Flexible Couplings MD /

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1 D /2007

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3 Flender Couplings D /2007 Catalog D /2007 ummary of Basic Types Basic Principle Characteristic Features 2 3 Design and Operation election of the Coupling ize 5 Design ints for the Installation 9 IEC RUPEX RUPEX Couplings for IEC otors 11 RWN, RW, RWB RB Types RWN, RW, RWB and RB 12 IO Alignment Tolerances election of IO Fits, Parallel Keys 21 Examples of pecial Designs 23 3 ATEX 95 Explosion Protection According to ATEX

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5 About iemens in China: iemens AG, founded in 1847, is a global technology powerhouse active in more than 200 countries, focusing on the areas of electrification, automation and digitalization. One of the world s largest producers of energy-efficient and resource-saving technologies, iemens has leading positions in offshore wind turbine construction, combined cycle turbines for power generation, power transmission solutions, infrastructure solutions, automation, drive and software solutions, as well as medical imaging equipment and laboratory diagnostics. For more than 140 years since its entering into China in 1872, iemens has pioneered cooperation with the country with its solutions, technologies and products, and has been known in the country for its quality and reliability, technological excellence and innovation. In Fiscal Year 2014 (October 1, 2013 eptember 30, 2014), iemens generated revenue of 6.44 billion in China, with more than 32,000 employees. iemens has become an integral part of the Chinese economy and society, and continues to partner with the country to address her pursuit of sustainable development. iemens D /2007 lll

6 ummary of Basic Types Type RWN ( RWN (grey cast iron) - RW ( ) - RW (steel) Arrangement of bolts and buffers on one side Arrangement of bolts and buffers on alternating sides / up to size 360 / from size 400 Type RWB ( RWB (grey cast iron) - RB ( ) - RB (steel) / size iemens D /2007

7 Basic Principle RUPEX Basic Principle RUPEX couplings consist of two coupling parts, the steel bolts and the flexible buffers of plastic. The bolts with buffers, which are mounted on one side up to size 360, and on alternate sides from size 400, engage the bores of the appropriate counterparts. RWN RWB: GG - 25 RWB: GGG - 40 RW RB: aterial: Types RWN and RWB: coupling hubs and brake drums of cast iron GG-25. Type RWB: brake disks of GGG-40. Types RW and RB: coupling hubs, brake drums and brake disks of steel. All products marked ex Flender stock are offered subject to prior sale.the weights shown in the tables are mean values and, like the illustrations, are not strictly binding. (DIN 34) Changes in dimensions and technical specifications are possible because of further development of the product. This brochure is protected by copyright (DIN 34). iemens D /2007 3

8 Characteristic Features RUPEX Description RUPEX couplings are used in all applications requiring an absolutely reliable transmission of torque. RUPEX Nm 1,300,000Nm Wide range of applications The RUPEX couplings of six different types cover a wide range of requirements. Available in 26 different sizes, couplings are available for a range of torques extending from 200 to 1,300,000 Nm. The RUPEX couplings with steel hubs allow the coupling to be used at high speeds. Angular, radial and axial flexibility Due to the barrelled shape of the flexible elements (the buffers) which are moveable in their seating holes, angular, radial and axial shaft displacements can be balanced as required. RUPEX Torsionally flexible and vibration damping RUPEX couplings damp torque impacts and allow shifting of critical speeds. RUPEX Fail-safe RUPEX couplings are fail-safe up to the shear torque of the metallic parts which is many times the permissible impact torque. They therefore offer the greatest possible operational reliability. RUPEX Independent of the direction of rotation RUPEX couplings can be used for both directions of rotation and are therefore suitable for reversing operation. Low maintenance Assuming correct coupling design and correct alignment at assembly, the buffers which are subjected only to compression during torque transmission, have a long life. RUPEX pecial designs possible RUPEX couplings can also be adapted for special requirements in many respects. Numerous different designs for special applications, all of which have been previously used and proven, are possible.our Project Department will be pleased to advise you. / Fig. 4.1 RUPEX ( 4.1) Easy to install The convex buffers in the RUPEX couplings can be pushed into position. Both bolts and buffers can be replaced without any axial movement of the motor or machinery. Uncoupled machinery can be radially dismantled (fig. 4.1). 4 iemens D /2007

