Backlash-free shaft couplings: ROTEX GS Backlash-free shaft couplings ROTEX GS TOOLFLEX TOOLFLEX Metal bellow-type couplings 9
Backlash-free shaft coupling Technical description ROTEX GS is a 3-part, axial plug-in coupling backlash-free under pre-stress. It is convincing even with critical applications by its backlash-free power transmission, its stiffness which is each adapted to the application and its optimum damping of vibrations. This principle of installation offers significant assembly possibilities which optimize the assembly times in production. ROTEX GS (straight tooth, backlash-free) The straight toothing of the spider mounted under prestress results in a smaller surface pressure and consequently higher stiffness of the coupling system. The flexible teeth compensate for misalignment but are supported radially in the inside diameter by a central web. This avoids too high internal or external deformation by high acceleration or high speeds. This is vital for a smooth operation and long service life of the coupling. Limitation by concave cams in case of too high speeds/centrifugal forces and prestress of elastomer parts Support to the axis of rotation The hub claws and the nylon teeth are chamfered to enable easy plug-in and "blind assembly". The ends of the teeth have pegs to limit this axial positioning and simplify assembly. S Electric isolation due to gap dimension "s" By observing the gap dimension "s" the electrical isolation is ensured, as well as a high service life of the coupling. This fact is gaining more and more importance, due to the increasing precision of shaft encoders and the existing demand for electro-magnetic compatibility. E S The elastic spiders of the GS line are available in three different kinds of Shore hardness, identified by colour, the material being soft to hard. Due to these four spiders with different kinds of Shore hardness it is easily possible to adjust the ROTEX GS regarding the torsional stiffness and the vibration behaviour to the individual conditions of an application. Description of spider hardness [Shore] Identification Colour Material Permissible temperature range [ C] Permanent temperature Max. temperature short-term Available for coupling size 80 Sh A-GS blue Polyurethane 0 to + 80 60 to + 0 size to 24 92 Sh A-GS yellow Polyurethane 40 to + 90 0 to + 0 size to 9/98 Sh A-GS red Polyurethane to + 90 40 to + 0 size to 64 Sh D-H-GS green Hytrel 0 to + 0 60 to + size to 64 Sh D-GS pale green Polyurethane to + 1 to + 0 size 42 to Typical applications s of electric measuring systems backlash-free in the range of prestress s of electric measuring and control systems main spindle s - backlash-free in the range of prestress s, positioning s, main spindle s high load backlash-free in the range of prestress control s / tool spindles planetary gears / feed s high load, torsionally stiff high ambient temperat. / resistant to hydrolysis 98
Backlash-free shaft coupling Application recommendation Measurement and control systems For measurement and control systems a high torsional stiffness of the coupling is required in order to obtain positioning repeatability. The torques that arise are relatively small so that backlash-free, torsionally stiff power transmission is achieved by the elastomer pre-stress. In order to minimize the restoring forces we would recommend the spider 80 Sh A GS for such applications. Servo and positioning s ROTEX GS as an alternative to torsionally rigid couplings Torsionally rigid shaft-to-shaft connections do not only transmit the torque backlash-free and non-rigid, but also torque peaks and vibrations. For driving systems with critical vibrations, the benefit of high stiffness for torque transmission soon becomes a serious disadvantage. For applications on which torsionally rigid shaft-to-shaft connections may cause a problematic torque transmission, the optimum alternative is ROTEX GS. Backlash-free, damping vibrations, yet sufficiently torsionally rigid so that even highly dynamic servo s must not suffer from lower precision with the right sizing of the coupling. ROTEX GS TOOLFLEX Main spindle s With the high torques in the field of machine tools, e. g. direct spindle s, initial small twisting (under prestress) and damping dependent on the elastomer hardness is achieved. Peak tensions and shock loads are reduced or the resonance range is shifted to non-critical speed ranges, respectively. For peripheral speeds up to 40 m/s (referred to the outside diameter of the coupling) we would recommend to use our ROTEX GS clamping ring hub. For peripheral speeds exceeding 0 m/s, ROTEX GS...P should be used. We have on hand experiences from industrial applications for peripheral speeds up to 80 m/s. Comparison of rigid connection ROTEX GS Run-up (tool contact) Torque reduction Torque Interrupted cut ROTEX GS Rigid connection Machining operation - direction of machining Explosion protection use ROTEX GS couplings are suitable for power transmission in s in hazardous areas. The couplings are certified according to EC Standard 94/9/EC (ATEX 9) as units of category 2G and thus suitable for the use in hazardous areas of zone 1 and 2. Please read our information in the respective Type Examination Certificate and the operating and mounting instructions under www.ktr.com. Selection: In case of use in hazardous areas the clamping ring hubs (clamping hubs without feather keyway only for use in category 3) must be selected so that there is a minimum safety factor of s = 2 between the peak torque (including all operating parameters) and the nominal torque and frictional torque of engagement of the coupling. 99
