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NTN NU2 Series single row cylindrical roller bearing.
NTN NU2 series cylindrical roller bearings have rollers that provide a modified line contact with the cylindrical inner and outer ring raceways, while the rollers are guided by ground ribs on either the inner or outer ring. The cylindrical shape allows the inner ring to have axial movement relative to the outer ring. This is especially important when accommodating thermal expansion, where both rings must be press-fitted.
Features
- Straight inner ring with outer ring and roller assembly
- Radial clearance greater than normal
- Separable plain inner ring, outer ring with two ribs
- Clearance: C3
- Speed Rating: 3600 rpm Limiting (Grease), 4000 rpm Limiting (Oil)
- Temperature Rating: -40 to 120 °C (-40 to 250 °F)
General Information
| Item Name | Cylindrical Roller Bearing |
| Trade Name | NTN |
| Series | nu221 |
General Features
| Type | Standard Cage |
| Net Weight | 9.303 lb |
Design & Construction
| Bore Type | Round |
| Cage Material | Machined Brass |
| Rolling Element Material | Hardened Alloy Steel |
Performance Details
| Dynamic Load Capacity | 201000 N |
| Static Load Capacity | 241000 N |
| Tolerance Class | RBEC 1 (Normal), RBEC 3 (P6) |
Physical Properties
| Bore Diameter | 105 mm |
| Fillet Radius | 2 mm |
| Inner Ring Outside Diameter | 126.8 mm |
| Number of Rows | 1 |
| Outer Ring Inside Diameter | 249.6 mm |
| Outside Diameter | 190 mm |
| Radial Internal Clearance | 3 mm |
| Width | 36 mm |
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