-size automobile front wheels
•differential pinion shaft

4. Advantages of ZYS angular contact ball bearings :
As an important type of  machine tool bearing, ZYS angular contact ball bearing has the following advantages:

The chamfer arc radius of rings is reasonable, which is not only convenient to install, but also guaranteed to improve the installation precision and reduce the risk of the related parts being bumped;

•The speed performance is outstanding
•Unique heat treatment process allows products to achieve the best dimensional stability and rigidity, so as to reduce wear and tear;
•Multiple pre-load levels can help to meet different requirements for speed and system stiffness, which is more reasonable to select and use the levels. 
     ZYS  Advantage     
        ZYS has a strong strength of manufacturing high-precision and high-reliability bearings and relevant parts. ZYS company not only possesses advanced bearing manufacturing equipments and international first-class measuring instruments,but also has strong strength of manufacturing,inspecting and testing the high-precision and high-reliability bearings and relevant spare parts.In the meantime,it always keeps a leading position in bearing basic theory,lubrication technology,design,material,test,information criterion and other aspects.