| 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 |