The most typical type of radial ball bearings can support axial loads in both directions in addition to radial loads. Some types have a flange or retaining ring on the outer ring to facilitate axial positioning when mounting the housing.
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NMB Parts No. DDR-2ZZ Metric or Inch Inch ISO/JIS - Material of Rings Stainless Steel Ring Type [Radial] basic type Inner Diameter(d)
[mm]3.175 Inner Diameter(d)Tolerance
[mm]Compliant with JIS standards Outer Diameter(D)
[mm]9.525 Outer Diameter(D)Tolerance
[mm]Compliant with JIS standards Width(B)
[mm]3.967 Width(B)Tolerance
[mm]Compliant with JIS standards Chamfer(rs min)
[mm]0.300 Reference Diameter Outer(Lo)
[mm]8.190 Reference Diameter Inner(Li)
[mm]5.080 Ball Size(DW)
[mm]1.5875 Ball Complement(Z) 7 Dynamic Load Rating(Cr)
[N]641 Static Load Rating(Cor)
[N]226 Inner Diameter(d)
[in]0.1250 Outer Diameter(D)
[in]0.3750
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Technical Data
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Engineering Information
Technical Data
- Bearing Types
- Names and Symbols
- Part Numbering System
- Selecting Process
- Application Structure, Required Performance, Environment
- Material
- Shield and Seal
- Retainer
- Load rating and rating life
- Tolerance and precision grade
- Measurement methods
- Internal Clearance
- Fits
- Designs of shaft and housing
- Preload
- Displacement
- Torque
- Vibration by forced rotation
- Noise
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