- Catalogs
- SIAM RINGSPANN
- Shaft-Hub-Connections RINGSPANN : Shrink Discs, Cone Clamping Elements, Star Discs, Clamping Elements, Star Spring Washers
Shaft-Hub-Connections RINGSPANN : Shrink Discs, Cone Clamping Elements, Star Discs, Clamping Elements, Star Spring Washers
Shaft-Hub-Connections RINGSPANN : Shrink Discs, Cone Clamping Elements, Star Discs, Clamping Elements, Star Spring Washers
This document offers a detailed overview of RINGSPANN's shaft-hub connections, including shrink discs, cone clamping elements, star discs, and clamping systems for torque motors. It highlights their specifications, design, and functionality, focusing on their ability to transmit torque, axial forces, radial forces, and bending moments.
These connections are crucial for linking shafts and hubs, providing advantages like higher torque transmission compared to traditional keyways. Shrink discs and cone clamping elements are noted for their compact and cost-effective design.
Shrink discs are external clamping connections used for backlash-free fastening of hollow shafts or hubs to shafts, generating radial forces through conical surfaces for optimal centering and torque transmission.
These internal clamping connections fasten hubs on shafts, creating a frictional connection suitable for components like sprockets and pulleys.
Star discs are ideal for applications requiring frequent clamping and release, providing backlash-free connections for reversing operations and simultaneous torque and axial force transmission.
These systems ensure secure, backlash-free torque transmission and precise centering of torque motors on machine shafts.
These washers act as light spring elements in precision machines, reducing noise in ball bearings and compensating for free movement.
The document details a calculation method for accurate preload forces in shaft-hub connections, accounting for friction-coefficient fluctuations to prevent dimensioning errors.
An online tool is available for calculating optimal shaft-hub connections, offering reliable results for hub dimensions, bearing pressures, and transmissible torques and axial forces.
Shrink discs consist of an outer stepped conical ring and an inner stepped conical bush, generating radial clamping forces independent of friction coefficients for a secure frictional connection.
Shrink Discs connect hollow shafts or hubs to solid shafts, providing a backlash-free connection that reduces fretting corrosion risk and allows easy disassembly after long operation periods.
- RLK 606: Two-part design with high torque capacity, suitable for various shaft diameters.
- RLK 603: Three-part design offering high torque capacity, capable of transmitting torque and axial force simultaneously.
- RLK 603 S: Similar to RLK 603 but with the highest torque capacity, designed for hollow shafts or hubs with specific outer diameters.
Detailed tables list dimensions, transmissible torque or axial force, clamping screws, and weights for various Shrink Disc sizes, including article numbers for ordering.
Shafts and hollow shafts should have a yield strength of at least 340 N/mm² and an E-module of approximately 206 kN/mm². Installation and operating instructions are available upon request.
Examples for ordering specific Shrink Discs are provided, emphasizing the importance of selecting correct fits to maintain joint clearance within specified ranges.
The document provides technical specifications and guidelines for Cone Clamping Elements, specifically models RLK 110, RLK 110 K, RLK 130, and RLK 131, used to center the hub to the shaft for high transmissible torques and axial forces.
- Surface Roughness: Average surface roughness at contact surfaces is Rz = 10…25 µm.
- Materials: Shaft and hub require an E-module ≥ 170 kN/mm².
- Tolerances: h8 for shaft diameter and H8 for hub bore.
Installation and operating instructions for Cone Clamping Elements are available upon request, with transmissible torques or axial forces subject to specific tolerances and material requirements.
Detailed tables list transmissible torques and axial forces for various shaft diameters and hub bores, noting that simultaneous transmission reduces values.
- RLK 110 K: Nickel-coated for high corrosion resistance, suitable for small hub diameters, with no axial displacement during clamping.
- RLK 130: Very high transmissible torques, suitable for specific shaft diameters.
- RLK 131: No axial displacement during clamping, suitable for specific shaft diameters.
Examples include connecting an eccentric wheel to a drive shaft in a packaging machine and a cam disc to a drive shaft in a paper processing machine.
Examples for ordering specific Cone Clamping Elements are provided, including article numbers and size specifications.
The document provides technical specifications and guidelines for Star Discs and Clamping Systems, focusing on torque motors and their integration with machine shafts.
Various sizes and technical data for Star Discs are listed, including dimensions, transmissible torque, contact pressure, preload force, and weight. Detailed specifications for clamping systems designed for torque motors are also provided.
