SKU: 7911A5TRQUMP3-NSK
NSK 7911A5TRQUMP3 Super Precision Angular Contact Spindle Bearing 55x80x13mm (Set of 4)
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Description
NSK Super Precision Spindle Bearings: NSK Super Precision Angular Contact Spindle Bearings are single-row angular contact ball bearings. They are manufactured in such a way that they can be mounted in any arrangement without suffering performance losses, and can be combined in different sets. This brings essential logistical advantages, especially in spare parts purchasing and stock-keeping. The bearings can be arranged according to the symbol on the outer ring surface.
The NSK range of Super Precision Bearings for main spindles in machine tools is among the most sophisticated in the world and represents the highest-performance technology.
This item is supplied as a set of 4 bearings.
Benefits: Trusted world-renowned NSK brand, highest precision, excellent speed ability.
- Brand / Quality:
- NSK - High Quality
- Inside Diameter:
- 55mm
- Outside Diameter:
- 80mm
- Width:
- 13mm
- Seals / Shields:
- None
- Style:
- Universal Matched Quad Bearing Set
- Contact Angle:
- 25 Degree contact angle
- Bearing Preload:
- Medium preload
Technical
| --- | Bearing dimensions |
|---|---|
| d | 55mm |
| D | 80mm |
| B | 13mm |
| r<sub>min</sub> | 1mm |
| r1<sub>min</sub> | 0.6mm |
| --- | Loads angles and speeds |
| C<sub>r</sub> | 19Kn |
| C<sub>or</sub> | 16.8kN |
| Axial load Kn | 12.5 kN |
| Contact angle | 25 degrees |
| Factor f<sub>o</sub> | - |
| Effective diameter | 22.2mm |
| Max speed in grease | 14900 rpm |
| Max speed in oil | 22300 rpm |
| --- | Fitting dimensions |
| d<sub>a min</sub> | 61mm |
| D<sub>a max</sub> | 74mm |
| D<sub>b max</sub> | 75mm |
| r<sub>a max</sub> | 1mm |
| r<sub>b max</sub> | 0.5mm |
| Weight | 0.736kg |
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