Metal bellows - Import export

Backlash-free Metal Bellows Coupling Series PKA with clamping hub Series PKA with clamping hub Metal bellows made of stainless steel, hubs made of aluminum Backlash-free and torsional stiffness High-tensile pluggable hub High power performance Wear- and maintenance-free Axial pluggable Easy mounting and dismounting Technical Data T KN = Nominal torque M A = Tightening torque of retaining screws C y dyn = Dynamic torsional stiffness Cr = Radial spring stiffness Ca = Axial spring stiffness n max = Max. rotational speed V = Preload distance △Ka = Max. approved misalignment axial △Kw = Max. approved misalignment angular △Kr = Max. approved misalignment radial J = Moment of inertia

GERWAH's 'PKN' unites the tried and tested technical advantages of a metal bellows coupling and a plug-in connection. These elements do not need any axial initial load due to tightening and thus allow for easy mounting and disassembly. The PKN series is the perfect choice when power has to be transmitted from shaft to shaft with the greatest possible angular accuracy. Backlash-free transmission of torque High torsional stiffness, precision of transmission of rotational angle Different torsional stiffness Compact design, low moment of inertia Metal bellows made of stainless steel Simple and safe assembly Compensation of radial, axial and angular misalignment Free of wear, maintenance-free, no downtimes Not sensitive to temperatures between -30°C and +100°C Nominal torques between 0,1 – 5000 Nm Advantages 100% inspection and traceability through individual marking Higher torques at same dimensions Compact design Extended bore ranges Customer-specific solutions Higher safety in...

Thanks to its compact design, GERWAH's Metal Bellows Coupling model 'DKN' is perfectly qualified for backlash-free connections in confined spaces. It is mounted on driver and driven components by means of clamping hubs. High-quality build and material guarantee for maximum durability. Backlash-free transmission of torque High torsional stiffness, precision of transmission of rotational angle Different torsional stiffness Compact design, low moment of inertia Metal bellows made of stainless steel Simple and safe assembly Compensation of radial, axial and angular misalignment Free of wear, maintenance-free, no downtimes Not sensitive to temperatures between -30°C and +100°C Nominal torques between 0,1 – 5000 Nm Advantages 100% inspection and traceability through individual marking Higher torques at same dimensions Compact design Extended bore ranges Customer-specific solutions Higher safety in application, e.g. no wrong screw tightening torques Backlash-free Metal Bellows...

Backlash-free Metal Bellows Coupling Series PKB with locking ring Series PKB with locking ring Metal bellows made of stainless steel, hubs made of aluminum Backlash-free and torsional stiffness High-tensile pluggable hub High power performance Wear- and maintenance-free Axial pluggable Axial mountable from in- and outside Technical Data T KN = Nominal torque M A = Tightening torque of retaining screws C y dyn = Dynamic torsional stiffness Cr = Radial spring stiffness Ca = Axial spring stiffness n max = Max. rotational speed V = Preload distance △Ka = Max. approved misalignment axial △Kw = Max. approved misalignment angular △Kr = Max. approved misalignment radial J = Moment of inertia

The DKN/S series is characterized by its compact shapes and a low moment of inertia. The shaft connection can be realized by means of a clamping hub on one side and an expanding clamp on the other. In addition, this pioneering element produced by GERWAH boasts unequalled product quality. Backlash-free transmission of torque High torsional stiffness, precision of transmission of rotational angle Different torsional stiffness Compact design, low moment of inertia Metal bellows made of stainless steel Simple and safe assembly Compensation of radial, axial and angular misalignment Free of wear, maintenance-free, no downtimes Not sensitive to temperatures between -30°C and +100°C Nominal torques between 0,1 – 5000 Nm Advantages 100% inspection and traceability through individual marking Higher torques at same dimensions Compact design Extended bore ranges Customer-specific solutions Higher safety in application, e.g. no wrong screw tightening torques Backlash-free Metal Bellows...

Backlash-free Metal Bellows Coupling Absolutely backlash-free • Life time proof and maintenance-free Accurate transmission characteristics • Installation and removal friendly Compact design • High torsional stiffness 5080 ECOLOC Compact design High torsional stiffness Dimensions L = Total length of coupling D 1 = Outer diameter of hub 1 H = Clearance diameter d 1/d 2 = Bore diameter C 1 = Guided length shaft bore d 1 K = Distance shaft axis - clamping screw axis I = Distance between clamping screw hole and hub end D G1 = Thread Characteristics Metal bellows made of stainless steel, hubs made of aluminum The shaft tolerance should be within the fit tolerance "g6" or "h7" The contact surfaces have to be free from oil and grease Optional designs with keyways DIN 6885-1

Backlash-free Metal Bellows Coupling Compact design • High misalignment compensation • Absolutely backlash-free • Life time proof and maintenance-free • Accurate transmission characteristics • Installation and removal friendly 5078 ECOLOC Compact design High misalignment compensation Dimensions L = Total length of coupling D 1 = Outer diameter of hub 1 H = Clearance diameter d 1/d 2 = Bore diameter C 1 = Guided length shaft bore d 1 K = Distance shaft axis - clamping screw axis I = Distance between clamping screw hole and hub end D G1 = Thread Characteristics Metal bellows made of stainless steel, hubs made of aluminum The shaft tolerance should be within the fit tolerance "g6" or "h7" The contact surfaces have to be free from oil and grease Optional designs with keyways DIN 6885-1

