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NTN Ball Bearings（Size Standards：Metric System）

NTN offers products Ball Bearings specified by Size Standards Metric System from Automation Components product category. There are a total of 10 items. Search and select detailed specifications of parts for your machine with free CAD downloads. NTN products are available to order through MISUMI online 24 hours a day. Free shipping, no minimum order.

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  • You can add up to 6 items per a category to the compare list.
    Sale
    Deep-Groove Ball Bearing
    Until 31/03/2025
    Sale
    Until 31/03/2025

    Deep-Groove Ball Bearing

    NTN

    Deep groove ball bearings with deep arcuate grooves on the tracks of both the inner and outer rings.
    [Features]
    ・ It is possible to receive a radial load, an axial load in both directions, or a combined load that is a combination thereof.
    ・ Ideal for high-speed rotation.
    ・ Open type, sealed ball bearings with grease (both sealed or both shielded bearings), bearings with retaining rings, etc., are also available.
    [Applications]
    ・ It can be used for parts that rotate at high speed with low friction torque and for all applications that require low noise and low vibration.
    Read more
    From: ฿ 66.67
    Special Price
    Days to Ship: day to ship Same day
    day to ship Same day
  • You can add up to 6 items per a category to the compare list.
    Sale
    Miniature Ball Bearings And Small Diameter Ball Bearings
    Until 31/03/2025
    Sale
    Until 31/03/2025

    Miniature Ball Bearings And Small Diameter Ball Bearings

    NTN

    Small diameter ball bearings with a bearing outer diameter of less than 9 mm, a bearing inner diameter of less than 10 mm, and a bearing outer diameter of 9 mm or more.
    [Features]
    ·Small diameter sizes are available.
    ·Suitable for high speed rotation.
    ·Open type, sealed ball bearings with grease (both seals or both shield bearings), and bearings with retaining rings are available.
    [Application]
    ・ It can be used for parts that rotate at high speed with low friction torque and for all applications that require low noise and low vibration.
    Read more
    From: ฿ 56.67
    Special Price
    Days to Ship: day to ship Same day
    day to ship Same day
  • You can add up to 6 items per a category to the compare list.
    Sale
    Angular Ball Bearing
    Until 31/03/2025
    Sale
    Until 31/03/2025

    Angular Ball Bearing

    NTN

    Angular ball bearings that can receive a certain amount of axial (axial direction) load.
    [Features]
    ・ The straight line connecting the contact points between the ball and the inner and outer rings has an angle with respect to the radial direction.
    ・ Radial load and unidirectional axial load can be applied.
    ・ When a radial load acts, an axial component force is generated, so 2 are generally used facing each other.
    [Applications]
    ・ Ideal for machine tools, feed screw mechanisms, ball screw support units, etc.
    Read more
    From: ฿ 100.00
    Special Price
    Days to Ship: day to ship Same day
    day to ship Same day
  • You can add up to 6 items per a category to the compare list.
    Sale
    Single-Direction Thrust Ball Bearing
    Until 31/03/2025
    Sale
    Until 31/03/2025

    Single-Direction Thrust Ball Bearing

    NTN

    Bearings with a normal contact angle of 90°. Features balls between the set of bearing discs (axial load discs and housing race disc).
    [Features]
    · Can only support axial loads in one direction, and cannot support radial loads.
    · Not appropriate for high-speed rotations.
    [Applications]
    · For steel facilities, pumps, machine tools, wind power generation, etc.
    Read more
    From: ฿ 100.00
    Special Price
    Days to Ship: day to ship Same day
    day to ship Same day
  • You can add up to 6 items per a category to the compare list.
    Sale
    AC Ball Bearing
    Until 31/03/2025
    Sale
    Until 31/03/2025

    AC Ball Bearing

    NTN

    A bearing with the same main dimensions as a standard bearing, but with an O-ring mounted in 2 grooves provided on the outer diameter of the outer ring.
    [Features]
    ·Ideal for use when creep may occur in places where the outer ring cannot be squeezed due to the action of the outer ring rotational load.
    ·Since it can move in the axial direction, it can be used as a free-side bearing that allows elongation due to thermal expansion of the shaft.
    [Application]
    ·Ideal for parts where creep is likely to occur, such as bearings for motors.
    Read more
    From: ฿ 100.00
    Special Price
    Days to Ship: day to ship Same day
    day to ship Same day
  • You can add up to 6 items per a category to the compare list.
    Sale
    Thrust Ball Bearing, Open Type
    Until 31/03/2025
    Sale
    Until 31/03/2025