9 Design and Operation RUPEX Function For decades, RUPEX couplings have proven their worth as absolutely reliable and virtually maintenance-free machine components in all fields of mechanical engineering, in particular in heavy-duty drive systems. The positive-locking torque transmission is achieved by flexible elements which are subjected to compression only which causes elastic deformation. (5.1) The progressive spring characteristic and excellent damping characteristics of the buffers effectively counteract the dangerous build-up of rotational vibrations (fig. 5.1). The optimized barrelled shape of the buffers favours the compensating function for existing axial and radial displacement. Restoring forces are minimized. Due to their conical seating, the ground bolts are fixed free of any play. This effectively prevents reaming of the seating holes and formation of fretting corrosion. hafts and machinery can be dismantled without any axial movement simply by removing the bolts and buffers C + 80 C The buffers can be used at ambient temperatures from -30 C up to +80 C. They are electrically conductive and resistant to oil and other media. / Fig. 5.1 Torsional spring rate and torsion angle iemens D /2007 5

10 1. RUPEX election of the Coupling ize 1. Design for RUPEX couplings in continuous operation The operating torque is derived from: T N = 9550 x P n N T N = (Nm) P = (kw) n N = (min -1 ) T N = Nominal torque of the system (Nm) P = Input power rating (kw) n N = Coupling speed (min -1 ) The required nominal coupling torque T KN is derived from: T KN T N x f 1 T KN = (Nm) f 1 = 7.II T KN = Nominal coupling torque (Nm) f 1 = ervice factor acc. to table 7.II 2. Consideration of brief shock loads When starting up or braking drive systems, three times the nominal coupling torque is permissible up to 25 times per hour: T Kmax = 3 x T KN T T Kmax = (Nm) T Kmax = aximum coupling torque (Nm) T = (Nm) T = aximum brief impact torque (Nm) election of coupling When selecting the coupling, both the desired geometry and the permissible coupling speed must be taken into account. RUPEX 48 m6 55 m6 Calculation example Required: A RUPEX coupling for a travelling gear drive located between the electric motor and gear unit. otor shaft diameter 48 m6 and gear shaft diameter 55 m6. : P = 75 kw Electric motor: P = 75 kw n = 1430 min-1 peed: n = 1430 min-1 P 2 = 62 kw Gear unit: P 2 = 62 kw C tarts per hour: Ambient temperature: C T N = 9550 x 75 kw = Nm 1430 min -1 7.I 7.II f 1 = 1.75 Load classification symbol from table 7.I = ervice factor from table 7.II f 1 =1.75 T KN Nm x 1.75 = Nm RUPEX RWN 178 T kn = 950Nm n max = 3800 min RUPEX RWN DIN DIN elected: RUPEX coupling type RWN, size 178 with T KN = 950 Nm. Verification of the maximum speed of n max = 3800 min -1 confirms that it is greater than the operating speed. The desired finished bores comply with the permissible bore range (page 13). Ordering example: RUPEX coupling RWN 178 Part 1: bore 48 7 with keyway to DIN and set screw Part 2: bore 55 7 with keyway to DIN and set screw 6 iemens D /2007

11 DIN 740 / 2 f 1 7.II 7.I BIPEX [ C ] - 30 C Tu + 80 C 25 7.I G G G G G G G G T N 75 Nm T N 75 Nm T N > 75 Nm T N 75 Nm T N 75 Nm T N > 75 Nm T N 75 Nm T N 75 Nm T N > 75 Nm T N 75 Nm T N 75 Nm T N > 75 Nm T N 75 Nm T N 75 Nm T N > 75 Nm G G G G G G G G G = = = Nm 7.II f : : : 200 G iemens D /2007 7

