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Description:

• NTN 51306 – Single Direction Thrust Ball Bearing

  General Information

  • Brand: NTN
  • Item Number: 51306
  • EAN: 4547359307047
  • Category: Single direction thrust ball bearing
  • Country of Origin: Japan

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  Dimensions & Weight

  • Bore Diameter (d): 30 mm / 1.1811 in
  • Outer Diameter (D): 60 mm / 2.3622 in
  • Total Height (B): 21 mm / 0.8268 in
  • Weight: 0.27 kg

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  Bearing Properties

  • Type: Thrust ball bearing, single direction (axial deep groove ball bearing)
  • Cage Type: S – Steel / standard cage
  • Design: Open bearing
  • Precision: Standard precision

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  Product Description

  The NTN 51306 is a single direction thrust ball bearing, also known as an axial deep groove ball bearing. It is designed to support axial loads in one direction only and must not be subjected to radial loads.

  The bearing consists of:

  • A shaft (inner) ring
  • A housing (outer) ring
  • A ball and cage assembly

  Key characteristics:

  • The shaft ring is mounted on the shaft and rotates with it.
  • The housing ring has a slightly larger bore, allowing the shaft to pass through with clearance.
  • The open design with balls makes it suitable for high rotational speeds under axial load.
  • The components are separable, so the rings and ball/cage assembly can be mounted separately for easier installation.

  The housing ring of the 51306 NTN has a flat seat, which means:

  • It cannot compensate for misalignment between shaft and housing.
  • Proper alignment of the bearing arrangement is important for long service life.

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  Typical Applications

  • Vertical shafts and axial load applications
  • Gearboxes and speed reducers (axial support)
  • Machine tool spindles (axial locating bearing)
  • General industrial machinery with pure axial loads in one direction

   

     

   

Package Includes: ONE (1) NTN Bearing 51306