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Thrust Ball Bearing 51120

Thrust Ball Bearing 51120

    Payment Type: L/C,T/T
    Terms of Trade: FOB,CIF,FCA
    Delivery Time: 70 Days
    Packaging: Standard Export Package
    Brand: NXZ
    Transportation: Ocean,Land,Air
    Place of Origin: China
    Certificate: ISO9001,ISO140001,TS16949
    HS Code: 8482104000
    Port: Yinchuan,Tianjin,Shanghai

Basic Info

Model No.: 51120

Product Description

    Thrust Ball Bearing

 

Thrustball bearings are separable and their limit rotational speed is low.

Structures:

1.51000type single-direction thrust ball bearings, this type of bearing can onlyaccommodate axial load on one direction and can control the axial movement onone direction of the shaft and housing.

2.52000type double-direction thrust ball bearings, this type of bearings canaccommodate axial load on double direction and can control the axial movementon double direction of shaft and housing.

3.560000 type thrust angular-contact ball bearing, as this structure can carryaxial load and radial simultaneously.

Cage materials

Whenthe outside diameter is equal or lesser than250mm, thrust ball bearings generally adopt pressedsteel sheet cages, when the outside diameter is more than250mm,it will adopt solid cages.

Minimum axial load

Whenthe thrust ball bearing is operating, if the applied axial load is too small,the axial direction is not tightly pressed, then acted by centrifugal force,the steel ball will slip and displace and destroy the normal operation of thebearings. To avoid the occurrence of such case, an axial load, Famin must beapplied when the thrust ball bearings is working. The calculating formula is:

Inthe equation, Famin      Minimum axialload  (kN)

                 A       Minimum load constant

                 N       Revolution            (r/min)

Minimumload constant A is showing in the bearings dimension table. If the appliedaxial load is small, a spring must be used to preload the bearing.

Permissible tilt angle

Thedouble supporting surface of thrust ball bearings should be parallel. The axiscenter line should be square with shell supporting surface, if this is notassured, it can compensate by adopting spherical housing washer andself-aligning washer. 

Tolerance

Thetolerance value of thrust ball bearings is showing in the section [thetolerance of rolling bearing".

Dynamic equivalent axial load

Whenα=90°,thrustball bearings can only carry axial load and its dynamic equivalent axial loadis: Pa=Fa

Whenα≠90,  acted by constant and invariable radial andaxial loads, the dynamic equivalent axial load is: Pa=XFr+YFa

SeeAnnex Table 1 for the coefficients of X and Y.

Static equivalent axial load

Whenα=90°,the static equivalent axial load is: P0a=Fa;

Whenα≠90°,the static equivalent axial load is: P0a=2.3Frtanα+Fa.

Where:For double-direction bearings, this equation is applicable to the status whenthe ration of radial load and axial load is an arbitrary value; forsingle-direction bearings, when Fr/Fa≤0.44ctgα, theequation is reliable; when, the Fr/Fa>0.67ctgα,the equation can still give satisfactory P0avalue, but not very conservative.

 

Table 1    Valueof X and Y

α1)

Single-direction Bearings2)

Double-direction Bearings

e


X

Y

X

Y

X

Y

45º 3)

50º

55º

60º

65º

70º

75º

80º

85º

0.66

0.73

0.81

0.92

1.06

1.28

1.66

2.43

4.8

1

1.18

1.37

1.6

1.9

2.3

2.9

3.89

5.86

11.75

0.59

0.57

0.56

0.55

0.54

0.53

0.52

0.52

0.51

0.66

0.73

0.81

0.92

1.06

1.28

1.66

2.43

4.8

1

1.25

1.49

1.79

2.17

2.68

3.43

4.67

7.09

14.29

α≠90º

1.25tanα×

(1-sinα)

 

tanα×

(1-sinα)

tanα×

(1-sinα)

1.25tanα×

(1-sinα)

 

1.25tanα

Notes: 1)For α`s medium value, use linear interpolation to calculate the values of X, Yand e.

      2) Fa/ Fr≤e is notapplicable to single-direction bearings.

      3) For thrust bearings withα>45°, use interpolation method to calculate thevalue of whenα=45°.

