NNU4956 Bearing
Double row cylindrical roller bearing
- Bore d280 mm
- Outer dia. D380 mm
- Width B100 mm
- Weight≈ 32 kg
High rigidity and precision: machine-tool spindles, mill rolls.
Technical data
| Bearing designation | NNU4956 |
|---|---|
| Type | Double row cylindrical roller bearing |
| Bore d | 280 mm |
| Outer dia. D | 380 mm |
| Width B | 100 mm |
| Weight | ≈ 32 kg |
Designation meaning and notes
- NNU: double row, ribs on the outer ring.
Dimensions are standard catalogue values; the weight is an approximate calculation. Please confirm before ordering.
Common suffixes for NNU4956
| NNU4956 K | Tapered bore, taper 1:12 |
|---|---|
| NNU4956 KTN | Tapered bore, taper 1:12 · Polyamide cage |
Click a designation to open it in the bearing finder. Suffix usage can differ slightly between brands.
Matching seal (radial shaft seal)
280 × 380 × 20 mm
Other common widths: 280 × 380 × 15 mm
Seals this size are often made to order; send us the housing size and we'll confirm together.
The seal's inner diameter matches the shaft (280 mm) and its outer diameter matches the housing bore (380 mm); the width depends on the space in the housing. NBR (double lip, TC type) is recommended for general use and FKM (Viton) for high temperatures.
Quote for bearing and seal