Press fit design: Torque Limiters and Safety Couplings SK
Torque limiter with press fit design series SK5
Taking
up the challenge for greater technical demands in modern machine design
and construction, R+W has developed
the unique reliable Model SK5
Safety Coupling.
Torque overload protection is often overlooked in machine
design until something jams resulting in expensive damage
and down time. The R+W Series SK5 safety coupling was
developed specifically for this
purpose. It uses a reliable ball detent system that is
absolutely backlash-free and will disengage within
1 to 3 milliseconds when an overload is
detected.
This coupling also features a unique keyed tapered hub
design allowing it to be quickly mounted and dismounted.
When the two coupling
halves are properly pretensioned this coupling is torsionally
rigid with zero backlash. The stainless steel bellow
compensates for axial, angular,
and lateral misalignment simultaneously making this one
of the most versitle couplings on the market.
Conventional hub designs incorporate a tightening screw requiring the assembler to access the coupling through a hole in a flange in order to assemble it to a shaft. Often in a break-down maintenance situation the tightening screw does not line up with the flange access hole making nearly impossible to disassemble the coupling from the drive shaft. The BK5 is the perfect solution in this situation. The bellow also isolates the shaft bearings of the drive and driven elements from any side loading due to misalignment, thus extending their service life.
Four versions are available including a single position,
multi-position, load holding, and full disconnect.
These couplings are preset in the factory to a customer
specified disengagement torque and
can be adjusted in the field after installation.
The mass moment of inertia is also very low due to
its low mass and low weight.
The SK5 couplings are available for a torque range of 0.2 to 500 Nm (1.8 to 4,425 in. lbs.). Both shaft hubs are custom bored for shaft sizes of 4 to 60 mm (0.16 to 2.36 in.).
Text: R+W Antriebselemente GmbH:17.10.05
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Torque Limiters - compact and backlash-free!