Star Discs support frequent clamping and loosening with a short axial width. The outer diameter is supported in the hub bore, and axial actuation force must be applied at the inner diameter's front side.
Several clamping systems are described, ensuring secure, backlash-free torque transmission and precise centering of torque motors on machine shafts.
Torque motors are high-performance, direct drive motors capable of high torque at low RPMs, designed for high repetition and control accuracy, low energy consumption, and ease of maintenance.
Used as compensating discs in ball bearings to accommodate axial variations and reduce noise, characterized by large axial movement and suitability for precision machines.
Consultation with the manufacturer is advised for applications involving simultaneous transmission of torque and axial force. Guidelines for the maximum number of Star Discs in a pack and the importance of not exceeding preload force are provided.
Axial preloading of ball bearings using Star Spring Washers eliminates radial play, improving radial load distribution and service life, particularly beneficial for high-speed machines.
- Axial pressure must be applied to the entire outer race.
- Axial variations and length tolerances should minimally affect the applied spring force.
- The load must be adapted to the bearing size.
Star Spring Washers protect non-rotating bearings from vibration damage, preventing rotor vibration and subsequent wear.
Star Spring Washers are used in spindle ball bearings for grinding spindles, ensuring maximum tracking accuracy at high speeds.
Detailed tables list dimensions, spring travel, pressure, and spring constants for various Star Spring Washer models.
For optimal performance, Star Spring Washers should be mounted on the outer ring of the ball bearing. If axial pressures vary, washers should be mounted on both sides of the bearings.
Contact details for RINGSPANN offices and distributors worldwide are provided, including locations in Europe, Asia, Africa, the Middle East, and the Americas.
Catalog excerpts
Shaft-Hub-Connections Shrink Discs • Cone Clamping Elements • Star Discs Clamping Systems for torque motors • Star Spring Washers Edition 2022/2023 RINGSPANN® Registered Trademark of RINGSPANN GmbH, Bad Hom
Open the catalog to page 1
Frictional shaft-hub-connections Categories of RINGSPANN shaft-hub-connections Ensured Torques with the RINGSPANN Calculation Method Online Calculation Tool shaft-hub-connections Max. transmissible torque upto Shaft diameter Shrink Discs standard short Clamping Noaxial Actuating element displacement device centres ofthehub integrated thehubto totheshaft (screws) theshaft during clamping Design and Function of Shrink Discs RLK 608 Covers for Shrink Discs RLK 608 and RLK 606 RLK 603 Technical Points for Shrink Discs Shaft diameter Cone Clamping Elements Max. transmissible torque upto standard short...
Open the catalog to page 2
Max. transmissible torque upto Shaft diameter Star Discs standard short Clamping Noaxial element displacement centres ofthehub thehubto totheshaft theshaft during clamping Actuating device integrated (screws) Design and Function of Star Discs Clamping Connections with Star Discs Star Discs Technical Points for Star Discs Max. transmissible torque upto Shaft diameter Clamping Systems for torque motors standard short Clamping Noaxial element displacement centres ofthehub thehubto totheshaft theshaft during clamping Actuating device integrated (screws) Clamping Systems for torque motors RTM 601...
Open the catalog to page 3
Trantorque Mini Star Discs Star Spring Washers
Open the catalog to page 5
Frictional shaft-hub-connections Why frictional shaft-hub-connections? Frictionalshaft-hub-connectionsarestandard machine elements used to connect shafts and hubs. They are capable of transmitting torque,axialforces,radialforcesandbending moments. ShrinkDiscsandConeClampingElements Among the frictional shaft-hub-connections ShrinkDiscsandConeClampingElementstake animportantposition.Bytighteningclamping screws conical surfaces are pulled together generatingradialforces;theseforcesprovide therequiredfrictionalconnectionbetweenthe partsinvolvedinthetransmissionoftorquesor forces. ShrinkDiscsandConeClampingElementsare...
Open the catalog to page 6
Categories of RINGSPANN shaft-hub-connections Shrink Discs ShrinkDiscsareexternalclampingconnections forthebacklashfreefasteningofhollowshafts orhubstoshafts.Bytighteningclampingscrews conicalsurfacesarepulledtogethergenerating radialforces;theseforcespressthehollowshaft ontotheshaft.Torquesoraxialforcescanbe transmittedfrictionallyfromthehollowshaftto theshaft.TheShrinkDiscitselfisnotinvolvedin thetransmissionoftorquesoraxialforces.The radialclampingforceswhichactthroughthe circumferenceofthehollowshaftalsoensure anoptimumcentringtotheshaft. Shrink Discs are used, for example, to fasten machineshaftstogearboxeswithhollow-shafts....