12 election of the Coupling ize For the service factors empirical values were taken as a basis which generally assess the performance of input and output combinations in service. Predominant periodic excitation of the plant or starting and braking of large masses require a design according to DIN 740/2 or vibration calculations which can also be ordered from us. Data for calculations are available, if required. When selecting the size of a coupling, the service factor f 1 of table 8.II depending on the specific load classification symbol of table 8.I must be allowed for. Application of the RUPEX coupling Ambient temperature in C: -30 C T u +80 C Design and alignment in accordance with catalogue specification or operating instructions. Up to 25 starts per hour. 8.I Load classification symbols listed acc. to applications and industries U U U U U U U U U Blowers, Ventilators Rotary piston blowers T N 75 Nm Rotary piston blowers T N 750 Nm Rotary piston blowers T N >750 Nm Blowers (axial/radial) T N 75 Nm Blowers (axial/radial) T N 750 Nm Blowers (axial/radial) T N >750 Nm Cooling tower fans T N 75 Nm Cooling tower fans T N 750 Nm Cooling tower fans T N >750 Nm Induced draught fans T N 75 Nm Induced draught fans T N 750 Nm Induced draught fans T N >750 Nm Turbo blowers T N 75 Nm Turbo blowers T N 750 Nm Turbo blowers T N >750 Nm Building machinery Concrete mixers oists Road construction machinery Chemical industry Agitators (liquid material) Agitators (semi-liquid material) Centrifuges (heavy) Centrifuges (light) Cooling drums Drying drums ixers Compressors Piston compressors Turbo compressors Conveyors Apron conveyors Ballast elevators Band pocket conveyors Belt conveyors (bulk material) Belt conveyors (piece goods) Bucket conveyors for flour Chain conveyors Circular conveyors Goods lifts oists Inclined hoists Link conveyors Passenger lifts crew conveyors teel belt conveyors Trough chain conveyors auling winches Cranes Derricking jib gears oisting gears Luffing gears lewing gears Travelling gears Dredgers Bucket conveyors U U U U Bucket wheels Cutter heads anoeuvring winches Pumps lewing gears Travelling gears (caterpillar) Travelling gears (rails) Food industry machinery Bottling and container filling machines Cane crushers Cane knives Cane mills Kneading machines ash tubs, crystallizers Packaging machines ugar beet cutters ugar beet washing machines Generators, transformers Frequency transformers Generators Welding generators Laundries Tumblers Washing machines etal rolling mills Billet shears Chain transfers Cold rolling mills Continuous casting plants Cooling beds Cropping shears Cross transfers Descaling machines eavy and medium plate mills Ingot and blooming mills Ingot handling machinery Ingot pushers anipulators Plate shears Plate tilters Roller adjustment drives Roller straighteners Roller tables (heavy) Roller tables (light) heet mills Trimming shears Tube welding machines Winding machines (strip and wire) Wire drawing benches etal working machines Countershafts, line shafts Forging presses ammers achine tools, auxiliary drives achine tools, main drives etal planing machines Plate straightening machines Presses U U U Punch presses hears heet metal bending machines Oil industry Pipeline pumps Rotary drilling equipment Paper machines Calenders Couches Drying cylinders Glazing cylinders Pulpers Pulp grinders uction rolls uction presses Wet presses Willows Plastic industry machinery Calenders Crushers Extruders ixers Pumps Centrifugal pumps (light liquids) Centrifugal pumps (viscous liquids) Piston pumps Plunger pumps Pressure pumps Rubber machinery Calenders Extruders ixers Pug mills Rolling mills tone and clay working machines Ball mills Beater mills Breakers Brick presses ammer mills Rotary kilns Tube mills Textile machines Batchers Looms Printing and dyeing machines Tanning vats Willows Water treatment Aerators crew pumps Wood working machines Barkers Planing machines aw frames Wood working machines U = Uniform load = edium shock load = eavy shock load T N = Nominal torque of prime mover (Nm) Listed load classification symbols may be modified after giving exact details of operating conditions. 8.II ervice factor f 1 (daily operating period up to 24 hours) Prime mover Load symbol of driven machine U Electric motors, Turbines, ydraulic motors Piston engines 4-6 cylinders cyclic variation 1 : : 200 Piston engines 1-3 cylinders cyclic variation to 1 : iemens D /2007

