| 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 |