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 Xibei Bearing Co., Ltd. is located in the Yinchuan city, the capital of Ningxia province. Its predecessor, the Xibei Factory was founded in the depths of Helan Mountain in 1965. From 1982, it moved to Yinchuan city, and builds a modern factory in the Yinchuan city. It makes a positive contribution to the revitalization of bearing industry in China.Xibei Bearing Co., Ltd. is one of the biggest bearing manufactories in the west of China, one of the leading companies in bearing industry. It has certificate for the Exemption for the Export Inspection and its NXZ trademark is the Chinese well-know mark.Located In the northwest of China, Xibei Bearing Co., Ltd. orientate to equip China and service to the world. During the course of development, Xibei Bearing Co., Ltd. continuously accumulates experience, pioneering and innovative, forge ahead with determination. In accordance with the international standard and customer`s special requirement, Xibei Bearing can produce more than 6000 varieties of bearing standard and non-standard with outside diameter from 40mm to 3500mm. NXZ bearing is widely used in rail transit, military industry, precision motor, petroleum machinery, metallurgy machinery, heavy truck, construction machinery, mining machinery, cement machinery and hydraulic engineering, etc., and well sold all over China and export to over 50 countries and regions, such as Europe, America, Asia, Africa, etc. Xibei Bearing Co., Ltd. has National Enterprise Technical Center, postdoctoral scientific research workstation, and union engineering laboratory by local with state for large special bearing. There are abundant technical strength, first-class new product research & development, technology innovation ability, perfect technical innovation and product development system. It`s research and develops more than 200 kinds of new products per year on average. Research and development of oil drilling bearing 30228/630Q won the national quality gold medal. NXZ research & development and manufacturing process is leading level large special bearing. Products are successfully applied to the shenzhou V, Shenzhou VI launch monitoring device. Company has more than 500 kinds of products have filled the country blank space; nearly 1000 kinds of products reached the international advanced level.Xibei Bearing Co., Ltd. has all kinds of professional and technical personnel more than 300, including over 90 senior professional and technical personnel, with eight enjoy state council allowance, four enjoy the Ningxia autonomous region government subsidies, one is in the state [Bai qian wan project", and two are postdoctoral. Xibei Bearing promises the concept of [Customer First, Quality first" has successively passed the ISO9001 quality management system, ISO14001 environment manage system, ISO10012 metering management system, GJB9001B military quality system, ISO/TS16949 automotive quality system certification, and is national first-class metrology unit.Xibei Bearing Co., Ltd. possesses all kinds of equipment and test equipment of 2500 sets, in which, 425 sets are [large, precise and high-tech" equipment. It can supply the informatization and intelligentized process equipment to customer with higher quality product in bearing industry.Xibei Bearing Co., Ltd. makes the best of existing well-know mark, the advantage of the technology, resources and market, according to the [Made in China 2025" Strategy, promoteing high technology content, high value-added, high precision, high reliability bearing product. In Yinchuan state-level economic and technological development zone plans and constructs the first-level high-end bearing industrial base with digital, intelligent, informatization, greenization as the target. Xibei Bearing will be built into the biggest high-end bearing base in the West of China for research and develop, test and intelligent high-end base, the domestic first-level export high-end export base, fulfilled industry transformation and updating fulfill the capacity of annual output high-end equipment bearing for rail transit, military machinery, precision machinery, wind power, petroleum machinery, metallurgy machinery, mining machinery and heavy truck.

Company Info

  • Company Name: Xibei Bearing Co.,Ltd.
  • Representative: Mr Zhao
  • Product/Service: Bearing , Railway Bearing , Petroleum Bearing , Metallurgy Rolling Mill Bearing , Heavy Truck Bearing , Construction Machinery Bearing
  • Capital (Million US $): 372,440,000RMB
  • Year Established: 1965
  • Total Annual Sales Volume (Million US $): US$50 Million - US$100 Million
  • Export Percentage: 1% - 10%
  • Total Annual Purchase Volume (Million US $): Below US$1 Million
  • No. of Production Lines: Above 20
  • No. of R&D Staff: Above 100 People
  • No. of QC Staff: Above 100 People
  • OEM Services Provided: yes
  • Factory Size (Sq.meters): Above 100,000 square meters
  • Factory Location: No.630,Beijing West Road, Yinchuan, Ningxia 750021, China
  • Contact Person: Ms. Jane Li
  • Tel: 86-951-2020454
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