Backlash-free Metal Bellows Coupling Absolutely backlash-free • Life time proof and maintenance-free Accurate transmission characteristics • Installation and removal friendly Short design • High torsional stiffness • Low moment of inertia 5075 ECOLOC Short design High torsional stiffness Low moment of inertia Dimensions L = Total length of coupling D 1 = Outer diameter of hub 1 H = Clearance diameter d 1/d 2 = Bore diameter C 1 = Guided length shaft bore d 1 K = Distance shaft axis - clamping screw axis I = Distance between clamping screw hole and hub end D G1 = Thread Characteristics Metal bellows made of stainless steel, hubs made of aluminum The shaft tolerance should be within the fit tolerance "g6" or "h7" The contact surfaces have to be free from oil and grease Optional designs with keyways DIN 6885-1

The GWZ 5116 is a backlash-free, torsionally stiff metal bellows coupling in line shaft design. Because of the double cardanic system, the compensating of high shaft displacements are possible. Due to the flange connection, the radial mounting is possible. Torsionally stiff and flexible line shafts are used in applications where torque and rotational motion combined with the highest possible angular precision should be transmitted or considerable distances between shafts need to be bridged. The application range of line shafts covers almost all technical areas, where mechanical power transmission and stiffness are important: Torsionally flexible line shafts with elastomeric spider Absolutely backlash-free Installation length up to 4 m possible Compensation of axial, radial and angular misalignment Cost-effective, simple assembly Maintenance free Variable length of the intermediate steel or aluminium tube Backlash-free elastomeric spider Excellent transmission of torque and...

The GWZ 5106 is a backlash-free metal bellows coupling in line shaft design. Because of the double cardanic system, the compensating of high shaft displacements are possible. The clamping hubs in split hub design can be mounted lateral at the aligned shaft extensions. Torsionally stiff and flexible line shafts are used in applications where torque and rotational motion combined with the highest possible angular precision should be transmitted or considerable distances between shafts need to be bridged. The application range of line shafts covers almost all technical areas, where mechanical power transmission and stiffness are important: Torsionally flexible line shafts with elastomeric spider Absolutely backlash-free Installation length up to 4 m possible Compensation of axial, radial and angular misalignment Cost-effective, simple assembly Maintenance free Variable length of the intermediate steel or aluminium tube Backlash-free elastomeric spider Excellent transmission of...

The clamping hubs in split hub design can be mounted lateral at the aligned shaft extensions. Torsionally stiff and flexible line shafts are used in applications where torque and rotational motion combined with the highest possible angular precision should be transmitted or considerable distances between shafts need to be bridged. The application range of line shafts covers almost all technical areas, where mechanical power transmission and stiffness are important: Torsionally flexible line shafts with elastomeric spider Absolutely backlash-free Installation length up to 4 m possible Compensation of axial, radial and angular misalignment Cost-effective, simple assembly Maintenance free Variable length of the intermediate steel or aluminium tube Backlash-free elastomeric spider Excellent transmission of torque and compensation of misalignment High transmission accuracy Temperature range -30° to +120° C / -22 F to +248 F Torsionally stiff line shafts with metal bellows Absolutely...

Servo-insert coupling with clamping hubs. Torsionally stiff and flexible line shafts are used in applications where torque and rotational motion combined with the highest possible angular precision should be transmitted or considerable distances between shafts need to be bridged. The application range of line shafts covers almost all technical areas, where mechanical power transmission and stiffness are important: Torsionally flexible line shafts with elastomeric spider Absolutely backlash-free Installation length up to 4 m possible Compensation of axial, radial and angular misalignment Cost-effective, simple assembly Maintenance free Variable length of the intermediate steel or aluminium tube Backlash-free elastomeric spider Excellent transmission of torque and compensation of misalignment High transmission accuracy Temperature range -30° to +120° C / -22 F to +248 F Torsionally stiff line shafts with metal bellows Absolutely backlash-free Installation length up to 4 m...

Stainless steel bellows, formed from seam-welded thin wall tubing Stainless steel bellows, formed from deep-drawn seamless tubing Bronze and Brass bellows for measuring and controlling applications Hydroformed bellows from exotic alloys as Beryllium copper or Monel400 Customized designs and end forms, also off-the-shelf standard solutions Special coatings on demand

Examples of applications include pressure switches or thermostats: Deep-drawing techniques to manufacture seamless tubing up to 50mm ID and 450mm length - in wall-thicknesses as low as 0,064mm. Based on this, our smalles precision bellows start with only 6X4,2mm. Mainly requested with individual bottom shape, they are performing as reliable force transmitters. Besides bronze and brass, stainless steel and other alloys are available.

Deep-drawn tubes from stainless steels (with a closed side or open) Deep-drawn tubes from non-ferrous metals as bronze, brass,... Seamless sleeves made with stamping processes Ultra thin-walled tubing in Beryllium copper or other special alloys Annealing services in vacuum furnaces Washing technologies for soap and oil The precision tubing is needed at Mera Bellows to manufacture seamless metal bellows.