Open the catalog to page 7
Ensured Torques with the RINGSPANN Calculation Method The RINGSPANN calculation method ensures thatsucherrorsinthedimensioningofshafthub-connectionsareavoided.Thisisachieved byusingamethodthathasbeentestedand provenovermanyyears,accordingtowhichthe realfrictioncoefficientμK inthecontactarea Simplified calculation method without accounting for friction-coefficient fluctuations Standard Berechnungsmethode RINGSPANN Berechnungsmethode RINGSPANN calculation method accounting for friction-coefficient fluctuations undertheheadofthescrewandμG inthescrew threading lie between 0,12 and 0,14. This conformstocurrentengineeringstandardsas...
Open the catalog to page 8
Online Calculation Tool shaft-hub-connections ThenewRINGSPANNCalculationToolhasbeen developedtoworkouttherightandtime-efficient dimensioning of an optimal shaft-hubconnection. WhetheraConeClampingElementoraShrink Disc,reliableresultsconcerningthenecessary hubdimensionsandbearingpressurescanbe determinedwithinafewminutes,aswellasthe transmissibletorquesandaxialforcesfordifferentstrengths,torquesandnumbersofscrews. Thismeansthatanyoversizingorundersizing of the elements can be avoided and a costoptimisedsolutionfoundfortheapplicationin question. Theuseofthetoolsisintuitivelydesignedand thecalculationresultsareavailableafterjusta...
Open the catalog to page 9
Design and Function of Shrink Discs Two-part Shrink Discs Design and Function Two-part shrink discs consist of an outer stepped conical ring, and an inner stepped conicalbush,aswellasanumberofclamping screws(seeFigure10-1). The stepped conical ring is pulled onto the steppedconicalbushbytighteningtheclamping screws. A radial clamping force is generatedbytheconicalsurfaces,whichisindependentofthefrictioncoefficientsatthescrews andconicalsurfaces.Theradialclampingforce presses the hollow shaft onto the shaft and createsafrictionalconnectionatthecontact surfaces between the shaft and the hollow...
Open the catalog to page 10
Design and Function of Shrink Discs Three-part Shrink Discs Pressureflange Innerring Three-part shrink discs consist of a threaded flange,apressureflange,aslottedinnerringand anumberofclampingscrews(seefigure11-1). Hollowshaft Clampingscrews Thethreadedflangeandthepressureflange are pulled together over the inner ring by tightening the clamping screws. A radial clamping force is generated by the conical surfaces which is dependent on the friction coefficientsatthescrewsandconicalsurfaces. Theradialclampingforcepressesthehollow shaftontotheshaftandcreatesafrictionalconnection at the contact surfaces...
Open the catalog to page 11
Shrink Discs RLK 608 two-part design highest torque capacity Features • Highesttorquecapacity • Transmissibletorqueof330Nmupto 4225000Nm • Easy,quickassemblybytightening clampingscrewswithoutatorquewrench • Distance-controlledassemblyensures guaranteedtransmissibletorques • Encloseddesign,thereforeimpervious todirt • Truerunningevenathighspeeds • Centresthehollowshaftorhubtotheshaft • Forhollowshaftsorhubswithouter diametersof30mmupto620mm 12-1 Application example Backlash free connection of a hollow-shaft gearboxtoamachineshaftwithaShrinkDisc RLK608.Thebacklashfreeconnectionreduces the risk...
Open the catalog to page 12
Shrink Discs RLK 608 two-part design highest torque capacity Shrink Disc released Shrink Disc clamped 13-1 Articlenumber Weight
Open the catalog to page 13All SIAM RINGSPANN catalogs and technical brochures
Overlaod Clutches RINGSPANN80 Pages
Industrial Brakes RINGSPANN200 Pages
RINGSPANN Company7 Pages
Shaft Couplings RINGSPANN76 Pages
Internal Freewheels FZ6 Pages
Express Push/Pull cable4 Pages
- Chuck
- Flexible coupling
- Shaft shaft coupling
- Friction brake
- Flange coupling
- Metal spring
- Rigid coupling
- Transmission coupling
- Spring brake
- Zero-backlash shaft coupling
- Disc brake
- Electromagnetic brake
- Friction brake caliper
- High-precision chuck
- Disc brake caliper
- Workpiece clamping chuck
- Compression spring
- Spring brake caliper