NN3008 Bearing
Double row cylindrical roller bearing
- Bore d40 mm
- Outer dia. D68 mm
- Width B21 mm
- Weight≈ 0.31 kg
High rigidity and precision: machine-tool spindles, mill rolls.
Technical data
| Bearing designation | NN3008 |
|---|---|
| Type | Double row cylindrical roller bearing |
| Bore d | 40 mm |
| Outer dia. D | 68 mm |
| Width B | 21 mm |
| Weight | ≈ 0.31 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 NN3008
| NN3008 K | Tapered bore, taper 1:12 |
|---|---|
| NN3008 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)
40 × 68 × 7 mm
Seal weight: ≈ 0.024 kg
Other common widths: 40 × 68 × 8 mm, 40 × 68 × 10 mm
The seal's inner diameter matches the shaft (40 mm) and its outer diameter matches the housing bore (68 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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