- Customized application – by varying the number of Locking Elements, size and quantity of
clamping screws, the connection can be adapted to fit most applications concerning surface
pressures, materials, hub/shaft dimensions and available mounting space.
- Transmission of high loads – to increase the transmissible torque and axial forces up to
4 Locking Elements can be used in series.
- Maximum reliability – no matter whether the connection is subjected to static, pulsating,
dynamic or intermittent loads.
- Simple manufacture – shaft and hub are designed without keyway. Apart from this, relatively
large tolerances are admissible.
- Easy adjustability – Locking Elements work without positive connection. So they can
be adjusted at any place to any position by following the simple installation and removal
- Backlash-free – the Locking Element connection is a mechanical shrink fit and will not
wear or loosen in service provided that the maximum transmissible values for the connection
are not exceeded.
- High fatigue strength under alternating torsional stresses – as neither the shaft nor
the hub have grooves the notch effect is minimized and a higher polar section modulus is
given, enabling the use of smaller diameters.
- Simple installation – in comparison to cross-press fits temperature treatments and fitting
are eliminated. Screws have to be tightened with standard tools.
- Easy removal – Locking Elements are self releasing no additional measures or auxiliary
equipment is required.
- Wear and maintenance-free – unlimited lifetime if designed and used correctly.
Mounting of Locking Element
The values for T and Fax, apply to Locking Elements installed in oiled condition.
For shafts and hub bores Ra ≤ 1 μm
Required screw tension force
- for Locking Elements solid: FA = FA´ + F0
- for Locking Elements slit: FA = FA´
Where n-Locking Elements are used one behind the other (series), the following applies to the increase in T und Fax:
- Tn = T1 · m
- Faxn = Fax1 · m
Retaining the values for T and Fax it is possible to reduce FA´ and p when using elements in series:
With 2 / 3 / 4 Locking Elements, m = 1.555 / 1.86 / 2.03