Torque limiters SL
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LIGHTWEIGHT AND COMPACT single-position multi-position full disengagement S TORQLIGHT ® SAFETY COUPLINGS SERIES SL | 10 – 700 Nm THE ULTIMATE COUPLING FROM 10 – 700 Nm www.rwcouplings.com SL_E.indd 1 22.05.12 10:48

single-position multi-position full disengagement SERIES SL DESIGN / FEATURES Extremely lightweight construction ■ Up to 60 % weight reduction in comparison to the standard series ■ Torque rating increased by 50 % ■ Good dynamic characteristics ■ Spring tensioned ball-detent principle with absolutely zero backlash ■ Corrosion resistant ■ Very simple torque setting TORQUE SETTING Torque scale These safety couplings are preset by R+W to the customer‘s specified values. Reference mark Changes to the preset value are very simple to make: ■ Loosen the adjustment nut‘s clamp screw. ■ Turn the...

single-position multi-position full disengagement MODELS SLN FEATURES POSSIBLE APPLICATIONS Spindle With clamping hub for indirect drives ■ ■ ■ ■ ■ Integral bearing for timing belt pulley or sprocket Compact, simple construction Torque setting is continuously variable Frictional clamp connection Simple to install Clamping hub Table Toothed belt Motor see page 4 SLP With keyway connection for indirect drives ■ ■ ■ ■ Integral bearing for timing belt pulley or sprocket Compact, simple construction Torque setting is continuously variable Simple keyed connection With keyway Spindle Table Toothed...

single-position multi-position full disengagement Production monitored Type tested MODEL SLN with clamping hub BACKLASH FREE TORQUE LIMITER A Actuation path N Ø DH7 Ø O1 Ø Eh7 ØO Ø O2 ØF Thread depth G I ISO 4762 J M L C Temperature range: -30 to +120°C Service life: These couplings are maintenance free and stable over their entire service life if technical limits are not exceeded Ø O3 K P Design: With clamp collar and screw per ISO 4762 Components of compact and rigid design with backlash free interface ØB R ISO 4762 H Fit tolerance: Overall clearance between shaft and hub 0.01-0.05 mm...

single-position multi-position full disengagement Production monitored Type tested MODEL SLP with pure keyway connection BACKLASH FREE TORQUE LIMITER A ØF Thread depth G Temperature range: -30 to +120°C Service life: These couplings are maintenance free and stable over their entire service life if technical limits are not exceeded Ø O1 Ø DH7 Actuation path N ØO Ø Eh7 Ø O2 K Fit tolerance: Overall clearance between shaft and hub 0.01-0.05 mm J R ISO 4762 Design: Keyway per DIN 6885 or ANSI standard dimensions Components of compact and rigid design with backlash free interface ØB DIN 6885...

single-position multi-position full disengagement Production monitored Type tested MODEL SL2 with clamping hubs and metal bellows BACKLASH FREE TORQUE LIMITER Design: Clamping hub with one ISO 4762 screw per hub. Components of compact and rigid design with backlash free interface. Misalignment compensation via torsionally rigid bellows A ØB P1 / P2 M1 I1 ISO 4762 Actuation path N Service life: These couplings are maintenance free and stable over their entire service life if technical limits are not exceeded Ø O2 Ø O1 Ø D2H7 C2 Ø D1H7 ØO Temperature range: -30 to +100°C Fit tolerance:...

single-position multi-position full disengagement Production monitored Type tested MODEL SLE with clamping hubs and elastomer insert BACKLASH FREE TORQUE LIMITER A ØB P1 / P2 M1 I1 ISO 4762 Keyway on request Actuation path N DE Design: Clamping hub with one ISO 4762 screw per hub. Components of compact and rigid design with backlash free interface. Misalignment compensation via elastomer insert Service life: These couplings are maintenance free and stable over their entire service life if technical limits are not exceeded Ø O1 Ø O2 Ø D2H7 C2 Ø D1H7 O Temperature range: -30 to +100°C Fit...

single-position multi-position ACCESSORIES BACKLASH FREE TORQUE LIMITER Spanner wrench for torque adjustment Order no.: see table Series 60 150 300 Order no.: min. 30 55/4 66/5 82/5 100/6 max. Mechanical limit switch (emergency OFF function) Order no.: 618.6740.644 Technical data Max. voltage: Max. constant current: Protective system: 500 V AC 10 A IP 65 Contact system: Opener (forced seperating) Temperature range: Actuation: PG 11 - 30 - +80 ˚C Plunger (metal) 10 20 62 16 22 8 Ø 4,2 4 30.6 Swith diagram: 31 Appox. distance 0,1-0,2 Ø 7,5 Attention: A 100 % test of the switch‘s functionality...

single-position multi-position GENERAL FUNCTION BACKLASH FREE TORQUE LIMITER Safety element functionality Single-position / multi-position Torque is transmitted through hardened ball bearings (4) arranged around the coupling’s circumference and loaded into conical detents (5) ■ The ball bearings are loaded into the detents by an actuation ring (3) which, in turn, is held in place by disc springs (2) ■ Disengagement torque is continuously adjustable through rotation of the adjustment nut (1) ■ In the event of overload the actuation ring (3) moves toward the disc springs (2) which are pushed...

single-position multi-position MOUNTING INSTRUCTIONS MOUNTING AND DISMOUNTING OF TORQUE LIMITERS Installation preparation The shafts and hub bores to be connected must be free of contaminants and burrs. Check shaft dimensions and tolerances (including key width and height dimensions). The bores of the R+W safety couplings are machined to an ISO H7 fit. For a clamp connection the overall clearance between shaft and hub must be between 0.01-0.05 mm. This fit clearance, along with oiling of shaft journals assists in installation and removal without reducing clamping force. Fretting corrosion...

single-position multi-position MOUNTING AND DISMOUNTING OF TORQUE LIMITERS SLE elastomer insert The elastomer insert is the compensating element in an SLE coupling. It transmits torque without backlash and damps shock and vibration. The SLE couplings elastomer insert determines the hysteresis characteristics of the entire rotational axis, and is available in two different designs. Distance dimension Elastomer insert Hub A When the coupling hubs are pushed together during installation, axial force is needed to overcome the elastomer insert‘s preload tension. The amount of force required can...