RGFLEX Torsionally Stiff Steel Lamina Couplings features: innovative quality products large-scale service optimal cost-performance ratio certified according to DN SO 0 worldwide net of distribution www.ktr.com RGFLEX
RGFLEX Steel Lamina Coupling Backlash-Free, Torsionally Stiff, Maintenance-Free Couplings As of January, 4 Kupplungstechnik has taken over the manufacture of the RGFLEX couplings from SAB WABCO GmbH. By adding the RGFLEX to the product range has extended its performance range to a max. torque of more than,,000 Nm and a shaft diameter of 6 mm. RGFLEX laminas The laminas of RGFLEX are arranged in pile and waisted single laminas. They are connected with the hubs and flanges through positive plug gauges in a completely backlash-free way. Dependent on the coupling lamina packages with 4, 6 or 8 special gauges are used. Dependent on the number of the piled single laminas torques, displacement figures and stiffness for special types can be varied. flange waisted laminas hub special bolts Pre-assembled laminas, hubs and flanges Contrary to the steel lamina coupling RADEX -N the RGFLEX is supplied in pre-assembled assembly groups (coupling halves). Hubs, lamina packages and flanges are factory-assembled as one unit. Highly resistant plug gauges are used to connect the laminas with the hubs and flanges. This ensures a completely backlash-free torque transmission throughout the complete torque range. The customer only has to connect the flange hollow shafts with the coupling halves through usual hexagonal screws. lamina package coupling half hub flange flange hollow shaft 2
RGFLEX Steel Lamina Coupling Standard Types (further types on request) Type 0 standard type coupling half supplied as assembled unit combination with different spacers, flange etc. as coupling half only compensation for axial and angular displacement possible standard shaft-hub connection through feather keyway on request frictionally engaged shaft-hub connections are possible with clamping set Type 02 standard type coupling half as double-sided flange type supplied as assembled unit combination with different spacers, flange etc. as coupling half only compensation for axial and angular displacement possible Type standard type with flange hollow shaft consisting of 2 coupling halves (type 0) and flange hollow shaft possible length of the flange hollow shaft up to 6 m coupling halves (type 0) are assembled by and supplied coupling design according to AP 60 on request available according to AP 67 safety catch of the spacer: The design of the coupling hubs avoids that the flange hollow shaft is thrown out, even in case of a lamina break. Type 2 Type 4 Type 5 Type 6 Type 33 Type 55 3
RGFLEX Steel Lamina Coupling Technical Data Torques, speeds and displacements coupling torques [Nm] max. T KN T Kmax speed angular [ ] [min - ] each lamina permissible displacements [mm] coupling half axial double-cardanic with flange hollow shaft radial type M = standard 2 3 2 0 400 500 630 0 0 2 0 0 3 4000 0 0 0 0 2500 3 4000 5000 6 00 00 2500 00 00 25000 30 40000 50000 000 000 25000 000 000 250000 400000 4 0 2400 0 6250 00 00 00 22500 0 340 40 54500 0 84000 000 30 000 5000 254000 300 3700 4000 00 0000 870000 45000 00 00 00 00 8 7700 7000 6 0 5400 5 40 0 4 4000 30 3400 3 2700 2500 2 270 8 0 4 0, 0, 0, 0, 0,50 0,50,,50, 2,0,0,0,5 2,0 2,5 2,5 3,5 3,5 2,0 2,0,3,5 2,5 2,5 6,5 7,0 7,0 7,5 8,5 9,0 7,0 7,5 8,5 6,5 Mass moments of inertia (further types on request) coupling type 0 0,004 0,005 0,02 0,035 0,045 0,05 0,45 0,234 0,372 0,566 0,85,085,554 7 in case of spacer length M = standard mass moments of inertia [kgm 2 ] coupling mass moments of inertia [kgm 2 ] type 02 type 0,04 0,004 0,0 0,03 0,040 0,0 0,22 0,92 0,36 0,6 0,666 0,886,298,558 0,003 0,05 0,040 0,095 0,28 0,27 0,377 0,6 0,983,2 2,45 2,853 8 5,3 2 3 2 0 400 500 630 0 0 2 0 0 3 4000 type 0 82 3,823 5,35 8,77 2,224 9,263 26,98 38,7 53,729 79,866, 6,823 30,2,777 type 02 type 2,592 84 4,08 6,638 8,872 3,708 7,976 26,534 29,000 400 3,6 97,43 59 69 4,02 22,704 3,798 49,882 68,626 956 39,0 6,357 305,3 44,587 799,409 222,622 4
