SKF Hybrid Deep Groove Ball Bearing (Basic Design Bearing d 50-100 mm)
ハイブリッド深溝玉軸受 6210/6310 系列など / SKF (Official website) / Listed on page 76 of the document
Open hybrid deep groove ball bearing with silicon nitride rolling elements and an inner diameter of 50 to 100 mm. Suitable for high-speed rotation and light-load applications.
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Specifications
| Inner diameter d | 50～100 mm |
|---|---|
| Outer diameter D | 90～215 mm |
| Reference rotational speed | 9000～20000 r/min |
How to choose Deep Groove Ball Bearings
Points to check when selecting, with the values for this product (SKF Hybrid Deep Groove Ball Bearing (Basic Design Bearing d 50-100 mm)).
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1. Main dimensions to suit shaft and housing
This product: Inner diameter d 50～100 mmSelect the bore diameter d to match the shaft diameter, the outside diameter D to match the housing bore, and the width B to suit the installation space. The listed products cover a wide range of bore diameters from 0.6 to 1420 mm, and even at the same bore diameter there are dimension series with different outside diameters and widths. Since load capacity and mass change with the dimension series, confirm the three dimensions in combination.
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2. Basic dynamic load rating for life calculation
The basic dynamic load rating Cr is the reference value for calculating rolling fatigue life, and life is estimated from the ratio of the actual applied load to Cr. For high loads or when long life is required, select a bearing with a larger Cr. Bearings made of special materials may have lower ratings than steel bearings of the same dimensions, so confirm life under the operating conditions.
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3. Check static and shock loads against static rating
The basic static load rating C0r is the guideline load at which permanent deformation does not occur, applicable when stationary, rotating at low speed, or subjected to shock loads. For applications with oscillating motion or large loads while stopped, select with emphasis on the ratio to C0r (static safety factor) rather than the dynamic rating.
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4. Internal clearance to suit fit and temperature
Radial internal clearance decreases during operation due to interference fits and temperature differences between the inner and outer rings. Clearances larger than standard, such as C3, are used in applications where the inner ring tends to expand, such as motors or high-temperature environments. Clearance that is too small leads to heat generation and seizure, so determine the class from the fit and operating temperature.
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5. Materials and lubrication suited to the environment
Stainless steel or ceramics (silicon nitride, zirconia, silicon carbide) are used in water or chemical solutions, while solid lubricants such as graphite or fluorine-based solids and fluorine grease are used in high-temperature, vacuum or clean environments. Listed products have maximum operating temperatures of 250 to 350°C, so select the material and lubrication method based on temperature, atmosphere and dust-generation requirements.
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6. Check speed limits and electrical corrosion countermeasures
Confirm that the limiting speed and reference speed exceed the operating speed. In equipment where shaft current flows, such as inverter-driven motors, hybrid bearings with insulating-coated or ceramic balls can prevent electrolytic corrosion. Ceramic balls are lighter than steel balls, so the effect of centrifugal force is reduced even at high speeds.
This guide was written by AI based on the listed products' documents and specification items.
Description
Hybrid bearing combining ceramic rolling elements (silicon nitride) with specially heat-treated raceways. Internal clearance is C3, and the cage is not a pressed steel cage but a configuration selected according to specification. Supplied as a basic design bearing without seals.
Features
- Silicon nitride rolling elements
- SKF Explorer performance class
- Suitable for high-speed rotation
Applications
- Electric motors
- Industrial high-speed drives
FAQ
- Q. What is the range of inner diameter and outer diameter for the SKF Hybrid Deep Groove Ball Bearing (Basic Design Bearing d 50-100 mm)?
- A. The inner diameter d is 50 to 100 mm, and the outer diameter D is 90 to 215 mm.
- Q. What material is used for the rolling elements of the SKF Hybrid Deep Groove Ball Bearing?
- A. It uses silicon nitride rolling elements. The hybrid configuration combines them with specially heat-treated raceways.
- Q. What is the reference rotational speed of the SKF Hybrid Deep Groove Ball Bearing?
- A. The reference speed is 9000 to 20000 r/min. It is suitable for high-speed rotation.
- Q. What are the internal clearance and seal options of the SKF Hybrid Deep Groove Ball Bearing?
- A. The internal clearance is C3. It is supplied as a basic design bearing without seals.
- Q. What applications is the SKF Hybrid Deep Groove Ball Bearing suitable for?
- A. It is suitable for use in electric motors and industrial high-speed drives. It is a bearing suited to high-speed rotation and light-load applications.
Written by AI based on the content of the source documents.
Source documents
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Catalog
SKF 転がり軸受カタログ 15 エンジニアリング製品 15A センサー軸受ユニット
120 pages Open page 76
Found on: https://azuma-eg.com/catalogue/
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