Shaft Couplings Flange Couplings • Cone Clamping Couplings • Gear Couplings • Disc Couplings Flexible Couplings • Grid Couplings • Pin and Bush Couplings • Jaw Couplings Edition 2026/2027 RINGSPANN® Registered trademark of RINGSPANN GmbH, B

overload holding / fail safe Tru-Line Flange-Couplings Technical points Ordering information for bore in imperial dimension Issue 04/2026 •Technical details subject to change without notice

Installation / alignment rigid / excellent rigid / roughly Permissible misalignments Ambient conditions RINGSPANN* Page Complies with Key oo true, well suited O conditionally suitable, conditionally applicable * on request

Couplings by RINGSPANN For over 60 years, RINGSPANN has been renowned as a provider of couplings, beginning with the patented L-coupling from 1956, which is still offered today as model RDA … ESO. Back then RINGSPANN was able to offer drive system engineers a compact, torsionally rigid flexible coupling based on the Oldham principle that can compensate large parallel and angular misalignments in small spaces. RINGSPANN has since expanded its coupling range and can now offer the couplings for almost all applications. For example, the rigid Tru-Line Flange-Couplings of the RFK … TBO model with...

Features Compact design Small axial space required for installation Quick disassembly for minimal downtime Large allowable shaft tolerance of h8 Shafts are not weakened by keyways No fretting corrosion like with keyway connections Typical applications: Drive units and conveyor drives e.g. in mining Transmissible torques The transmissible torques listed on the following page are subject to the listed tolerances, surface finishes and material requirements. Please contact RINGSPANN in case of deviations. • h8 for shaft diameters dF or dM Surfaces Average surface finish at the contact surfaces of...

Tru-Line Flange-Couplings RFK … TBO backlash-free cone clamping connection Tru-Line FlangeCoupling RFK Size Coupling Half FSC Female Pilot Inertia moment at max. bore JKM Flange connection screws Y* Tightening torque Cone clamping screws Z Tightening torque Paired coupling halves of the same colour can be interchanged due to matching flange patterns. The maximum torques of the smaller coupling half apply. * Number of connection screws Y in accordance DIN EN ISO 4014 property class 10.9 or 12.9 for RFK 0050 TBO on pitch circle T. ** for min. bore Mounting The installation and operating instruction...

• Compact design • For shaft diameters ranging from 14 mm to 100 mm • Rigid and backlash-free connections of the shaft ends • Shafts are not weakened by keyways • No fretting corrosion like with keyway connections • Transmission of torque and/or axial forces • Typical applications: Connection of shaft sections e.g. with slitter winders in the paper industry The transmissible torques and axial forces listed on the following page are subject to the listed tolerances, surface finishes and material requirements. Please contact RINGSPANN in case of deviations. Simultaneous transmission of torque and...

Where there are bending moments in the application in addition to the torque TN max or the axial force FAN max, the transmissible torque or transmissible axial force is reduced compared to the values for TK max or Fax max as listed in the table. Please contact RINGSPaNn. The installation and operating instruction for Cone Clamping Coupling RWK ... EEO is available on request.

• High nominal torques up to 391 500 Nm • High misalignment capability • Compensation of axial, radial and angular misalignments • Double engagement allows smooth torque transmission • Compact design due to inside turned hubs • Complies with the AGMA standard (American Gear Manufacturer Association) up to coupling size 0090 • High power density • Complies with ATEX 2014/34/EU • Typical applications: Roll drives in the steel and paper industry, pumps, conveyors, fans and blowers Order example Code Coupling half, • finish bored with keyway FB

For finish bores, please specify bore diameter hub A and hub B. Tolerance of finish bores H7. Keyways in accordance with DIN 6885, sheet 1. Keyway tolerance JS9, different bore and keyway tolerances on request. Upon request, couplings larger than frame size 0100 also available. * Bores also available in inch size, see page 73. • ** Minimum necessary space to align the shafts.

High nominal torques up to 391 500 Nm Compensation of axial and angular misalignments Compact design due to inside turned hubs High power density Complies with ATEX 2014/34/EU Typical applications: Roll drives in the steel and paper industry, pumps, conveyors, fans and blowers Order example Code • I, coupling half, rigid • finish bored with keyway FB

For finish bores, please specify bore diameter hub A and hub B. Tolerance of finish bores H7. Keyways in accordance with DIN 6885, sheet 1. Keyway tolerance JS9, different bore and keyway tolerances on request. * Bores also available in inch size, see page 73. • ** Minimum necessary space to align the shafts.

• Compensation of axial, radial and angular misalignments Double engagement allows smooth torque transmission Deployable in horizontal and vertical applications Temperature range from -25 °C to +100 °C Low weight and low moments of interia Maintenance free thanks to a combination of steel and polyamide 6.6 Typical applications: Hydraulics, pump drives Order example Code • finish bored with keyway FB

For finish bores, please specify bore diameter hub A and hub B. Tolerance of finish bores H7. Keyways in accordance with DIN 6885, sheet 1. Keyway tolerance JS9. * Bores also available in inch size, see page 73. ** Minimum dimensions by which the units need to be pushed apart to enable a radial disassembly of the sleeve.

Gear Couplings RDZ … EEO Selection of IEC standard motors A.C. motor 50 Hz Frame size Shaft end d x l 2 4, 6, 8 pole pole mm Motor power RDZ ... EEO Motor power RDZ ... EEO Motor power RDZ ... EEO n = 3 000 min-1 2 pole n = 1 500 min-1 4 pole n = 1 000 min-1 6 pole Power Torque Coupling Power Torque Coupling Power Torque Coupling PAN TAN size PAN TAN size PAN TAN size kW Coupling size Motor power n = 750 min-1 8 pole Power Torque PAN TAN During selection, the nominal torque of the coupling at +30 °C was factored in with a start-up factor SZ of 1 and a co-efficient of impact SA/SL of 1. Detailed...