Backlash-free shaft coupling Technical data ROTEX GS Spider Shore GS Shore range Max. speed [min -1 ] for hub design 2.0 / 2.1 1.0 2. / 2.6 1.1 6.0 2) 6.0 P 2) 0 A 0,2 0,3 1,8 43 80 A 0,3 0,6 3,1 82 000 400 92 A 0, 1,0,16 16 98 A 0,9 1, 8,3 2 296 80 A 0, 1,4 8,6 26 1 92 A 1,2 2,4,3 43 219 00 340 98 A 2,0 4,0 22,9 69 421 64 D 2,4 4,8 34,3 3 6 80 A 1,8 3,6 1,2 2 9 92 A 3,0 6,0 31, 9 262 19000 0 98 A,0,0 1,6 1 18 64 D 6,0,0 4,6 224 39 80 A 3,0 6,0 84,3 22 24 92 A,0,0 160,4 482 40 10 190 98 A 9,0 18,0 240, 18 846 64 D,0 24,0 32,9 982 1198 80 A 4,0 8,0 60,2 180 13 92 A, 1,0 1,6 344 336 00 1900 2400 31800 98 A, 2,0 11,9 13 64 64 D 16,0 32,0 234,2 02 86 80 A 4,9 9,8 343,8 82 19 92 A,0,0 3,0 1 90 11900 19000 0 98 A 1,0 34,0 89, 280 64 D 21,0 42,0 40,3 3 29 92 A 3 0 32 4296 80 24 98 64 A D 690 860 0 10 60 0 63 298 6189 8934 260 3696 92 A 9 190 2292 686 180 28 98 64 A D 80 30 1100 00 160 0 3 400 34 430 3 30 4348 92 A 190 0 484 132 230 98 64 A D 40 90 90 11900 32 40 60 8 160 40 286 316 4400 644 92 A 26 60 490 24 42 98 64 A D 4000 000 800 000 40 60 900 190 280 48000 6890 0 92 A 3 6 80 180 280 48 98 64 A D 3600 40 0 90 2 6 0 13 2230 360 92 9000 9 824 92 A 4 8 900 2180 2980 98 A 3 390 630 90 68 130 0 900 6686 64 D 82 160 460 360 9248 6 9 A 940 1880 0 900 6418 64 D 2800 300 60 00 11 230 660 1600 880 9 A 19 40 6 100 860 64 D 230 290 40 90 2400 4800 82 2 11923 1) Dynamic torsional stiffness with 0, x T KN 2) Higher speeds on request T KN Torque T K max Static Dynamic torsion torsion spring spring stiffness stiffness 1) [Nm/rad] [Nm/rad] Radial stiffness C r [N/mm] Weight [kg] each spider hub Mass moment of inertia J [kgm 2 ] each spider hub 1 0,2 0,016 0,002 x -3 x -3 x -6 x -6 3 0, 0,08 0,0 x -3 x -3 x -6 x -6 9 1,8 0,49 0,09 x -3 x -3 x -6 x -6 2,3 1,3 0,139 x -3 x -3 x -6 x -6 4,6 2,8 0,4 x -3 x -3 x -6 x -6 66,4 1,49 x -3 x -3 x -6 x -6 132 18 0,8, x -3 x -3 x -6 x -6 23 29 0,3 16, x -3 x -3 x -6 x -6 4 49 400,6 44,6 x -3 x -3 x -6 x -6 180 9 2246 0 x -3 x -3 x -6 x -6 2 98 386 0 x -3 x -3 x -6 x -6 00 11 496 0 x -3 x -3 x -6 x -6 400 2 000 00 x -3 x -3 x -6 x -6 180 340 26000 00 x -3 x -3 x -6 x -6 The size of the coupling has to be such that the permissible coupling load is not exceeded in any operating condition (see coupling selection on page 99). 1. Definitions and factors for coupling selection Prestress: The flexible prestress varies depending on the coupling size, the spiders/spider material and the production tolerances. As a result there is the axial plug-in force varying from low as sliding seat or with a torsionally soft spider to heavy with a high amount of prestress or torsionally rigid spider. T KN Rated torque of coupling Torque which can be transmitted continuously over the entire permissible speed range, taking into account the operating factors (S t, S d ). T Kmax Maximum torque of coupling Torque which can be transmitted during the full service life of the coupling as dynamic load or as alternating load 4, taking into account the operating factors (S t, S d, S A ). T R Friction torque Torque which can be transmitted by the frictionally engaged shaft-hub-connection. T AN Constantly occurring max. driving torque T AS Maximum driving torque Peak torque in case of shock by the driving A. C. motor, for example during acceleration or breakdown torque of the A. C. motor. T S Peak torque Peak torque on the coupling, calculated from max. driving torque T AS, rotational inertia coefficient m A or m L and opertaing factor S A. S t Temperature factor Factor considering the lower loading capacity or larger deformation of an elastomer part under load particularly in case of increased temperatures. In case of temperatures exceeding 80 C we would recommend to use the RADEX -NC (see page 133). S d Torsional stiffness factor Factor considering the different demands on the torsional stiffness and fatigue strength of the coupling dependent on the application. In case of using the spider 64 Sh D-GS and reversing S d has to selected in case of couplings made of aluminium. For positioning s with increased demand on torsional stiffness (e.g. gearbox with low transmission) we would recommend the use of the TOOLFLEX or RADEX -NC (see page 1 and 133). S A Operating factor Factor considering the occurring shocks or starts each minute, depending on the use m A(L) Rotational inertia coefficient of driving side (load side) Factor taking into account the distribution of masses in case of and load side shocks and vibration excitation. 0
Backlash-free shaft coupling Coupling selection 2. Factors Temperature factor S t Torsional stiffness factor S d Operating factor S A C + 40 C + 60 C + 80 C + C main spindle S t 1 1,2 1,4 1,8 See note on page 0. See note on page 0. *When using the 64 Sh D-GS spider at least factor 4 3. Calculation formula Rated driving torque J L m A = J A + J L S 2 J Schl = m Schl [kgm 2 ] ( 2 ) P AN/LN [kw] T N = 90 n [1/min] J A m L = J A + J L The size of the coupling must be selected so that the following conditions are met. T KN T N S t S d 4. Example of calculation (positioning ) Threaded spindle Main spindle of machine tool 2 * J A J L Positioning (x - y axis) 3 8* Peak torque *Starts/minute 0,01 m 2 J Schl = kg = 26-4 kgm ( 2 2 ) Shock on driving side T S = T AS m A S A Shock on load side T S = T LS m L S L T KN T S S t S d Ambient temperature 40 C, 60 starts/minute required, high torsional stiffness. Coupling selection: ROTEX GS clamping ring hub - axial plug-in jaw coupling backlash-free under prestress with frictionally engaged shaft-hub-connection. Moment of inertia of slide and work piece reduced to driving axis. and Shaft encoders Angle encoders = Moment of inertia of driving side = Moment of inertia of load side Details of driving side Servo motor Rated torque T AN = 43 Nm Max. torque T AS = 4 Nm Moment of inertia J Mot = 8-4 kgm 2 Driving shaft d = 32 k6 without feather key positioning * S A light shock loads 60 1,0 average shock loads 60 0 1,4 heavy shock loads 0 1,8 For the factors please see the tables at the top. Details of n side Ball spindle J SP = -4 kgm 2 Screw pitch s = mm Driven shaft d = k6 without keyway Mass of slide and work piece m Schl = kg ROTEX GS TOOLFLEX Selection of temperature, stiffness and operating factor: S t (40 C) = 1,2 S d = 4 S A = 1,0 Coupling selection: Selection according to rated torque (pre-selection) T KN T AN S t S d T KN 43 Nm 1,2 4 T KN 6,4 Nm Coupling selection: ROTEX GS - 98 Sh A-GS - clamping ring hub design T KN 32 Nm Review of max. driving torque T KN T S S t S d with T S = T AS m A S A and J L m A = J A + J L J L = (J Sp + J Schl + 1/2 J K ) J L = ( + 26 + 9,6) -4 kgm 2 = 3,8-4 kgm 2 J A = J Mot + 1/2 J K = (8 + 9,6) -4 kgm 2 = 11,6-4 kgm 2 J L 3,8-4 m A = = m A = 0, J A + J L (11,6 + 3,8) -4 T S = T AS m A S A = 4 Nm 0, 1,0 =,44 Nm ROTEX GS 98 Sh A-GS T KN = 32 Nm T KN = T S S t S d =,44 Nm 1,2 4 T KN 266,11 Nm Check of torque transmission of clamping ring hub for shaft diameter ø. T R > T AS Figures for T R see table on catalogue page 6. Transmittable torque Ø H / k 6 = 436 Nm > 4 Nm Selection of ROTEX GS 98 Sh A-GS, clamping ring hub design is permissible. 1
