Features
Internal Freewheels FD are sprag freewheels from Suma bearing exporter without an inner ring. The customer s hardened and ground shaft is used as the inner track.
The freewheels FD are used as:
➧Backstops
➧Overrunning Clutches ➧Indexing Freewheels
The standard type and type with P-grinding for increased service life and indexing accuracy do not have bearing support. In the case of the standard type, every second sprag has been be replaced by a cylindrical roller; this freewheel can accept radial forces.
Nominal torques up to 2 400 Nm. The torque is transmitted on the outer ring by press fit.
Application example
Two Internal Freewheels FD 40 CFR of standard type with bearing support as overrunning c lutches in the drive of the transport rollers in a p ackaging distribution unit. In normal opera tion, the transport rollers are driven by means of the freewheels that are working in driving operation. At the withdrawal station, the arriving packages can easily slip off as the drive is overrun by the freewheel (freewheeling oper ation).
Freewheel Size | Type | Nominal t orque | Max. speed | Outer ring freewheels/ | Type | Nominal t orque | Max. speed | Outer ring freewheels/ | bearing support | Load rating of | Type | Nominal t orque | J | B | D | K | Weight |
FD12 | CFH | 11 | 4 225 | 4 250 | CFR | 6 | 4 225 | 4 250 | 7 600 | 4 200 | CFP | 5 | 12 | 16 | 34 | 45 | 0,1 |
FD15 | CFH | 16 | 3 875 | 3 925 | CFR | 8 | 3 875 | 3 925 | 7 800 | 4 200 | CFP | 7 | 15 | 20 | 37 | 50 | 0,1 |
FD20 | CFH | 28 | 3 375 | 3 450 | CFR | 14 | 3 375 | 3 450 | 8 320 | 4 200 | CFP | 12 | 20 | 20 | 42 | 55 | 0,1 |
FD25 | CFH | 48 | 2 900 | 3 050 | CFR | 24 | 2 900 | 3 050 | 10 700 | 5 600 | CFP | 21 | 25 | 20 | 47 | 60 | 0,1 |
FD30 | CFH | 75 | 2 525 | 2 675 | CFR | 36 | 2 525 | 2 675 | 12 900 | 7 000 | CFP | 32 | 30 | 20 | 52 | 65 | 0,1 |
FD40 | CFH | 160 | 1 900 | 2 150 | CFR | 71 | 1 900 | 2 150 | 15 000 | 8 400 | CFP | 71 | 40 | 22 | 62 | 80 | 0,1 |
FD50 | CFH | 260 | 1 475 | 1 775 | CFR | 120 | 1 475 | 1 775 | 18 400 | 11300 | CFP | 120 | 50 | 22 | 72 | 95 | 0,2 |
FD65 | CFH | 430 | 1 200 | 1 550 | CFR | 200 | 1 200 | 1 550 | 21 400 | 14100 | CFP | 210 | 65 | 25 | 90 | 120 | 0,3 |
FD80 | CFH | 650 | 950 | 1 350 | CFR | 300 | 950 | 1 350 | 23 800 | 17800 | CFP | 320 | 80 | 25 | 110 | 140 | 0,6 |
FD 105 | CFH | 2 400 | 800 | 1 175 | CFR | 1 100 | 800 | 1 175 | 48 600 | 45000 | CFP | 1 200 | 105 | 35 | 130 | 165 | 0,7 |
The maximum transmissible torque is 2 times the specified nominal torque. See page 14 for determination of selection torque.
The maximum speed values listed above apply to installation conditions as they are given for Complete Freewheels. If the actual installation conditions are known, higher speeds may be permitted
under certain circumstances.
Mounting | Lubrication |
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