TORQUE LIMITERS

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Full disengagement Series ST TORQUE LIMITERS Areas of application for the ST Heavy duty applications ■ Rolling mills ■ Dredgers ■ Steel mills ■ Industrial shredders ■ Industrial conveyors ■ Wind turbines ■ Extruders ■ Wastewater management ■ Tunnel boring machines ■ and much more Features of the ST ■ Compact, simple design ■ Full disengagement ■ Robust ■ Precise overload protection ■ Torsionally rigid ■ Adjustable torque setting ■ Infinite life and maintenance free RELIABLE TORQUE OVERLOAD PROTECTION Use of ST torque limiters will minimize machine downtime due to crashes and increase the availability and productivity of your machine. ST torque limiters are designed for high torque applications. This is achieved through the use of individual torque modules evenly spaced around the circumference of the coupling. The ST torque limiter is based on a spring loaded, ball-detent design. The transmittable torque is determined by the number of torque modules and their distance from the center of the coupling. In the event of an overload, the balls exit the detents in the axial direction, resulting in a permanent separation of the drive and driven elements. An axial force on the plunger re-engages the torque module. The sealed torque module design prevents contamination by dirt and debris. The torque module consists of two components. These include the adjustable housing and plunger core. The set torque is easily visible on a scale. 2 R+W www.rwcouplings.com
Full disengagement MODELS FEATURES POSSIBLE APPLICATIONS ST 1 STN ST 2 with keyway connection for indirect drives ■ Compact, simple design ■ Precise overload protection ■ Torsionally rigid ■ Integral bearings for timing belt pulley or sprocket with conical clamp connection for indirect drives ■ High clamping force ■ Compact, simple design ■ Precise overload protection ■ Torsionally rigid ■ Integral bearings for timing belt pulley or sprocket with keyway connection and elastomer coupling ■ Vibration damping ■ Compensation for misalignment ■ Precise overload protection Drive shaft Drive shaft Motor Timing belt pulley Motor Timing belt pulley Elastomer coupling see page 4 see page 5 Motor Motor Motor ST 3 with keyway connection and disc coupling ■ Torsionally rigid ■ Compensation for misalignment ■ Precise overload protection Disc coupling see page 8 Motor ST 4 with keyway connection and gear coupling ■ High torque density ■ Compensation for misalignment ■ Precise overload protection Gear coupling ends see page 7 see page 10 www.rwcouplings.com R+W 3
Page 1 and 2: COMPACT AND BACKLASH FREE. single-p
Page 3 and 4: single-position multi-position load
Page 13 and 14: MODEL SK3 BACKLASH FREE TORQUE LIMI
Page 19 and 20: MODEL ATEX FOR USE IN HAZARDOUS ARE
Page 29 and 30: FACTORS AND SIZING CALCULATIONS BAC
Page 33: ROBUST AND COMPACT Full disengageme
Page 37 and 38: Full disengagement MODEL STN TORQUE
Page 39 and 40: Designs for Direct Drives with inte
Page 41 and 42: MODEL ST 2 The elastomer segments T
Page 43 and 44: MODEL ST 4 Function of the gear cou
Page 45 and 46: MODEL ATEX FOR USE IN EXPLOSIVE ATM
Page 47 and 48: MODEL ST Ordering example Model Ser
Page 49 and 50: SELECTION According to linear feed
Page 51 and 52: SELECTION Specifications of gear co

TORQUE LIMITERS

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