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 standard does the vibration class of this bearing meet?

The vibration class of the bearing is above Z1

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Part Number Complete

C-E678ZZ

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

Specification/Dimensions

type
- C-E6□□ZZ
Clear
Inner Dia. d(Ø)
2

3

4

5

6

8
Clear
Outer Dia. D(Ø)
5

6

7

8

9

10

11

12

13

14

15

16

17

19

22

24

28
Clear
Width B (or T)(mm)
2.3

2.5

3

3.5

4

5

6

7

8

9
Clear
Basic Load Rating Cr (Dynamic)(N)
146

208

218

222

270

390

400

495

543

560

630

640

670

715

938

1080

1300

1330

1350

1610

1635

1730

1990

2190

2340

3194

3350

4000
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

Same day
Clear

Specify Alterations

Small Ball Bearings (C-E678ZZ)

Name: Small Ball Bearings
Brand: MISUMI
Price: 72 INR
Availability: InStock

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MISUMI

MiSUMi Economy

MISUMI

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Total Price :

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Product Description

Small Ball Bearings
Small ball bearings are used in machinery, such as electric motors, to reduce friction between moving parts. These bearings are available in various sizes to choose from.
[Feature]
● Bearing Size Standards: Metric System
● Inner Diameter Minimum / Maximum (mm.) : 2 and 8
● Outer Diameter Minimum / Maximum (mm.) : 5 and 28
● Width Minimum / Maximum (mm.) : 2.3 and 9
● Precision (JIS) : Class 0
● Bearing Type : Closed (Double Shielded (ZZ))
● Load Direction : Radial
[Application]
It is used to support and guide rotating machine's components, such as shafts, wheels, pulleys ,etc

Economy Miniature Ball Bearing

Reliability High Speed Capability Accuracy

- Size Range: Available in various sizes.

- Material: Made of SUJ2 steel for durability and performance.

- Size Range: Miniature size with small inner diameters in specified range.

- High Speed Capability: Suitable for high-speed applications due to small size.

- Versatility: Suitable for various miniature applications in electronics, instrumentation, and other industries.

MISUMI Standard

Cheaper Price

Product Variety

3D CAD
3D CAD Support

Ball Bearings Product Overview

・ Ball Bearings Light load, medium · low speed, special for medium precision rotation, realizing ultra-low price.
・ It is made of industry standard bearing steel with high surface hardness and wear resistance.
・ The vibration class of the product is above Z1

Ball Bearings Product Feature

・ Ball Bearings The interface radius of the channel located on the inner and outer ring is slightly larger than the radius of the sphere, in arc shape. Mainly can bear radial load.
・ In addition to the open type bearings, there are bearings with steel dust cover, bearings with contact rubber seal packing and bearings with non-contact rubber seal packing, or bearings with stop ring on the outer diameter of outer ring.
・ Ball Bearings with dust cover or seal packing are sealed with proper amount of high-quality grease. Deep groove ball bearings generally adopt steel plate stamped cage, which has low friction torque and accuracy grade of 0.

Ball Bearings Dimensional Drawing

Ball Bearings Product Dimensional Drawing
Deep groove ball bearing Dimensional drawing

Ball Bearings Example of Use

Motor

Gear unit

Machine tool
3 Machine tool

Ball Bearings Precautions

Ball Bearings When the precision of the shaft and bearing housing is poor, the bearing will be affected, and its due performance will not be exerted. For example, the poor precision of the mounting part with the bearing will cause relative inclination of the inner and outer rings. At this time, besides the bearing load, the edge load will be increased additionally, which will shorten the fatigue life of the bearing, and even more seriously, it will lead to damage such as cage breakage and sticking.

Please use the following special mounting tool for installation and removal

Ball Bearings heater
Bearing heater

Proper installation of the bearing heater can guarantee a long life of the bearing.
Rolling bearings are reliable mechanical components with long service life if they are installed and maintained correctly.
After the induction heater is used for heating, the bearing expands outward in the cylindrical direction, which can avoid the damage during installation. Induction heater is one of the most scientific heating methods, which does not need preheating, and can be heated to 110℃ in a few seconds or minutes depending on the weight of bearings, without damaging the prior lubrication

Ball Bearings puller
Bearing puller

When the installation state of the bearing is in the following situations, the special puller can be used for disassembly.
(a) Shaft shape: cylindrical shaft, Inner diameter shape of bearing inner ring: cylindrical hole.
(b) Shaft shape: cylindrical shaft, inner diameter shape of bearing inner ring with tight bushing: tapered hole.
(c) Shaft shape: tapered shaft, Inner diameter shape of bearing inner ring: tapered hole. In either state, the lock nut of the shaft (or the lock nut of the tight bushing) must be released during disassembly, and the lock nut must be placed in a loose state.

