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SIAM RINGSPANN
Shaft Couplings

Shaft Couplings

Product catalog summary

Introduction
RINGSPANN GmbH has been a prominent provider of shaft couplings for over 60 years, beginning with the L-coupling in 1956. The company offers a variety of couplings, including rigid, torsionally rigid, and flexible types, designed to handle shaft misalignments and ensure backlash-free torque transmission.

Types of Shaft Couplings

Tru-Line Flange-Couplings (RFK … TBO): Compact design, minimal axial space, quick disassembly, suitable for drive units and conveyor drives, especially in mining.
Cone Clamping Couplings (RWK … EEO): Compact, easy removal, rigid, backlash-free connections without weakening shafts.
Gear Couplings (RDZ … DTO): Torsionally rigid, double engagement gearing, handle high torques and misalignments, used in roll drives, pumps, conveyors, and fans.

Technical Specifications
Detailed specifications for each coupling type include nominal torques, permissible misalignments, and material requirements. Ordering information and selection examples are provided.

Installation and Maintenance
Installation instructions and maintenance guidelines are available upon request. Correct coupling selection is emphasized to prevent issues like fretting corrosion and ensure optimal performance.

Conclusion
RINGSPANN offers a comprehensive range of shaft couplings for diverse industrial needs, engineered for reliable and efficient power transmission.

Gear Couplings RDZ

Types: DTO, DFO, EEO.
Features: High nominal torques, misalignment compensation, compact design, high power-to-weight ratio.
Applications: Roll drives, pumps, conveyors, fans, blowers.
Specifications: Nominal torque, power, max speed, moment of inertia, permissible misalignments.

Disc Couplings RDL

Types: DSO, DSZ.
Features: High torque capacity, backlash-free, misalignment compensation, high torsional rigidity, maintenance-free.
Applications: Pumps, fans, packaging machines, conveyor systems.
Specifications: Nominal torque, power, max speed, torsional stiffness, moment of inertia.

Technical Specifications

Bore Sizes: Detailed bore sizes, tolerances, keyway specifications.
Material: Typically steel, with polyamide sleeve options.
Temperature Range: Operating temperatures from -25°C to +280°C.

Selection and Ordering

Order Codes: Examples for ordering specific designs and sizes.
IEC Motor Compatibility: Guidance for coupling with IEC standard motors.

Disc Couplings RDL … DSA

Features: Torsionally rigid, double disc packs, API 610 design, high torque capacity, suitable for high-temperature applications.
Applications: Centrifugal pumps, screw pumps, turbo compressors, rotary piston fans.
Technical Specifications: Nominal torque, power, max speed, torsional stiffness, moment of inertia, permissible misalignments.

Flexible Couplings RDA … ESO

Features: Compact, robust, electrical insulation, large radial shaft misalignment, torsionally rigid.
Applications: Printing machines, machine tools.
Technical Specifications: Max torque, speed, moment of inertia, misalignments.

Grid Couplings RES … EYO

Features: High nominal torques, misalignment compensation, easy grid replacement.
Applications: Crushers, reels, mills, calenders, mixers, belt drives.
Technical Specifications: Torque, speed, moment of inertia, dimensions.

Ordering Information
Order examples with codes for specifying design, size, type, hub material, and bore diameters. Compliance with standards like API 610 and optional API 671 is mentioned.

Additional Notes
Tables with detailed dimensions and technical data for each coupling type are included. Importance of specifying bore diameters and tolerances when ordering is highlighted.

Grid Couplings

Types: RES ... EYO, RES ... ETO.
Features: Elastic, compensates for misalignments, easy grid replacement.
Applications: Crushers, reels, mills, calenders, mixers, belt drives.
Specifications: Nominal torques, sizes, permissible misalignments.

Pin and Bush Couplings

Type: REB ... DCO, elastic, lubrication-free.
Features: Absorbs vibrations, maintenance-free, fail-safe design.
Applications: Pump drives, belt drives, ventilators, general mechanical engineering.
Specifications: Nominal torque, power, speed, permissible misalignments.

Jaw Couplings

Type: REK ... DQO, dynamic applications.
Features: Elastic, compensates for misalignments, absorbs vibrations, maintenance-free.
Applications: Piston pumps, compressors, diesel and gas motors, heavy-duty applications.
Specifications: Nominal torque, power, speed, permissible misalignments.

General Notes

Finish bores should specify bore diameter for hub A and hub B, with tolerance H7 and keyways according to DIN 6885, sheet 1.
Bores available in inch sizes.
For vertical installations, contact RINGSPANN for specific requirements.

Jaw Couplings REK Series

Specifications: Various sizes and materials, polyurethane elastic elements, nominal torque, maximum torque, torsional stiffness.
Design and Material Options: Different hub types and designs, spiders in different hardness levels and colors.
Performance and Applications: Compensate for misalignments, absorb vibrations, maintenance-free, typical applications include pump drives, ventilator drives, crane trolleys, machine tools, conveyor belts.
Selection Guidelines: Based on DIN 740 part 2 standards, considering nominal power, speed, torque.
Technical Data: Dimensions, weights, moments of inertia, permissible misalignments, nominal power at different motor speeds.

