| Bearing number | NNU 4938 BK/SPW33 |
| Size (mm) | 190x260x69 |
| Bore Diameter (mm) | 190 |
| Outer Diameter (mm) | 260 |
| Width (mm) | 69 |
| d | 190 mm |
| D | 260 mm |
| B | 69 mm |
| C | 69 mm |
| b | 8,3 mm |
| r1 min. | 2 mm |
| r2 min. | 2 mm |
| r3 min. | 1 mm |
| r4 min. | 1 mm |
| D1 | 236 mm |
| F | 212 mm |
| K | 3 mm |
| da min. | 200 mm |
| da max | 209 mm |
| Da max. | 250 mm |
| db min | 215 mm |
| ra max. | 2 mm |
| S | 1,1 mm |
| dh | 213 mm |
| Weight | 11 Kg |
| Basic dynamic load rating (C) | 402 kN |
| Basic static load rating (C0) | 880 kN |
| (Grease) Lubrication Speed | 2 800 r/min |
| (Oil) Lubrication Speed | 3 200 r/min |
| Category | Cylindrical Roller Bearing |
| Inventory | 0.0 |
| Minimum Buy Quantity | N/A |
| Weight / Kilogram | 10.97 |
| Product Group | B04270 |
| Bore Profile | Tapered |
| 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 | 190MM Bore; Tapered Bore Profile; 260MM Outside Diameter; 69MM Width; Brass Cage Matetrial; Special Precision; Double Row; Inner Ring - Both Sides Separable; No Snap Ring; Relubricatable; C1-Tight Int |
| UNSPSC | 31171547 |
| Harmonized Tariff Code | 8482.50.00.00 |
| Noun | Bearing |
| Manufacturer Item Number | NNU 4938 BK/SPW33 |
| Weight / LBS | 24.163 |
| Bore | 7.48 Inch | 190 Millimeter |
| Outside Diameter | 10.236 Inch | 260 Millimeter |
| Width | 2.717 Inch | 69 Millimeter |
| r1,2 min. | 2 mm |
| r3,4 min. | 1 mm |
| s max. | 1.1 mm |
| da max. | 209 mm |
| dn | 213 mm |
| Basic dynamic load rating C | 402 kN |
| Basic static load rating C0 | 880 kN |
| Fatigue load limit Pu | 90 kN |
| Attainable speed for grease lubrication | 2800 r/min |
| Attainable speed for oil-air lubrication | 3200 r/min |
| Reference grease quantity Gref | 85 cm³ |
| Static radial stiffness (guideline value) | 5380 N/µm |
| Mass bearing | 11 kg |
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