NF45 Roller Ramp One Way Freewheel Clutches Backstop Bearing Cam Clutch
Type NF is a roller type freewheel non-bearing supported. Bearings are required to support axial and radial loads. Lubrication and sealing must also be provided by the installation.
Standard lubrication is oil. Nominal outside diameter is a standard ball bearing dimension. A typical arrangement is to install this type alongside a bearing with the same housing tolerances, as shown on the following page. The inner race is keyed to the shaft. The outer race has a positive n6 tolerance to give a press fit in a H7* housing. Additional side notches provide for positive torque transmission.
If the housing tolerance is to K6*, use of the notches is not necessary, but the housing must be strong enough to not expand after assembly.
NF Series Roller Ramp One Way Freewheel Clutches Specifications:
Type | Bore sizes | Dimension(mm) | Max. Torque (Nm) | Max. Overrunning Speed (rpm) | Net Weight (kg) | |||||||
d | Dh6 | L | D5 | D6 | t | r | r1 | Inner Race | Outer Race | |||
NF8 | 8 | 37 | 20 | 30 | 20 | 3 | 1.0 | 1.5 | 16 | 5000 | 6000 | 0.1 |
NF12 | 12 | 37 | 20 | 30 | 20 | 3 | 1.0 | 1.5 | 16 | 5000 | 6000 | 0.1 |
NF15 | 15 | 47 | 30 | 37 | 26 | 3.5 | 1.5 | 1.5 | 62 | 4500 | 5400 | 0.3 |
NF20 | 20 | 62 | 36 | 52 | 37 | 3.5 | 2.0 | 2.0 | 150 | 3000 | 3600 | 0.6 |
NF25 | 25 | 80 | 40 | 68 | 49 | 4 | 2.5 | 2.0 | 200 | 2200 | 2600 | 1.1 |
NF30 | 30 | 90 | 48 | 75 | 52.5 | 5 | 2.5 | 2.0 | 400 | 1800 | 2100 | 1.6 |
NF35 | 35 | 100 | 53 | 80 | 58 | 6 | 2.5 | 2.5 | 530 | 1600 | 1950 | 2.3 |
NF40 | 40 | 110 | 63 | 90 | 62 | 7 | 3.0 | 2.5 | 880 | 1250 | 1700 | 3.1 |
NF45 | 45 | 120 | 63 | 95 | 69 | 7 | 3.0 | 2.5 | 1200 | 1100 | 1500 | 3.7 |
NF50 | 50 | 130 | 80 | 110 | 82 | 8.5 | 3.5 | 3.0 | 1900 | 850 | 1300 | 5.4 |
NF55 | 55 | 140 | 80 | 115 | 83 | 9 | 3.5 | 3.5 | 2000 | 800 | 1200 | 6.1 |
NF60 | 60 | 150 | 95 | 125 | 93.5 | 9 | 3.5 | 3.5 | 3400 | 700 | 1100 | 8.5 |
NF70 | 70 | 170 | 110 | 140 | 106 | 9 | 3.5 | 3.5 | 4700 | 620 | 900 | 13 |
NF80 | 80 | 190 | 125 | 160 | 122 | 9 | 4.0 | 3.5 | 8000 | 550 | 800 | 18 |
NF90 | 90 | 215 | 140 | 180 | 133 | 11.5 | 4.0 | 4.0 | 13800 | 480 | 700 | 25.3 |
NF100 | 100 | 260 | 150 | 210 | 157 | 14.5 | 4.0 | 4.0 | 15700 | 400 | 600 | 42.1 |
NF130 | 130 | 300 | 180 | 240 | 188 | 17 | 5.0 | 5.0 | 27800 | 300 | 480 | 65 |
NF150 | 150 | 320 | 180 | 260 | 205 | 17 | 5.0 | 5.0 | 35500 | 250 | 400 | 95 |