13 . RUPEX Design ints for the Installation 1. Flexible coupling buffers Uninterrupted transmission of torque and reliability of operation cannot be guaranteed unless original RUPEX buffers are used.. RWN RW RWB RB. 22.I DIN II 2. Arrangement of the coupling parts The arrangement of the coupling parts of types RWN and RW on the shaft ends to be connected is optional. Both horizontal and vertical installation are possible. With types RWB and RB, the brake drum or brake disk should be mounted on the shaft end on which the largest mass moment of inertia is acting. 3. Bores For the tolerance zones assigned to the finished bores, refer to table 22.I (selection of fits). aximum finished bores on pages 13 to 20 apply to keyways acc. to DIN to table 22.II.. RUPEX DIN II DIN 916 DIN 6885 DIN 6885 I 60% 4. ecuring the coupling RUPEX couplings are usually provided with parallel keyways acc. to DIN 6885 part 1 (table 22.II) and set screw acc. to DIN 916. Taper keyways acc. to DIN 6886, stressed-type fastening from the inside of the hub, are possible. For this design, however, it must be ensured that the maximum bores are only 60% of those permitted for parallel keyways acc. to DIN 6885 part afety precautions Rotating parts must be protected by the purchaser to prevent accidental contact (legislation of October 23 rd 1992 on technical working equipment). For products supplied to customers abroad, the safety regulations in the country in question must be taken into consideration. 6. upporting the shaft ends The shaft ends to be connected must be supported directly in front of and behind the coupling.. ( DIN 740/2) G16DIN 740n = 1500 min -1 v max = 30 m/s (DIN - IO 8821) v > 30 m/s 10.II G Balancing (acc. to DIN 740/2) General remarks: The balancing quality of all coupling hubs with finished bores accords at least with G16 (to DIN 740 for n = 1500 min -1 or v max. = 30 m/s, for balancing in one plane). Balancing is carried out with half parallel key (DIN-IO 8821). To be agreed: If operating or plant behaviour requires a higher balancing quality, this must be agreed separately. For peripheral speeds of v > 30 m/s (see 10.II), we recommends a balancing quality of G6.3, which can be carried out in two planes, if required, and must also be ordered separately. If balancing is required with full parallel key, this must be expressly stated. iemens D /2007 9

14 Design ints for the Installation 10. II 1800 n ( mi n- 1 ) peed n ( mi n- 1 ) Balancing required d a (mm) Outside diameter d a (mm). DIN Vibration calculations For selection acc. to DIN 740 part 2 and for vibration calculations literature is available, if required. Vibration calculations can also be ordered from our design department.. RUPEX 9. Installation and putting into service For installation and start-up of RUPEX couplings, always observe the operating instructions. Alignment: isalignments of the coupling parts may result from an inexact alignment during the assembly but also from the operation of the plant (expansion due to heat, bending of the shaft, machine frame too soft, etc.). RUPEX 21.I RUPEX couplings compensate for misalignments between the machines connected. When aligning, the radial and angular misalignment of the shaft ends should be kept to a minimum, as this prolongs the life of the buffers under otherwise identical operating conditions. The coupling must be installed and aligned in accordance with our operating instructions. The maximum displacement figures given in table 21.I are intended for general guidance. 10 iemens D /2007

