Locking Assemblies
Simple and quick assembly and disassembly, complete freedom from maintenance and wear, absolutely backlash-free power transmission: RINGFEDER® Locking Assemblies are friction-locked shaft-hub connections manufactured to the highest quality standards. They are suitable for the precise fastening of all types of hubs, e.g. toothed gears, running wheels and chain sprockets, levers, cam discs, belt and brake discs, slip-on gears, couplings or flanges, on shafts and axles. Compared to external clamping connections, e.g. shrink discs, locking assemblies are installed between shaft and hub. By tightening the clamping screws, inner and outer rings press themselves onto the contact surfaces of the components to be connected, thus creating a friction-fit press connection. This allows not only the highest torques but also axial and radial as well as bending loads to be transmitted reliably. Keyless RINGFEDER® Locking Assemblies are the superior alternative to conventional shrink-fits, wedge, keyway or polygonal connections and offer outstanding concentricity and resistance to alternating torsion. Our locking assemblies are available to users in various standard designs and sizes as well as customised special solutions.
Locking Assemblies
Selection Tool
Use our Selection Tool for a quick and easy preliminary determination of a RINGFEDER® Locking Assembly suitable for your individual requirements.
Quick Locking Assemblies
Highly Efficient Use in Precision Applications with Confined Space Conditions
RfN 7003
Two-Part Series with Slotted Single Taper as well as without Flange
- Self-Centering
- Inner Diameter d: 19-400 mm
- Outer Diameter D: 47-495 mm
- Overall Length L: 34-137 mm
- Torque T: 355-512,625 Nm
RfN 7004
Extended Series of the RfN 7003 Series for Cost-Effective Hub Design
- Self-Centering
- Inner Diameter d: 19-180 mm
- Outer Diameter D: 47-235 mm
- Overall Length L: 45-98 mm
- Torque T: 530-63,903 Nm
RfN 7005
Three-Part, Slotted Series for Even the Highest Transmissble Torques
- Self-Centering
- Inner Diameter d: 25-600 mm
- Outer Diameter D: 55-695 mm
- Overall Length L: 46-224 mm
- Torque T: 649-1,8 Mio. Nm
RfN 7006
Two-Part Series with Slotted Single Taper as well as with Flange
- Self-Centering
- Without Axial Displacement
- Inner Diameter d: 19-400 mm
- Outer Diameter D: 47-495 mm
- Overall Length L: 34-138 mm
- Torque T: 270-375,945 Nm
RfN 7007
Series Similar to RfN 7004, but with Axial Fixation of the Hub by a Raised Flange
- Self-Centering
- Without Axial Displacement
- Inner Diameter d: 19-200 mm
- Outer Diameter D: 47-260 mm
- Overall Length L: 45-98 mm
- Torque T: 270-48,800 Nm
RfN 7012
Slimmest Series for Narrow Spaces as Well as Maximum Forces and Moments
- Without Axial Displacement
- Inner Diameter d: 19-1,000 mm
- Outer Diameter D: 47-1,100 mm
- Overall Length L: 28-130 mm
- Torque T: 306-2.4 Mio. Nm
RfN 7012.2
Same Dimensions as RfN 7012, Optimised for Transmission of Maximum Bending Loads
- Without Axial Displacement
- Inner Diameter d: 130-800 mm
- Outer Diameter D: 180-910 mm
- Overall Length L: 52-130 mm
- Torque T: 12,074-1.6 Mio. Nm
RfN 7013.0
Enhanced Strength, Optimal for Highest Rotational Speeds and Radial Loads
- Self-Centering
- Inner Diameter d: 19-150 mm
- Outer Diameter D: 47-200 mm
- Overall Length L: 37-77 mm
- Torque T: 285-28,500 Nm
RfN 7013.1
Series Similar to RfN 7013.0, but with Flange for Axial Hub Fixation
- Self-Centering
- Without Axial Displacement
- Inner Diameter d: 19-150 mm
- Outer Diameter D: 47-200 mm
- Overall Length L: 37-77 mm
- Torque T: 285-28,500 Nm
RfN 7014
Large Transmissible Peripheral Forces Due to Extended, Flat Cones
- Self-Centering
- Without Axial Displacement
- Inner Diameter d: 60-300 mm
- Outer Diameter D: 100-390 mm
- Overall Length L: 60-156 mm
- Torque T: 4,130-245,000 Nm
RfN 7015.0
Combined Transmission of Highest Torques, Axial Forces and Bending Loads
- Self-Centering
- Without Axial Displacement
- Inner Diameter d: 100-800 mm
- Outer Diameter D: 145-910 mm
- Overall Length L: 77-227 mm
- Torque T: 14,244-2.5 Mio. Nm
RfN 7015.1
Series Similar to RfN 7015.0, but in Addition with Extremely Low Surface Pressure
- Self-Centering
- Without Axial Displacement
- Low Surface Pressure
- Inner Diameter d: 100-800 mm
- Outer Diameter D: 145-910 mm
- Overall Length L: 75-220 mm
- Torque T: 6,575-903,696 Nm
RfN 7061
Two-Part, Highly Compact Series for Even Smallest Shaft Diameters
- Self-Centering
- Low Surface Pressure
- Inner Diameter d: 6-50 mm
- Outer Diameter D: 16-80 mm
- Overall Length L: 13,5-44 mm
- Torque T: 6-1,900 Nm
RfN 7110
Particularly Small Series for Thin-Walled Hubs and Confined Spaces
- Self-Centering
- Without Axial Displacement
- Low Surface Pressure
- Inner Diameter d: 8-130 mm
- Outer Diameter D: 15-165 mm
- Overall Length L: 28-139 mm
- Torque T: 30-23,700 Nm
RfN 7515
Three-Part Series, Optimized for Torques in Combination with Axial and Radial Loads
- Self-Centering
- Inner Diameter d: 60-640 mm
- Outer Diameter D: 95-735 mm
- Overall Length L: 58-177 mm
- Torque T: 4,299-1.3 Mio Nm