Cylindrical Roller Bearing N1000, HAN1000, 3NCN1000 Series
N1000 / HAN1000 / HAN1000B / 3NCN1000（各K付きテーパ穴含む） / JTEKT Corporation (Official website)
Single-row cylindrical roller bearings for machine tool spindles. Available in standard, ceramic rolling element high-precision/high-speed, and ultra-high-speed specifications, with bore diameters of 30 to 160 mm.
Last verified: (date the content was verified against the source document)
Specifications
| Inner diameter d | 30 to 160 mm |
|---|---|
| Outer diameter D | 55〜240 mm |
| Basic dynamic load rating (N1006) | 23.4 kN |
| Permissible speed (grease, N1006) | 18000 min-1 |
How to choose Rolling Bearings
Points to check when selecting, with the values for this product (Cylindrical Roller Bearing N1000, HAN1000, 3NCN1000 Series).
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1. Bore and housing bore dimensions
This product: Inner diameter d 30 to 160 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 cylindrical roller bearings. The N1000 series is the standard type, the 3NCN1000 series uses ceramic rolling elements, and the HAN1000 series is the high-speed type. HAN1000B is the ultra-high-speed type. A tapered bore (K) type is also available.
Features
- Single-row design widely used for spindles
- 3NCN1000 series with ceramic rolling elements available
- HAN1000B series with ultra-high-speed specification available
Applications
- Machine tool spindles
FAQ
- Q. What are the bore diameter and outside diameter ranges for the N1000, HAN1000, and 3NCN1000 series?
- A. Bore diameter d is 30 to 160 mm, and outside diameter D is 55 to 240 mm.
- Q. What are the differences between the N1000, 3NCN1000, and HAN1000 series?
- A. The N1000 series is the standard type, the 3NCN1000 series uses ceramic rolling elements, and the HAN1000 series is the high-speed type. HAN1000B is the ultra-high-speed type.
- Q. What are the basic dynamic load rating and permissible rotational speed (grease) of the N1000 series cylindrical roller bearings?
- A. For N1006, the basic dynamic load rating is 23.4 kN and the permissible rotational speed (grease) is 18000 min-1.
- Q. What applications are the N1000 series suited for?
- A. It is a single-row cylindrical roller bearing for machine tool spindles, with a single-row design widely used for spindles.
Written by AI based on the content of the source documents.
Source documents
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