15 IEC for IEC otors DIN G 7.I C + 80 C = Three-phase motors with squirrel-cage rotors according to DIN part 1 of April The assignment of the couplings to the electric motors applies to: Load classification symbol U to table 8.I Impact-free operation Up to 25 starts per hour, although three times the torque is permissible for short periods during start-up. Installation and alignment in accordance with operating instructions. Ambient temperatures or machine shaft end temperatures of -30 C to + 80 C. = available ex our stock / Types RWN / RW ød IEC RUPEX l w1 a b s Fitting dimensions of IEC motors For dimensions of RUPEX couplings, see pages 13 to I IEC P RUPEX Power ratings P of IEC motors and assigned RUPEX couplings P RUPEX P RUPEX P RUPEX P RUPEX IEC dx l / to /at /at /at /at DIN 748/1 Three phase Coupling Coupling Coupling Coupling Fitting dimensions motor n w n w n w n w of IEC motors ~ 3000 ~ 1500 ~ 1000 ~ 750 min -1 min -1 min -1 min -1 ize ize ize ize ize h a b w 1 s min -1 kw kw kw kw mm mm mm mm mm mm x x x x x L x L x x x x x L x x L x L x x110 60x x140 65x x140 75x x140 80x iemens D /

16 RWN / Pages RW / Pages RWB/RB / Pages RWB/RB / Pages iemens D /2007

17 RWN Type RWN (Grey Cast Iron) For the connection of two shaft ends w 1 u u 1 Part 1 1 P u 2 Part 2 1 Part 1 P 1 u 2 Part 2 1 Part 1 P 1 u 2 Part 2 d a d 1 D 1 l l l l D 2 d 2 d a d 1 D 1 D 2 d 2 d a d 1 D 1 l l D 2 d 2 / izes / izes / izes I T KN, n max,, J Nominal torques T KN, speeds n max, dimensions, mass moments of inertia J and weights ize Nominali torque peed 1) from Bore ass moment of inertia Weight J to 2) 2) / Part T KN n max D 1/2 D 1 D 2 d a d 1 d 2 l P 1 W 1 u Nm min -1 mm mm mm mm mm mm mm mm mm mm mm kgm 2 kgm 2 kg kg ) ) JD 1 D 2 = 1) Coupling parts 1 and 2 of sizes up to and including 228 without finished bore are supplied unbored. 2) ass moments of inertia J and weights refer to couplings with medium-sized bores D 1 and D 2. = available ex our stock iemens D /

18 RWN Type RWN (Grey Cast Iron) For the connection of two shaft ends u 1 Part 1 P 1 u 2 Part 2 d a d 1 D1 v l v v l v D 2 d 2 / izes I T KN, n max,, J Nominal torques T KN, speeds n max, dimensions, mass moments of inertia J and weights ize Nominal peed torque of inertia / from / J 2) 2) KN n max D 1/2 d a d 1/2 l v P 1 u / per Part 1/2 Nm min -1 mm mm mm mm mm mm mm mm mm kgm 2 kg > 140 > > 140 > > > > 180 > > 220 > > 240 > > 200 > 250 > > 230 > 280 > > 260 > 320 > > 320 > 380 > > 380 > 440 > > 440 > 500 > 560 Bore ass moment Weight ) JD 1 D 2 3) D + 1 mm = 2) ass moments of inertia J and weights refer to couplings with medium-sized bores D 1 and D 2. 3) Diameter of central hub recess = D + 1 mm. = available ex our stock 14 iemens D /2007

19 RW Type RW (teel) For the connection of two shaft ends 1 Part 1 P 1 u w 1 2 Part 2 1 Part 1 P 1 u u 2 Part 2 1 Part 1 P 1 u u 2 Part 2 d a d 1 D 1 l l l l D 2 d 2 d a d 1 D 1 D 2 d 2 d a d 1 D 1 l l D 2 d 2 / izes / izes / izes I T KN, n max,, J Nominal torques T KN, speeds n max, dimensions, mass moments of inertia J and weights ize Nominal torque peed 1) from Bore to ass moment of inertia J T KN n max D 1/2 D 1 D 2 d a d 1 d 2 l P 1 W 1 u Nm min -1 mm mm mm mm mm mm mm mm mm mm mm kgm 2 kgm 2 kg kg Weight 2) 2) / Part ) ) JD 1 D 2 = 1) Coupling parts 1 and 2 of sizes up to and including 228 without finished bore are supplied unbored. 2) ass moments of inertia J and weights refer to couplings with medium-sized bores D 1 and D 2. = available ex our stock iemens D /

