Power, Control & Green Solutions HRC. HRC Flexible Couplings. T +31(0) F +31(0) E elsto.eu

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1 Power, Control & reen olutions Flexible Couplings EN T +31(0) F +31(0) E info@elsto.eu elsto.eu

2 Flexible -couplings Flexible -couplings The flexible DECH coupling is a breakthrough safe claw coupling with flexible element to provide a torsionally flexible connection for shafts. The eflexible element, the coupling star, excels in its wear resistance, its oil, ozone and ageing resistance and its temperature resistance from -20 C to + 80 C. Thanks to the coupling s flexibility, impacts, rotary vibrations and noises are effectively absorbed. The coupling star is dimensioned such that radial and axial movements between the two halves of the coupling are cancelled out. With the fixed position of the coupling star its deformability in axial direction is free, and so no damaging axial forces can act on the machine bearing even with alternating torque. DECH couplings are fail-safe up to the fracture moment of the cast iron transmission cam and this provides maximum operational safety. The coupling is of the plug-in type for installation and does not involve any particularly rigorous requirements with respect to alignment accuracy. The balancing quality is, in accordance with DIN-IO 1940, in the quality range 16. The DECH coupling can be used in the whole of machine construction wherever a reliable shaft connection is needed between motor and machine. Type > tandard coupling > Taper-bush type > combined type standard / Taper > Components can be combined as needed. Flexible coupling with taper bush The DECH coupling combines the outstanding features of the flexible couplings with the advantages of the taper bush system: fast and easy installation for a torsionally flexible connection between shafts and elimination of shaft alignment errors. DECH couplings with taper bush have the advantage that even with greater shaft tolerances there is a backlash-free and at the same time axial fixing of the shaft. In addition the close sliding fit makes axial alignment of the coupling easier. The coupling star can be replaced by a simple axial displacement of the coupling halves without having to disassemble the machines connected. --EL-DECH-EN--002-V01 2 ELTO Drives & Controls Voorhout - roningen - Weert - Hoogerheide T +31(0) E controls@elsto.eu

3 Technical data ize ax. rotational speed Torque 1) Nm Torsion spring rigidity dyn oments of inertia 2) Nomin.- T KN ax T kmax Nm/ kgm 2 K r > 1) Torques for shaft fit with keyway 2) The information concerning weights and moments of mass inertia apply for medium holes per coupling; coupling half materials: EN-JL-250 (-25) in accordance with DIN EN ) The values mentioned are valid for 600 rpm and may occur only seperataly. At multiple misalignments or higher speeds the values must be reduced ax. shaft misalignment 3) , ,00 0,3 +0, , ,17 0,3 +0, , ,00 0,3 +0, , ,46 0,4 +0, , ,11 0,4 +0, , ,6 0,4 +1, , ,0 0,5 +1, , ,0 0,5 +1,7 1 axiale K a angular K w rad Allowable misalignments Radial misalignment Axial misalignment Angular misalignment > Reduction of the allowable values of misalignment when the combination of misalignments occur or at other rotational speeds: W r W + a W + w 1 K r K a K w <1 = Applies to speeds of 600 rpm 0, rpm 0, rpm 0, rpm --EL-DECH-EN--002-V01 K r/a/w = allowable radial, axial or angular misalignment of the shafts resp. of the coupling halves W r/a/w = measured radial, axial or angular misalign ment of the shafts resp. of the coupling halves ELTO Drives & Controls Voorhout - roningen - Weert - Hoogerheide T +31(0) E controls@elsto.eu 3

4 -Flange B, F, H d a d 1 d 1 d a d 1 d a l 1 l 1 l 1 B-Flange F-Flange H-Flange l B Flange F u. H Flange Installation length (H7) 1) l 1 l 1 l d a d 1 ize Pre. max. Bush min. max. FF FH HH FB HB BB , , , ,5 19, , , , ,5 18, , , ,5 18, , ,5 23, , , ,5 34, , , ,5 39, , , , ,5 51, ,5 246,5 285,5 > 1) Drill holes H7 with keyway in accordance with DIN 6885/1; tolerance zone J9 and set screws on the keyway --EL-DECH-EN--002-V01 4 ELTO Drives & Controls Voorhout - roningen - Weert - Hoogerheide T +31(0) E controls@elsto.eu

5 Taper-bushes with keyway acc. to DIN 6885/1 Tolerance J9 Taper-bush No. Bore ø of available Taper-bushes * 1610/ * > * These borholes are with flat - keyway DIN 6885/3 election > The torque of the machine T AN is determind by: T AN [Nm] = 9550 x P [kw] otor n [rpm] This torque T AN mutiplied by a safty factor depending on the application and the temperature factor T (see table page 7) gives the required nominal coupling torque T KN. Result: T KN x T x T AN > In case that bigger shock or changing load occur we recoend a revision according to DIN 740. An adequate calculation progra is available. For such a revision the following information is required: 1. Kind of the driving machine 2. Kind of the driven machine 3. Power of driving and driven machines 4. Rotational speed of operation 5. hock loads 6. Exciting loads 7. oments of inertia of load- and driving sides 8. tarts per hour 9. Ambient temperature Design example for IEC standard motors --EL-DECH-EN--002-V01 Dates of the plant Driving machine: Three-phase motor: 225 Power of the motor: P = 45 kw rotation at speed: n = 1500 rpm Driven maschine: ixer Ambient temperature: + 50 C T AN [Nm] = 9550 x 45 kw 1500 rpm = 287 Nm T KN = 1,75 x 1,5 x 287 Nm = 753 Nm election: DECH- ize 180 T KN = 950 Nm ELTO Drives & Controls Voorhout - roningen - Weert - Hoogerheide T +31(0) E controls@elsto.eu 5

