The KOYO 6220-2Z is a precision single-row deep groove ball bearing equipped with dual non-contact metal shields designed to prevent particulate contamination while sustaining optimal high-speed performance. Engineered by JTEKT (Koyo), this component is built for heavy-duty industrial applications that demand reliable radial load capacity alongside moderate bidirectional axial load handling.
Technical Specifications:
Bore Diameter (d): 100 mm
Outer Diameter ($D$): 180 mm
Width ($B$): 34 mm
Dynamic Load Rating ($C_r$): 153 kN
Static Load Rating ($C_{0r}$): 93.1 kN
Fatigue Load Limit ($C_u$): 5.15 kN
Reference Mass: 3.14 kg
Closure Type: Double Metal Shields (-2Z)
Design and Operational Characteristics:-
The optimized deep groove geometry offers low frictional torque, making it highly efficient under high rotational velocities. The steel shields (-2Z) block dust, dirt, and ambient debris from entering the raceway without introducing the high sliding friction characteristic of rubber contact seals. This configuration preserves the factory-lubricated grease layer, ensuring long service intervals and reduced maintenance overhead.
Typical Industrial Applications:
Electric motors and heavy-duty generators
Industrial gearboxes and speed reducers
Centrifugal pumps, compressors, and industrial blowers
Agricultural machinery and processing equipment
Automotive drive components and transmission systems
Successful integration requires precise mounting tolerances, matching a minimum shaft shoulder diameter of 111 mm and a maximum housing shoulder diameter of 169 mm with a 2 mm max fillet radius to avoid assembly stress concentration and premature fatigue.
Technical Specifications:
Bore Diameter (d): 100 mm
Outer Diameter ($D$): 180 mm
Width ($B$): 34 mm
Dynamic Load Rating ($C_r$): 153 kN
Static Load Rating ($C_{0r}$): 93.1 kN
Fatigue Load Limit ($C_u$): 5.15 kN
Reference Mass: 3.14 kg
Closure Type: Double Metal Shields (-2Z)
Design and Operational Characteristics:-
The optimized deep groove geometry offers low frictional torque, making it highly efficient under high rotational velocities. The steel shields (-2Z) block dust, dirt, and ambient debris from entering the raceway without introducing the high sliding friction characteristic of rubber contact seals. This configuration preserves the factory-lubricated grease layer, ensuring long service intervals and reduced maintenance overhead.
Typical Industrial Applications:
Electric motors and heavy-duty generators
Industrial gearboxes and speed reducers
Centrifugal pumps, compressors, and industrial blowers
Agricultural machinery and processing equipment
Automotive drive components and transmission systems
Successful integration requires precise mounting tolerances, matching a minimum shaft shoulder diameter of 111 mm and a maximum housing shoulder diameter of 169 mm with a 2 mm max fillet radius to avoid assembly stress concentration and premature fatigue.
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