The freewheel is built into the customer housing. This makes compact, space-saving fitting solutions possible.
Features
Internal Freewheels FN are roller freewheels from Suma precision bearing company without bearing support.
The freewheel is built into the customer housing. This makes compact, space-saving f itting solutions possible.
The freewheels FN are used as:
➧Backstops
➧Overrunning Clutches ➧Indexing Freewheels
Nominal torques up to 3 000 Nm. The faces of both sides of the outer ring are provided with grooves for torque transmission.
Bores up to 60 mm.
Application example
Internal freewheel FN 20 as a backstop, on the drive shaft of running gears on a chain conveyor. In normal operation, the drive shaft drives and the freewheel works in freewheeling oper- ation. The freewheel as a backstop prevents the running gears from being able to run backwards uncontrolled in the event of a fault.
Freewheel Size | Nominal torque | Max. speed | Outer ring freewheels/ | Bore d | B | D | E | F | N | P | Weight |
FN8 | 18 | 2 800 | 5 400 | 8 | 20 | 37 | 19 | 30 | 6 | 3,0 | 0,1 |
FN12 | 18 | 2 800 | 5 400 | 12 | 20 | 37 | 19 | 30 | 6 | 3,0 | 0,1 |
FN15 | 50 | 2 500 | 5 100 | 15 | 30 | 47 | 23 | 37 | 7 | 3,5 | 0,3 |
FN20 | 112 | 1 900 | 4 350 | 20 | 36 | 62 | 35 | 50 | 8 | 3,5 | 0,6 |
FN25 | 220 | 1 550 | 3 350 | 25 | 40 | 80 | 40 | 68 | 9 | 4,0 | 1,1 |
FN30 | 410 | 1 400 | 3 050 | 30 | 48 | 90 | 45 | 75 | 12 | 5,0 | 1,6 |
FN35 | 500 | 1 300 | 2 850 | 35 | 53 | 100 | 50 | 80 | 13 | 6,0 | 2,3 |
FN40 | 750 | 1 150 | 2 500 | 40 | 63 | 110 | 55 | 90 | 15 | 7,0 | 3,1 |
FN45 | 1 020 | 1 100 | 2 400 | 45 | 63 | 120 | 60 | 95 | 16 | 7,0 | 3,7 |
FN50 | 1 900 | 950 | 2 050 | 50 | 80 | 130 | 70 | 110 | 17 | 8,5 | 5,3 |
FN55 | 2 000 | 900 | 1 900 | 55 | 80 | 140 | 75 | 115 | 18 | 9,0 | 6,0 |
FN60 | 3 000 | 800 | 1 800 | 60 | 95 | 150 | 80 | 125 | 18 | 9,0 | 8,4 |
The maximum transmissible torque is 2 times the specified nominal torque. See page 14 for determination of selection torque.
Keyway according to DIN 6885, page 1 • Tolerance of keyway width JS10.
Mounting | Lubrication An oil lubrication of the specified quality must be provided. Example for ordering Freewheel size FN 45, standard type: • FN 45 |
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