HAR Series High-Performance Angular Contact Ball Bearings
Model 3NC HAR013CA / ハイアビリー / JTEKT Corporation (Official website) / Listed on page 50 of the document
High-speed, low-heat-generation angular contact ball bearings for machine tool spindles. Lower temperature rise and higher limiting rotational speed than conventional products.
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Specifications
| Bearing bore diameter (HAR013CA) | 65 mm |
|---|---|
| Preload (Fixed Position) | 150 N |
How to choose Rolling Bearings
Points to check when selecting, with the values for this product (3NC HAR013CA).
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1. Bore and housing bore dimensions
Select 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
Angular contact ball bearings optimized for machine tool spindles. Available in R, C, D, and X type configurations, with some models using ceramic balls. Delivers high-speed performance with fixed-position preload and allows easy replacement of conventional products.
Features
- Temperature rise reduced by 20-30% (compared to our conventional products)
- Limiting speed increased by 1.2-1.5 times (compared to our conventional products)
- ISO-standard compliant boundary dimensions for easy replacement
Applications
- Machine tool spindles
- Oil-air lubrication equipment
- Grease-lubricated spindles
FAQ
- Q. What is the bore diameter of the 3NC HAR013CA (HAR Series High-Performance Angular Contact Ball Bearing)?
- A. The bore diameter (HAR013CA) is 65 mm.
- Q. What applications can the 3NC HAR013CA be used for?
- A. It can be used for machine tool spindles, oil-air lubrication equipment, and grease-lubricated spindles.
- Q. What are the high-speed performance and heat generation characteristics of the 3NC HAR013CA?
- A. Compared to conventional products, it reduces temperature rise by 20-30% (compared to our conventional products) and increases limiting speed by 1.2-1.5 times (compared to our conventional products).
- Q. Can the 3NC HAR013CA replace conventional products?
- A. Yes. It has ISO-standard compliant boundary dimensions, making it easy to replace conventional products. It delivers high-speed performance with fixed-position preload.
- Q. What is the preload and what types are available for the 3NC HAR013CA?
- A. The fixed-position preload is 150 N. It is available in R, C, D, and X types, with some models using ceramic balls.
Written by AI based on the content of the source documents.
Source documents
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