Technical data
36 parametersIdentification
- Manufacturer
- FAG
- Type
- Cylindrical roller bearing
- Part number (SKU)
- NNU4956-S-K-M-SP#N1
- EAN
- 4012801335843
- Cage
- M
- Tolerance class
- SP
Dimensions
- Bore d
- 280 mm
- Outside diameter D
- 380 mm
- Width B
- 100 mm
- Mass
- 44.00 kg
- Radial clearance
- C1 (Group 1)
Load ratings and operation
- Dynamic load rating C
- 770000 N
- Static load rating C₀
- 1790000 N
Full manufacturer specification23 parameters · expand
- Axial displacement
- 5.4 mm
- Bore design
- K
- Cage
- M
- Diameter of housing shoulder
- 354.0 mm
- Diameter of housing shoulder tolerance
- H12
- Diameter shaft shoulder tolerance
- h12
- Fatigue load limit, radial
- 198000.0 N
- Inner ring raceway diameter
- 312.0 mm
- Limiting speed for grease lubrication
- 1970.0 1/min
- Limiting speed for oil lubrication
- 2320.0 1/min
- Lubricating groove width
- 15.0 mm
- Lubrication hole diameter
- 8.0 mm
- Max. operating temperature
- 150.0 °C
- Maximum recess radius
- 2.1 mm
- Min. operating temperature
- -30.0 °C
- Minimum chamfer
- 2.1 mm
- Number of rows
- 2
- Outer ring type
- S
- PFAS
- no
- Radial internal clearance
- C1 (Group 1)
- REACH
- REACH compliant with declarable lead proportion
- RoHS
- RoHS compliant with declarable substances
- Shaft shoulder diameter
- 309.4 mm
Classification
- Manufacturer category
- Rolling and Plain Bearings › Super Precision Bearings › Radial Super Precision Bearings › Cylindrical Roller Bearings For Main Spindles
- eCl@ss class
- 23-05-09-01
- UNSPSC
- 31171505
Description
Super precision cylindrical roller bearings NNU49..-S-K-M-SP, non-locating bearing, double row, with tapered bore, taper 1:12, separable, with cage
The same bearing from other manufacturers (1 designations)
Same size and design — suffix notation differs between brands.
FAG
NNU4956-S-K-M-SP
original — this page
equivalent designation
SKF
NNU4956BK/SPW33
This is a dimensional and design equivalent, not the same product. If in doubt, ask us before ordering.
NNU4956-S-K-M-SP
Cylindrical roller bearing
⌀280 × 380 × 100 mm
od EUR 5,582.47net
+ VAT 23% = EUR 6,866.44 gross
This item is brought in to order (about 10 working days) and we sell it to business customers. Open a business account.
Cheaper in larger quantities
| from 5 pcs | EUR 5,359.17 | −4% |
| from 10 pcs | EUR 5,303.34 | −5% |
| from 25 pcs | EUR 5,191.69 | −7% |
| from 50 pcs | EUR 5,080.04 | −9% |
Our own item, temporarily out of stock — write to us for a date.
Shipping within the EU: DHL, GLS, from EUR 13.18 net. Transit time 3–5 business days after dispatch. Shipping and returns →
Buying for a company?
Open a business account →Documentation
Datasheet (PDF)RoHS / REACH compliance declaration (PDF)Opening a document for the first time can take up to a minute while the manufacturer prepares it.