NTN 51306 Ball Thrust Bearing - Single-Direction, 30 mm

Description


NTN 51306 Ball Thrust Bearing - Single-Direction, 30 mm

Ball Thrust Bearing - Single-Direction, 30 mm Bore, 60 mm OD, 21 mm Width, Separable

SPECIFICATIONS

Bore Type Round
Thrust Bearing Type Single-Direction
Bore Diameter 1.1811 in, 30.000 mm
Outside Diameter 60.000 mm, 2.3622 in
Overall Width 0.8268 in, 21.000 mm
Country of Origin JP
Outside Diameter Design Straight
Closure Type Open
Separable or Banded Separable
Configuration One
Internal Clearance CN
Precision Rating ISO Class 0
Static Load Capacity 17600 lbf
Seal Material None
Dynamic Load Capacity 9650 lbf
Seal Type None
Operating Temperature Range -40 to 250 ºF
Maximum RPM 3900 rpm
Bearing Material High Carbon Chrome Steel
Cage Material Resin
Cage Type Molded
Fillet Radius 1.000 mm, 0.0394 in
Series 513
Manufacturer UPC Number 4547359307047
Harmonization Code 8482.10.5008
Weight 0.571 lb



 


Thrust Bearings

Thrust bearings are designed primarily to support axial loads at contact angles between 30° and 90°. Similar to radial bearings, thrust bearing designs may incorporate balls or rollers as rolling elements.
The configuration and characteristics of each type of bearing are given below.
With thrust bearings, it is necessary to supply an axial preload in order to prevent slipping between the bearing’s rolling elements and raceways.
For more detailed information, please refer to section “8.3 Bearing preload.”

 

 

 

1.  Single direction thrust ball bearings

As shown in Fig. 1, the steel balls of single direction thrust ball bearings are arranged between a pair of a pair of washers (shaft washer and housing washer), and the normal contact angle is 90°. Axial loads can be supported in only one direction, and radial loads cannot be accommodated. These bearings are not suitable for high speed operation.
Table 1 lists the standard cage types for single direction thrust ball bearings

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.  Thrust spherical roller bearings

Just like spherical roller bearings, the center of the spherical surface for thrust spherical roller bearings is the point where the raceway surface of the housing raceway washer meets the center axis of the bearing. Since thrust spherical roller bearings incorporate barrel-shaped rollers as rolling elements, they also have self-aligning properties. (See Fig. 2) Under normal load conditions, the allowable misalignment is 1/60 to 1/30, although this will vary depending upon the bearing’s dimension series.
These bearings use machined copper
alloy cages and a guide sleeve for the cage is attached to the inner ring. These bearings have a high axial load capacity, and can accommodate some radial load when the ring is axially loaded. It is necessary to operate these bearings where the load condition meets Fr / Fa ≦ 0.55.
The design for spherical thrust bearings is such that lubricant cannot enter the gap between the cage and the guide sleeve. Therefore, oil lubrication should be used, even in low speed operation.

 

 

 

 

 

 

 

 

3. Thrust cylindrical roller bearings

Thrust bearings incorporating cylindrical rollers are available in single row, double row, triple row, and four row varieties. (See Fig. 3) NTN Engineering offers the 811, 812 and 893 series that conform to dimension series 11, 12 and 93 prescribed in JIS, as well as other special dimensions.
While thrust cylindrical roller bearings are only able to receive axial loads, the axial loads can be heavy due to the high axial rigidity of the bearing. For series 811, 812, and 893, the dimension tables are listed section “E. Needle roller bearings.” Bearings with dimensions not listed in the dimension tables are also manufactured. Contact NTN Engineering for more information.

 

 

 

 

 

4.  Thrust tapered roller bearings

Although not listed in the dimension tables, tapered roller bearings like those in Fig. 4 are also manufactured. Contact NTN Engineering for more detailed information.