Backlash-free shaft coupling Hub designs Due to the numerous applications of ROTEX GS for many different mounting situations, this coupling system is available with various hub designs. These designs mainly differ in that they offer either positive or frictionally engaged (backlash-free) connections, but mounting situations like, for example, hollow shaft tacho, shaft encoder installation or similar applications are covered, too. Design 1.0 with keyway and fixing screw Positive power transmission; permissible torque depends on the permissible surface pressure. Not suitable for backlash-free power transmission for heavily reversing operation. Design 1.1 without keyway, with setscrew Non-positive torque transmission, suitable for backlash-free transmission of very small torques. (No ATEX release) Design 2.0 clamping hub, single slotted, without keyway Frictionally engaged, backlash-free shafthub-connection. Transmittable torques depend on the bore diameter. Design 2.0 up to size 19 as standard. (Only for ATEX category 3) Design 2.1 clamping hub, single slotted, with keyway Positive power transmission with additional frictional tightness. The frictional tightness avoids or reduces reversal backlash. Surface pressure of the keyway connection is reduced. Design 2.1 up to size 19 as standard. Design 2. clamping hub, double slotted, without keyway Frictionally engaged, backlash-free shafthub-connection. Transmittable torques depend on the bore diameter. Design 2. from size 24 as standard. (Only for ATEX category 3) Design 2.6 clamping hub, double slotted, with keyway Positive power transmission with additional frictional tightness. The frictional tightness prevents or reduces reversal backlash. Surface pressure of the keyway connection is reduced. Design 2.6 from size 24 as standard. Design 6.0 clamping ring hub Integrated frictionally engaged shaft-hub-connection for transmission of higher torques. Screw fitting on elastomer side. For details about torques and dimensions see page 6. Suitable for high speeds. Design 6.0 P precision clamping ring hub Design equal to 6.0, but highly accurate machining with slight modifications of design, see page. Design. split claming hub without feather keyway for double-cardanic connections Frictionally engaged, backlash-free shafthub connection for the radial assembly of the coupling. Transmittable torques dependent on bore diameter. Torque indicated on page 111. Design.6 split clamping hub with feather keyway for double-cardanic connections Positive shaft-hub connection with additional frictional engagement for the radial assembly of the coupling. The frictional engagement avoids or reduces the reverse backlash. The surface pressure of the feather key connection is reduced. Special designs on request of customers Design 4.2 with CLAMPEX clamping set KTR Frictionally engaged, backlash-free shafthub-connection for transmission of higher torques. Special hub designs for hollow shaft s Design 6. clamping ring hub Design equal to 6.0, but clamping screws on the outside. For example for radial disassembly of the intermediate tube (special design). Expansion hub ROTEX GS hub with CLAMPEX KTR External clamping ring hub Threaded stem hub 2
Backlash-free shaft coupling Basic programme Hub design un-/pilot bored [mm] according to ISO fit H / feather keyway with thread according to DIN 688 sheet 1 - JS9 2 3 4 6 6,3 8 9 9, 11 1 16 18 19 22 24 2 28 32 3 40 1.1 2.0 1.0 9 1.1 2.0 2.1 1.0 1.1 2.0 ROTEX GS TOOLFLEX 2.1 1.0 1.1 2.0 2.1 6.0 6.0 P 1.0 2.0 19 2.1 6.0 P 3. 6.0 P 1.0 2. 24 2.6 6.0 P 0 6.0 P 1.0 2. 28 2.6 6.0 6.0 P 1.0 2. 6.0 Taper bores for Fanuc motors: GS 19 1: Ø 11; GS 24 1: Ø 16 Hub design s [mm] 28 32 3 40 42 4 48 0 60 42 6.0 48 6.0 6.0 6 6.0 6.0 on request = Pilot bored clamping hubs = Standard bore Unbored hubs up to size 6 available from stock. Further dimensions on request 3
Backlash-free shaft coupling Miniature couplings Backlash-free shaft connections for measurement swith small torques Single cardanic coupling in three parts Axial plug-in ability - easy blind assembly, without any time-consuming screw connections Small dimensions - low flywheel mass Maintenance-free, easy to check visually Different elastomer hardness of spiders Available from stock for all usual shaft dimensions acc. to ISO fit H (apart from clamping hub), keyway, from Ø 6 mm acc. to DIN 688 sheet 1 - JS9 Approved according to EC Standard 94/9/EC (only for hub design 1.0 and 2.1) Basic programme see page 3 Hub designs (see page 2): Design 1.0 Design 1.1 Design 1.2 with keyway without keyway without keyway and setscrew with setscrew without setscrew Setscrew to DIN 916 Clamping hub with capscrew DIN EN ISO 462 (ROTEX DIN 84) Design 2.0 Clamping hub without keyway, (only category 3), torques depending on bore diameter Design 2.1 Clamping hub with keyway Hub design d min d max d max d max 1.0 1.1, 1.2 2.0, 2.1 Dimensions [mm] Setscrew Clamping screw D H d H L l 1; l 2 E b s a G t M 1 t 1 e Ø D K Hub material Aluminium (Al - H) T A 9 2 3 4 4-1 11 16 11 16 2 - -,2 8,, 1 22 34 3 11 11 8 13 4 6 8 0, 1,0 1,0 1,0 1, 4,0 6,0 1, 3, 2,0 M2 M3 M4 M4 M4 2, 3,,0,0,0 M1,2 M2 M2, M3 M3 2, 3,,0,0,0 3,,0, 9,0 11, 11,4 16, 23,4 2, 32,2-0,3 0,6 1,34 1,34 Bores and the corresponding transmittable torques of the clamping hub design 2.0 Ø 2 Ø 3 Ø 4 Ø Ø 6 Ø Ø 8 Ø 9 Ø Ø 11 Ø Ø Ø 1 Ø 16 * * * * 0,8 0,9 0,9 1,00 1, 9 2,1 2,2 2,3 2,4 2, 2,6 2, 2,8 3,6 3,8 4,0 4,1 4,3 4, 4, 4,8,0 4, 4,8,0,1,3,,6,8 6,1 6,3 6, Other designs ROTEX GS for hollow shaft connections ROTEX GS-CF ROTEX GS with interference fit hub ROTEX GS with expansion hub ROTEX GS with external clamping ring hub Order form: ROTEX GS 80 Sh A- GS 1.0 Ø 2.0 Ø Coupling size Spider hardness Hub design Hub design 4
