Bearings
Needle Roller Bearings
Combined Bearings
NKIB / NATB Series (Angular - Double Direction)
Quick Code: BB-126521
NATB5903 IKO Needle Roller/Angular Contact Bearing
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NKX / NAX Series (Thrust Ball)
NKIA / NATA Series (Angular - Single Direction)
ZARN Series (Axial Cylindrical Roller)
ZARF Series (Axial Cylindrical Roller)
NKXR / NBX Series (Cylindrical Roller)
Simplex Connecting Links
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Product Specification
Brand
IKO
C
18mm
Inside Dia (d)
17mm
Interchangeable With:
NKIB5903
Outside Dia (D)
30mm
Width (B)
20mm
Quick Order Code
BB-126521
Product Description
The NATB5903 IKO Needle Roller/Angular Contact Bearing is a precision-engineered combined bearing designed for demanding industrial applications requiring versatile load handling and compact design.
Key Technical Specifications
- Bore Diameter: 17mm
- Outside Diameter: 30mm
- Width: 20mm
- Operating Temperature Range: -20°C to +120°C
- Compatible Interchange: NKIB5903
Product Features
- Double directional axial component with needle/ball race design
- Dual lubrication options: compatible with grease and oil
- Outer ring features dedicated lubrication groove and hole
- Unique construction with one narrow and one wide inner ring
- Plastic ball cage for enhanced performance
- Shoulder design at inner ring junction for precise ball and cage guidance
Recommended Applications
- Machine tool spindles
- Automotive transmission systems
- Precision rotating equipment
- Industrial machinery requiring bidirectional axial load support
- High-speed rotational mechanisms
The innovative design allows for supporting alternating axial forces, making it ideal for complex mechanical environments demanding reliability and precision.