Selection Guidelines
Guidelines for selecting couplings according to DIN 740 part 2, focusing on service factors and environmental conditions. Covers disc couplings, flexible couplings, elastic shaft couplings, pin and bush couplings, and jaw couplings.

Specifications
Specifications for different coupling designs, emphasizing selection based on service factors and environmental conditions.

Procedures
Selection involves calculating nominal torque and ensuring it does not exceed coupling nominal torque. Adjustments for temperature factors and additional calculations for alternating torque and harmonic resonance are necessary for certain drives.

Norms and Standards
Adheres to DIN 740 part 2 standards, references AGMA and ANSI standards for bore tolerance and keyway geometry.

Recommendations
Recommends simulation methods for calculating start-up peak torque and conducting rotational vibration analysis for certain drives.

Technical Points
Details on taper bushes, screw tightening torque, clamping screw details, bore dimensions. Includes a questionnaire for selecting Tru-Line Flange-Couplings and Shaft Couplings.

Tables and Data
Includes tables for service factors, temperature factors, start-up factors, co-efficient of impact, dimensions for taper bushes, ordering information for bore sizes in imperial dimensions.

Technical Specifications
Cylindrical shaft with keyway specifications, including diameter, keyway dimensions, usable shaft length, clearance fit, press fit, metric coupling size, set screw presence, clamping elements, taper shaft end dimensions.

Procedures and Measurements
Details on taper shaft end, including diameters, gradient, wrench size, thread coupling size, thread length, spacer diameter, disc thickness, special output shaft specifications, distances between shaft ends, total installation length.

Recommendations and Considerations
Consideration for obstacles such as beams, protective grating, and pipes is advised.

Contact Information
Contact details for RINGSPANN and global partners, covering regions such as Europe, Asia, Africa, the Middle East, and the Americas.

Catalog excerpts

Shaft Couplings Flange Couplings • Cone Clamping Couplings • Gear Couplings • Disc Couplings Flexible Couplings • Grid Couplings • Pin and Bush Couplings • Jaw Couplings Edition 2019/2020 RINGSPANN® Registered trademark of RINGSPANN GmbH, B

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Shaft Coupling Introduction Rigid Shaft Couplings Torque load Transmission of torque shocks, very rough operation backlash free overload holding / fail safe Tru-Line Flange-Couplings RFK … TBO with backlash free cone clamping connection Cone Clamping Couplings RWK … EEO with backlash free connection of two shaft ends Torsionally Rigid Shaft Couplings Torque load Transmission of torque shocks, very rough operation backlash free overload holding / fail safe Gear Couplings RDZ … DTO with double engagement gearing RDZ … DFO with single engagement gearing RDZ … EEO with continuous sleeve, double engagement...

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Installation / alignment rigid / excellent rigid / roughly Permissible misalignments Ambient conditions Damping element wear parts Complies with Bore diameter Installation / alignment rigid / roughly Ambient conditions Damping element hazardous Complies with wear parts rigid / excellent Permissible misalignments Bore diameter Installation / alignment rigid / roughly Ambient conditions Damping element Complies with wear parts rigid / excellent Permissible misalignments true, well suited conditionally suitable, conditionally applicable

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Not shiftable 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 not shiftable couplings for almost all applications. For example, the rigid Tru-Line Flange-Couplings...

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Tru-Line Flange-Couplings RFK … TBO backlash free cone clamping connection 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 Order example Coupling design Coupling flange with hub type MSC Coupling flange with hub type FSC Coupling size of smaller coupling half 0050 Type Hub A, type: • Flange with Female Pilot • Flange with Male Pilot...

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Tru-Line Flange-Couplings RFK … TBO backlash free cone clamping connection Tru-Line FlangeCoupling RFK Size Coupling Half FSC MSC Female Male Pilot Pilot Flange connection screws Cone clamping screws Weight FSC or Tightening MSC 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. Mounting The installation and operating instruction for Tru-Line Flange-Couplings RFK...

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Cone Clamping Couplings RWK … EEO backlash free connection of two shaft ends Features • Comapct design • Easy to remove • 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 8-1 Order example Coupling design Pressure ring Cone bushing Coupling size Threaded ring Hub, design: • Clamping ring hub, clamping screws...

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Cone Clamping Couplings RWK … EEO backlash free connection of two shaft ends Max. transmissible torque or axial force Clamping screws Bending moments 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

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Gear Couplings RDZ … DTO torsionally rigid double engagement gearing – lubricated Features • 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 • Typical application: Roll drives in the steel and paper industry, pumps, conveyors, fans and blowers Order example Coupling design Coupling half, flexible...

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Gear Couplings RDZ … DTO torsionally rigid double engagement gearing – lubricated Coupling size from coupling size 0080 Moment of inertia with max. bore JK Permissible misalignments Weight with max. bore 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 68. • ** Minimum necessary s

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Gear Couplings RDZ … DFO torsionally rigid single engagement gearing – lubricated Features • 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 • Typical application: Roll drives in the steel and paper industry, pumps, conveyors, fans and blowers Order example Coupling design Coupling size Coupling half, rigid with hub B type I Gasket Coupling half, flexible Hub A, design: • finish bored with keyway • roughbored Hub B, type: • I, coupling half, rigid with hub Hub B, design: • finish bored...

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Shaft Couplings

Shaft Couplings

Catalog excerpts

All SIAM RINGSPANN catalogs and brochures