Backlash-free shaft coupling Backlash-free shaft connection under prestress for spindle s, elevating platforms, machine tool s, etc. Single cardanic coupling in three parts Axial plug-in ability - easy blind assembly, without any time-consuming screw connections Small dimensions - low flywheel mass Maintenance-free, easy to check visually Different elastomer hardness of spiders Available from stock for all usual shaft dimensions acc. to ISO fit H (apart from clamping hub), keyway, from Ø 6 mm acc. to DIN 688 sheet 1 - JS9 Approved according to EC Standard 94/9/EC (only for hub design 1.0 and 2.1/2.6) Basic programme see page 3 Hub designs: (see page 2) ROTEX GS TOOLFLEX Design 4.2 with CLAMPEX KTR Design 1.0 with keyway and thread 1.1 without keyway, with thread ROTEX GS - ROTEX GS 42 - Design up to size 19 as standard 2.0 single slot without keyway (only for category 3) 2.1 single slot, with keyway Design from size 24 as standard 2. double slot, without keyway (only for category 3) 2.6 double slot with keyway Design 2.0, 2. Torque depending on bore diameter Unbored Finish bores 1) d min d max Dimensions [mm] D D H d H L l 1 ;l 2 M/N E b s a Setscrew Clamping screws G t M 1 t 1 e D K T A Hub material Aluminium (Al - H) 19 6 24 40 18 66 2 16 2,0 3 M M6, 46, 24 8 28 2 8 18 2,0 3 M M6,,, 28 6 90 3 1 2, 4 M8 1 M8 11, 2, 3 2,0 4 80 1 4 24 18 3,0 4 M8 1 M8 1,, 83 2,0 Hub material (Steel St - H) 42 8 9 46 6 0 28 26 3,0 4,0 M8 M 18 32, 94 69 48 1 62 9 1 0 6 32 28 21 3, 4,0 M8 M 21 36, 0 4 1 0 60 160 6 3 22 4,0 4, M M 26 42, 0 0 6 22 80 11 13 68 18 4 3 26 4, 4, M M 33 4, 4 0 9 13 160 80 2 8 3 40 M 2 M16 36 1, 29 Ø8 Bores and the corresponding transmittable torques of the clamping hub design 2.0/2. Ø Ø11 Ø Ø1 Ø16 Ø18 Ø19 Ø Ø22 Ø24 Ø2 Ø28 Ø Ø32 Ø3 Ø Ø40 Ø42 Ø4 Ø48 Ø0 Ø Ø60 Ø6 Ø0 Ø Ø80 19 2 2 2 29 31 32 32 34 32 2) 24 34 3 36 39 40 41 42 43 4 46 28 80 81 81 84 8 8 89 91 92 9 99 2 92 94 9 98 99 2 4 9 1 113 42 232 2 244 246 2 260 266 48 393 40 413 421 43 6 1) depending on hub design 2) 2 x clamping screw M4 9 118 2 3 6 1 24 283 288 294 1 9 434 44 44 462 43 486 494 486 498 0 26 39 4 6 8 608 0 18 26 3 4 9 6 8 608 62 648 12 18 1163 01 39 8 1316 134 1393 Order form: ROTEX GS 24 98 Sh A-GS 2. Ø 24 1.0 Ø Coupling size Spider hardness Hub design Hub design
Backlash-free shaft coupling Clamping ring hubs Backlash-free shaft coupling with integrated clamping system Applicable to, for example, forward feed main spindle s of machine tools, press rollers, etc. High smoothness of running, application up to a peripheral speed of 40 m/s For high friction torques (consider the selection in case of explosion protection use) Easy to assemble due to internal clamping screws up to Ø 0 mm according to ISO fit H, from Ø mm according to ISO fit G Approved according to EC Standard 94/9/EC (Explosion Certificate ATEX 9) Tack thread M 1 between clamping screws Bores d 1 /d 2 and the corresponding transmittable friction torques TR of clamping ring hub in 1) Ø6 Ø Ø11 Ø Ø1 Ø16 Ø19 Ø Ø24 Ø2 Ø28 Ø Ø32 Ø3 Ø Ø40 Ø42 Ø4 Ø48 Ø0 Ø Ø60 Ø6 Ø0 Ø80 8,6 13,8, 22, 19 41 4 62 68 6 83 90 24 48 6 4 2 90 9 1 0 3 28 2 189 188 23 280 3 33 9 269 33 36 398 436 442 01 33 2 61 644 42 399 44 06 40 66 81 64 6 28 836 88 48 60 68 809 841 926 916 42 1181 1 1311 6 918 94 2 40 118 1318 139 1646 1662 1960 168 169 168 1833 1968 49 24 249 2898 2246 23 0 26 82 319 36 423 The transmittable torques of the clamping connection consider the max. clearance with shaft fit k6 / bore H, from Ø G/m6. With bigger clearance the torque is reduced. As shaft material steel or spheroïdal iron with a yield point of approx. N/mm 2 or more can be used. If hollow shafts are used, the strength must be checked (see KTR mounting instructions, KTR Standard 4 at our homepage www.ktr.com). Torques 1) 92 Sh A - GS 98 Sh A - GS T KN T Kmax T KN T Kmax D H 3) d H L l 1 ;l 2 l 3 E b s a M, 1 19,0 24 3,0 0 28 9,0 190 190,0 0 42 26 48 3 6 3 0 6, 2 1 34 60 0 160 3 32 60 40 900 2 0 68 130 940 2) 1880 2) 19 2) 40 2) Clamping screws Number z T A Weight per hub with max. bore [kg], 0 18, 13, 13 1, 2 M3 4 1,34 M3 0,049 40 18 66 2,0 18 16 2,0 3 M4 6 3 M4 0,0 2 8,0 22 18 2,0 3 M 4 6 M 0,280 6 90 3,0 2 1 2, 4 M 8 6 M 0,40 80 1 4,0 3 24 18 3,0 4 M6 8 M6 0,90 Hub and clamping ring material Steel (St-H) 9 46 6 0 3 26 3,0 4,0 M 8 4 3 M 8 2, 1 0 6 41 28 21 3, 4,0 M 4 69 M 3,08 0 60 160 6 4 22 4,0 4, M 4 69 M 4,6 13 68 18 3 26 4, 4, M 4 0 M 6, 160 80 2 8 63 40 M 0 M 9,9 1) Please note coupling selection on pages 0, 1, 1 2) Figures for 9 Sh A - GS 3) ØD H + 2 mm with high speeds for expansion of spider 4) In case of using the spider 64 Sh D-GS resp. short dimensioning we recommend the application of clamping ring hubs made of steel. Swing module Dimensions [mm] Hub material Aluminium (Al-H) opionally steel Shaft encoder M 1 Clamping ring material Steel (St-H) Mass moment of inertia per hub with max. bore [kg m 2 ] 0,0 x -4 0,31 x -4 1,3 x -4 3,13 x -4 9,60 x -4 31, x -4 2,0 x -4 3,0 x -4 191,0 x -4 396,8 x -4 Servo motor ROTEX GS for connection of swing module servo motor shaft encoder ROTEX GS with clamping ring hub and torque limiter KTR-SI Order form: ROTEX GS 24 98 Sh A-GS 6.0 Ø 24 6.0 Ø Coupling size Spider hardness Hub design Hub design 6
