RfN 7014
For high peripheral forces
Long 4-piece version, self-centring. Due to the clamping cones, there is no axial displacement.
Long 4-piece version, self-centring. Due to the clamping cones, there is no axial displacement. For high peripheral forces.
The defining feature of our RfN 7014 locking assembly is its ability to transmit substantial peripheral forces reliably. This is down to the use of long, flat cones for the transmission of high torques and axial forces. The multi-piece design ensures that the locking assembly, shaft and hub all maintain their position relative to each other during assembly without any axial displacement occurring. This helps to ensure that the shaft and hub are only subjected to compressive loads, providing additional safety compared to 3-piece types.
This locking assembly is suitable for various applications, particularly those that involve the use of heavy belt pulleys, heavy machinery, couplings and rope pulleys. In such cases, the RfN 7014 locking assembly ensures that high forces and torques can be transmitted reliably.
Product features
- Large transmissible peripheral forces – the long, flat cones enable the highest possible torques and axial forces to be transmitted with a single 7014 locking assembly.
- Maximum reliability – the RfN 7014 locking assemblies are centred as a result of the flat cones and the relatively wide design (long guide lengths). During assembly, the locking assembly, shaft and hub all remain correctly positioned in relation to each other. The shaft and hub are only compression-loaded, ensuring additional safety compared to 3-piece versions.
Example applications
- Heavy belt pulleys
- Heavy machinery
- Couplings
- Rope pulleys
Locking assembly installation
The values for T, Fax, pW and pN apply to oil-lubricated, installed locking assemblies.
Surface finishes
For shaft and hub bore Ra ≤ 3.2 μm
Tolerances
We recommend the following installation tolerances
Shaft: k9-h9; Hub: N9-H9
Arrangement of several RfN 7014 locking assemblies
A maximum of 2 locking assemblies can be installed directly one after the other. In this case, the transmission values from the table need to be doubled.
Changing the screw tightening torques
It is possible to reduce the contact pressure and the transmission values by lowering the screw tightening torque. The permissible lower limit is calculated by multiplying the TA values by 0.8. There is a direct relationship between the values of T, TA , Fax, pW and pN.
