| Bearing number | NJ 311 ECP |
| Size (mm) | 120x55x29 |
| Bore Diameter (mm) | 120 |
| Outer Diameter (mm) | 55 |
| Width (mm) | 29 |
| d | 55 mm |
| D | 120 mm |
| B | 29 mm |
| d1 | 77.5 mm |
| D1 | 100.3 mm |
| F | 70.5 mm |
| r1,2 - min. | 2 mm |
| r3,4 - min. | 2 mm |
| s | 2 mm |
| da - min. | 65 mm |
| da - max. | 68 mm |
| db - min. | 80 mm |
| Da - max. | 109.2 mm |
| ra - max. | 2 mm |
| Basic dynamic load rating - C | 156 kN |
| Basic static load rating - C0 | 143 kN |
| Fatigue load limit - Pu | 18.6 kN |
| Reference speed | 6000 r/min |
| Limiting speed | 7000 r/min |
| Calculation factor - kr | 0.15 |
| Category | Cylindrical Roller Bearing |
| Inventory | 0.0 |
| Minimum Buy Quantity | N/A |
| Weight / Kilogram | 1.534 |
| Product Group | B04144 |
| Bore Profile | Straight |
| Cage Material | Polymer |
| Precision Class | RBEC 1 | ISO P0 |
| Number of Rows of Rollers | Single Row |
| Separable | Inner Ring - One Side |
| Rolling Element | Cylindrical Roller Bearing |
| Profile | Complete with Outer and Inner Ring |
| Snap Ring | No |
| Internal Clearance | C0-Medium |
| Retainer | Yes |
| Relubricatable | Yes |
| Inch - Metric | Metric |
| Other Features | High Capacity | 1 Rib Inner Ring | 2 Rib Outer Ring | Cage on Outer Ring ID |
| Long Description | 55MM Bore; Straight Bore Profile; 120MM Outside Diameter; 29MM Width; Polymer Cage Matetrial; RBEC 1 | ISO P0; Single Row; Inner Ring - One Side Separable; No Snap Ring; Relubricatable; C0-Medium Inte |
| UNSPSC | 31171547 |
| Harmonized Tariff Code | 8482.50.00.00 |
| Noun | Bearing |
| Manufacturer Item Number | NJ 311 ECP |
| Weight / LBS | 3.378 |
| Bore | 2.165 Inch | 55 Millimeter |
| Outside Diameter | 4.724 Inch | 120 Millimeter |
| Width | 1.142 Inch | 29 Millimeter |
| bore diameter: | 55 mm |
| precision rating: | RBEC 1 (ISO Class Normal) |
| outside diameter: | 120 mm |
| maximum rpm: | 7000 RPM |
| overall width: | 29 mm |
| bearing material: | Steel |
| flanges: | (2) Outer Ring, (1) Inner Ring |
| cage material: | Polyamide |
| bore type: | Straight |
| finish/coating: | Uncoated |
| number of rows: | 1 |
| closure type: | Open |
| internal clearance: | C0 |
| application: | Piston Type Machines, Rolling Mills, Spindles/Machine Tools |
| ring separation: | Separable Ring |
| outer ring width: | 29 mm |
| operating temperature range: | Maximum of +300 °F |
| fillet radius: | 2 mm |
| dynamic load capacity: | 156 kN |
| series: | NJ3 |
| static load capacity: | 143 kN |
| d1 ≈ | 77.5 mm |
| D1 ≈ | 100.3 mm |
| r1,2 min. | 2 mm |
| r3,4 min. | 2 mm |
| s max. | 2 mm |
| da min. | 65 mm |
| da max. | 68 mm |
| db min. | 80 mm |
| Da max. | 109.2 mm |
| ra max. | 2 mm |
| Basic dynamic load rating C | 156 kN |
| Basic static load rating C0 | 143 kN |
| Fatigue load limit Pu | 18.6 kN |
| Calculation factor kr | 0.15 |
| Limiting value e | 0.2 |
| Axial load factor Y | 0.6 |
| Mass bearing | 1.5 kg |
