638 Miniature Ball Bearing 8x28x9mm
Category: Miniature Ball Bearings
Specifications
Inner Diameter (ID)
8
Outer Diameter (OD)
28
Width (W)
9
Overall Size (IDxODxW)
8x28x9
Dynamic Load Rating
3.97 kN
Static Load Rating
1.96 kN
Reference Speed
67 000 rpm
Limiting Speed
40 000 rpm
Cage Material
Steel
Seal Type
None On Both Sides
Clearance
CN
Precision
Grade 0
Operating Temperature
-40 °C to +120 °C
Mass
0.027 kg
Details
Miniature ball bearings are a type of small-sized ball bearings designed to handle light loads and operate in compact spaces. They are commonly used in applications where space is limited and low-friction, precise movement is required. Despite their small size, miniature ball bearings offer reliable performance and are essential components in various industries and devices.
SPECIFICATIONS
| Inner Diameter | 8 mm | Number of Rows | Single Row |
| Outer Diameter | 28 mm | Cage Material | Steel |
| Width | 9 mm | Seal Type | None On Both Sides |
| Dynamic Load Rating | 3.97 kN | Clearance | CN |
| Static Load Rating | 1.96 kN | Precision | Grade 0 |
| Fatigue Load Limit | 0.083 kN | Min Temperature | -40 °C |
| Reference Speed | 67 000 rpm | Max Temperature | +120 °C |
| Limiting Speed | 40 000 rpm | Size Standard | Metric System |
| Rolling Element | Ball | Mass | 0.027 kg |
FEATURES AND BENEFITS
-
Capable of carrying relatively more minor loads.
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Suitable for low, medium, and high speed applications.
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Suited for low noise and low torque applications.
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Accommodate radial and axial loads in both directions.
Yes, miniature ball bearings are designed to handle high rotational speeds, making them ideal for devices and equipment that require rapid movement.
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