This item is not currently available from our stocks.
Despatch date information is on request.
This item is not currently available from our stocks.
Despatch date information is on request.
RFN-4061-165X290, Ringfeder, Standard series for high torque
Metric, 165, 290
This item is not currently available from our stocks.
Despatch date information is on request.
This item is not currently available from our stocks.
Despatch date information is on request.
What is a shrink disc?
A shrink disc is a mechanical, external shaft–hub connection fitted over a hollow shaft or hub. It consists of tapered rings or sleeves and a series of clamping screws. When the screws are tightened, the tapers move relative to each other, compressing the hollow shaft onto the inner shaft or shaft journal. This creates a strong, concentric, frictional connection capable of transmitting high torques and axial loads.
Shrink discs typically offer:
- High torque and axial load transmission
- Backlash‑free, concentric connection
- No keyways or splines required
- Easy installation and removal
- Reusable design within manufacturer limits
Shrink Discs FAQs
What is the difference between shrink discs and locking assemblies?
Shrink discs are mounted on the outside of a hollow shaft and clamp the hollow shaft onto a solid shaft or journal (outside‑in clamping). Locking assemblies sit inside a hub bore and clamp the hub onto a solid shaft (inside‑out clamping). Both are keyless, frictional shaft–hub connections; the right choice depends on your shaft design.
How do I select the correct shrink disc size?
You’ll need the hollow shaft outside diameter and wall thickness, the solid shaft diameter, required torque (and any axial load), operating speed and available installation space. Shaft and hub materials and tolerances are also important. Provide these details and we can recommend a suitable shrink disc.