What is the difference between ball bearing and roller bearing?

The contact between ball bearing and raceway is point contact, and the contact surface is oval when stressed. Because of the point contact, resisting force value is small, and the ball bearing is suitable for the application conditions of low torque and high rotational speed. They also have the characteristics of low noise. Ball bearings have low loading capacity but can bear radial and axial loads. The contact between roller bearing and raceway is line contact, and the contact surface is square when stressed. Because of the line contact, the torque of roller bearing is higher than that of ball bearing, and its rigidity is higher. Roller bearings have higher loading capacity, and cylindrical roller bearings have retaining edges to bear slight axial loads.

What is the classification of bearings according to the shape of rolling elements?

Rolling bearings are mainly divided into: ball bearings and roller bearings. Among them, ball bearings are divided into: deep groove ball bearings, angular contact bearings and radial thrust ball bearings. Roller bearings are divided into: cylindrical roller bearings, needle bearings, cone roller bearings and self-aligning roller bearings.

What is the classification of bearings according to load direction?

Bearing are divided into: radial bearings and thrust bearings according to the load direction. Among them, radial bearings are divided into: radial thrust ball bearings and radial roller bearings. Thrust bearings are divided into: thrust ball bearings and thrust roller bearings.

What is the basic rated life of rolling bearings?

The basic rated life of rolling bearings refers to the total number of revolutions that 90% of the ball bearings can rotate without peeling when eleven groups of ball bearings of the same kind and specification rotate respectively under the same conditions.

What is the contact angle of this angular contact ball bearing?

The contact angle of this angular contact ball bearing is 25 degrees, and the domestic common usage rate is relatively high.

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Part Number Complete

E-B7008-DB

type Inner Dia. d Outer Dia. D Width B (or T) Basic Load Rating Cr (Dynamic) CAD Days to Ship

Specification/Dimensions

type
- E-B7□□□-DB
Clear
Inner Dia. d(Ø)
10

12

15

17

20

25

30

35

40

45

50

55

60

65

70

75

80

85

90

95

100
Clear
Outer Dia. D(Ø)
26

28

30

32

35

40

42

47

52

55

62

68

72

75

80

85

90

95

100

110

115

120

125

130

140

145

150

160

170

180
Clear
Width B (or T)(mm)
8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

28

30

32

34
Clear
Basic Load Rating Cr (Dynamic)(N)
7550

8100

8800

9950

10900

12100

13200

16500

16700

18300

23500

23600

24900

28400

30400

34700

36200

38400

45700

50500

51800

54600

54700

61300

64000

69300

70900

79100

86700

88600

95700

106000

108000

109000

111000

113000

129000

139000

160000

183000

198000

223000
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

Same day
Clear

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Angular Contact Ball Bearings Double Row DB Combination (E-B7008-DB)

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MiSUMi Economy

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Product Description

Angular Contact Ball Bearings Double Row DB Combination
Angular contact ball bearings double row are commonly used in applications that require high precision, high speed. These bearings are available in various sizes to choose from.
[Feature]
● Bearing Size Standards: Metric System
● Inner Diameter Minimum / Maximum (mm.) : 10 and 100
● Outer Diameter Minimum / Maximum (mm.) : 26 and 180
● Width Minimum / Maximum (mm.) : 8 and 34
● Precision (JIS) : Class 5
● Bearing Type : Open (No cover)
● Load Direction : Radial / Thrust Load or Axial Load
[Application]
It is used to support and guide rotating machine's components, such as shafts, wheels, pulleys ,etc

Economy Angular Contact Ball Bearings

Double row angular contact bearings High-precision ball bearings DB combination bearings

- Double row design for enhanced load-bearing capacity

- Ideal for high-precision and high-speed applications

- Wide size range available

- Open design for optimal performance in various environments

- Class 5 precision for superior accuracy and reliability

MISUMI Standard

Cheaper Price

Product Variety

3D CAD
3D CAD Support

Part Number

Incomplete part number.
Please use left hand selections to complete a part number.

