| Bearing number | 6311-2ZNR |
| Size (mm) | 55x120x29 |
| Bore Diameter (mm) | 55 |
| Outer Diameter (mm) | 120 |
| Width (mm) | 29 |
| d | 55 mm |
| D | 120 mm |
| B | 29 mm |
| C | 4,06 mm |
| b | 3,1 mm |
| d1 | 75,3 mm |
| f | 2,82 mm |
| r0 max. | 0.6 mm |
| r1 min. | 2 mm |
| r2 min. | 2 mm |
| D2 | 104 mm |
| D3 | 115.21 mm |
| D4 | 129.7 mm |
| ba min. | 3.5 mm |
| Ca max. | 6.88 mm |
| da min. | 66 mm |
| da max | 75,2 mm |
| Da max. | 109 mm |
| Db min. | 131 mm |
| ra max. | 2 mm |
| Weight | 1,45 Kg |
| Basic dynamic load rating (C) | 74,1 kN |
| Basic static load rating (C0) | 45 kN |
| Fatigue load limit (Pu) | 1,9 |
| Reference speed | 12000 r/min |
| Limiting speed | 8000 r/min |
| Calculation factor (f0) | 13 |
| Category | Single Row Ball Bearing |
| Inventory | 0.0 |
| Minimum Buy Quantity | N/A |
| Weight / Kilogram | 1.49 |
| Product Group | B00308 |
| Enclosure | 2 Metal Shields |
| Precision Class | ABEC 1 | ISO P0 |
| Maximum Capacity / Filling Slot | No |
| Rolling Element | Ball Bearing |
| Snap Ring | Yes |
| Internal Special Features | No |
| Cage Material | Steel |
| Internal Clearance | C0-Medium |
| Inch - Metric | Metric |
| Long Description | 55MM Bore; 120MM Outside Diameter; 29MM Outer Race Width; 2 Metal Shields; Ball Bearing; ABEC 1 | ISO P0; No Filling Slot; Yes Snap Ring; No Internal Special Features; C0-Medium Internal Clearance; St |
| Other Features | Deep Groove | With Snap Ring |
| UNSPSC | 31171504 |
| Harmonized Tariff Code | 8482.10.50.68 |
| Noun | Bearing |
| Keyword String | Ball |
| Manufacturer Item Number | 6311-2ZNR |
| Weight / LBS | 3.2509 |
| Outer Race Width | 1.142 Inch | 29 Millimeter |
| Bore | 2.165 Inch | 55 Millimeter |
| Outside Diameter | 4.724 Inch | 120 Millimeter |
| Inner Race Width | 0 Inch | 0 Millimeter |
| d1 ≈ | 75.34 mm |
| D2 ≈ | 103.7 mm |
| r1,2 min. | 2 mm |
| da max. | 75.2 mm |
| Basic dynamic load rating C | 74.1 kN |
| Basic static load rating C0 | 45 kN |
| Fatigue load limit Pu | 1.9 kN |
| Calculation factor kr | 0.03 |
| Calculation factor f0 | 13 |
| Mass bearing | 1.46 kg |
| Snap ring | SP 120 |