    Thrust Ball Bearing, Open Type

    NTN

    A thrust ball bearing with a contact angle of 90° normally, with a ball between a set of track discs (axial load disc and housing race disc).
    [Features]
    ·Unidirectional axial load can be applied.
    ·Note that radial loads cannot be applied.
    ·Not suitable for high speed rotation.
    [Application]
    ·Ideal for steel equipment, pumps, machine tools, wind power generation, etc.
    Read more
    From: ฿ 100.00
    Special Price
    Days to Ship: day to ship Same day
    day to ship Same day
  • You can add up to 6 items per a category to the compare list.
    Sale
    Ball Bearing, Double-Row Angular Contact
    Until 31/03/2025
    Sale
    Until 31/03/2025

    Ball Bearing, Double-Row Angular Contact

    NTN

    A bearing with a structure in which single-row angular ball bearings are combined on the back (DB) and the inner and outer rings are integrated.
    [Features]
    ・ The contact angle is 25°.
    ・ It can receive radial load and axial load in both directions, and also has a load capacity for moment load.
    ・ This bearing is also available in a sealed type or a shield type, and the rated load changes compared to the open type.
    [Applications]
    ・ Machine Tools.
    ・ Feed screw mechanism.
    ・ Ball screw support unit.
    Read more
    From: ฿ 100.00
    Special Price
    Days to Ship: day to ship Same day
    day to ship Same day
  • You can add up to 6 items per a category to the compare list.
    Sale
    Ball Bearing, Precision Angular Contact
    Until 31/03/2025
    Sale
    Until 31/03/2025

    Ball Bearing, Precision Angular Contact

    NTN

    An angular ball bearing that can support axial loads up to a certain level.
    [Features]
    · The straight line that connects the contact points between the balls and the inner and outer rings has a certain angle relative to the radial direction.
    · Radial load and axial load can be applied in one direction.
    · When a radial load is applied, axial component is generated, hence generally, two are used facing each other.
    · Refer to Precision Rolling Bearings (CAT. No. 2260 / J) for bearings with a contact angle of 15° and bearing accuracy of JIS Class 5 or higher.
    [Applications]
    · Ideal for machine tools, feed-screw mechanisms and ball screw support units.
    Read more
    From: ฿ 100.00
    Special Price
    Days to Ship: day to ship Same day
    day to ship Same day
  • You can add up to 6 items per a category to the compare list.
    Sale
    Self-Aligning Ball Bearings (Taper Hole / Cylindrical Hole)
    Until 31/03/2025
    Sale
    Until 31/03/2025

    Self-Aligning Ball Bearings (Taper Hole / Cylindrical Hole)

    NTN

    The center of the raceway surface of the outer ring is a spherical surface with a point that coincides with the center of the bearing, and the inner ring is a ball bearing with 2 rows of raceway grooves.
    [Features]
    ·The ball, retainer, and inner ring can rotate freely with respect to the outer ring.
    ·Misalignment of the shaft center caused by machining errors of the shaft or housing or such as mounting of bearings is automatically adjusted.
    ·Since the load capacity of the axial load is not very large, it is not suitable for places with a large axial load.
    ·If an adapter is used for a bearing with a tapered hole with inner diameter, it is often used for such as transmission shafts because it is easy to install and remove.
    [Application]
    ·Ideal for areas where centering of the shaft and housing is difficult.
    Read more
    From: ฿ 100.00
    Special Price
    Days to Ship: day to ship Same day
    day to ship Same day
  • You can add up to 6 items per a category to the compare list.
    Sale
    Rubber Mold Bearings
    Until 31/03/2025
    Sale
    Until 31/03/2025

    Rubber Mold Bearings

    NTN

    This rubber mold bearing is a rubber roller which is produced by burning urethane rubber and directly baking it to the outer diameter of a miniature, small-diameter, or small deep groove ball bearing, making it suitable for feed mechanisms that require accuracy as well as other low vibration and low noise applications.
    Read more
    From: ฿ 356.20
    Special Price
    Days to Ship: day to ship Same day
    day to ship Same day
Brand
Product Series
CAD
From
Days to Ship
Inner Dia. d(Ø)
Outer Dia. D(Ø)
Width B(mm)
Raceway Ring Shape
Bearing Type
Outer Ring Type
Inner/Outer Ring Material
Basic Dynamic Load Rating(N)
Specifications, Environment
Precision (JIS)
Load Direction
Rolling Element Material
Size Standards
Number of Raceway Ring Rows
Clearance Symbol
You can add up to 6 items per a category to the compare list.
Sale
Deep-Groove Ball Bearing
Until 31/03/2025
You can add up to 6 items per a category to the compare list.
Sale
Miniature Ball Bearings And Small Diameter Ball Bearings
Until 31/03/2025
You can add up to 6 items per a category to the compare list.
Sale
Angular Ball Bearing
Until 31/03/2025
You can add up to 6 items per a category to the compare list.
Sale
Single-Direction Thrust Ball Bearing
Until 31/03/2025
You can add up to 6 items per a category to the compare list.
Sale
AC Ball Bearing
Until 31/03/2025
You can add up to 6 items per a category to the compare list.
Sale
Thrust Ball Bearing, Open Type
Until 31/03/2025
You can add up to 6 items per a category to the compare list.
Sale
Ball Bearing, Double-Row Angular Contact
Until 31/03/2025
You can add up to 6 items per a category to the compare list.
Sale
Ball Bearing, Precision Angular Contact
Until 31/03/2025
You can add up to 6 items per a category to the compare list.
Sale
Self-Aligning Ball Bearings (Taper Hole / Cylindrical Hole)
Until 31/03/2025
You can add up to 6 items per a category to the compare list.
Sale
Rubber Mold Bearings
Until 31/03/2025
Brand