: 30; 45; 60

Part Number
E-B7008-DB

Part Number	Price	Minimum Order Qty.	Volume Discount	Days to Ship	RoHS	Inner Dia. d (Ø)	Outer Dia. D (Ø)	Width B (or T) (mm)	Basic Load Rating Cr (Dynamic) (N)	Allowable Rotational Speed (rpm)	Basic Load Rating Cor (Static) (N)	Weight (g)
	₹ 1,462.00	1 Piece(s)	Available	Same day	10	40	68	15	30400	8900	29200	420

Basic Information

Raceway Ring Shape	Angular Bearing (Double)	Bearing Type	Open	Outer Ring Type	Flat
Inner/Outer Ring Material	SUJ2 Equiv.	Specifications, Environment	Standard	Precision (JIS)	Class 5
Load Direction	Radial / Thrust Load, Axial	Rolling Element Material	SUJ2 Equiv.	Size Standards	Metric System
Number of Raceway Ring Rows	Double Row

Please check the type/dimensions/specifications of the part E-B7008-DB in the Angular Contact Ball Bearings Double Row DB Combination series.

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Frequently asked question (FAQ)

Question: What is the difference between ball bearing and roller bearing?: Answer: The contact between ball bearing and raceway is point contact, and the contact surface is oval when stressed. Because of the point contact, resisting force value is small, and the ball bearing is suitable for the application conditions of low torque and high rotational speed. They also have the characteristics of low noise. Ball bearings have low loading capacity but can bear radial and axial loads. The contact between roller bearing and raceway is line contact, and the contact surface is square when stressed. Because of the line contact, the torque of roller bearing is higher than that of ball bearing, and its rigidity is higher. Roller bearings have higher loading capacity, and cylindrical roller bearings have retaining edges to bear slight axial loads.
Question: What is the classification of bearings according to the shape of rolling elements?: Answer: Rolling bearings are mainly divided into: ball bearings and roller bearings. Among them, ball bearings are divided into: deep groove ball bearings, angular contact bearings and radial thrust ball bearings. Roller bearings are divided into: cylindrical roller bearings, needle bearings, cone roller bearings and self-aligning roller bearings.
Question: What is the classification of bearings according to load direction?: Answer: Bearing are divided into: radial bearings and thrust bearings according to the load direction. Among them, radial bearings are divided into: radial thrust ball bearings and radial roller bearings. Thrust bearings are divided into: thrust ball bearings and thrust roller bearings.
Question: What is the basic rated life of rolling bearings?: Answer: The basic rated life of rolling bearings refers to the total number of revolutions that 90% of the ball bearings can rotate without peeling when eleven groups of ball bearings of the same kind and specification rotate respectively under the same conditions.
Question: What is the contact angle of this angular contact ball bearing?: Answer: The contact angle of this angular contact ball bearing is 25 degrees, and the domestic common usage rate is relatively high.

Check other FAQ (2 items) Hide

Product variants

Part Number
E-B7003-DB
E-B7004-DB
E-B7005-DB
E-B7009-DB
E-B7010-DB
E-B7011-DB

Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	RoHS	Inner Dia. d (Ø)	Outer Dia. D (Ø)	Width B (or T) (mm)	Basic Load Rating Cr (Dynamic) (N)	Allowable Rotational Speed (rpm)	Basic Load Rating Cor (Static) (N)	Weight (g)
₹ 756.00	1 Piece(s)	Available	Same day Stock	10	17	35	10	10900	18000	8250	90
₹ 809.00	1 Piece(s)	Available	Same day Stock	10	20	42	12	16700	15000	12200	158
₹ 1,012.00	1 Piece(s)	Available	Same day Stock	10	25	47	12	18300	13000	14800	182
₹ 1,688.00	1 Piece(s)	Available	Same day Stock	10	45	75	16	36200	8000	35400	520
₹ 2,072.00	1 Piece(s)	Available	Same day Stock	10	50	80	16	38400	7300	40200	580
₹ 2,241.00	1 Piece(s)	Available	Same day Stock	10	55	90	18	50500	6600	52500	840

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