Description Symbol Definition or explanation Rated torque T KN Torque that can continuously be transmitted over the entire permissible speed range

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Cathleen Weaver
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1 Coupling selection Normally the is selected according to the nominal torque ( ) shown in the list of technical data, like all other coupling systems. In all cases the torque ( ) must exceed the maximum torque to be transmitted (accelerating or peak torque). 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. In case of values exceeding (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. Description ymbol Definition or explanation Rated torque that can continuously be transmitted of coupling over the entire permissible speed range Peak torque of machine T Peak torque on the coupling Peak torque on the T A Peak torque with torque shock on the driving side, driving side e. g. breakdown torque of the electric motor Peak torque of T L Peak torque with torque shock on load load side side, e. g. braking Moment of inertia J A/L Total of moments of inertia existing on the driving or load side referring to the coupling speed Rotational inertia m A Factor taking into account the mass coefficient of driving distribution with shocks and vibrations side produced on the driving side Rotational inertia m L Factor taking into account the mass coefficient of load distribution with shocks and vibrations side produced on the load side Description ymbol Definition or explanation max. engine P max. max. power in kw which the engine may produce performance engine speed n Rated speed in rpm of the engine angle Transmission error of the metal bellow due to torsional strain C T of the coupling in Nm/rad. For data see tables shown on the following pages. Frequency of the f e in s- 1 2-mass-system Eexciting frequency of f r in s -1 the drive Operating factor k k = 1.5 with uniform movement k = 2,0 with ununiform movement k = with shocking movement For drives in machine tools (servo motors) k values of must be used. Judgement calculation The size of the coupling must be selected so that the following conditions are met. T A/L k P max [kw] = 9550 n [rpm] 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. ROTEX -G Accelerating torque (drive side / load side) > T T = T A m A k T = T L m L k J L m A = J A + J L J A m L = J A + J L Inspection of torsional 180 T A = C T Inspection of resonance 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 f e = C T [Hz] 2 J L J A Valid in practice: f e 2 f r 145

2 Basic programme Basic programme miniature ( according to IO fit F7) ize Hub design , , Basic programme type M and ( according to IO fit F7) ize 5 6 6, ize 1 ize 2 Type M and sleeve dimensions for FANUC engines leeve size L l D H D d +0,05 b J9 t +0,1 Taper Notice ,9 4 12,2 1:10 For TOOLFLEX size ,8 5 17,9 1:10 For TOOLFLEX size Basic programme type KN ( according to IO fit F7) Pilot Further dimensions on request 146

Miniature couplings Low mass moment of inertia Easy assembly due to tolerance F7 Temperature range - 30 C to + 100 C from Ø 6 mm also available with feather key acc. To DIN 6885 sheet 1 J9 Type 1.

3 Miniature couplings Low mass moment of inertia Easy assembly due to tolerance F7 Temperature range - 30 C to C from Ø 6 mm also available with feather key acc. To DIN 6885 sheet 1 J9 Type 1.1 Type 2.5 ize Design 1/ Technical data of type with fixing screw (type 1.1) General Fixing screw C T number 3) Axial Radial Angular d min. d max. D H dh L l 1 ; l 2 M t z [degrees] [Nm/rad] [kg] 15 1) 0,30 0,10 0,7 97 0,0027 0, M2 1,8 1 M 17 0,40 0,15 1,0 75 0, ) 0,30 0,10 0, ,005 1, M3 2,0 1 M 20 0,40 0,15 1, , ) 0,35 0,15 1, ,010 1, M3 2,5 2 M 24 0,50 0,20 1, ,011 27,5 1) 0,40 0,15 1, ,017 2, M4 2,8 2 M 31 0,60 0,20 1, , ,3 0,15 1, ,046 5, M5 4 2 M 41 0,5 0,20 1, , ,4 0,15 1, , M ,6 0,20 1, ,082 Circumferential speed v max = 25 m/s Weight 4) ROTEX -G ize 7 9 Design 1/ Technical data of type with clamping screw (type. 2.5) zul. Verlagerungen General Clamping screw T d min. d A max. D H d H L 1 l 3 ; l 4 M 1 t 1 e D K 24 1) 0,3 0,1 0, ,007 1, M2 3,2 5,0 16,5 0,37 M 26 0,4 0,15 1, , ) 0,35 0,15 1, ,014 1, M2,5 3,5 7,1 21,5 0,76 M 33 0,5 0,2 1, ,015 34,5 1) 0,4 0,15 1, , , M3 4,0 8,5 26,5 1,34 M 38 0,6 0,2 1, ,027 1) 3) Design = 4 shafts Design M = 6 shafts Quantity each hub, from size 9: 2x120 offset 4) Figures refer to the complete coupling with max. s Circumferential speed v max = 20 m/s Axial Radial Angular [degrees] C T [Nm/rad] Weight 4) [kg] 7M Hub design Hub design 147

Type M Non-positive bellow-hub connection Frictionally engaged clamping hubs uitable for high temperatures due to flanged insert connection (max.