NTN

NTN

NTN

NTN

NTN

NTN

NTN

NTN

NTN

NTN

Product Series

Deep-Groove Ball Bearing

Miniature Ball Bearings And Small Diameter Ball Bearings

Angular Ball Bearing

Single-Direction Thrust Ball Bearing

AC Ball Bearing

Thrust Ball Bearing, Open Type

Ball Bearing, Double-Row Angular Contact

Ball Bearing, Precision Angular Contact

Self-Aligning Ball Bearings (Taper Hole / Cylindrical Hole)

Rubber Mold Bearings

CAD
  • 2D / 3D
  • 2D / 3D
  • 2D / 3D
  • 2D / 3D
  • 2D / 3D
From

฿ 66.67

Special Price

On Sale Until 31/03/2025

฿ 56.67

Special Price

On Sale Until 31/03/2025

฿ 100.00

Special Price

On Sale Until 31/03/2025

฿ 100.00

Special Price

On Sale Until 31/03/2025

฿ 100.00

Special Price

On Sale Until 31/03/2025

฿ 100.00

Special Price

On Sale Until 31/03/2025

฿ 100.00

Special Price

On Sale Until 31/03/2025

฿ 100.00

Special Price

On Sale Until 31/03/2025

฿ 100.00

Special Price

On Sale Until 31/03/2025

฿ 356.20

Special Price

On Sale Until 31/03/2025

Days to Ship Same day Same day Same day Same day Same day Same day Same day Same day Same day Same day
Inner Dia. d(Ø)10 ～ 3601.5 ～ 1010 ～ 20010 ～ 10010 ～ 4525 ～ 40010 ～ 8510 ～ 10010 ～ 1104
Outer Dia. D(Ø)15 ～ 5404 ～ 2626 ～ 38024 ～ 21030 ～ 10047 ～ 48030 ～ 15022 ～ 18030 ～ 24013
Width B(mm)3 ～ 821.5 ～ 88 ～ 1009 ～ 859 ～ 2511 ～ 10514.3 ～ 63.56 ～ 689 ～ 804
Raceway Ring ShapeBallBall / Thrust BallAngular Contact Ball (Single Row) / Angular Contact Ball (Multi-Row)Thrust BallBallThrust BallAngular Contact Ball (Multi-Row)Angular Contact Ball (Single Row) / Angular Contact Ball (Multi-Row)Self-Aligning BallBall
Bearing TypeOpen / Double Shielded / Rubber Sealed / Single ShieldedOpen / Double Shielded / Rubber Sealed / Single ShieldedOpen / Rubber SealedOpenDouble Shielded / Rubber SealedOpenOpen / Double Shielded / Rubber SealedOpenOpenDouble Shielded
Outer Ring TypeFlat / With U-Shaped GrooveFlat / With Retaining Ring GroovesFlatFlatDeep GrooveFlatFlat / With U-Shaped GrooveFlatSphericalFlat
Inner/Outer Ring MaterialSteel / Stainless SteelSteel / Stainless SteelSteelSteelSteelSteelSteelSteelSteelStainless Steel
Basic Dynamic Load Rating(N)4,300 ～ 4400001,610 ～ 6400005,100 ～ 41000010000 ～ 3700005,100 ～ 5300020400 ～ 5450007150 ～ 1590003200 ～ 1490007,750 ～ 211000640
Specifications, EnvironmentStandard / Dust ResistantStandard / Dust ResistantStandard / Abrasion Resistant / Dust Resistant / Highly DurableStandardStandard / Dust ResistantStandardStandardStandard / For High SpeedStandardStandard
Precision (JIS)Class 0 / Class 4 / Class 5 / Class 6Class 0Class 0 / Class 4 / Class 5Class 0Class 0Class 0 / Class 5Class 0Class 0 / Class 2 / Class 4 / Class 5Class 0Class 0
Load DirectionRadial / ThrustRadial / ThrustRadial / ThrustThrustRadial / ThrustThrustRadial / ThrustRadialRadialRadial
Rolling Element MaterialSteel / Stainless SteelSteel / Stainless Steel / ChromeSteelSteelSteelSteelSteelSteelSteelStainless Steel
Size StandardsMetric SystemMetric SystemMetric SystemMetric SystemMetric SystemMetric SystemMetric SystemMetric SystemMetric SystemMetric System
Number of Raceway Ring RowsSingle RowSingle RowSingle Row / Double RowSingle RowSingle RowSingle RowDouble RowSingle Row / Double RowDouble RowSingle Row
Clearance Symbol----------