RGFLEX Steel Lamina Coupling Standard Types standard types single- and double-cardanic optionally available with frictionally engaged shaft-hub connection finish bores tolerance H7, feather keyway according to DN 6885, sheet, tolerance JS9 -protection approved according to EC Standard 94/9/EC (Explosion Certificate ATEX 95) Type 0 Type 02 Type 2 3 coupling 2 0 400 500 630 0 0 2 0 0 3 4000 2 3 deviating spacer length on request 70 95 25 45 55 70 95 2 255 2 305 30 3 3 3 395 440 78,5 7 87,0 9 0,0,0 3 3 5 6 79,0 99,0 4,5 227,0 26 28 3 37 3,0 3,0 4 45 47 54 59 52,0 4 49,0 5 59,5 58,5 56,5 69,5 64,5 56,5 67,5 74,5 78,5 98,5 87,0 07,5 37,5 47,5 73,5 73,5 25,5 22,5 2,5 258,5 295,5 306,5 385,5 426,5 5 6 6 22 23 25 27 30 3 33 37 37 44 44 46 5 52 55 58 6 52 55 58 6 58 6 dimensions [mm] max. bore l /l 2 L /L 2 l 3 l 4 L 3 D A D D H7 M 2 standard d /d 2 29,5 30,5 40,5 42,5 43,5 56,5 58,5 62,5 73,5 8,5 85,5 89,5,5,5 7,5 9,5 27,5 37,5 4,5 5,5 59,5 68,5 4,5 5,5 59,5 68,5 59,5 68,5 95 35 70 245 270 5 370 395 45 450 470 500 550 5 0 6 0 80 8 945 00 2 46 73 25 55 85 225 255 2 305 340 370 450 4 5 6 6 7 80 8 39 05 5 35 2 240 2 0 3 400 430 500 550 0 850 930 63 70 225 240 253 268 2 30 330 3 400 440 500 550 0 E standard 92 4 22 42 70 84 96 6 26 228 243 258 272 282 0 330 3 3 450 430 470 4 630 Ordering example: RGFLEX coupling type design M M dimensions Ø 50 mm bore d Ø mm bore d 2 5
RGFLEX Steel Lamina Coupling Technical Data, Weights Axial, angular and torsion spring stiffness 2 3 coupling 2 0 400 500 630 0 0 2 0 0 3 4000 52,0/450,0 4/77,0 7/240,0 74,5/40 69,0/37 562,5 450,0 35 562,5 502,5 637,5 562,5 0,0 0,0 87,5 94 62,5 0,0 94 94 97 03 4 4 46 55 950,0 70,0 figures valid for lamina package/massive laminas axial stiffness angular spring stiffness torsion spring stiffness [0 6 Nm/rad] total coupling flange hollow shafts (2 coupling halves) ( coupling half) ( coupling half) [N/mm] [Nm/rad] M-dimension (standard) more length of m each 58/850 09/355 264/0 292/0 35/0 50 0 0 688 2376 85 85 287 25439 38503 5566 728 685 84569 03 239 5 26854 54698 85639 2307 248 3022 0,0/0,5 0,025/0,25 0,4500/0,7 0,/0,95 0,3550/,8,95 2,43 7 3,87 5,30 0 7,50 8,25 0, 3, 7,50 2, 27, 35,50 43,70 54,50 5 8,00 500 627,00 0,4 0,53,2,55,95 2, 8, 7,30 8, 0 4 26,50 38,70 50 67,00,00,00 22,00 3,00 35 9,00 787,00 0,008 0,043 0,2 0, 0,257 0,400 0,55 0,850, 3,55 0,30 6,70 7,50 0, 7,50,,50 46,,00,00 7 7 33 47 Calculation of the torsion spring stiffness of a complete coupling: C tot. = + + + C coupling half C coupling half C hollow shaft standard C more length Weights (further types on request) coupling weight [kg] coupling weight [kg] type 0 type 02 type type 0 type 02 type,6 3,7 6,5 9,5 2,2 9,2 2,5 30,3 39,6 50,2 64,3 78,5 94, 4,3,0,9 3,5 5,3 6,7,3 2,9 23,2 30,0 35,2 43,7 53,4 56,5 0, 6,4 25,5 3,7,4 5 78,6 03,2 29,4 62,6,0 24,2 289,6 2 3 2 0 400 500 630 0 0 2 0 0 3 4000 4,2 6 27,5 29,9 3,9 470,7 596,6 723,4 886,9 24,3 246,9 689, 245 92,0 79,6 88,7 06,9 39,9 6,9 5,9 23,3 29,4,9 5,3 396,9 500, 2,0 6 356,4 42 550,0 723,8 894,8 42,4 9,2 746,8 88,8 2664,6 3338,8 3992,2 5830,0 70,0 in case of spacer length M = standard 6
RGFLEX Steel Lamina Coupling Coupling Selection. Permissible displacements: K a : permissible axial displacement K w : permissible angular displacement K r : permissible radial displacement RGFLEX couplings are selected in a way that the max. permissible angular displacement K w must be as follows in every coupling element (coupling half) from to K w =.00 from to K w = 0. from to K w = 0.50 The max. possible angular displacement of two shafts connected with each other is thus 2 K w. The permissible radial displacement K r with distance g of the coupling elements is K r = g tan (K w ) angular displacement radial displacement n the table Technical Data you can see the max. permissible radial displacements K r for every and type based on the given standard lengths of the flange hollow shaft as well as the permissible angular displacement K w of the coupling elements. The max. permissible axial displacements K a for every and type are also mentioned in the table Technical Data. The figures of the permissible displacements indicated are dependent on each other! With an increasing axial displacement K a the permissible angular displacement K w decreases and thus the radial displacement K r. f the permissible axial displacement K a is used by 35 % when using a coupling (2 joints), you have only 40 % of the indicated permissible radial displacement available in case of an angular displacement of K w = 0.25. 