| Bearing number | NNU 4921 B/SPW33 |
| Size (mm) | 105x145x40 |
| Bore Diameter (mm) | 105 |
| Outer Diameter (mm) | 145 |
| Width (mm) | 40 |
| d | 105 mm |
| D | 145 mm |
| B | 40 mm |
| D1 | 130.8 mm |
| F | 118 mm |
| b | 5.5 mm |
| K | 3 mm |
| r1,2 - min. | 1.1 mm |
| s | 1.1 mm |
| da - min. | 111 mm |
| da - max. | 116 mm |
| db - min. | 121 mm |
| Da - max. | 138.5 mm |
| ra - max. | 1 mm |
| dn | 119 mm |
| Basic dynamic load rating - C | 130 kN |
| Basic static load rating - C0 | 260 kN |
| Fatigue load limit - Pu | 30 kN |
| Limiting speed for grease lubrication | 5300 r/min |
| Limiting speed for oil lubrication | 6000 mm/min |
| Gref | 15 cm |
| Category | Cylindrical Roller Bearing |
| Inventory | 0.0 |
| Minimum Buy Quantity | N/A |
| Weight / Kilogram | 2.079 |
| Product Group | B04270 |
| Bore Profile | Straight |
| Cage Material | Brass |
| Precision Class | Special Precision |
| Number of Rows of Rollers | Double Row |
| Separable | Inner Ring - Both Sides |
| Rolling Element | Cylindrical Roller Bearing |
| Profile | Complete with Outer and Inner Ring |
| Snap Ring | No |
| Internal Clearance | C1-Tight |
| Retainer | Yes |
| Relubricatable | Yes |
| Inch - Metric | Metric |
| Other Features | Plain Inner Ring | 3 Rib Outer Ring | High Precision Bearing | Modified Internal Design | Cage on Outer Ring ID |
| Long Description | 105MM Bore; Straight Bore Profile; 145MM Outside Diameter; 40MM Width; Brass Cage Matetrial; Special Precision; Double Row; Inner Ring - Both Sides Separable; No Snap Ring; Relubricatable; C1-Tight In |
| UNSPSC | 31171547 |
| Harmonized Tariff Code | 8482.50.00.00 |
| Noun | Bearing |
| Manufacturer Item Number | NNU 4921 B/SPW33 |
| Weight / LBS | 4.583 |
| Bore | 4.134 Inch | 105 Millimeter |
| Outside Diameter | 5.709 Inch | 145 Millimeter |
| Width | 1.575 Inch | 40 Millimeter |
| r1,2 min. | 1.1 mm |
| s max. | 1.1 mm |
| da min. | 111 mm |
| da max. | 116 mm |
| db min. | 121 mm |
| Da max. | 138.5 mm |
| ra max. | 1 mm |
| Basic dynamic load rating C | 130 kN |
| Basic static load rating C0 | 260 kN |
| Fatigue load limit Pu | 30 kN |
| Attainable speed for grease lubrication | 5300 r/min |
| Attainable speed for oil-air lubrication | 6000 r/min |
| Reference grease quantity Gref | 15 cm³ |
| Static radial stiffness (guideline value) | 3040 N/µm |
| Mass bearing | 2 kg |
