Shaft Couplings

For over 60 years, RINGSPANN has been renowned as a provider for couplings, beginning with the parented L-coupling from 1956, which is still offered today as model RDA … EDO. RINGSPANN has since expanded its coupling range and now offer the not shiftable couplings for almost all applications. For example, the rigif Tru-Line Flange-Couplings of the RFK … TBO model with a special Shaft-Hub-Connection allows for freelt hanging motor gear units with a torque support to be coupled to conveyor belt pulleys without fretting corrosion while accommodating significant rotating bending moment stress.

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For over 60 years, RINGSPANN has been renowned as a provider for couplings, beginning with the parented L-coupling from 1956, which is still offered today as model RDA … EDO. RINGSPANN has since expanded its coupling range and now offer the not shiftable couplings for almost all applications. For example, the rigif Tru-Line Flange-Couplings of the RFK … TBO model with a special Shaft-Hub-Connection allows for freelt hanging motor gear units with a torque support to be coupled to conveyor belt pulleys without fretting corrosion while accommodating significant rotating bending moment stress.

RINGSPANN offers equally suitable couplings for applications where it is critical for torque to be transmitted through a torsionally rigid connection without backlash while still being able to accommodate for shaft misalignment.

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Right Shaft Couplings

Tru-Line Flange-Coupling RFK … TBO

  • Compact design
  • Small axial space required for installation
  • Fast disassembly for minimal downtime
  • High shaft tolerance h8 permissible
  • No weakening of shafts by feather keys
  • No fretting corrosion as with keyway connections

Cone Clamping Couplings RWK … EEO

  • Compact design
  • Easy to release
  • For shaft diameters between 14 mm and 100 mm
  • Rigid and backlash free connection of shaft ends
  • No weakening of shafts by feather keys
  • No fretting corrosion as with keyway connections
  • Transmission of torques and axial forces

Torsionally Rigid Shaft Couplings

Gear Couplings (RDZ … DTO, RDZ … DFO and RDZ … EEO)

Gear Couplings RDZ … DTO

  • 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 to weight ratio

Gear Couplings RDZ … DFO

  • High nominal torques up to 391 500 Nm
  • Compensation of axial and angular misalignments
  • Compact design due to inside turned hubs
  • High power to weight ratio

Gear Couplings RDZ … EEO

  • 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

Disc Couplings (RDL … DSO, RDL … DSZ and RDL … DSA)

  • Nominal torques up to 18 700 Nm (RDL … DSO, RDL … DSZ and RDL … DSA)
  • Combines high torque capacity with low weight (RDL … DSO, RDL … DSZ and RDL … DSA)
  • Backlash free (RDL … DSO, RDL … DSZ and RDL … DSA)
  • Compensation of axial and angular misalignments (RDL … DSO, RDL … DSZ and RDL … DSA)
  • High torsional rigidity with low axial rigidity (RDL … DSO, RDL … DSZ and RDL … DSA)
  • Temperature range -20 °C to +280 °C (RDL … DSO, RDL … DSZ and RDL … DSA)
  • Maintenance free and long life with proper alignment (RDL … DSO and RDL … DSZ)
  • Double disc pack allows smooth torque transmission (RDL … DSZ and RDL … DSA)

Flexible Coupling

  • Compact design
  • Small dimensions
  • Electrical insulation
  • No stick-slip action
  • Large radial shaft misalignment permissible
  • Torsionally rigid
  • Minimal restoring forces on adjacent machine parts

Elastic Shaft Couplings

Grid Couplings RES … EYO and Grid Couplings RES … ETO

  • High nominal torques up to 335 500 Nm
  • Compensation of axial, radial and angular misalignments
  • Initial damps torsionally vibration, at higher torques torsionally rigid
  • Gradual increase in torsional rigidity as torques increase
  • Horizontally split cover
  • Easy replacement of the grid
  • Nominal torques up to 169 000 Nm (RES … ETO)
  • Vertically split cover (RES … ETO)

Pin and Bush Couplings REB … DCO

  • Vertical/horizontal mounting
  • Adsorbs vibrations
  • Progressive torsion spring properties due to primarily pressurised bushings
  • Fail-safe in the event of the failure of the bushings
  • Easy replacement of bushings without disassembly of the coupling halves
  • Maintenance free, no lubrication necessary
  • Declaration of conformity in accordance with ATEX 2014/34/EU possible

