NNU4920 Bearing
Double row cylindrical roller bearing
- Bore d100 mm
- Outer dia. D140 mm
- Width B40 mm
- Weight≈ 1.8 kg
High rigidity and precision: machine-tool spindles, mill rolls.
Technical data
| Bearing designation | NNU4920 |
|---|---|
| Type | Double row cylindrical roller bearing |
| Bore d | 100 mm |
| Outer dia. D | 140 mm |
| Width B | 40 mm |
| Weight | ≈ 1.8 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 NNU4920
| NNU4920 K | Tapered bore, taper 1:12 |
|---|---|
| NNU4920 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)
100 × 140 × 12 mm
Seal weight: ≈ 0.11 kg
Other common widths: 100 × 140 × 10 mm, 100 × 140 × 15 mm
The seal's inner diameter matches the shaft (100 mm) and its outer diameter matches the housing bore (140 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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