Changzhou Suma Precision Machinery Co., Ltd
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NFR20 Roller Clutch Bearing
Features
Type NFR is a bearing supported roller type freewheelwithout any sealing. Lubrication and sealing must be
provided by the installation. Standard lubrication is oil.Size 8 to 20 units use steel on steel bearing support
from the inner race. Above size 25, two 160.. series ball bearings are used, giving a higher overrunning speed
capacity. A typical arrangement is shown overleaf.
The inner race is keyed to the shaft. The outer race has a positive n6 tolerance to give a press fit in a housing to H7.Additional side notches provide for positive torque transmission.The housing must be strong enough to not
expand after assembly.
Dimensions and Capacities
| Type | Size | Overrunning speeds | Weight | |||||||||||
|
NFR (ANR-ANG) | dH7 (mm) | TKN1 (Nm ) | Nimax2) (min-1) | Namax3) (min-1) | Dn6 (mm) | D2 (mm) | D4 (mm) | L (mm) | I (mm) | t (mm) | bH11 (mm) | r (mm) | r1 (mm) |
(kg) |
| 8 | 20 | 1000 | 1000 | 37 | 20 | 30 | 20 | 3 | 6 | 1 | 1.5 | 0.1 | ||
| 12 | 20 | 1000 | 1000 | 37 | 20 | 30 | 20 | 3 | 6 | 1 | 1.5 | 0.1 | ||
| 15 | 78 | 850 | 850 | 47 | 26 | 37 | 30 | 3.5 | 7 | 1.5 | 1.5 | 0.3 | ||
| 20 | 188 | 650 | 650 | 62 | 37 | 52 | 36 | 3.5 | 8 | 2 | 2 | 0.6 | ||
| 25 | 250 | 2100 | 3600 | 80 | 40 | 68 | 40 | 0.2 | 4 | 9 | 2.5 | 2 | 1.2 | |
| 30 | 500 | 1700 | 3200 | 90 | 45 | 75 | 48 | 0.2 | 5 | 12 | 2..5 | 2 | 1.8 | |
| 35 | 663 | 1550 | 3000 | 100 | 50 | 80 | 53 | 1.2 | 6 | 13 | 2.5 | 2.5 | 2.4 | |
| 40 | 1100 | 1150 | 2600 | 110 | 55 | 90 | 63 | 2.2 | 7 | 15 | 3 | 2.5 | 3.3 | |
| 45 | 1500 | 1000 | 2400 | 120 | 60 | 95 | 63 | 2.2 | 7 | 16 | 3 | 2.5 | 4.0 | |
| 50 | 2375 | 800 | 2150 | 130 | 70 | 110 | 80 | 2.7 | 8.5 | 17 | 3.5 | 3 | 5.7 | |
| 55 | 2550 | 750 | 2000 | 140 | 75 | 115 | 80 | 4.2 | 9 | 18 | 3.5 | 3 | 6.5 | |
| 60 | 4250 | 650 | 1900 | 150 | 80 | 125 | 95 | 3.2 | 9 | 18 | 3.5 | 3.5 | 8.9 | |
| 70 | 5875 | 550 | 1750 | 170 | 90 | 140 | 110 | 1.1 | 9 | 20 | 3.5 | 3.5 | 13.5 | |
| 80 | 10000 | 500 | 1600 | 190 | 105 | 160 | 125 | 0 | 9 | 20 | 4 | 3.5 | 19.0 | |
| 90 | 17250 | 450 | 1450 | 215 | 120 | 180 | 140 | 0.6 | 11.5 | 24 | 4 | 4 | 27.2 | |
| 100 | 79625 | 350 | 1250 | 260 | 140 | 210 | 150 | 2.6 | 14.5 | 28 | 4 | 4 | 44.5 | |
| 130 | 34750 | 250 | 1000 | 300 | 160 | 240 | 180 | 2 | 17.5 | 32 | 5 | 5 | 68.0 | |
Mounting and Coupling
Pictures