N 1008 KTN/SP
Single row cylindrical roller bearingSingle row cylindrical roller bearings are designed to accommodate high to very high radial loads in combination with medium to high speeds. The SKF assortment includes many designs and variants, such as standard, full complement and high capacity bearings. Depending on the configuration of the outer and inner rings, the bearings are available in locating as well as non-locating designs.
- High to very high radial load carrying capacity
- Low friction
- Long service life
Description
Dimensions
| d | 40 mm | Bore diameter |
|---|---|---|
| D | 68 mm | Outside diameter |
| B | 15 mm | Width |
| d1 | 50.6 mm | Shoulder diameter inner ring |
| E | 61 mm | Raceway diameter outer ring |
| r1,2 | min. 1 mm | Chamfer dimension outer ring |
| r3,4 | min. 0.6 mm | Chamfer dimension inner ring (bearing with tapered bore) |
| s | max. 2 mm | Permissible axial displacement from the normal position of one bearing ring relative to the other (all) |
Tapered bore, taper 1:12 | ||
Abutment dimensions
| da | min. 45 mm | Abutment diameter shaft |
|---|---|---|
| Da | min. 62 mm | Abutment diameter housing |
| Da | max. 63 mm | Abutment diameter housing |
| ra | max. 1 mm | Fillet radius |
| dn | 60 mm | Oil nozzle position (not for variants with TNHA cage) |
Calculation data
| Basic dynamic load rating | C | 25.1 kN |
|---|---|---|
| Basic static load rating | C0 | 28 kN |
| Fatigue load limit | Pu | 3.2 kN |
| Attainable speed for grease lubrication | 15 000 r/min | |
| Attainable speed for oil-air lubrication | 17 000 r/min | |
| Reference grease quantity | Gref | 2.3 cm³ |
| Axial stiffness for preload B (sets of two brgs back-to-back or face-to-face) | 450 N/µm |
Mass
| Mass bearing | 0.19 kg |
Tolerances and clearances
Product details
Principles of bearing selection and application
- Chamfer dimensions
- Seat tolerances for standard conditions: shafts, housings
- Values for ISO tolerance classes: shafts, housings
- Speed dependent initial grease fill → Initial grease fill