Backlash-free shaft coupling Type P according to DIN 69002 Backlash-free, highly accurate shaft coupling with integrated clamping system Developed specifically for stub spindles on multiple spindle heads according to DIN 69002 Application on main spindle s with high speeds, peripheral speeds of 0 m/s and more (please consult with KTR Engineering Department) For high friction torques (consider the selection in case of explosion protection use) Easy to assemble to due internal clamping screws Approved according to EC Standard 94/9/EC Certificate ATEX 9) ROTEX GS TOOLFLEX Tack thread M1 between clamping screws As shaft material steel or spheroidal iron with a yield point of approx. N/mm 2 or more can be used. If hollow shafts are used, the strength must be checked (see KTR mounting instructions, KTR Standard 4 at our homepage www.ktr.com). P 19 P 3, 19 P 24 P 0 24 P 28 P P 42 P 48 P P Torque 2) Dimensions [mm] Hub and clamping ring material steel (St-H) 98 Sh A-GS 64 Sh D-GS T KN T Kmax T KN T Kmax d 1) D H 3) d H L l 1 ;l 2 l E b s a d 1 d 2 d 3, 2 16 32 * 32, 0 18, 1, 13 1, 2 1 1 28 1 34 16* 3, 18 66 2 21 16 2 3 19 1 34 21 42 19* 40 18 66 2 21 16 2 3 23 22 43 86 4 8 24* 0 2 8 2 18 2 3 28 29 60 0 2* 2 8 2 18 2 3 160 3 0 400 3* 6 90 3 1 2, 4 40 40 32 60 40 8 40 80 1 4 40 24 18 3 4 46 46 40 900 60 42 9 46 6 0 4 26 3 4 2 2 0 6 13 4 1 0 6 0 28 21 3, 4 2 60 68 130 82 160 0 0 60 160 6 8 22 4 4, 2 8, 9, 9,,,, 16, 18,, 22, Transmittable torque of clamping ring hub Ø d 1) Tightening torque of clamping screws T A 1) * Standard spindle shaft diameter 2) Please note coupling selection on pages 0, 1, 1 3) Ø D H + 2 mm with higher speed for expansion of spider Weight per hub with bore Ø d norm [kg] Mass moment of inertia J with bore Ø d norm [kg m 2 ] 2 1,89 0,08 0,011-3 60 3,0 0,16 0,03-3 1 3,0 0,19 0,046-3 8 4,9 0,331 0,136-3 10 8, 0,44 0,1-3 06 8, 0,64 0,4-3 821 1,32 1,32-3 09 3 2,23 3,003-3 1340 69 3,09,043-3 1 69 4,4,02-3 Selection for stub spindles Spindle ROTEX GS P Dimensions d D H l 1 / l 2 L E 2 x P 32 18. 0 13 32k x 2 19 P3. 16 3. 2 66 16 32g x 19 P 19 40 2 66 16 40 x 3 24 P0 24 0 8 18 0 x 4 24 P 2 8 18 63 x 28 P 3 6 3 90 Tool side Spindle bearing Driving side (gearbox or motor) ROTEX GS type P with central coolant supply for stub spindles and multiple spindle heads Order form: ROTEX GS 24 P 98 Sh A-GS 6.0 Ø 2 6.0 Ø 2 Coupling Type Spider hardness Hub Finish Hub Finish size design bore design bore
Compact design NEW Up to 1/3 shorter High performance Design with axial slot, patent pending Good concentric running properties Uniform power transmission due to cams without slots Improved balancing quality ROTEX GS - 19 compact single slotted 1) design 2.0 ROTEX GS 24 - compact axially slotted design 2.8 Torque 92Sh A 98Sh A 64Sh D d max. D H D K L l 1 l 2 E b s t e M 1,2 2,0 2,4 8 16,6 18 8 6 1 2, M2 0,3 9 3,0,0 6 8 21,3 24 8 1 3, 6, M2, 0,6,0 9,0 2 26,2 26 1 3, 8,3 M3 1,34,, 16, 32 9, 9, 13 1, 4, 9,6 M4 9,2 19 1 21 40 4,0 0 1 1 16 2 9 M6 24 3 60 32, 4 18 18 18 2 11 M6 28 9 160 0 3 6 69 62 21 21 1 2, 23,8 M8 2 190 32 40 4 80 86 6 26 26 24 18 3 16, M 49 Ø3 Ø4 Ø Ø6 Ø Ø8 Ø9 Ø Ø11 Ø Ø Ø1 Ø16 Ø18 Ø19 Ø Ø24 Ø2 Ø28 Ø Ø32 Ø3 Ø Ø40 Ø42 Ø4 0,8 0,9 1,0 1,0 1,1 9 1,9 2,0 2,1 2,2 2,3 2,4 3,4 3,6 3, 3,9 4,1 4,2 4,4 4,6 4, Bores and the corresponding transmittable torques of clamping hub design 2.0/2.8,1,4, 8,0 8,2 8, 8,8 9,1,8 2),9 2) 6,1 2) Dimensions [mm] 19 24 2, 26,3 28,4 2 28,4 29 29, 31,1 31, 32,4 2,9 2) 24 21 23 2 32 34 40 42 1 3 9 63 68 28 4 8 62 0 4 8 93 9 9 116 4 136 92 99 111 11 3 8 13 18 19 216 234 24 29 28 1) ROTEX GS compact size to 19 axially slotted on request 2) with screw M3, size 19 with screw M T A Order form: ROTEX GS Compact 98 Sh A-GS Design 2.8 Ø 28 Design 2.8 Ø 4 Coupling size Design Spider Hub Finish Hub Finish design bore design bore 8
Design DKM double cardanic Backlash-free, double cardanic shaft connection Double cardanic design allowing for absorption of larger radial displacements Axial plug-in ability - easy blind assembly Maintenance-free Simple to check visually according to ISO fit H (apart from clamping hub), keyway, from Ø 6 mm according to DIN 688 sheet 1 - JS9 Approved according to EC Standard 94/9/EC (Explosion Certificate ATEX 9) Hub designs see page 2 ROTEX GS TOOLFLEX Unbored Finish bore Dimensions [mm] D D H d H d H1 l 1 ;l 2 M; N l 11 l L DKM E b s a d min d max Hub material Aluminium (Al-H) Spacer material Aluminium (Al-H) DKM 2 3 13 23 4 0, 4,0 DKM 3 4 34 8 6 1,0 6,0 9 DKM 4 9,2 2 4 8 1,0 1, DKM 4 2 8, 11 6 2 1,0 3, DKM 4 1, 11 8 34 6 13 1, 2,0 19 DKM 6 24 40 18,0 18 2 42 92 16 2,0 3,0 24 DKM 8 28 2,0 2 16 2 1 18 2,0 3,0 28 DKM 6,0 3 18 8 8 1 2, 4,0 DKM 4 80,0 4 68 18 24 18 3,0 4,0 Hub material Steel (St-H) Spacer material Aluminium (Al-H) 42 DKM 8 9 46 46 0 28 22 4 14 26 3,0 4,0 48 DKM 1 62 9 1 1 6 32 24 80 192 28 21 3, 4,0 DKM 4 1 0 60 60 6 3 28 88 218 22 4,0 4, Other designs: ROTEX GS - DKM as hollow shaft design ROTEX GS - CF - DKM ROTEX GS - DKM in combination with torque limiter KTR-RU Order form: ROTEX GS DKM 92 Sh A-GS 1.0 Ø 2. Ø 32 Coupling Design Spider hardness Hub design Hub design size 9
Intermediate shaft couplings Design ZR1/ZR2 Backlash-free intermediate shaft coupling Application, for example, on lifting spindle elements, parallel linear systems, overhead gantry robots, handling machines For connection of larger shaft distances and a maximum speed of 0 1/min Spacer part to be disassembled radially Design ZR1 for torques up to the maximum friction torque of clamping hub, design ZR2 for higher torques according to ISO fit H (apart from clamping hub), keyway, from Ø 6 mm according to DIN 688 sheet 1 - JS9 Hub designs see on page 2 Design ZR1 Design ZR2 Un- d d bored min max Dimensions [mm] ZR1 D H l 1 ;l 2 L E b s B L R1 L R1 L ZR1 d R min. Cap screw DIN EN ISO 462 8.8 Tightening torque Friction torque M x I T A T R ZR1 19 ZR1 24 ZR1 28 ZR1 ZR1 4 1 6 24 8 28 4 11 3 13 1, 11, 40 2 66 16 2,0,0 8 18 2,0 16,0 6 3 90 1 2, 1, 80 4 1 24 18 3,0 21,0 please mention for inquiries and orders 6 L R1 +22 82 L R1 +0 96 L R1 +60 111 L R1 +0 6 L R1 +90 x2, x3,0 2x2, 3x4,0 40x4,0 M3x 1,34 6,1 M6x16, 34 M6x, 4 M8x2 2 M8x 2 3 ZR2 19 ZR2 24 ZR2 28 ZR2 ZR2 42 ZR2 48 ZR2 ZR2 6 ZR2 Other designs: Un- d d bored min. max. 4 1 6 24 8 28 4 1 62 4 22 80 Dimensions [mm] ZR2 D H l 1 ;l 2 l 3 L E b s B L R2 L R2 L ZR2 min. 11 26 0 13 1, 11, 40 2 26 6 16 2,0,0 86 18 2,0 16,0 6 3 4 0 1 2, 1, 80 4 4 1 24 18 3,0 21,0 9 0 2 8 26 3,0 23,0 6 0 28 21 3, 24, 0 6 80 1 22 4,0 26,0 13 80 18 3 26 4,, please mention for inquiries and orders 9 0 16 1 192 2 261 288 L R2 + 22 L R2 + 0 L R2 + 60 L R2 + 0 L R2 + 90 L R2 + 0 L R2 + 1 L R2 +1 L R2 + 1) For inquiries and orders please mention the shaft distance dimension L R1 /L R2 along with the maximum speed to review the critical whirling speed. CLAMPEX KTR Precision tube Clamping set ning tor- Clamping screws Tighte- C 2 DIN EN ISO 462.9 d R Nm [ µtot. = 0, que rad ] size M x I T A x2,0 68,36 x16 M4x,2 x2,0 1 x18 M4x,2 x3,0 94,9 x28 M6x18 1,0 2x2, 1811 2x34 M6x18 1,0 32x3, 16 32x43 M6x18 1,0 40x4,0 1180 40x3 M6x18 1,0 4x4,0 1486 4x9 M8x22 41,0 x4,0 3343 x1 M8x22 41,0 60x4,0 44362 60x M8x22 41,0 ROTEX ZRG with bearing for higher speeds ROTEX GS ZR for vertical assembly Order form: ROTEX GS 24 ZR1 00 98 Sh A-GS 1.0 Ø 24 2. Ø24 De- sign Coupling size Shaft distance dimension [L R1 /L R2 ] Spider hardness Hub design Hub design 1
