Cylindrical roller bearing
1.less coefficient of friction
2.high limiting speed
3.competitive price
4.high precision
Cylindrical roller bearing:
| Bearing No. | Boundary dimensions | Basic load rating(kN) | Limiting speeds | ||||||
| mm | Dynamic | Static | rpm | ||||||
| d | D | B | rs min | rs1 min | Cr | Cor | Grease | Oil | |
| NF303E | 17 | 47 | 14 | 1 | 0.6 | 24.65 | 21.16 | 13000 | 15000 |
| NF304E | 20 | 52 | 15 | 1.1 | 0.6 | 23.1 | 19.2 | 14000 | 17000 |
| NF305E | 25 | 62 | 17 | 1.1 | 1.1 | 38.5 | 35.8 | 9000 | 12000 |
| NF306E | 30 | 72 | 19 | 1.1 | 1.1 | 49.2 | 48.2 | 8000 | 10000 |
| NF307E | 35 | 80 | 21 | 1.5 | 1.1 | 62 | 63.2 | 7000 | 9000 |
| NF308E | 40 | 90 | 23 | 1.5 | 1.5 | 76.8 | 77.8 | 6300 | 8000 |
| NF309E | 45 | 100 | 25 | 1.5 | 1.5 | 93 | 98 | 5600 | 7000 |
| NF310E | 50 | 110 | 27 | 2 | 2 | 105 | 112 | 5300 | 6700 |
| NF311E | 55 | 120 | 29 | 2 | 2 | 128 | 138 | 4800 | 6000 |
| NF312E | 60 | 130 | 31 | 2.1 | 2.1 | 142 | 155 | 4500 | 5600 |
| NF313E | 65 | 140 | 33 | 2.1 | 2.1 | 170 | 188 | 4000 | 5000 |
| NF314E | 70 | 150 | 35 | 2.1 | 2.1 | 195 | 220 | 3800 | 4800 |
| NF315E | 75 | 160 | 37 | 2.1 | 2.1 | 228 | 260 | 3600 | 4500 |
Cylindrical roller bearing are in many designs,dimension series and sizes.Bearings with a cage can accomodate heavy radial loads and operate at high speeds.Full complement bearings are suitable for very heavy radial loads at moderate speeds.This type of bearings is separable.
As their rollers lineary come into contact with inner ring and outer ring with less coefficient of friction,these bearings have very good capacity of radial load,suitable for electric motors,automobiles,transmission shafts,gear shafts and so on.Double row cylindrical roller bearings are good at the spindles of machine tools.
