Locking Assemblies
Our RINGFEDER® Locking Assemblies create high-capacity, completely backlash-free internal force-fit clamping connections for the precise mounting of a wide variety of hub components on shafts and axles. By tightening the clamping screws, the tapered inner and outer rings are axially pressed against each other; the resulting surface pressure creates a secure friction-locked connection between shaft and hub. Keys, wedges or other form-fit elements are not required, allowing the components to remain free of keyways and achieve high fatigue strength under alternating torsional loads. Depending on the series, the locking assemblies transmit torques and axial loads as well as combined radial loads and bending moments. Self-centering versions provide precise concentricity, versions without axial displacement maintain the hub position during installation, while low surface pressures protect thin-walled hubs and materials with low yield strength. Typical applications include gear wheels, running wheels and sprockets, cams, levers, belt and brake pulleys, shaft-mounted gearboxes, couplings and flanges in machinery and plant engineering as well as drive and material handling technology. The extensive standard range for shaft diameters of up to 1,000 millimeters is complemented by customized solutions that enable even exceptional installation, material and performance requirements to be met economically.
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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.
True Imperial Sizes
Looking for RINGFEDER® Locking Assemblies in true imperial sizes? These are available to you for our series RfN 7003, RfN 7004, RfN 7005, RfN 7006, RfN 7007, RfN 7012, RfN 7013.0, RfN 7013.1 and RfN 7515.
Quick Locking Assemblies
RINGFEDER® Quick Locking Assemblies with Central Nut for Compact, Backlash-Free Precision Connections. Self-Centering, Lightweight and Quick to Install.
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, Optimized 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