Intermediate Shaft Couplings with Aluminium Tube Design ZR3 Use with lifting machines, in handling units, robotic palletisers etc. Easy, radial coupling assembly because of split coupling hub Exchange of spiders without displacing the and n side Standard lengths are possible up to 4 m without intermediate bearing dependent on speed and size Positive and frictionally engaged torque transmission Low mass moment of inertia due to use of aluminium Can be combined with other hub forms (clamping or clamping ring hubs) according to ISO fit H, keyway according to DIN 688 sheet 1 - JS9 ROTEX GS TOOLFLEX Dimensions [mm] 19 24 28 42 48 Finish bore d max. D H 40 8 d min. 18 22 22 28 4 0 6 80 9 l 1 2 3 4 0 6 L 49,0 9,0 6,0 83, 93,0 3,0 l 3 1, 22,0 2,0 33,0 36, 39, E 16 18 24 26 28 L R General min. max. 98 296 113 346 131 390 163 3934 180 392 2 3921 L ZR min. max. 133 00 1 300 181 4000 229 4000 23 4000 281 4000 d R 40 0 60 0 80 0 D K 4 3 84 94 t 1 8,0, 11, 1, 18,0 18, e, 2 32 36 Capscrew DIN EN ISO 462 8.8 T A M 6 M 6 M 8 2 M 8 2 M 49 M 86 98 Sh A-GS Coupling torques 1) T KN T K max. GTShub 2) J 1 Mass moment of intertia [ 3 kgm 2 ] ZR-hub J 2 Pipe/ meter J 3 stat. torsion spring stiffness ZW 3) C 2 [Nm 2 /rad] ROTEX GS 98 Sh A-GS T KN Coupling torques 1) T K max. GTShub 2) J 1 Mass moment of intertia [ 3 kgm 2 ] ZR-hub J 2 Pipe/ meter J 3 stat. torsion spring stiffness ZW 3) C 2 [Nm 2 /rad] 19 24 28 3 9 0 190 0,002 0,062 0,1629 0,0 0,04481 0,9 0,329 0,63 1,199 3243,6 6631,8 118,1 42 48 190 26 3 0 6 0,0 1,166 1,8044 0,22 0,23 1,1834 2,92 4,60 9,21 29290,4 44929, 9118,2 ROTEX GS 19 24 28 42 48 Ø 8 1 Bores and the corresponding transmittable friction torques of split hub without keyway [mm] Ø Ø 11 Ø Ø 1 Ø 16 Ø 18 Ø 19 Ø Ø 22 Ø 24 Ø 2 Ø 28 Ø Ø 32 Ø 3 Ø Ø 40 Ø 42 Ø 4 21 21 23 23 4 32 32 8 34 34 62 0 0 40 40 4 4 42 42 8 8 4 86 86 136 199 1 93 93 9 21 3 9 9 1 226 9 9 9 14 23 11 11 186 21 4 4 198 290 136 136 21 31 8 8 23 344 16 248 362 163 260 0 1 29 40 1) Transmissible torque acc. to 92 Sh-A GS. The coupling is normally supplied with 98 Sh-A GS. 2) At d max. 3) intermediate shaft at L = 00 mm with L Rohr = L ZR - 2 L For enquiries and orders please mention the shaft distance dimension L R along with the maximum speed to review the critical speed. Ø 46 28 416 Ø 48 29 434 Ø 0 3 42 Ø 498 Order form: ROTEX GS 24 ZR3 00 mm 98 Sh A-GS. Ø 24 mm. Ø 24 mm Coupling size Type Shaft distance dimension [L R ] Spider hardness Hub design without keyway Finish bore Hub design without keyway Finish bore 111
Backlash-free shaft coupling Displacements Due to its design the ROTEX GS is able to absorb axial, angular and radial misalignment, without causing any wear or premature failure of the coupling. As the spider is only stressed under pressure it is ensured that the coupling will remain backlash-free even after a longer operation period. ROTEX GS ROTEX GS Axial misalignment L Kupplungstechnik Kupplungstechnik Kr Ka In case of pure angular misalignment the imagined bisecting lines of the shafts intersect in the middle of the coupling. Up to a certain permissible extent this displacement can be absorbed by the coupling without any danger of extensive restoring forces. Radial misalignment As an example, axial misalignment may be produced by different tolerances of the connecting elements during the assembly or by alteration of the shaft length if fluctuation of temperature occurs. As the shaft bearings usually cannot be axially stressed to a big extent, it is the task of the coupling to compensate for this axial misalignment and to keep the reaction forces low. ROTEX GS Angular misalignment In case of larger displacements (especially radial displacements) the ROTEX GS DKM double cardanic design should be applied in order to avoid excessive restoring forces. Kupplungstechnik Radial misalignment results from parallel displacement of the shafts towards each other, caused by different tolerances at the centerings or by mounting of the power packs on different levels. Due to the kind of misalignment the largest restoring forces are produced here, consequently causing the highest stresses for the adjacent components. Displacement standard design Displacements DKM ROTEX GS GS [mm] [mm] [degrees] [mm] [mm] [degrees] spider Axial Radial Angular Axial Radial Angular Ka 2) Kr Ka 2) Kr Kr 0 0, 1,2 0,1 1,2 80 + 0,4 0, 1,1 + 0,4 0,1 1,1 92 0,2 0,06 1,0 0,4 0, 1,0 98 0,04 0,9 0,13 0,9 80 0,1 1,1 0,23 1,1 92 + 0,6 0, 1,0 + 0,6 0,21 1,0 98 0,3 0,06 0,9 0,6 0,19 0,9 64 0,04 0,8 0,1 0,8 80 0,19 1,1 0,29 1,1 92 + 0,8 0,13 1,0 + 0,8 0,26 1,0 9 98 0,4 0,08 0,9 0,8 0,24 0,9 64 0,0 0,8 0,21 0,8 80 0, 1,0 0,3 1,1 92 + 0,9 0, 1,0 + 0,9 0,32 1,0 98 0,4 0,08 0,9 0,9 0,29 0,9 64 0,0 0,8 0,2 0,8 80 0,21 1,1 0,40 1,1 92 + 1,0 0,1 1,0 + 1,0 0,3 1,0 98 0, 0,09 0,9 1,0 0,33 0,9 64 0,06 0,8 0,29 0,8 80 0,1 1,1 0,49 1,1 92 + 1,2 0, 1,0 + 1,2 0,4 1,0 19 98 0, 0,06 0,9 1,0 0,41 0,9 64 0,04 0,8 0,36 0,8 24 92 0, 1,0 0,9 1,0 + 1,4 + 1,4 98 0, 0,9 0,3 0,9 0, 1,0 64 0,0 0,8 0,4 0,8 28 92 0,1 1,0 0,66 1,0 + 1, + 1, 98 0,11 0,9 0,60 0,9 0, 1,4 64 0,08 0,8 0,3 0,8 92 0,1 1,0 0, 1,0 + 1,8 + 1,8 98 0, 0,9 0,69 0,9 0, 1,4 64 0,09 0,8 0,61 0,8 42 92 0,19 1,0 0,84 1,0 + 2,0 + 2,0 98 0, 0,9 0, 0,9 1,0 2,0 64 0, 0,8 0,6 0,8 48 92 0,23 1,0 0,91 1,0 + 2,1 + 2,1 98 0,16 0,9 0,82 0,9 1,0 2,0 64 0,11 0,8 0,3 0,8 92 0,24 1,0 1,01 1,0 + 2,2 + 2,2 98 0,1 0,9 0,91 0,9 1,0 2,0 64 0, 0,8 0,81 0,8 6 9 + 2,6 0,18 0,9 64 1,0 0,13 0,8 9 + 3,0 0,21 0,9 64 1, 0,1 0,8 2) The Ka figures mentioned above have to be added to the length of the corresponding coupling type. Shaft misalignment ROTEX GS... DKM Axial misalignment Radial misalignment Angular misalignment L Ka This design reduces the restoring forces arising with radial misalignment to a minimum, due to the double-jointed operation, additionally the coupling is able to compensate for higher axial and angular misalignment. The above-mentioned permissible displacement figures of the flexible ROTEX GS couplings are standard values, taking into account the coupling load up to the rated torque T KN of the coupling and an operating speed n = 0 min -1 along with an ambient temperature of + C. The displacement figures may, in each case, merely be used individually - if they occur simultaneously they may only be used proportionately. The ROTEX couplings are in a position to compensate for radial and angular displacements. Careful and accurate alignment of the shafts increases the service life of the coupling. 1
