NNU4940 Bearing
Double row cylindrical roller bearing
- Bore d200 mm
- Outer dia. D280 mm
- Width B80 mm
- Weight≈ 15 kg
High rigidity and precision: machine-tool spindles, mill rolls.
Technical data
| Bearing designation | NNU4940 |
|---|---|
| Type | Double row cylindrical roller bearing |
| Bore d | 200 mm |
| Outer dia. D | 280 mm |
| Width B | 80 mm |
| Weight | ≈ 15 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 NNU4940
| NNU4940 K | Tapered bore, taper 1:12 |
|---|---|
| NNU4940 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)
200 × 280 × 15 mm
Seal weight: ≈ 0.54 kg
Other common widths: 200 × 280 × 12 mm, 200 × 280 × 20 mm
The seal's inner diameter matches the shaft (200 mm) and its outer diameter matches the housing bore (280 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.
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