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Metal bellow couplings

Metal bellow couplings

Metal bellows couplings are torsionally stiff couplings, also known as corrugated pipe couplings, bellows couplings, servo couplings, torsionally stiff couplings, miniature couplings, etc. They transmit the rotary motion from one shaft end to the other with angular accuracy and backlash-free. Misalignments on the shafts, caused by manufacturing and assembly inaccuracies, as well as thermal expansion and other deformation, are compensated by the laterally, angularly and axially flexible metal bellows. In the case of bellows couplings, there are no unacceptably high bearing loads, as may be the case with rigid couplings. The various types of couplings differ in the type of shaft-hub connection and in size and material. Keyways and the like are generally not necessary.

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Metal bellow couplings MKJ
MKJ couplings are the ideal solution for a precise and true angular connection of two shafts. The MJK series, proven a thousand times over, is absolutely reliable. Within defined limits, axial, lateral and angular misalignment between two shaft ends can be compensated. 

Nominal torque from 0.7 to 15Nm

Shaft diameter up to 25mm

With clamping hub, small installation space

Metal bellow couplings MKS
The pluggable metal bellows coupling: MKS. Derived from the MKJ series and available in the same sizes. The hubs are made of aluminium. Due to the pluggability this coupling is very easy to install. The metal bellows is protected against overstretching in the event of incorrect manipulation (incorrect plug-in position) by the protective sleeve fitted inside. 

Nominal torque from 0.8 to 13Nm

Shaft diameter up to 20mm

Pluggable with clamping hubs, small installation space

Metal bellow couplings MKE
Completely in stainless steel and therefore ideally suited for machines in the medical and food industry: The MKE stainless steel coupling. The stainless steel clamping hubs are welded to the compact metal bellows. Due to their small size, the couplings have a low mass moment of inertia. 

Nominal torque from 0.70 to 15Nm

Shaft diameter up to 25mm

Completely in stainless steel, temperature resistance up to 250°C

Metal bellow couplings MKJ-S
MKJ-S is the big brother of the MKJ series. The clamping hubs are equipped with two screws. The hubs are made of steel and welded to the metal bellows. The ideal solution for an exact and angular connection of two shafts. Axial, lateral and angular misalignment between two shaft ends can be compensated. 

Nominal torque from 15 to 500Nm

Shaft diameter up to 60mm

Ideal for servo motors, with clamping hub

Metal bellow couplings MKA-S
MKA-S is the weight-optimised metal bellows coupling with aluminium clamping hubs. With only one clamping screw per hub it is very easy to install. The stable connection between the stainless steel metal bellows and the aluminium clamping hubs as well as the torsionally stiff metal bellows guarantee absolute freedom from backlash. Suitable for applications from 15 to 500Nm. 

Nominal torque from 15 to 500Nm

Shaft diameter up to 75mm

clamping hub made of aluminium, easy to install

Metal bellow couplings MKS-S
The metal bellow is protected against overstretching in case of incorrect manipulation (wrong plug position) by the protective sleeve mounted inside. The axial pretension of the metal bellow (1 mm each) guarantees absolute freedom from play in the plug connection. 

Nominal torque from 20 to 100Nm

Shaft diameter up to 48mm

Clamping hub connectible, balanced

Metal bellow couplings MKK-S
If a radial screw connection is not possible for space reasons, the MKK-S metal bellow coupling is the best choice. It is equipped with a clamping cone which is clamped from the front. Suitable for larger applications from 15 to 500Nm. The hubs are made of steel and welded to the metal bellow. 

Nominal torque from 15 to 500Nm

Shaft diameter up to 60mm

With clamping cone, short installation length

Metal bellow couplings are torsional resistant couplings, also known as bellow coupling, metal bellow coupling, miniature coupling, servo coupling, torsion resistant coupling, bellow clutches, etc. They transmit the rotation backlash-free and in precise angles from one shaft end to the other.