| Bearing number | NN 3008 KTN/SP |
| Size (mm) | 40x68x21 |
| Bore Diameter (mm) | 40 |
| Outer Diameter (mm) | 68 |
| Width (mm) | 21 |
| d | 40 mm |
| D | 68 mm |
| B | 21 mm |
| C | 21 mm |
| b | – mm |
| d1 | 50.6 mm |
| r1 min. | 1 mm |
| r2 min. | 1 mm |
| r3 min. | 0,6 mm |
| r4 min. | 0,6 mm |
| E | 61 mm |
| K | – mm |
| da min. | 45 mm |
| Da min | 62 mm |
| Da max. | 63 mm |
| ra max. | 1 mm |
| S | 1,5 mm |
| dh | 60 mm |
| Weight | 0,3 Kg |
| Basic dynamic load rating (C) | 42,9 kN |
| Basic static load rating (C0) | 56 kN |
| (Grease) Lubrication Speed | 13 000 r/min |
| (Oil) Lubrication Speed | 15 000 r/min |
| Category | Cylindrical Roller Bearing |
| Inventory | 0.0 |
| Minimum Buy Quantity | N/A |
| Weight / Kilogram | 0.32 |
| Product Group | B04270 |
| Bore Profile | Tapered |
| Cage Material | Polymer |
| Precision Class | Special Precision |
| Number of Rows of Rollers | Double Row |
| Separable | Outer 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 | 3 Rib Inner Ring | Plain Outer Ring | High Precision Bearing | Cage on Inner Ring OD |
| Long Description | 40MM Bore; Tapered Bore Profile; 68MM Outside Diameter; 21MM Width; Polymer Cage Matetrial; Special Precision; Double Row; Outer 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 | NN 3008 KTN/SP |
| Weight / LBS | 0.701 |
| Bore | 1.575 Inch | 40 Millimeter |
| Outside Diameter | 2.677 Inch | 68 Millimeter |
| Width | 0.827 Inch | 21 Millimeter |
| r1,2 min. | 1 mm |
| r3,4 min. | 0.6 mm |
| s max. | 1.5 mm |
| Da min. | 62 mm |
| dn | 60 mm |
| Basic dynamic load rating C | 42.9 kN |
| Basic static load rating C0 | 56 kN |
| Fatigue load limit Pu | 6.4 kN |
| Attainable speed for grease lubrication | 13000 r/min |
| Attainable speed for oil-air lubrication | 15000 r/min |
| Reference grease quantity Gref | 1.8 cm³ |
| Static radial stiffness (guideline value) | 890 N/µm |
| Mass bearing | 0.3 kg |