Ball Bearings Specification Table

Key points of economy series parts confirmation ①

Inner Diameter d (mm)		Clearance of MISUMI quality products (μm)		Clearance of economy series products (μm)
or More	or Less	Minimum	Max.	Minimum	Max.
Less than 10		5	10	7	15

Part Number	d	D	B	r (min.)	Key points of economy series parts confirmation ② Basic Rated Load		Allowable Rotational Speed rpm (Reference)	Mounting Dimensions			Weight (g) (Reference)
								Ds (min.)	dh (max.)	R (max.)
					Cr (Dynamic) N	Cor (Static) N		Ds (min.)	dh (max.)	R (max.)
C－E682ZZ	2	5	2.3	0.08	146	52	8000	2.7	3.9	0.08	0.17
C－E692ZZ	2	6	3	0.15	270	90		3	4.8	0.15	0.38
C－E673ZZ	3	6	2.5	0.1	146	52		3.6	5.4	0.08	0.2
C－E683ZZ		7	3	0.1	273	91		3.9	5.8	0.1	0.45
C－E693ZZ		8	4	0.15	392	125		4.2	6.8	0.15	0.83
C－E603ZZ		9	5	0.15	400	132			7.8		1.45
C－E623ZZ		10	4	0.15	441	153			8.8		1.66
C－E674ZZ	4	7	2.5	0.1	155	62		4.6	6.4	0.08	0.29
C－E684ZZ		9	4	0.1	448	157		5	7.8	0.1	1.01
C－E694ZZ		11		0.15	501	193		5.2	9.8	0.15	1.75
C－E604ZZ		12		0.2	670	245		5.6	10.4	0.2	2.29
C－E624ZZ		13	5	0.2	910	340		5.6	11.4	0.2	3.04
C－E634ZZ		16	5	0.3	938	366		6	14	0.3	5.21
C－E675ZZ	5	8	2.5	0.1	153	92		5.8	7.4	0.1	0.34
C－E685ZZ		11	5	0.15	501	197		6.2	9.8	0.2	1.96
C－E695ZZ		13	4	0.2	756	301		6.6	11.4		2.5
C－E605ZZ		14	5	0.2	931	354		6.6	12.4		3.48
C－E625ZZ		16	5	0.3	1211	469		7	14	0.3	4.86
C－E635ZZ		19	6	0.3	1635	627		7	17	0.3	8.34
C－E676ZZ	6	10	3	0.1	347	153		7.04	9.3	0.1	0.68
C－E686ZZ		13	5	0.15	756	308		7	11.8	0.2	2.69
C－E696ZZ		15	5	0.2	945	371		7.6	13.4	0.2	3.72
C－E606ZZ		17	6	0.3	1533	585		8	15	0.3	6.08
C－E626ZZ		19	6	0.3	1638	620		8	17	0.3	7.94
C－E678ZZ	8	12	3.5	0.1	380	192		9.05	11.33	0.1	0.97
C－E688ZZ		16	5	0.2	1127	497		9.6	14.4	0.2	4.02
C－E698ZZ		19	6	0.3	1393	606		10	17	0.3	7.18
C－E608ZZ		22	7		2345	980			20		12
C－E628ZZ		24	8		2800	1113			22		17
C－E638ZZ		28	9		3194	1388			26		30.3

kgf＝N×0.101972

Part Number

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

: 30; 45; 60

Part Number
C-E678ZZ SALE

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) Basic Load Rating Cor (Static)
(N) Weight
(g)

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)	Basic Load Rating Cor (Static) (N)	Weight (g)
	₹ 72.00 ₹ 61.20	1 Piece(s)	Available	Same day	10	8	12	3.5	543	274	0.97

₹ 72.00

₹ 61.20

1 Piece(s)

Available

Same day

3.5

543

274

0.97

Basic Information

Raceway Ring Shape	Ball	Bearing Type	Double Shielded	Outer Ring Type	Flat
Inner/Outer Ring Material	SUJ2 Equiv.	Specifications, Environment	Standard / Dust Resistant	Precision (JIS)	Class 0
Load Direction	Radial	Rolling Element Material	SUJ2	Size Standards	Metric System
Number of Raceway Ring Rows	Single Row	Allowable Rotational Speed(rpm)	8000

Please check the type/dimensions/specifications of the part C-E678ZZ in the Small Ball Bearings 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 standard does the vibration class of this bearing meet?: Answer: The vibration class of the bearing is above Z1

Check other FAQ (1 items) Hide

Product variants

Part Number
C-E606ZZ
C-E608ZZ
C-E623ZZ
C-E682ZZ
C-E683ZZ
C-E684ZZ

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)	Basic Load Rating Cor (Static) (N)	Weight (g)
₹ 44.00	1 Piece(s)	Available	Same day Stock	10	6	17	6	2190	835	6.08
₹ 44.00	1 Piece(s)	Available	Same day Stock	10	8	22	7	3350	1400	12
₹ 44.00	1 Piece(s)	Available	Same day Stock	10	3	10	4	630	218	1.66
₹ 73.00	1 Piece(s)	Available	Same day Stock	10	2	5	2.3	146	52	0.17
₹ 73.00	1 Piece(s)	Available	Same day Stock	10	3	7	3	390	130	0.45
₹ 73.00	1 Piece(s)	Available	Same day Stock	10	4	9	4	640	224	1.01

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