NU221 Bearing
Cylindrical roller bearing
- Bore d105 mm
- Outer dia. D190 mm
- Width B36 mm
- Weight≈ 4.2 kg
High radial loads: gearboxes, rolling mills, large electric motors.
Technical data
| Bearing designation | NU221 |
|---|---|
| Type | Cylindrical roller bearing |
| Bore d | 105 mm |
| Outer dia. D | 190 mm |
| Width B | 36 mm |
| Weight | ≈ 4.2 kg |
Designation meaning and notes
- NU: two ribs on the outer ring, inner ring without ribs; the shaft can move axially.
Dimensions are standard catalogue values; the weight is an approximate calculation. Please confirm before ordering.
Common suffixes for NU221
| NU221 E | Reinforced internal design (higher load capacity) |
|---|---|
| NU221 ECP | Reinforced internal design, polyamide cage |
| NU221 ECJ | Reinforced internal design, pressed steel cage |
| NU221 ECM | Reinforced internal design, brass cage |
| NU221 EM | Reinforced internal design, brass cage |
| NU221 M | Machined brass cage |
| NU221 E C3 | Reinforced internal design (higher load capacity) · Radial clearance larger than normal (for higher operating temperatures) |
| NU221 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)
105 × 190 × 12 mm
Seal weight: ≈ 0.27 kg
Other common widths: 105 × 190 × 10 mm, 105 × 190 × 15 mm
The seal's inner diameter matches the shaft (105 mm) and its outer diameter matches the housing bore (190 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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