NN3021 Bearing
Double row cylindrical roller bearing
- Bore d105 mm
- Outer dia. D160 mm
- Width B41 mm
- Weight≈ 2.9 kg
High rigidity and precision: machine-tool spindles, mill rolls.
Technical data
| Bearing designation | NN3021 |
|---|---|
| Type | Double row cylindrical roller bearing |
| Bore d | 105 mm |
| Outer dia. D | 160 mm |
| Width B | 41 mm |
| Weight | ≈ 2.9 kg |
Designation meaning and notes
- NN: double row, ribs on the inner ring.
Dimensions are standard catalogue values; the weight is an approximate calculation. Please confirm before ordering.
Common suffixes for NN3021
| NN3021 K | Tapered bore, taper 1:12 |
|---|---|
| NN3021 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)
105 × 160 × 12 mm
Seal weight: ≈ 0.16 kg
Other common widths: 105 × 160 × 10 mm, 105 × 160 × 15 mm
The seal's inner diameter matches the shaft (105 mm) and its outer diameter matches the housing bore (160 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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