SKU: NNU4956B K/SPW33-SKF
SKF NNU4956BKSPW33 Super Precision Double Row Cylindrical Roller Spindle Bearing 280x380x100mm
SKF NNU4956BKSPW33 Super Precision Double Row Cylindrical Roller Spindle Bearing 280x380x100mm
Out of stock
Description
Description
SKF Super Precision Double Row Cylindrical Roller Bearings: Double row cylindrical roller bearings SKF super-precision double row cylindrical roller bearings are manufactured as standard in the NN 30 and NNU 49 series. Both series are available with either a cylindrical or a 1:12 tapered bore (designation suffix K). In machine tool applications, cylindrical roller bearings with a tapered bore are preferred over bearings with a cylindrical bore, because the taper enables more accurate adjustment of clearance or preload during mounting.
Benefits: High-speed capability, high radial load carrying capacity, high rigidity, low friction, low cross-sectional height.
- Brand / Quality:
- SKF - High Quality
- Inside Diameter:
- 280mm
- Outside Diameter:
- 380mm
- Width:
- 100mm
- Seals / Shields:
- None
- Style:
- Super Precision Cylindrical Roller Bearings
Technical
Technical
| --- | Bearing Dimensions |
|---|---|
| d | 280mm |
| D | 380mm |
| B | 100mm |
| --- | Speeds and loads |
| Dynamic load C | 765 Kn |
| Static load C<sub>o</sub> | 1800 kn |
| Fatigue load P<sub>u</sub> | 170 kN |
| Speed in grease | 1900rpm |
| Speeed in oil | 2200rpm |
| Weight | 32.5kg |
| --- | Abutment and fillet dimensions |
| d<sub>1</sub> | 345.6mm |
| E | 312mm |
| b | 13.9mm |
| K | 3mm |
| r<sub>1 and 2 min</sub> | 2.1mm |
| r<sub>3 and 4 min</sub> | 1.1mm |
| S<sup>2</sup> | 4.5mm |
| d<sub>a</sub> min | 291mm |
| d<sub>a</sub> max | 308mm |
| d<sub>b min</sub> | 316mm |
| D<sub>a max</sub> | 369mm |
| d<sub>n</sub> | 2mm |
| d<sub>n</sub> | 313.5mm |
| Reference grease quantity | 384 grams |
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