NNU4948 Bearing
Double row cylindrical roller bearing
- Bore d240 mm
- Outer dia. D320 mm
- Width B80 mm
- Weight≈ 17 kg
High rigidity and precision: machine-tool spindles, mill rolls.
Technical data
| Bearing designation | NNU4948 |
|---|---|
| Type | Double row cylindrical roller bearing |
| Bore d | 240 mm |
| Outer dia. D | 320 mm |
| Width B | 80 mm |
| Weight | ≈ 17 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 NNU4948
| NNU4948 K | Tapered bore, taper 1:12 |
|---|---|
| NNU4948 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)
240 × 320 × 20 mm
Other common widths: 240 × 320 × 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 (240 mm) and its outer diameter matches the housing bore (320 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