NN3068 Bearing
Double row cylindrical roller bearing
- Bore d340 mm
- Outer dia. D520 mm
- Width B133 mm
- Weight≈ 99 kg
High rigidity and precision: machine-tool spindles, mill rolls.
Technical data
| Bearing designation | NN3068 |
|---|---|
| Type | Double row cylindrical roller bearing |
| Bore d | 340 mm |
| Outer dia. D | 520 mm |
| Width B | 133 mm |
| Weight | ≈ 99 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 NN3068
| NN3068 K | Tapered bore, taper 1:12 |
|---|---|
| NN3068 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)
340 × 520 × 20 mm
Other common widths: 340 × 520 × 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 (340 mm) and its outer diameter matches the housing bore (520 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