Standard series – this range is the most popular, being used in
most applications. High transmission values are possible and by varying the
screw tightening torque the Shrink disc can be adapted to the design
specification.
Characteristics
Shrink discs are the modern method for creating a mechanical
shrink fit. The shrink disc consists of either one or two thrust rings with
tapered bores and a mating tapered inner ring. By tightening locking screws the
thrust rings are drawn together compressing the inner ring and applying pressure
to the outside of the hub clamping it to the shaft. Being positioned around the
hub there is only one interface transmitting the loads giving the shrink disc
method distinct advantages such as offering the possibility of very concentric
and well balanced connections that are suited to high speed applications.
Traditional shrink fits require complicated calculations, close machining
tolerances and fine surface finishes, they also need considerable effort with
mounting and removal. The shrink disc connection has none of these
disadvantages and is better than any of the other usual connection methods with
regard to fatigue strength under alternating torsional stress.
Unlimited range
of applications – RINGFEDER®
Shrink Disc connections are suitable for securing all types of hubs onto
shafts and axles. Replacing traditional shrink fits, keys and polygon
connections, splined shafts etc. So cog wheels and sprockets, levers,
lifters, cam discs, pulleys or brake discs, balance wheels, couplings,
slip on gear mechanisms, flanges, pulley wheels and rotors can be attached
absolutely reliable.
Standard design – for high
transmission values.
Compensation of
small tolerance errors – please
contact our engineers.
Maximum
reliability
– suitable for static, dynamic and impact loads.
Slitted inner
ring
– low forces and pressures on hub and shaft.
Simplified
manufacture
– only plain shaft and bore diameters with easily achieved surface finish
and tolerances are required.
Easy replacement – The RINGFEDER® shrink disc is free from any form
fit.
Easy mounting – no steps,
keyways, splines are required, therefore hubs can be located and locked at
any point or angle on the shaft. RINGFEDER®
Shrink Discs use standard screws tightened with standard tools. No
additional machining or fitting work is required.
Short
installation time - cost savings particularly in serial production.
Easy removal – after
loosening the locking screws, the RINGFEDER®
Shrink Disc will self release and the hub will move freely on the shaft.
Low
susceptibility to contamination – when the locking screws are
tightened the functional contact surfaces are pressed firmly together and
prevent the ingress of dirt and moisture.
Surface
finishes
For shaft diameter dw:
Peak-to-valley height
Ra ? 3,2 ?m.
Tolerances
For shaft see table at above.