20 RW Type RW (teel) For the connection of two shaft ends u 1 Part 1 P 1 u 2 Part 2 d a d 1 D1 v l v v l v D 2 d 2 / izes I T KN, n max,, J Nominal torques T KN, speeds n max, dimensions, mass moments of inertia J and weights ize Bore Nominal peed ass moment Weight torque of inertia 3) / from / J 2) 2) T KN n max D 1/2 d a d 1/2 l v P 1 u / per Part 1/2 Nm min -1 mm mm mm mm mm mm mm mm mm kgm 2 kg > 165 > > 165 > > 190 > > 210 > > 210 > 240 > > 230 > 260 > > 240 > 270 > > 270 > 300 > > 310 > 350 > > 370 > 410 > > 440 > 480 > > 500 > 540 > 610 2) JD 1 D 2 3) D + 1 mm ) ass moments of inertia J and weights refer to couplings with medium-sized bores D 1 and D 2. 3) Diameter of central hub recess = D + 1 mm iemens D /2007

21 RWB Type RWB (Grey Cast Iron) DIN Design with brake drum acc. to DIN b 1 P u 1 Part 1 3 Part 3 d a d 1 D 1 l D 3 d 3 d B 17.I T KN, n max,, J Nominal torques T KN, speeds n max, dimensions, mass moments of inertia J and weights / Bore ize Nominal torque peed / part 1 / part 3 ass moment of inertia J Weight 2) 2) / Part from to from to T KN n max d a d 1 d 3 l P 1 u d B b Nm min -1 mm mm mm mm mm mm mm mm mm mm mm mm mm kgm 2 kgm 2 kg kg ) ) JD 1 D 3 = 1) Coupling parts 1 and 3 of sizes up to and including 228 without finished bore are supplied unbored. 2) ass moments of inertia J and weights refer to couplings with medium-sized bores D 1 and D 3. = available ex our stock iemens D /

22 RB Type RB (teel) DIN Design with brake drum acc. to DIN b 1 P u 1 Part 1 3 Part 3 d a d 1 D 1 l D 3 d 3 d B 18.I T KN, n max,, J Nominal torques T KN, speeds n max, dimensions, mass moments of inertia J and weights ize Nominal torque peed / part 1 / Bore / part 3 ass moment of inertia J 2) 2) / Part from to from to T KN n max d a d 1 d 3 l P 1 u d B b Nm min -1 mm mm mm mm mm mm mm mm mm mm mm mm mm kgm 2 kgm 2 kg kg Weight ) ) JD 1 D 3 = 1) Coupling parts 1 and 3 of sizes up to and including 228 without finished bore are supplied unbored. 2) ass moments of inertia J and weights refer to couplings with medium-sized bores D 1 and D 3. = available ex our stock 18 iemens D /2007

23 RWB Type RWB (Grey Cast Iron) Design with brake disk Z 1 Part 1 3 P u Part 3 d a d 1 D 1 3) b 1 D 3 d 3 d B L 1 1 L 3 Type siegerland / iegerland brakes d Bmin mm UB 3-I b 1min mm UB 3-II UB 3-III I T KN, n max,, J Nominal torques T KN, speeds n max, dimensions, mass moments of inertia J and weights ize Nominal peed torque / part 1 / Bore / part 3 d a d 1 d 3 L 1 L 3 P 1 u d B Z min. max. T KN n from to from to max Nm min -1 mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm kgm 2 kgm 2 kg kg ass moment Weight of inertia J 4) 4) / Part d B max d B : n max = 1146 / d B(d B ) 2) 4)20 = d Bmax = 800 iemens D /2007 1) aximum speed for brake disk diameter d Bmax. For smaller brake disk diameters d B, the following applies: n max = 1146 / d B (d B in metres). For footnotes 2) to 4), see page 20 = available ex our stock up to d Bmax =