2. Selection of the coupling The nominal torque T KN of the coupling is: T KN T N K f R f T The shock torque T Kmax of the coupling is: T Kmax T N A f R f T T N = torque of the machine K = operating factor (see table page 8) A = shock factor (see table page 8) The max. shocks occuring must not strain the coupling above the shock torque mentioned in the catalogue. The operating factor is the figure that the nominal torque T N of the machine must be multiplied with in order to get a fictive torque T KN = K T N. This fictive torque must ensure the same safety against coupling damages like the really active, timely changeable torque in case of a constant and any long influence on the coupling. Hints are given in the VD Standard 25, page 2. f R = factor of direction =.00 same torque direction =.70 changing torque direction f T = operating temperature temperature factor C - 30 0 + + + + 270 factor.00.00.00.0.25.43 3. Operating and shock factors Extract of applications from VD Standard 25. The deciphered figures mentioned are valid for the load figure A (medium), i. e. the dynamical behaviour is neither very favourable nor very infavourable or it is unknown. n case of deviating dynamical behaviour, i. e. in case of a very favourable or infavourable behaviour and for further applications the regulations of VD Standard 25 must be considered. The factors mentioned refer to four groups of machines: group : electro motors with low starting shocks group : electro motors with high starting shocks (see page 8) group : piston power machines with more than 2 cylinders, water turbines, hydraulic engines group V: piston power machines with one or two cylinders % of K a % of K r % of K a % of K r % of K a % of K r angular displacement K w - angular displacement K w - angular displacement K w - 7
RGFLEX Steel Lamina Coupling Selection Factors Operating and shock factors machine elevator excavator crusher rotating furnace conveyor belt windlass generator rubber roller suspension track wood working machine piston compressor turbo compressor converter crane mixer group/kind V V V V V shock factors 6,30 6,30 operating factors machine paper machine propeller pump excavator piston pump ( to 2 cylinders) piston pump (3 and more cylinders) centrifugal pump positive displacement pump agitator (light liquids) agitator (semi liquids) textile machine ventilator (large) group/kind V V V V V shock factors operating factors ventilator (small) roller mill 6,30 machine tool ball-and-pebble mill 6,30 6,30 drawing machine Technical advice. The bores in the coupling hubs show the H7 fit as standard. The feather keyways correspond to DN 6885, sheet with JS9 fit (keyway breadth). Other bore and feather keyway designs are possible on request. 2. Further shaft-hub connections (like taper bores, hydraulic releases, frictionally engaged connections etc.) are also available on request. 3. The hubs are supplied with setscrews, if not ordered differently. 4. Couplings with long flange hollow shafts must be checked regarding the speed being critical in bending. Please consult with our Engineering Department. 5. f the coupling is assembled vertically, the flange hollow shaft must be supported, under circumstances. Please consult with our Engineering Department. 6. Materials: The coupling hubs and flanges are made of steel. Due to the complete precise machining of these parts a low residual unbalance is ensured. The lamina are made of highly alloyed steel with high permanent resistance. For the connection with coupling flanges grinded, hardened bolts are used. 7. Please look at our RGFLEX mounting instructions for the assembly. Kupplungstechnik GmbH P.O. Box 763 D-407 Rheine Phone: +49 597 798-0 Fax: +49 597 798-698 nternet: www.ktr.com E-Mail: mail@ktr.com 8