Design ZR1-ZR3 Displacements and technical data Axial displacements ROTEX GS 98Sh A-GS [mm] Axial K a Displacements [mm] Radial K r 1) [degrees] Angular Radial displacements K r = (L ZR - 2 l 1 - E) tan Angular displacements [degree] 19 24 28 42 48 6 +1,0-1,0 +1,2-1,0 +1,4-1,0 +1, -1,4 +1,8-1,4 +2,0-2,0 +2,1-2,0 +2,2-2,0 +2,6-2,0 1,16,6,48, 13,92 13,3 13,1 13,19,80 0,9 0,9 0,9 0,9 0,9 0,9 0,9 0,9 0,9 Calculation of total torsion spring stiffness: 1 C total = [Nm/rad] 2 1 L + pipe C 1 C 2 L ZR - 2 L with L pipe = [m] 00 C 1 = torsion spring stiffness for spider page 0 C 2 = from table page 1/111 1) Radial displacements based on coupling length L ZR = 00 mm 2) L = L ZR - 2 l 2 ROTEX GS TOOLFLEX Chart of critical speeds for design ZR3 ROTEX GS 19 ROTEX GS 24 ROTEX GS 28 ROTEX GS ROTEX GS 42 ROTEX GS 48 Operating speed [1/min] Example: ROTEX GS 19 Operating speed: 0 1/min Max. permissible shaft distance dimension: 100 mm Operating speed = n krit /1,4 Shaft distance dimension L R [mm] 113
TOOLFLEX - Metal bellow-type couplings Backlash-free, torsionally stiff and maintenance-free coupling The TOOLFLEX is a coupling system that has proven successfully many times (metal bellowtype coupling). Its most important features are the good compensation for displacements (axial, radial and angular), the high torsional stiffness as well as the easy and fast assembly of the clamping hub. Examples of applications: Machine tools, positioning systems (e. g. ball roll spindles with high pitch), indexing tables, planet gears with low transmissions for precise positioning Proven joint procedure, ensuring: non-positive, backlash-free connection of the aluminium hubs with the multilayer bellows made from stainless steel safe torque transmission of every bellow layer into the hub fatigue strength in high temperature ranges up to max. 280 C and in case of influences of media or critical operating conditions Proven shaft-hub connection Clamping hubs with two slots, ensuring: easy assembly of the clamping hubs through radial clamping screw no deformation of the bellow when tightening the clamping screw by two slots in the hub bore tolerance F for easier assembly onto the shaft clamping hub with two slots 1
TOOLFLEX - Metal bellow-type couplings Backlash-free, torsionally stiff and maintenance-free coupling Coupling selection Normally the TOOLFLEX is selected according to the nominal torque (T KN ) shown in the list of technical data, like all other coupling systems. In all cases the torque (T KN ) must exceed the maximum torque to be transmitted. This should mainly be considered in connection with servo motors because their accelerating torques both positive and negative can exceed the nominal torque of the coupling by a significant amount. Judgement calculation P max TAS = 90 n T KN T AS/LS k P max = max. engine performance [kw] n = engine speed [min -1 ] T AS T LS k = peak torque of the engine = peak torque of load side = operating factor ROTEX GS TOOLFLEX k = 1. with uniform movement, k = 2 with ununiform movement, k = 2. - 4 with shocking movement For s in machine tools (servo motors) k values of 1. - 2 must be used. When selecting servo motors the calculations are made with the torque values of the engine suppliers and not with P max. When dimensioning the coupling please use the respective data of the manufacturer considering the servo controller to be used. Accelerating torque ( side / load side) T KN > T S T S = T AS m A k J L ma = J A + J L T S = T LS m L k J A ml = J A + J L T S m A m L J A J L = accelerating torque ( or n side) = -side shock = n-side shock = moment of inertia of the side = moment of inertia of the n side Torsional stiffness Transmission error of the metal bellow due to torsional strain 180 T AS = C T C T = torsional angle [degrees] = torsional stiffness of the coupling [m/rad] Natural frequency The natural frequency of the coupling must be above or below the frequency of the unit. Valid for the mechanical spare model of the 2-mass-system: 1 J L + J A fe = C T [Hz] 2 J L J A f e = frequency of the 2-mass-system [s -1 ] f r = exciting frequency of the [s -1 ] Valid in practice: f e 2 f r Note: In case of values exceeding T KN only limited alternating load figures are possible. In this torque range there can be remaining deformations of the bellow and fatigue fractures can occur. 11
TOOLFLEX - Metal bellow-type couplings Basic programme Basic programme TOOLFLEX miniature 9 Hub design 1.1 1.1 2. 1.1 2. 1.1 2. [mm] according to ISO fit F Ø2 Ø3 Ø4 Ø Ø6 Ø6,3 Ø Ø8 Ø9 Ø9, Ø Ø11 Ø Ø Ø16 Basic programme TOOLFLEX M and S 16 4 Pilot bore [mm] according to ISO fit F Ø Ø6 Ø6,3 Ø Ø8 Ø9 Ø Ø11 Ø Ø Ø1 Ø16 Ø18 Ø19 Ø Ø22 Ø24 Ø2 Ø28 Ø Ø32 Ø3 Ø Ø40 Ø42 Ø4 Ø48 Ø0 Ø Type M and S sleeve dimensions for FANUC engines 1 2 Sleeve size 1 2 Dimensions [mm] L l D H D d +0,0 b JS9 t +0,1 Taper 16 2 16,9 4,2 1: 3 3 1,8 1,9 1: Notice For TOOLFLEX size 16- For TOOLFLEX size -4 Basic programme TOOLFLEX KN 4 Pilot bore [mm] according to ISO fit F Ø Ø1 Ø16 Ø18 Ø19 Ø Ø22 Ø24 Ø2 Ø28 Ø Ø32 Ø3 Ø Ø40 Ø42 Ø4 Ø48 Standard bore Further dimensions on request 116
