By visiting this website, you agree to the terms and conditions on the protection of your personal data.

Read more

logo

Unidirectional rolling element couplings

Unidirectional ball bearings are used to transmit torque in one direction, allowing for free relative movement in the other direction.

 

STATEMENT Dimensions


Torque

Mo

d
H7

D L d1 d2 b h b1 h1 t R
mm mm mm mm mm mm mm mm mm mm mm Nm
OŁT 023.1. 8 24r6 8 11 20 - - 2 9 - - 2
OŁT 023.2. 12 35n6 13 18,5 30 4 - 4 13,8 1,5 - 6
OŁT 023.11. 15 35r6 11 21 30 - - 5 16,2 - - 8
OŁT 023.3. 15 42n6 18 24 36 5 - 5 16,2 1,5 - 20
OŁT 023.4. 20 47r6 14 28 42 - - 6 21,6 - - 23
OŁT 023.5. 20 52n6 21 30 45 6 - 6 21,6 1,8 - 50
OŁT 029.25/55A. 25 55+
0,015
17 34 47 - 53,5 5 27,3 - 1,5 80
OŁT 023.6. 25 62n6 24 36,5 52 8 - 8 27 2,3 - 80
OŁT 023.9. 30 62r6 16 40,4 55 - - 8 32 - 55
OŁT 023.7. 30 72r6  27 30 62 10 - 8 32 2,6 - 120
OŁT 023.10. 35 72r6 17 47,4 63 - - 10 37,4 - - 90
OŁT 023.8. 35 80n6 31 48 70 12 - 10 37,4 3,6 - 150
SPS 40 40 80r6 18 53,5 70 - - 12 42,3 - - 120
SP 40 40 90n6 33 54,5 78 12 - 12 42,3 3,6 - 230

 

Their action consists of wedging rollers between the outer ring and the appropriately shaped (so-called “star”) inner ring. The working surfaces of both rings form a self-locking angle. The rollers are individually pressed against the ring raceways by means of springs and tappets, which allows for immediate action, and the “dead angle” resulting only from the elastic deformation of the clutch components is practically zero.


In order to ensure the proper working conditions for the coupling, it is required that the coupling is set by means of radial ball bearings, as the coupling itself is not a bearing.


Unidirectional couplings are not designed to transmit any axial (longitudinal) forces, either in service or during assembly.


As standard, the couplings are designed to operate at a frequency of up to 60 cycles/min. The use of higher frequencies is conditioned by a number of factors such as inertia of rotating masses, lubrication conditions, etc. The use of higher frequencies is conditioned by a number of factors such as the inertia of rotating masses, lubrication conditions, etc.


The service life of the couplings, determined by - 107 cykli, the number of activation cycles, which is an average of 107 cycles, depends on the operating conditions, the nature of the operation (e.g. impact load) and the length of free running.


Lubrication. In conditions of prolonged free running, at peripheral speeds not exceeding 6 m/s, it is recommended to use lubrication of couplings with low viscosity oils in the range from 8.33 cSt to 59.34 cSt at 40°C. At low speeds, low viscosity plastic greases can be used to fill up to 30% of the free space.


No maintenance is required for the clutch other than lubrication.

The operating temperature of the couplings should not exceed 120°C.

Installation conditions: housing H7, shaft h6 h6

Application:

In motor vehicles, agricultural machinery, assemblies and mechanisms, e.g. packaging machines, etc.

 

Delivery status:

Not lubricated.

Protected by maintenance oil, packed in corrosion inhibited anti-corrosion paper.