24 RB Type RB (teel) Design with brake diek Z 1 Part 1 3 P u Part 3 d a b 3) 1 d 1 D 1 D 3 d 3 d B L 1 1 L 3 Type siegerland / iegerland brakes d Bmin mm UB 3-I b 1min mm UB 3-II UB 3-III I T KN, n max,, J Nominal torques T KN, speeds n max, dimensions, mass moments of inertia J and weights ize Nominal peed torque / part 1 / Bore / part 3 d a d 1 d 3 L 1 L 3 P 1 u d B Z ass moment of inertia Weight J 4) 4) / Part from to from to min max T KN n max Nm min -1 mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm kgm 2 kgm 2 kg kg d B max d B : n max = 1528 / d B (d B ) b 1min : db > d a + 2 b 1 min 1) aximum speed for brake disk diameter d Bmax. For smaller brake disk diameters d B,the following applies: n max = 1528 / d B (d B in metres). 2) Coupling parts 1 and 3 of sizes 144 up to and including 228 without finished bore are supplied unbored. 3) When calculating the brake disk diameter, the required brake surface b 1 min must be taken into consideration: d B > d a + 2 b 1min 4 J D 1 D 3 4) Weights and mass moments of inertia refer to maximum brake disk diameters and mediumsized bores D 1 and D iemens D /2007

25 Alignment Tolerances 1 Adjustment of the coupling gap 1 / Possible misalignments 1) 2) 3) Radial misalignment Angular misalignment Axial misalignment 1min K r K w 1 K a 1max 1 The following max. permissible misalignments UT NOT be exceeded during operation: 1) Kr 2) Kw 1 3) Ka 10 z During assembly, the gap between the coupling parts is to be adjusted to dimension 1 within the permissible deviations. 1) Radial misalignment Kr 2) Angular misalignment Kw or alternatively 1 as greatest difference between the measured gapdimensions. 3) Axial misalignment Ka During operation, a dynamic axial misalignment with a max. frequencyof 10 z is permissible. The permissible radial, angular and axial misalignments can be calculated as follows: Kr zul./perm. = = 1 zul./perm. = K a zul./perm. d a x 1000 n Attention! Radial, angular and axial misalignment may occur at the same time. n (min -1 ) / Coupling speed d a (mm) / Coupling size Kr zul./perm. (mm) / Permissible radial misalignment 1 zul./perm. (mm) / Permissible angular misalignment K a zul./perm. (mm) / Permissible axial misalignment 21.I haft displacements (rounded) for radial, angular and axial misalignments permissible during operation ize Adjustment of gap during assembly / peed / peed / peed / peed d a 500 min min min min -1 mm 1min 1max 5) 5) 5) 5) mm 4) mm mm Degree 4) mm Degree 4) mm Degree 4) Degree ) Kr / perm. 1 / perm. K a / perm. 5) Kw / perm. iemens D /

26 IO Parallel and Taper Keys election of IO Fits 22.I IO Application of IO fits for given shaft end tolerances / Diameter IO election of IO fits above d to haft tolerance Bore tolerance mm mm haft tolerance acc. to Flender standard 25 k m n6 50 k6 DIN 748/1 haft tolerance acc. to DIN 748/1 50 m6 7 tandard shaft system K7 h6 7 / all h8 N7 22.II / Parallel keys Parallel key connection DIN 6885/1 Round headed parallel key and keyway acc. to DIN 6885/1 1) b IO J9 IO P9 1) The tolerance zone for the hub keyway width b for parallel key is IO J9 or IO P9 for heavy duty operating conditions. (e.g. reversing under load) above Diameter d to Width b 1) eight h Depth of keyway in shaft Depth of keyway in hub t 1 d + t 2 DIN 6885/1 mm mm mm mm mm mm d d d d d d d d d d d d d d d d d d d d d d d d d iemens D /2007