TOOLFLEX - Metal bellow-type couplings Backlash-free, torsionally stiff and maintenance-free coupling Miniature couplings Backlash-free, torsionally stiff NEW Maintenance-free Low mass moment of inertia Easy assembly due to tolerance F Temperature range - C to + 0 C ROTEX GS TOOLFLEX TOOLFLEX M Type 1.1 TOOLFLEX M Type 2. TOOLFLEX 9 Torque T KN 0,1 1,0 1, 2,0 Circumferential speed v max = 2 m/s Technical data of type with fixing screw (type 1.1) Dimensions [mm] Perm. displacements fixing screw number 3) Angular d min d max D H L l 1 /l 2 M t z [ ] 2 3 4 8 1 2 1 1) 1 2) 18 1) 2) 21 1) 24 2) 2, 1) 31 2) 6 8 11 M2 M3 M3 M4 1,8 2 2, 2, 1 1 2 2 Axial [mm] 0,3 0,4 0,3 0,4 0,3 0, 0,4 0,6 Radial [mm] 0,1 0,1 0,1 0,1 0,1 0,2 0,1 0,2 0, 1,0 0, 1 1 1, 1 1, Torsional stiffness [Nm/rad] 9 390 0 0 80 0 980 Weight 4) [kg] 0,002 0,003 0,00 0,006 0,0 0,011 0,01 0,019 Technical data of type with clamping screw (type. 2.) TOOLFLEX Abmessungen [mm] Torque Perm. displacements clamping screw Torsional T A Axial Radial Angular stiffness T KN d min d max D H L 1 l 3 /l 4 M 1 t 1 e D K [mm] [mm] [ ] [Nm/rad] 24 1,0 3 1 0,3 0,1 0, 390 9 M2 3,2 16, 0,3 26 2) 0,4 0,1 1 0 9 1, 2,0 3 4 9 2 1) 0,3 0,1 1 0 11 M2, 3,,1 21, 0,6 33 2) 0, 0,2 1, 80 34, 1) 0,4 0,1 1 0 13 M3 4 8, 2,3 1,34 2) 0,6 0,2 1, 980 1) Design S = 4 shafts 2) Design M = 6 shafts 3) Quantity each hub, from size 9: 2x0 offset 4) Figures refer to the complete coupling with max. bores Circumferential speed v max = m/s Note: The coupling must be selected in a way that the nominal torque exceeds the maximum torque to be transmitted (accelerating or peak torque). In case of values exceeding T KN (collision, trouble) only limited alternating load figures are possible. In this torque range there can be permanent deformation of the bellow and fatigue fractures can occur. Weight 4) [kg] 0,00 0,008 0,0 0,01 0,02 0,02 Order form: TOOLFLEX M 2. d - Ø4 2. d - Ø6 Coupling size Hub design Hub design component 1 component 2 11
TOOLFLEX - Metal bellow-type couplings Backlash-free, torsionally stiff and maintenance-free coupling Type M Backlash-free, torsionally stiff Non-positive bellow-hub connection Frictionally engaged clamping hubs Maintenance-free Suitable for high temperatures due to flanged insert connection (max. 280 C) Well-resistant to corrosion due to bellow made from stainless steel and aluminium clamping hubs Thread M 1 Feather keyway acc. to DIN 688 optionally G (DIN EN ISO 462) TOOLFLEX 16 4 3) Dimensions [mm] General Clamping screws T A d min. d max. L l 1 ;l 2 E D H M 1 D 3 t 1 e 1 8 1 16 4 49 62 2 81 3 1,0 21, 23,0 2, 32,0 40,0 1 19 26 39 4 32 40 6 83 0 M4 M M6 M8 M M 3,0 43, 8,0 2,6 89,0 6,0 6 9 11,0, 19 2 3 2, 6 2 49 0 TOOLFLEX Torque T KN Speed [min -1 ] n 1) Moment of inertia 2) [x -6 kgm 2 ] Torsional stiffness [Nm/rad] Axial spring stiffness [N/mm] Technical data Radial spring stiffness Axial [N/mm] [mm] Perm. displacements Radial Angular [mm] [degrees] Mass 2) [x -3 kg] 16 900 0 29 92 ±0, 0, 1, 61 1 1190 31 6600 42 6 ±0,6 0, 1, 4 3 800 11 800 6 1 ±0,8 0,2 2,0 6 6 30 24 24900 2 2 ±0,8 0,2 2,0 448 4 0 11 64000 88 492 ±1,0 0, 2,0 1 3) 340 4800 1 960 98 ±1,0 0, 2,0 30 TOOLFLEX Bore range and respective torques of frictional engagement of the clamping hub Ø Ø6 Ø Ø8 Ø9 Ø Ø11 Ø Ø Ø1 Ø16 Ø18 Ø19 Ø Ø24 Ø2 Ø28 Ø Ø32 Ø3 Ø Ø40 Ø42 Ø4 Ø0 Ø 16 8, 8,8 9,1 9,4 9, 9,9,2, 11,1 11,4 11, 1,6 18,1 18,6 19 19,, 21 21,4 22,4 22,9 23,3 33 34 3 36 36,4, 39 42 42, 44, 46 84 8 8 92 93 9 99 1 9 4 1 16 16 13 1 181 18 193 19 0 6 39 401 413 421 429 441 43 462 40 482 02 22 1) With v= 2 m/s 2) Figures refer to the complete coupling with max. bores Note: The coupling must be selected in a way that the nominal torque exceeds the maximum torque to be transmitted (accelerating or peak torque). In case of values exceeding T KN (collision, trouble) only limited alternating load figures are possible. In this torque range there can be permanent deformation of the bellow and fatigue fractures can occur. Order form: TOOLFLEX M d 1 - Ø2 d 2 - Ø Coupling size Component 1 Component 2 118
TOOLFLEX - Metal bellow-type couplings Backlash-free, torsionally stiff and maintenance-free coupling Type S Short design Higher stiffness of torsion spring Lower mass moment of inertia Thread M 1 Feather keyway acc. to DIN 688 optionally ROTEX GS TOOLFLEX G (DIN EN ISO 462) TOOLFLEX 16 4 3) Dimensions [mm] General Clamping screws T A d min. d max. L l 1 ;l 2 E D H M 1 D 3 t 1 e 1 8 1 16 4 4 63 69 86, 111 1,0 21, 23,0 2, 32,0 40 11 1 18 22, 31 32 40 6 83 0 M4 M M6 M8 M M 3,0 43, 8,0 2,6 89,0 6,0 6 9 11,0, 19 2 3 2, 6 2 49 0 TOOLFLEX Torque T KN Speed [min -1 ] n 1) Moment of inertia 2) [x -6 kgm 2 ] Torsional stiffness [Nm/rad] Axial spring stiffness [N/mm] Technical data Radial spring stiffness Axial [N/mm] [mm] Perm. displacements Radial Angular [mm] [degrees] Mass 2) [x -3 kg] 16 4 3) 1 3 6 340 900 1190 800 30 0 4800 1 243 933 036 400 9600 1800 3400 9800 40 1) With v= 2 m/s 2) Figures refer to the complete coupling with max. bores Info: Torques of frictional engagement of the clamping hub shown under Type M (page 118) Other designs: Type for FANUC-Motors 43 63 9 8 132 160 1 189 233 318 894 ±0,3 ±0,4 ±0, ±0,6 ±0,9 ±1,0 0,1 0,1 0, 0, 0,2 0,2 1,0 1,0 1, 1, 1, 1, 61 1 243 31 824 3213 Order form: TOOLFLEX S d 1 - Ø2 d 2 - Ø Coupling size Component 1 Component 2 119
TOOLFLEX - Metal bellow-type couplings Backlash-free, torsionally stiff and maintenance-free coupling Type KN Backlash-free, torsionally stiff NEW Non-positive bellow-hub connection High friction torques Maintenance-free Good properties of concentric running with high speeds TOOLFLEX S-KN TOOLFLEX 4 3) Torque T KN 3 6 340 Dimensions [mm] L L ges. Clamping screw Pull-off threads Number Number d min. d max. 4 shafts 1) 6 shafts 2) 4 shafts 1) 6 shafts 2) l 1 /l 2 D H D 1 D 2 M T A M 1 z z 1 1 22 28 40 6 48 6 4, 91 68 91 4 63 82, 2 63 99 116 22 26 34 40 0 60, 82 9 43 2 68 9 4 6 9 M4 M M6 M8 4,1 8, 3 M4 M M6 M8 6 6 6 6 TOOLFLEX Bore range and respective torques of frictional engagement of the clamping hub Ø Ø Ø1 Ø16 Ø19 Ø Ø24 Ø2 Ø28 Ø Ø32 Ø3 Ø Ø40 Ø42 Ø4 Ø48 Ø0 Ø 39 4 62 0 99 1 2 1 82 93 131 9 22 28 4 2 82 94 132 2 229 288 331 36 40 31 88 3) 2 12 191 2 298 34 4 489 8 690 64 842 96 10 1194 4 1) Design S = 4 shafts 2) Design M = 6 shafts 3) Hub welded with bellow Other designs: TOOLFLEX KN for FANUC engines Order form: TOOLFLEX S-KN d 1 - Ø1 d 2 - Ø22 Coupling size component 1 component 2 0