Metal bellow-type coupling FI
15 – 340 Nm / metal bellow-type coupling
PI is an axial plug-in metal bellow-type coupling as a plug-in design for quick and frequent assembly and disassembly.
Up to size 45 the hubs are made of aluminium, from size 46 from steel. The bellow is made of stainless steel. TOOLFLEX PI provides a high friction torque. The metal bellow-type coupling is available both as frictionally engaged connections without feather keyway and as positive-locking connections with feather keyway.
Types of PI metal bellow-type coupling:
type S: metal bellow-type coupling with compact bellow with 4 layers
type M:
metal bellow-type coupling with bellow with 6 layers
Featuresldl
- backlash-free, torsionally stiff plug-in metal bellow-type coupling
- axial plug-in
- optionally available with short bellow with 4 layers (type S) or bellow with 6 layers (type M)
- offsetting radial, axial and angular displacements.
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PI is a backlash-free, torsionally stiff and flexible all-metal coupling with a bellow made of stainless steel. Depending on size and type the coupling hubs are available made of aluminium or steel.
The metal bellow optimally compensates for axial, radial and angular displacements with conformal torque transmission and low restoring forces. At the same time PI has a high torsional stiffness and a low mass moment of inertia. It is free from wear and maintenance and extremely easy to assemble.
Function
The torque is transmitted to the hubs via a metal bellow made of stainless steel. The connection of the bellow to the hubs is made in three different types: With sizes 5 to 12 the metal bellow is bonded to the hubs. For that reason the maximum permissible temperature range is from – 30 °C to + 100 °C. With sizes 16 to 55 the bellow is crimped with the hubs and secured by a brass wire pressed in. This ensures torque transmission of every single bellow layer. The bellow-hubs-connection sizes 55 and 65 is made by a welded connection.
