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Angular Contact Ball Bearing 7330AC

  • Angular Contact Ball Bearing 7330AC
  • Angular Contact Ball Bearing 7330AC
  • Angular Contact Ball Bearing 7330AC
  • Angular Contact Ball Bearing 7330AC

Angular Contact Ball Bearing 7330AC

    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: 8482103000
    Port: Yinchuan,Tianjin,Shanghai

Basic Info

Model No.: 7330AC

Product Description


Angular contact ball bearings

Angular contact ball bearings are able to support radial load and axial load. As Angular Contact Ball Bearing 7330AC matched Bearing mounting is often adopted to them as matched parts of bearings, preload for them is more convenient.Angular Contact Ball Bearing 7330AC to individual bearing features and application conditions.

Structures

1. Non-separable angular contact ball bearings

This inner ring and outer ring of this type of bearings cannot be separated and comprises following structures:

Contact angle α=15° counter bore on outer ring,7000Ctype

Contact angle α=25° counter bore on outer ring,7000ACtype

Contact angle α=40° counter bore on outer ring, 7000B type

2. Four-point contact ball bearings

This type of bearings is separable bearings. Whereof, QJ0000 type has two-piece inner ring and QJF0000 type has two-piece outer ring. Their contact angles are same as 35°.When received no load or pure radial load, the steel balls of the ball bearing contact with the four points of the rings. When it is received a pure axial load, the steel balls perform a two-point contact with the ring. In addition, besides the axial load from both directions, this kind of bearing can take torque-load as well.

3. Double row angular contact ball bearings

This kind of bearings can accommodate radial loads as well as axial loads acting in both directions; they can also take loading moment. They can restrain the axial displacement from both directions of the Shaft or housing; the contact angle is 30° (or 40°)

Permissible tilt angle

There is only a little inclination between the inner ring and outer ring of angular contact bearings, the permissible tilt angle varies according to the internal clearance when the bearings are operating, the bearing dimensions, internal design, force and loading moment received by the bearings. The value of the maximum permissible tilt angle should be able to ensure that no much extra stress to be generated inside the bearings.

The tilt angle existing between the inner ring and outer ring will influence the bearing service life. Meanwhile, the running accuracy is decreased down and noise increased.

Tolerance and clearance

The tolerances of general angular contact bearings are class normal P0, class P5 and P6. Class P4 and P2 are applicable to machine tool spindles and bearing amount in pairs.

Clearance of single row angular contact bearing is decided by the contact angle, which is guaranteed by manufacturing.

Axial clearance of Four-point contact ball bearings is listed in table 1.

Cage material

Generally, the cage of angular contact bearing is pressed cage of steel sheet or brass cage, and it is solid brass cage for two row angular contact bearing.

Dynamic equivalent radial load

Single-row angular contact ball bearings with a contact angle of 15°

Single bearing or bearing in pairs(7000 C.7000 C/DT)

Fa/Fr≤e Pr=Fr

Fa/Fr>e Pr=0.44Fr+YFa

Back-to-back and face to face arrangements(7000 C/DB.7000 C/DF)

Fa/Fr≤e Pr=Fr+Y1Fa

Fa/Fr>e Pr=0.72Fr+Y2Fa

Single-row angler contact ball bearings with a contact angle of 25°

Single bearing or bearing in pairs(7000 AC.7000 AC/DT)

Fa/Fr≤0.68 Pr=Fr

Fa/Fr>0.68 Pr=0.41Fr+0.87Fa

Back-to-back and face to face arrangements(7000 AC/DB.7000 AC/DF)

Fa/Fr≤0.68 Pr=Fr+0.92Fa

Fa/Fr>0.68 Pr=0.67Fr+1.41Fa

Single-row angular contact ball bearings with a contact angle of 40°

Single bearing or bearing in pairs (7000 B.7000 B/DT)

Fa/Fr≤1.14 Pr=Fr

Fa/Fr>1.14 Pr=0.35Fr+0.57Fa

Back-to-back and face to face arrangements(7000 B/DB.7000 B/DF)

Fa/Fr≤1.14 Pr=Fr+0.55Fa

Fa/Fr>1.14 Pr=0.57Fr+0.93Fa

Four point contact ball bearings with a contact angle of 35°

Fa/Fr≤0.95 Pr=Fr+0.66Fa

Fa/Fr>0.95 Pr=0.6Fr+1.07Fa

Double-row angular contact ball bearings with a contact angle of 45°

Fa/Fr≤1.34 Pr=Fr+0.47Fa

Fa/Fr>1.34 Pr=0.54Fr+0.81Fa

Static equivalent radial load

Single-row angular contact ball bearings with a contact angle of 15°

For single bearing or bearing in pairs(7000 C.7000 C/DT)

P0r=0.5Fr+0.46Fa

P0rr P0r=Fr

For back-to-back and face-to-face arrangements (7000 C/DB.7000 C/DF)

P0r=Fr+0.92Fa

Single-row angular contact ball bearings with contact angle of 25°

For single bearing or bearing in pairs (7000 AC.7000 AC/DT)

P0r=0.5Fr+0.38Fa

when P0rr let P0r=Fr

For two bearings in back-to-back and face-to-face arrangements

P0r=Fr+0.76Fa

Single-row angular contact ball bearings with contact angle of 40°

For single bearing or bearing in pairs

P0r=0.5Fr+0.26Fa

when P0rr let P0r=Fr

For two bearings in back-to-back and face-to-face arrangements

P0r=Fr+0.52Fa

Four point contact ball bearings

P0r=Fr+0.58Fa

Double-row angular contact ball bearings with contact angle of 45°

P0r=Fr+0.44Fa

Fr Actual radial load of the bearing.

Fa Axial load of the bearing

The values of e .Y .Y1 .Y2 see Table 2.

Table 1 Axial internal clearance of four point contact ball bearings

μm

Nominal bore diameter d

mm

C2 clearance

Standard clearance

C3

clearance

C4

clearance

Over

To

Min

Max

Min

Max

Over

To

Min

Max

10

18

40

60

80

100

140

180

220

260

18

40

60

80

100

140

180

200

260

300

15

26

36

46

56

66

76

96

115

135

55

66

86

96

116

136

156

176

195

215

45

56

76

86

96

116

136

156

175

195

85

106

126

136

156

176

196

216

235

275

75

96

116

126

135

156

176

196

215

255

115

146

166

176

196

216

236

256

295

335

105

136

156

166

176

196

216

236

275

295

145

186

206

216

236

256

276

296

335

355

Table 2 Calculate Coefficient

μm


e

Y

Y1

Y2

0.172

0.345

0.689

1.03

1.38

2.07

3.45

5.17

6.89

0.38

0.4

0.43

0.46

0.47

0.5

0.55

0.56

0.56

1.47

1.4

1.3

1.23

1.19

1.12

1.02

1

1

1.65

1.57

1.46

1.38

1.34

1.26

1.14

1.12

1.12

2.39

2.28

2.11

2

1.93

1.82

1.66

1.63

1.63

Dw is the diameter of the rolling element


Xibei Bearing Co.,Ltd.

 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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