Angular Contact Ball Bearing 3NCHAR・3NCHAC Series
3NCHAR / JTEKT Corporation (Official website)
High-speed angular contact ball bearings of the 3NCHAR and 3NCHAC series. Contact angles of 15°, 20°, 25° and 30° are available.
Last verified: (date the content was verified against the source document)
Specifications
| Inner diameter d | 10〜120 mm |
|---|
How to choose Rolling Bearings
Points to check when selecting, with the values for this product (Angular Contact Ball Bearing 3NCHAR・3NCHAC Series).
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1. Bore and housing bore dimensions
This product: Inner diameter d 10〜120 mmSelect the bore diameter d to match the shaft seat, the outside diameter D to match the housing bore, and the width B to suit the installation space. Main dimensions are standardized in ISO and JIS dimension series, so interchangeable products can be found by boundary dimension designation. For tapered roller bearings, also check the assembled width T; for thrust bearings, also check the height H.
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2. Dynamic load rating based on life calculation
The basic dynamic load rating Cr is the reference value for calculating rated life. Verify that the required life is met using the equivalent load during operation and the rotational speed. For ball bearings, life is proportional to the cube of the load ratio, so providing load margin greatly extends life.
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3. Margin for static and shock loads
The basic static load rating C0r is the allowable standard for permanent deformation generated at the rolling elements and raceways under stationary or low-speed conditions. For applications with oscillating motion or shock loads, confirm that a static safety factor against the maximum load is secured using C0r.
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4. Operating speed and lubrication method
The limiting speed differs by lubrication method, and separate values are given for grease lubrication and oil lubrication. Confirm that the normal operating speed does not exceed the limiting value, and in high-speed ranges also consider cage material and precision grade. The reference speed can also be consulted as a thermal guideline.
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5. Precision grade and internal clearance
Precision grades (P0, P6, P5, etc.) indicate rotational accuracy and dimensional accuracy; for high-precision applications such as machine tool spindles, select higher grades. Internal clearance (C2, CN, C3, etc.) is selected to allow for changes caused by interference fit and temperature differences during operation.
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6. Materials and lubrication suited to the environment
For corrosive, high-temperature, vacuum, or clean environments, select specifications such as rings and rolling elements made of stainless steel or ceramics, or solid lubricants and fluorine grease for vacuum use. Check the operating temperature range, low dust generation, and whether food-grade grease registration applies against the application conditions.
This guide was written by AI based on the listed products' documents and specification items.
Description
Single-row and duplex angular contact ball bearings of the 3NCHAR, 3NCHAC and 3NCHAD series. Contact angles are distinguished by bearing number.
Features
- Wide selection of contact angles
- Supports multi-row combinations
Applications
- Machine tool spindles
- High-speed rotating parts
FAQ
- Q. What contact angles are available for the 3NCHAR・3NCHAC series angular contact ball bearings?
- A. Contact angles of 15°, 20°, 25° and 30° are available. Contact angles are distinguished by bearing number.
- Q. What applications are the 3NCHAR・3NCHAC series angular contact ball bearings suited for?
- A. They are high-speed angular contact ball bearings used in machine tool spindles and high-speed rotating parts.
- Q. Can the 3NCHAR・3NCHAC series angular contact ball bearings be used singly or in combination?
- A. They are single-row and duplex angular contact ball bearings and support multi-row combinations.
- Q. What is the range of bore diameter d for the 3NCHAR・3NCHAC series angular contact ball bearings?
- A. The bore diameter d ranges from 10 to 120 mm.
Written by AI based on the content of the source documents.
Source documents
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