PRECILENCE Angular Contact Ball Bearing PC/PM/H1-PC Series
PRECILENCE PC・PM系 / JTEKT Corporation (Official website) / Listed on page 66 of the document
Precision angular contact ball bearings with bore diameters of 25 to 110 mm for precision applications. Special specifications such as low NRRO are available upon inquiry.
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Specifications
| Inner diameter d | 25～110 mm |
|---|---|
| Outer diameter D | 42～130 mm |
| Width B | 9～22 mm |
| Contact Angle α | 15～20 ° |
| Limiting speed (grease lubrication) | 5000～15000 min-1 |
How to choose Rolling Bearings
Points to check when selecting, with the values for this product (PRECILENCE Angular Contact Ball Bearing PC/PM/H1-PC Series).
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1. Bore and housing bore dimensions
This product: Inner diameter d 25～110 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
This product: Limiting speed (grease lubrication) 5000～15000 min-1The 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
Centers on the PC and PM series (differing widths), with models listed by dimension for contact angles of 15° and 20°. Low NRRO specifications, ball specifications, contact angles and other options are subject to separate consultation. Basic dynamic load ratings and permissible rotational speeds are shown by dimension.
Features
- Wide range of sizes with bore diameters from 25 to 110 mm
- Selectable contact angles of 15° and 20°
- Special specifications such as low NRRO available upon individual consultation
Applications
- Precision spindles
- High-accuracy rotating parts
FAQ
- Q. What are the bore diameter, outside diameter and width ranges of the PRECILENCE Angular Contact Ball Bearing PC/PM/H1-PC Series?
- A. Bore diameter d is 25 to 110 mm, outside diameter D is 42 to 130 mm, and width B is 9 to 22 mm.
- Q. What contact angles can be selected for the PRECILENCE PC and PM series?
- A. Contact angles of 15° and 20° can be selected. Contact angle α is listed in the range of 15 to 20 °.
- Q. What are the limiting speeds and applications of the PRECILENCE PC and PM series?
- A. The limiting speed (grease lubrication) is 5000 to 15000 min-1. It is intended for use in precision spindles and high-accuracy rotating parts.
- Q. Can low NRRO specifications and ball specifications be selected for the PRECILENCE PC and PM series?
- A. Special specifications such as low NRRO, ball specifications and contact angles are subject to individual consultation.
Written by AI based on the content of the source documents.
Source documents
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