Shrink Discs | RINGFEDER®

The high-quality original from the world market leader: RINGFEDER® Shrink Discs are flange-shaped, friction-locked shaft-hub connections and the more powerful and reliable alternative to conventional shrink fits, wedge, keyway or polygonal connections. In contrast to internal locking devices, e.g. locking assemblies, the pressure is applied from the outside to the hollow shaft or hub, thus creating an absolutely backlash-free, frictionally engaged connection between shaft and hub. The shrink disc is therefore not in the load path – instead, the torque is transmitted in a force-locking manner at the joining surface between shaft and hub without an intermediate element. RINGFEDER® Shrink Discs also convince through complete freedom from wear and maintenance, easy assembly and dismantling as well as outstanding resistance to alternating torsion and concentricity properties. Depending on customer-specific requirements, our shrink discs are available in proven standard and specially developed special variants, in two- and three-part designs as well as in stainless steel. In addition to torque and bending loads, axial and radial loads can also be transmitted.

Shrink Discs

Additional Models Shrink Discs | RINGFEDER®

Additional Models

Half and Split Versions as Well as Further Stainless Steel Designs

Shrink Discs RfN 4051 | RINGFEDER®

RfN 4051

Light Version for Medium Transmission Values, Ideal for Thin-Walled Hubs and Shafts

  • 3-Part Design
  • Inner Diameter d: 125-500 mm
  • Outer Diameter D: 185-750 mm
  • Overall Length L: 58-171 mm
  • Torque T: 10,550-1 Mio. Nm
Shrink Discs RfN 4061 | RINGFEDER®

RfN 4061

Universally Applicable Series for Smaller Shaft Diameters and High Torques

  • 3-Part Design
  • Inner Diameter d: 14-200 mm
  • Outer Diameter D: 37-350 mm
  • Overall Length L: 15-96 mm
  • Torque T: 30-87,200 Nm
Shrink Discs RfN 4061 Stainless Steel | RINGFEDER®

RfN 4061 SST

Corrosion-Resistant Series of RfN 4061 Made from Highly Robust Stainless Steel

  • 3-Part Design
  • Inner Diameter d: 14-200 mm
  • Outer Diameter D: 37-350 mm
  • Overall Length L: 16-102 mm
  • Torque T: 30-87.200 Nm
Shrink Discs RfN 4071 | RINGFEDER®

RfN 4071

Extended Version of RfN 4061 for Larger Shaft Diameters and Highest Transmission Values

  • 3-Part Design
  • Inner Diameter d: 220-370 mm
  • Outer Diameter D: 370-850 mm
  • Overall Length L: 114-230 mm
  • Torque T: 95,000-1.5 Mio. Nm
Shrink Discs RfN 4073 | RINGFEDER®

RfN 4073

Smallest Series with Minimum Moment of Inertia, Ideal for Lower Transmission Values

  • 3-Part Design
  • Inner Diameter d: 14-160 mm
  • Outer Diameter D: 34-204 mm
  • Overall Length L: 14-36 mm
  • Torque T: 9-7,260 Nm
Shrink Discs RfN 4091 | RINGFEDER®

RfN 4091

Heaviest, Highly Robust Series for Maximum Transmission Values Even at Extreme Loads

  • 3-Part Design
  • Inner Diameter d: 50-500 mm
  • Outer Diameter D: 95-850 mm
  • Overall Length L: 44.5-291 mm
  • Torque T: 1,800-2 Mio. Nm
Shrink Discs RfN 4161 | RINGFEDER®

RfN 4161

Proven Standard Series with Smaller Dimensions for Transmission of High Torques

  • 2-Part Design
  • Inner Diameter d: 18-200 mm
  • Outer Diameter D: 44-340 mm
  • Overall Length L: 19-95.5 mm
  • Torque T: 80-124,000 Nm
Shrink Discs RfN 4181 | RINGFEDER®

RfN 4181

Size-Extended Version of RfN 4161 for Larger Shaft Diameters and Highest Torques

  • 2-Part Design
  • Inner Diameter d: 220-800 mm
  • Outer Diameter D: 370-1,230 mm
  • Overall Length L: 115-373 mm
  • Torque T: 160,000-8 Mio. Nm