Metal Bellows Couplings GWB | RINGFEDER®

Highly precise, torsionally stiff, backlash-free – the world's leading metal bellows couplings of the RINGFEDER® GWB series – formerly GERWAH® GWB – are ideal for all applications in which torques or rotary movements must be transmitted from shaft to shaft with highest angular accuracy: In linear and spindle lifting units of machine tools and packaging machines, in medical and pump technology, in test benches, in automation, conveyor and control technology, in robotics and much more. Thanks to the characteristic metal bellow made of stainless steel, they compensate for radial, axial and angular shaft misalignments highly effectively, thus ensuring that the drive train is always positioned precisely. All metal bellows couplings of the RINGFEDER® GWB series are wear- and maintenance-free, extremely easy to install, highly compact in design and have a low moment of inertia. Users can thus achieve maximum cost-efficiency and operational reliability in equal measure – regardless of whether they use a proven standard design or a specially developed custom design.

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Product Paper GWB (PDF)

Metal Bellows Couplings GWB

Metal Bellows Couplings GWB AK | RINGFEDER®

GWB AK

Type with Tapered Clamping Bushes, Ideal Also for Higher Torque Values

  • 11 Sizes
  • Bore Diameter d: 9-90 mm
  • Outer Diameter D: 55-230 mm
  • Overall Length L: 52-199 mm
  • Rot. Speed nmax: 2,800-11,000 1/min
  • Torque T: 36-5,000 Nm
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Metal Bellows Couplings GWB AKD | RINGFEDER®

GWB AKD

Universally Applicable Type with Clamping Hubs, Very Good Misalignment Compensation

  • 9 Sizes
  • Bore Diameter d: 8-75 mm
  • Outer Diameter D: 45-132 mm
  • Overall Length L: 71-140 mm
  • Rot. Speed nmax: 5,000-12,700 1/min
  • Torque T: 18-800 Nm
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Metal Bellows Couplings GWB AKN | RINGFEDER®

GWB AKN

Compact, Shortened Type with Clamping Hubs and Enhanced Torsional Stiffness

  • 8 Sizes
  • Bore Diameter d: 8-64 mm
  • Outer Diameter D: 45-119 mm
  • Overall Length L: 63-111 mm
  • Rot. Speed nmax: 4,900-12,700 1/min
  • Torque T: 18-600 Nm
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Metal Bellows Couplings GWB CKN | RINGFEDER®

GWB CKN

Type with Flange Mounting for a Wide Range of Connection and Attachment Options

  • 12 Sizes
  • Bore Diameter d: 22-145 mm
  • Outer Diameter D: 46-230 mm
  • Overall Length L: 36-143 mm
  • Rot. Speed nmax: 3,000-13,900 1/min
  • Torque T: 22-5,000 Nm
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Metal Bellows Couplings GWB DKN | RINGFEDER®

GWB DKN

Highly Compact Miniature Type with Clamping Hubs for Most Confined Space Conditions

  • 6 Sizes
  • Bore Diameter d: 3-24 mm
  • Outer Diameter D: 16-40 mm
  • Overall Length L: 21-57 mm
  • Rot. Speed nmax: 15,000 1/min
  • Torque T: 0.5-12 Nm
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Metal Bellows Couplings GWB EKN | RINGFEDER®

GWB EKN

Highly Compact Miniature Type, Shaft Connection by Means of Radial Set Screws

  • 6 Sizes
  • Bore Diameter d: 3-28 mm
  • Outer Diameter D: 16-40 mm
  • Overall Length L: 20-54 mm
  • Rot. Speed nmax: 15,000 1/min
  • Torque T: 0.5-12 Nm
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Metal Bellows Couplings GWB PKA | RINGFEDER®

GWB PKA

Axially Pluggable Type with High-Strength Clamping Hubs, High Performance Density

  • 12 Sizes
  • Bore Diameter d1; d2: 3-64 mm
  • Outer Diameter D: 16-119 mm
  • Overall Length L: 26-145 mm
  • Rot. Speed nmax: 4,900-15,000 1/min
  • Torque T: 0.5-600 Nm
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Metal Bellows Couplings GWB Z5106 | RINGFEDER®

GWB Z5106

Type with Clamping Hubs in Split Design and Line Shaft for Larger Shaft Distances

  • 7 Sizes
  • Bore Diameter d: 8-62 mm
  • Outer Diameter D: 45-119 mm
  • Basic Part Length L6: 53-90 mm
  • Line Shaft Length L3: 134-3,000 mm
  • Torque T: 22-600 Nm
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