Internal Freewheels ZZ 2RS
for press fit on the outer ring
with sprags, bearing support and sealing
Features
Internal Freewheels ZZ 2RS are sprag freewheels with bearing support and ball bearing properties. The freewheels are supplied grease-filled for normal operating conditions.
The freewheel is built into the customer housing. This makes compact, space-saving
fitting solutions possible. The freewheels ZZ 2RS are used as:
Backstops
Overrunning Clutches
Indexing Freewheels
Nominal torques up to 325 Nm. The torque is transmitted on the inner ring and/or on the
outer ring by press fit or keyway connection. Bores up to 40 mm.
| Freewheel Size |
Nominal torque |
|
Maximum speed min-1 |
bearing support dynamic C |
Load rating of |
|
Bore d |
|
B |
|
D |
|
K |
|
Weight |
| MN |
N |
static |
mm |
mm |
mm |
mm |
kg |
| Nm |
|
C0 |
|
|
|
|
|
| |
|
N |
|
|
|
|
|
| ZZ 8 2RS* |
|
2,5 |
15 000 |
3 300 |
|
860 |
|
8 |
|
9 |
|
22 |
|
27 |
0,02 |
| ZZ 12 2RS |
|
9,3 |
10 000 |
6 100 |
|
2 800 |
|
12 |
|
14 |
|
32 |
|
39 |
0,05 |
| ZZ 15 2RS |
|
17,0 |
8 400 |
7 400 |
|
3 400 |
|
15 |
|
16 |
|
35 |
|
42 |
0,07 |
| ZZ 17 2RS |
|
30,0 |
7 350 |
7 900 |
|
3 800 |
|
17 |
|
17 |
|
40 |
|
51 |
0,09 |
| ZZ 20 2RS |
|
50,0 |
6 000 |
9 400 |
|
4 500 |
|
20 |
|
19 |
|
47 |
|
58 |
0,15 |
| ZZ 25 2RS |
|
85,0 |
5 200 |
10 700 |
|
5 500 |
|
25 |
|
20 |
|
52 |
|
63 |
0,18 |
| ZZ 30 2RS |
|
138,0 |
4 200 |
11 700 |
|
6 500 |
|
30 |
|
21 |
|
62 |
|
73 |
0,27 |
| ZZ 35 2RS |
|
175,0 |
3 600 |
12 600 |
|
7 300 |
|
35 |
|
22 |
|
72 |
|
85 |
0,40 |
| ZZ 40 2RS |
|
325,0 |
3 000 |
15 500 |
|
12 300 |
|
40 |
|
27 |
|
80 |
|
94 |
0,60 |
Mounting
The torque is transmitted on the inner and 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 N6 and the tolerance of the shaft must be ISO n6. The permissible operating temperature of the
freewheel is +5°C to +60°C. Please contact us if the temperature is different to the given values.
Lubrication
The freewheels are supplied grease-filled and
with 2 RS seals.
Example for ordering
Freewheel size ZZ 17 2RS, standard type:
? ZZ 17 2RS
Internal Freewheels ZZ 2RS
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