Jaw Couplings (REK … DQO, REK … DGO, REK … DHO, REK … DGZ, REK … DCO, REK … ECO)

  • Nominal torques up to 169 000 Nm (REK … DQO)
  • Compensation of axial, radial and angular misalignments (REK … DQO, REK … DGO, REK … DHO, REK … DQZ, REK … DCO, REK … ECO)
  • Adsorbs vibrations (REK … DQO, REK … DGO, REK … DHO, REK … DQZ, REK … DCO, REK … ECO)
  • Progressive torsion spring properties due to primarily pressurised elastomer cushions (REK … DQO, REK … DGO, REK … DHO, REK … DQZ, REK … DCO, REK … ECO)
  • Fail-safe in the event of the failure of the elastomer cushions (REK … DQO, REK … DGO, REK … DHO, REK … DQZ, REK … DCO, REK … ECO)
  • Maintenance free, no lubrication necessary (REK … DQO, REK … DGO, REK … DHO, , REK … DQZ, REK … DCO, REK … ECO)
  • Elastomer cushions radially replaceable without moving the drive (REK … DQO, REK … DHO)
  • Declaration of conformity in accordance with ATEX 2014/34/EU possible (REK … DQO, REK … DGO, REK … DHO, REK … DQZ, REK … DCO, REK … ECO)
  • Easy replacement of elastic elements without disassembly of the coupling halves (REK … DQZ)
  • Easy separation of the drivetrain through disassembly of the coupling spacer (REK … DQZ)
  • Symmetrical design allows for high running speeds without additional balancing (REK … DCO)

Rigid Shaft Couplings

Tru-Line Flange-Coupling RFK … TBO

  • Drive units
  • Conveyor drives e.g. in mining

Cone Clamping Couplings RWK … EEO

  • Connection of shaft sections e.g. with slitter winders in the paper industry

Torsionally Rigid Shaft Couplings

Gear Couplings RDZ … DTO, Gear Couplings RDZ … DFO

  • Roll drives in the steel and paper industry
  • Pumps
  • Conveyors
  • Fans and blowers

Gear Couplings RDZ … EEO

  • Hydraulics
  • Pump drives

Disc Couplings RDL … DSO, RDL … DSZ

  • Pumps (RDL … DSO. RDL … DSZ)
  • Fans (RDL … DSO. RDL … DSZ)
  • Packaging machines (RDL … DSO. RDL … DSZ)
  • Paper machines (RDL … DSO. RDL … DSZ)
  • Printing machines (RDL … DSO. RDL … DSZ)
  • Conveyor systems (RDL … DSO)
  • Dynamometers (RDL … DSO, RDL … DSZ)
  • Gantry systems (RDL … DSO)
  • Mixers (RDL … DSZ)

Disc Couplings RDL … DSA

  • Centrifugal pumps
  • Screw pumps
  • Turbo compressors
  • Rotary piston fans

Flexible Coupling

  • Printing machines
  • Machine tools

Elastic Shaft Couplings

Grid Couplings RES … EYO, RES … ETO

  • Crushers
  • Reels
  • Mills
  • Calenders
  • Mixers
  • Belt drives

Pin and Bush Couplings REB … DCO

  • Pump drives
  • Belt drives
  • Ventilators
  • General mechanical engineering

Jaw Couplings REK … DQO

  • Piston pumps and piston compressors
  • Diesel motors
  • Gas motors
  • Heavy duty applications

Jaw Couplings REK … DGO, REK … DHO, REK … DGZ, REK … DCO, REK … ECO

  • Pump drives (REK … DGO, REK … DHO, REK … DGZ, REK … DCO)
  • Ventilator drives (REK … DGO, REK … DHO, REK … DGZ, REK … DCO)
  • Crane trolleys (REK … DGO, REK … DHO, REK … DGZ, REK … DCO)
  • Machine tools (REK … DCO, REK … ECO)
  • Conveyor belts (REK … DCO, REK … ECO)
  • Rigid Shaft Couplings
  • Torsionally Rigid Shaft Couplings
  • Elastic Shaft Couplings

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