NJ340 Bearing
Cylindrical roller bearing
- Bore d200 mm
- Outer dia. D420 mm
- Width B80 mm
- Weight≈ 50 kg
High radial loads: gearboxes, rolling mills, large electric motors.
Technical data
| Bearing designation | NJ340 |
|---|---|
| Type | Cylindrical roller bearing |
| Bore d | 200 mm |
| Outer dia. D | 420 mm |
| Width B | 80 mm |
| Weight | ≈ 50 kg |
Designation meaning and notes
- NJ: one rib on the inner ring; carries axial load in one direction.
Dimensions are standard catalogue values; the weight is an approximate calculation. Please confirm before ordering.
Common suffixes for NJ340
| NJ340 E | Reinforced internal design (higher load capacity) |
|---|---|
| NJ340 ECP | Reinforced internal design, polyamide cage |
| NJ340 ECJ | Reinforced internal design, pressed steel cage |
| NJ340 ECM | Reinforced internal design, brass cage |
| NJ340 EM | Reinforced internal design, brass cage |
| NJ340 M | Machined brass cage |
| NJ340 E C3 | Reinforced internal design (higher load capacity) · Radial clearance larger than normal (for higher operating temperatures) |
| NJ340 EM C3 | Reinforced internal design, brass cage · Radial clearance larger than normal (for higher operating temperatures) |
Click a designation to open it in the bearing finder. Suffix usage can differ slightly between brands.
Matching seal (radial shaft seal)
200 × 420 × 20 mm
Other common widths: 200 × 420 × 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 (200 mm) and its outer diameter matches the housing bore (420 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