Internal Freewheels Fdfd20 Backstop with Sprags
Data Sheet
| Item |
FD |
| Material |
GCr15 |
| Outer Diameter |
34-130 mm |
| Bore Size |
12-105 mm |
| Weight |
0.1-0.7 kg |
| Width |
16-35 mm |
| Precision |
P0 |
| Delivery Time |
7-10days |
| Application |
Gearbox,reducer,other machines |
Internal Freewheels FD
for press fit on the outer ring
with sprags, available in three types
Features
Internal Freewheels FD are sprag freewheels 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.
| Freewheel Size |
Type |
Nominal t orque
MN
Nm |
Max. speed
Inner ring freewheels/
overruns min-1 |
Outer ring freewheels/
overruns min-1 |
Type |
Nominal t orque
MN
Nm |
Max. speed
Inner ring freewheels/
overruns min-1 |
Outer ring freewheels/
overruns min-1 |
bearing support
dynamic C
N |
Load rating of
static
C0
N |
Type |
Nominal t orque
MN
Nm |
J
mm |
B
mm |
D
mm |
K
mm |
Weight
kg |
| FD 12 |
CFH |
11 |
4 225 |
4 250 |
CFR |
6 |
4 225 |
4 250 |
7 600 |
4 200 |
CFP |
5 |
12 |
16 |
34 |
45 |
0,1 |
| FD 15 |
CFH |
16 |
3 875 |
3 925 |
CFR |
8 |
3 875 |
3 925 |
7 800 |
4 200 |
CFP |
7 |
15 |
20 |
37 |
50 |
0,1 |
| FD 20 |
CFH |
28 |
3 375 |
3 450 |
CFR |
14 |
3 375 |
3 450 |
8 320 |
4 200 |
CFP |
12 |
20 |
20 |
42 |
55 |
0,1 |
| FD 25 |
CFH |
48 |
2 900 |
3 050 |
CFR |
24 |
2 900 |
3 050 |
10 700 |
5 600 |
CFP |
21 |
25 |
20 |
47 |
60 |
0,1 |
| FD 30 |
CFH |
75 |
2 525 |
2 675 |
CFR |
36 |
2 525 |
2 675 |
12 900 |
7 000 |
CFP |
32 |
30 |
20 |
52 |
65 |
0,1 |
| FD 40 |
CFH |
160 |
1 900 |
2 150 |
CFR |
71 |
1 900 |
2 150 |
15 000 |
8 400 |
CFP |
71 |
40 |
22 |
62 |
80 |
0,1 |
| FD 50 |
CFH |
260 |
1 475 |
1 775 |
CFR |
120 |
1 475 |
1 775 |
18 400 |
11 300 |
CFP |
120 |
50 |
22 |
72 |
95 |
0,2 |
| FD 65 |
CFH |
430 |
1 200 |
1 550 |
CFR |
200 |
1 200 |
1 550 |
21 400 |
14 100 |
CFP |
210 |
65 |
25 |
90 |
120 |
0,3 |
| FD 80 |
CFH |
650 |
950 |
1 350 |
CFR |
300 |
950 |
1 350 |
23 800 |
17 800 |
CFP |
320 |
80 |
25 |
110 |
140 |
0,6 |
| FD 105 |
CFH |
2 400 |
800 |
1 175 |
CFR |
1 100 |
800 |
1 175 |
48 600 |
45 000 |
CFP |
1 200 |
105 |
35 |
130 |
165 |
0,7 |
Application example
Two Internal Freewheels FD 40 CFR of standard type with bearing support as overrunning
clutches in the drive of the transport rollers in a packaging distribution unit. In normal oper ation, 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 operation).
Mounting
Internal freewheels FD in type standard and type with P-grinding are without bearing support.
Concentric alignment of inner and outer ring must be provided by the customer. The permissible run out (T.I.R.) must be observed. The torque is transmitted on the outer ring by
press fit. In order to transmit the torques specified in the table, the outer ring must be accommodated in a housing with an external diameter K. The housing is made of steel or grey
cast iron in minimum quality GG-20. When using other housing materials or smaller external
diameters, we urge you to contact us regarding the transmissible torque.The tolerance of the housing bore D must be ISO P6.
The permissible operating temperature of thefreewheel is - 40°C to 80°C.
Lubrication
An oil lubrication of the specified quality must be provided.
Example for ordering
Freewheel size FD 12, standard type:
? FD 12 CFH
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