6 Allocation to IEC motor Power P of the IEC motor and allocated couplings haft ends ize of the tree phase motor 3000 rpm P kw ize 1500 rpm P kw ize 1000 rpm P kw ize 750 rpm P kw ize Form E DIN 748 Teil 3 d x l at speed approx rpm 1500 rpm and less , , , , , , , , , , , , , , , , , , , , , , , , ,1 70 0, , , x x x x ,5 70 1,1 70 0, , x L 2,2 70 1,5 70 1,1 70 0, x L ,2 90 1,5 90 0, , x ,2 90 1, x , , , , , , , , x x x L 18, , x , x L x L , x , x x x x x x x x x x x x x x L 355 L 400 L x x x x x x 210 > As proposed in the table for surface cooled three-phase motors with cage rotor acc. to DIN 42673, page1 (data for motor 56, 63, 71, 80, 315 L, 355 L, 400 L, see catalogne iemens). This allocation is a preliminary selection for normal conditions of operation. For conditions of operation under shock and changing loads the selection must be made according to the following. --EL-DECH-EN--002-V01 6 ELTO Drives & Controls Voorhout - roningen - Weert - Hoogerheide T +31(0) E controls@elsto.eu

7 afety factors Assignment of load characteristics according to type of working machine DREDER Bucket conveyor Landing gear (caterpillar) Landing gear (rail) anoeuvring winches Pumps Impellers Cutter heads lewing gear ENERATOR, TRANFORER Frequency transformers enerators Welding generators CHEICAL INDUTRY Cooling drums ixers Agitators (liquid material) Agitators (semi-liquid material) Drying drums Centrifuges (light) Centrifuges (heavy OIL INDUTRY Pipeline pumps Rotary drilling equipment CONVEYOR Pit-head winches Winding engines jointed-band conveyors Belt conveyors (bulk material) Belt conveyors (piece goods) Band pocket conveyors Chain conveyors Circular conveyors Load elevators Bucket conveyors for flour Passenger lifts Plate conveyors crew conveyors Ballast elevators Inclined hoists teel belt conveyors Drag chain conveyors BLOWER,VENTILATOR Rotary piston blowers Blowers (axial/radial) Cooling tower fans Induced draught fans Turbo blowers BUILDIN ACHINERY Hoists Concrete mixers Road construction machinery RUBBER ACHINERY Extruders Calenders Kneading mill ixers Rolling mills WOOD WORKIN ACHINE Barkers Planing machines Wood working machines aw frames CRANE Luffing gear block Travelling gear Hoist gear lewing gear Derricking jib gear PLAIC INDUTRY ACHINE Extruders Calenders ixers Crushers ETAL WORKIN ACHINE Plate bending machines Plate straightening machines Haers etal planning machines Presses hears Forging presses Punch presses Countershafts, line shafts achine tools (main drives) achine tools (auxiliary drives) FOOD INDUTRY ACHINERY Bottling and container filling machines Kneading machines ash tubs Packaging machines Cane crushers Cane cutters Cane mills ugar beet cutters ugar beet washing machines PAPER ACHINE Couches lazing cylinders Pulper Pulp grinders Calenders Wet presses Willows uction presses uction rolls Drying cylinders PUP Piston pumps Centrifugal pumps (light liquids) Centrifugal pumps (viscous liquids) Plunger pumps Press pumps TONE AND CLAY WORKIN ACHINE Crusher Rotary ovens Haer mills Ball mills Tube mills Beater mills Brick pressesn TEXTILE ACHINE Batchers Printing and dyeing machines Tanning vats Willows Looms COPREOR Piston compressors Turbo compressors ETAL ROLLIN ILL Plate shears anipulator for turning sheets Ingot pushers Ingot and slabbing-mill train Ingot handling machinery Wire drawing benches Descaling machines Thin plate mills Heavy and medium plate mills Winding machines (strip and wire) Cold rolling mills Chain tractor Billet shears Cooling beds Cross tractor Roller tables (light) Roller tables (heavy) Roller straighteners Tube welding machines Triing shears Cropping shears Continuous casting plant Rollers adjustment drive anipulators LAUNDRIE Tumblers Washing machines WATER TREATENT Aerators crew pumps --EL-DECH-EN--002-V01 Driving machines Electric motors, turbines, hydraulic motors Piston machines 4-6 cylinders, degree of nonuniformity 1:100-1:200 Piston machines 1-3 cylinders, degree of nonuniformity up to 1:100 Operating factor Load characteristics of the working machine 1 1,75 2,5 1,5 2,5 3, Temperature factor T ϑ [ C] T - 20 < ϑ < +30 1, < ϑ < +40 1, < ϑ < +60 1, < ϑ < +80 1,8 ELTO Drives & Controls Voorhout - roningen - Weert - Hoogerheide T +31(0) E controls@elsto.eu 7

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