 

 

Product form

NTN 51306 Ball Thrust Bearing - Single-Direction, 30 mm Ball Thrust Bearing - Single-Direction, 30 mm Bore, 60 mm OD,... Read more

SKU: 51306

$10.79 Excl. VAT

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    Description


    NTN 51306 Ball Thrust Bearing - Single-Direction, 30 mm

    Ball Thrust Bearing - Single-Direction, 30 mm Bore, 60 mm OD, 21 mm Width, Separable

    SPECIFICATIONS

    Bore Type Round
    Thrust Bearing Type Single-Direction
    Bore Diameter 1.1811 in, 30.000 mm
    Outside Diameter 60.000 mm, 2.3622 in
    Overall Width 0.8268 in, 21.000 mm
    Country of Origin JP
    Outside Diameter Design Straight
    Closure Type Open
    Separable or Banded Separable
    Configuration One
    Internal Clearance CN
    Precision Rating ISO Class 0
    Static Load Capacity 17600 lbf
    Seal Material None
    Dynamic Load Capacity 9650 lbf
    Seal Type None
    Operating Temperature Range -40 to 250 ºF
    Maximum RPM 3900 rpm
    Bearing Material High Carbon Chrome Steel
    Cage Material Resin
    Cage Type Molded
    Fillet Radius 1.000 mm, 0.0394 in
    Series 513
    Manufacturer UPC Number 4547359307047
    Harmonization Code 8482.10.5008
    Weight 0.571 lb



     


    Thrust Bearings

    Thrust bearings are designed primarily to support axial loads at contact angles between 30° and 90°. Similar to radial bearings, thrust bearing designs may incorporate balls or rollers as rolling elements.
    The configuration and characteristics of each type of bearing are given below.
    With thrust bearings, it is necessary to supply an axial preload in order to prevent slipping between the bearing’s rolling elements and raceways.
    For more detailed information, please refer to section “8.3 Bearing preload.”

     

     

     

    1.  Single direction thrust ball bearings

    As shown in Fig. 1, the steel balls of single direction thrust ball bearings are arranged between a pair of a pair of washers (shaft washer and housing washer), and the normal contact angle is 90°. Axial loads can be supported in only one direction, and radial loads cannot be accommodated. These bearings are not suitable for high speed operation.
    Table 1 lists the standard cage types for single direction thrust ball bearings

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    2.  Thrust spherical roller bearings

    Just like spherical roller bearings, the center of the spherical surface for thrust spherical roller bearings is the point where the raceway surface of the housing raceway washer meets the center axis of the bearing. Since thrust spherical roller bearings incorporate barrel-shaped rollers as rolling elements, they also have self-aligning properties. (See Fig. 2) Under normal load conditions, the allowable misalignment is 1/60 to 1/30, although this will vary depending upon the bearing’s dimension series.
    These bearings use machined copper
    alloy cages and a guide sleeve for the cage is attached to the inner ring. These bearings have a high axial load capacity, and can accommodate some radial load when the ring is axially loaded. It is necessary to operate these bearings where the load condition meets Fr / Fa ≦ 0.55.
    The design for spherical thrust bearings is such that lubricant cannot enter the gap between the cage and the guide sleeve. Therefore, oil lubrication should be used, even in low speed operation.

     

     

     

     

     

     

     

     

    3. Thrust cylindrical roller bearings

    Thrust bearings incorporating cylindrical rollers are available in single row, double row, triple row, and four row varieties. (See Fig. 3) NTN Engineering offers the 811, 812 and 893 series that conform to dimension series 11, 12 and 93 prescribed in JIS, as well as other special dimensions.
    While thrust cylindrical roller bearings are only able to receive axial loads, the axial loads can be heavy due to the high axial rigidity of the bearing. For series 811, 812, and 893, the dimension tables are listed section “E. Needle roller bearings.” Bearings with dimensions not listed in the dimension tables are also manufactured. Contact NTN Engineering for more information.

     

     

     

     

     

    4.  Thrust tapered roller bearings

    Although not listed in the dimension tables, tapered roller bearings like those in Fig. 4 are also manufactured. Contact NTN Engineering for more detailed information.

     

     

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