27 RUPEX Examples of Couplings in pecial Design pecial designs of RUPEX couplings can be supplied for a wide variety of different practical requirements. The following application examples show clearly how widely differing coupling applications can be solved to obtain the maximum technical advantage. We are gladly prepared to place our many years experience at your disposal if you have any special technical problems regarding couplings, in case of new designs or product development. Coupling with axial float limitation Application with motors supported on sliding bearings Coupling engageable with stationary drive e.g. in emergency drive train RUPEX - ARPEX RAK RUPEX - ARPEX combination type RAK with spacer RB Coupling type RB Application with displacement-type motors iemens D /

28 Coupling with pre-tensioned buffers Free of play Examples of Couplings in pecial Design Coupling with spacer sleeve Installation gap for belt etc. 24.I - / Buffer design - material, physics, characteristics Design aterial ardness Perm. temperature range election criterion Field of application tandard Perbunan, Perbunan, black C + 80 C from -30 C to + 80 C Perbunan, Perbunan, black 60 1) C + 80 C from -30 C to + 80 C hifting of resonance speed by changing the dynamic torsional stiffness pecial design on request Natural rubber, black C + 50 C from -50 C to + 50 C hifting of permissible temperature range for use at low temperatures All drive applications in the field of mechanical engineering; standard applications with medium elasticity Perbunan, Perbunan, green C + 80 C from -30 C to + 80 C Electrically insulating 1) 1) Reduced torques are to be taken into consideration. Information available on request. 24 iemens D /2007

29 Explosion Protection ATEX / 9 / EC (ATEX 95) RUPEX Explosion protection according to ATEX 95 It is optionally possible to have RUPEX couplings certified as equipment for intended use in hazardous locations according to directive 94/9/EC (ATEX 95) Underground application: category 2 urface application: categories Description of the surroundings Assignment of equipment categories to safety requirements Explosive atmospheres occurring: Explosive atmospheres caused by: Category: afety requirements: afe if taking into account: The quantification serves for orientation only. Gases, vapours, mists Dust 1,000 Continuously, frequently, for more than 1,000h/yr Category 1 very high Rarely occurring disturbances 10 1,000 Occasionally, for a short term, between 10 and 1,000h/yr Category 2 high Normally occurring disturbances 10 Infrequently, for a short term, less than 10h/yr Category 3 normal Normal operating conditions iemens D /

30 pare Parts d d d D D D L L L / izes / izes / izes / Bolts complete / Part no. / Denomination / izes / izes / izes / Bolt * * * 6 / Washer * * * 7 / Nut * 8 / Washer * * 11 / crew * * 12 / Circlip * / Buffers / Part no. / Denomination / izes / izes / izes / Buffers * * * Use in coupling size Characteristic size Number per set / Parameters D d L mm mm mm ) ) ) RWB /RB : L = 59,5 2) RWB /RB : L = 67, ) Type RWB /RB with brake disk: L = ) Type RWB /RB with brake disk: L = iemens D /2007

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32 (0472) (0531) (0532) (0535) (0533) (0536) (0537) (022) (0315) / (0311) B-1610 (0351) (0471) E (024) (0411) (0431) A (0451) C6 1/2 (028) (023) E &02 (0851) (0871) D 3 (029) (0991) A 1507 (0951) (0931) (0571) (0574) (0575) B1 (0577) (025) (0514) (0511) A7 (0516) (0512) (0510) (0513) (0519) A 2008 (0515) A 1019 (0512) (020) K (0757) (0756) (0771) (0755) (0769) (0754) (0898) (0591) (0592) (027) (0551) (0717) , (0731) /1405 (0791) (0371) (0379) (010) (021) /307/308 (020) (027) (024) / (023) (010) cn@siemens.com Web: www com.cn (010) (010) support.asia.automation@siemens.com PDF E20001-A9180-C950-V2-6C D