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FAQ Bearing

Question: How to select the right ball bearing for your application
Answer: 1. Choose a bearing that is fit to the "Bore" and "Shaft’s diameter" for not being loose in installation and causing misalignment.
2. Choose a bearing that is matched to the shaft's rotating speed to reduce heat in the "Ball" and "Ring" that will make bearings deteriorate.
3. Choose a bearing that is matched to the "radial load" and "axial load" of the application.
4. Choose a bearing that has clearance that matches the temperature in the operation area, like the conveyor of a furnace, because "Ball" and "Ring" will expand from heat and create more.
5. Choose a bearing that is compatible with the environment of the operation area, like a bearing that has a dust cover to prevent dust from creeping in or a bearing that is capable of heat resistance.
Question: What are bearing types and their various applications
Answer: Normally, bearing can be divided into 2 groups:
1. Rolling-element bearings that contain "Balls" or "Rollers" between the "Outer - Inner Rings" to carry loads These bearings have 2 types.
  1.1. Ball bearing: use balls as rolling elements. It can take bolt "Radial Load" and "Axial Load". Example: Bearing in a Bicycle’s Wheel.
  1.2. Roller bearing: use rollers as rolling elements. Good to carry "Radial Load". Example: Bearing in the Conveyor’s Pulley.
2. Plain bearing: It has 2 components. 1st is "Journal" which is a hollow cylinder case, and "Journal Bearing" which is an inside bore. This plain bearing uses oil as lubrication and is capable of self-alignment. Good for low rotating speed and eccentric force like an excavator cylinder rod end.
Question: How to read and use a ball bearing size chart? Please use this picture
Answer: How to read and use a ball bearing size chart
Basically, bearing size tables contain 4 columns.
- 1st column is Part Number.
- 2nd column is "Inside Diameter" or “d” which tells the size of the shaft.
- 3rd column is "Outside Diameter" or “D” which tells the size of the bore.
- 4th column is “Bore” or “B” which tells the width of the bearing so that it can be installed properly.
- Some types of bearing size chart might have other columns for more detail. Such as rotating speed, basic load rating, mass etc.
The above information is referenced from Product catalog from MISUMI. In some manufacturers, the order of the tables may slightly change.
Question: Whar are bearing materials and their properties
Answer: - Carbon steel is the cheapest and strongest,  but the material has low heat resistance and is not able to take high loads or a high rotating speed.
- Chrome steel is stronger and able to take a higher load than carbon steel, but it requires lubrication. and the material is not resistant to chemicals and corrosion.
- Stainless steel has high efficiency, strong, and resistant to corrosion. but it’s heavy, requires lubrication. and expensive.
- Ceramic have high-temperature resistant, resistant to corrosion and light weight. but load capacity is lower than steel Bearing.
- Polymer have many varieties: nylon, polyethylene (PE), etc. The Polymer’s bearing has low-friction properties, light weight, resistance to rust. but it’s expensive and low of heat resistance.
- Hybrid is created by combining materials for the highest load capacity. capable of being heat-resistant and be able to work under conditions of high rotating speed. But it’s extremely expensive and hard to find. So, it has been used for specific applications only.
Question: How to troubleshoot common problems with ball bearings
Answer: 1. Flaking: Mostly, this problem arises from fractions that creep into bearing. made the ball/Roller or roller scratch with internal parts. This could be prevented by using bearings that have a dust cover and lubricating them with grease.
2. Rusting: The source of this problem comes from water/humidity that gets inside the bearing. Lubrication by using grease is going to coat the bearing’s surface and prevent contact with humidity in the air.
3. Cage distortion: Mostly, this problem comes from drop bearings. But in any case, misassembling is also the cause of the problem. Example Clearance after assembly is not up to standard. Made it to have a gap that balls bump with cage.
4. Fracture: This could be caused by many reasons, but in summary, it is caused by bearings taking a higher load than is allowable. like using the wrong type of bearing or a machine working in the wrong condition.
Question: What distinguishes a simple ball bearing from a deep groove ball bearing?
Answer: Deep Grove Ball Bearings have a raceway that fits the size of the balls. That’s made the Deep Grove Ball Bearing more stable and able to take a higher load than a normal bearing. Still, it has low-friction properties and can take both radial and axial loads.

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