4 Type M Non-positive bellow-hub connection Frictionally engaged clamping hubs uitable for high temperatures due to flanged insert connection (max. 200 C) Well-resistant to corrosion due to bellow made from stainless steel and aluminium clamping hubs from Ø 6 mm also available with feather key acc. To DIN 6885 sheet 1 J9 Thread M 1 Feather keyway acc. to DIN 6885 optionally G (DIN EN IO 476 TOOLFLEX Type M ize General Clamping screws d min. d max. L l 1 ; l 2 E D H d H M 1 D 3 t 1 e 1 TA , M4 35,0 5 12,0 2, , M5 43,5 6 14, , M6 58, , M8 72, , M8 76, , M10 89, ) , M12 106, Technical data peed Moment of Axial spring Radial spring Mass ize n 1) inertia C T Axial Radial Winkel [rpm] [x10-6 kgm 2 ] [Nm/rad] [Grad] [x10-3 kg] ±0,5 0,20 1, ±0,6 0,20 1, ±0,8 0,25 2, ±0,8 0,25 2, ±0,8 0,25 2, ±1,0 0,30 2, ) ±1,0 0,30 2, ize Bore range and respective torques of frictional engagement of the clamping hub ,5 8,8 9,1 9,4 9,7 9,9 10,2 10,5 11,1 11,4 11, ,6 18,1 18,6 19,0 19,5 20,5 21,0 21,4 22,4 22,9 23, , , ,5 44, ) ) With v= 25 m/s Figures refer to the complete coupling with max. s 3) Hubs from steel welded with bellow 30 M

Type hort design Higher of torsion spring Lower mass moment of inertia from Ø 6 mm also available with feather key acc. To DIN 6885 sheet 1 J9 Thread M 1 Feather keyway acc.

5 Type hort design Higher of torsion spring Lower mass moment of inertia from Ø 6 mm also available with feather key acc. To DIN 6885 sheet 1 J9 Thread M 1 Feather keyway acc. to DIN 6885 optionally G (DIN EN IO 476 TOOLFLEX Type ize General Clamping screws d min. d max. L l 1 ; l 2 E D H d H M 1 D 3 t 1 e 1 TA , M4 35,0 5 12,0 2, , M5 43,5 6 14, , M6 58, , M8 72, , M8 76, ,5 32,0 22, M10 89, ) , M12 106, ize peed n 1) [rpm] Moment of inertia [x10-6 kgm 2 ] C T [Nm/rad] Technical data Axial spring Radial spring ±0,3 0,15 1, ±0,4 0,15 1, ±0,5 0,20 1, ±0,6 0,20 1, ±0,6 0,20 1, ±0,9 0,25 1, ) ±1,0 0,25 1, Axial Radial Winkel [Grad] Mass [x10-3 kg] ROTEX -G 1) With v= 25 m/s Figures refer to the complete coupling with max. s 3) Hubs from steel welded with bellow Info: s of frictional engagement of the clamping hub shown under Type M (page 148) Other designs: Type for FANUC-Motors

Type KN Non-positive bellow-hub connection High friction torques Good properties of concentric running with high speeds Maximum speed up to 40 m/s circumferential speed -KN Type KN ize L L ges.

6 Type KN Non-positive bellow-hub connection High friction torques Good properties of concentric running with high speeds Maximum speed up to 40 m/s circumferential speed -KN Type KN ize L L ges. Clamping screw Pull-off threads 4) d min. d max. 4 shafts 1) 6 shafts 4 shafts 1) 6 shafts l 1 ; l 2 D H D 1 D 2 M T A Number z M 1 Number z T A M4 2,9 12 M4 6 1, , M M5 6 1, M M5 6 1, , , M M ) , M M8 6 6 Bore range d and the corresponding transmittable torques T R of frictional engagement of the clamping hub ize ) ) 3) Design = 4 shafts Design M = 6 shafts Hubs from steel welded with bellow 4) After assembly of the clamping screws (M) tighten the pull-off thread (M 1 ) to the torque T A1 indicated. Other designs: KN for FANUC engines 38 -KN

Type PI Axial plug-in uitable for high temperatures due to flanged insert connection Well-resistant to corrosion due to bellow made from stainless steel and aluminium clamping hubs Optionally type M

to DIN 6885 optionally Thread M 2 Thread M 1 Prestress ize 20 30 38 42 45 ize 20 30 38 42 45 Design d 1 ;d 2 min. d 1 max. d 2 max.

7 Type PI Axial plug-in uitable for high temperatures due to flanged insert connection Well-resistant to corrosion due to bellow made from stainless steel and aluminium clamping hubs Optionally type M (6 shafts) - higher perm. displacements or Type (4 shafts, short design) - higher of torsion spring - lower mass moment of inertia Feather keyway acc. to DIN 6885 optionally Thread M 2 Thread M 1 Prestress ize ize Design d 1 ;d 2 min. d 1 max. d 2 max. L 1) l 1 l 2 E D H H M 1 ;M 2 D 3 e t 1 ;t 2 T A 67,0 12, ,5 33,5 40 0,5-1 M5 43,5 14,5 6 6 M 74,0 19,0 73,5 17, ,0 33,5 M 82,5 26,0 87,5 18, ,5 44,0 M 99,5 30,0 93,0 24, ,0 M 104,0 35,0 96,0 22, ,0 41,5 M 112,5 39,0 Design peed n 3) [min -1 ] Plug in metal bellow-type coupling type PI Moment of inertia [x10-6 kgm 2 ] General Technical data C T [Nm/rad] Axial spring 55 0,5-1 M6 58,0 19, ,5-1,5 M8 72,6 25, M8 76,1 25, ,5-1,5 M10 89,0 30, Radial spring Clamping screws Radial Angular [degrees] ,15 1, M ,20 1, ,20 1, M ,25 2, ,20 1, M ,25 2, ,20 1, M ,25 2, ,25 1, M ,30 2, Mass [x10-3 kg] ROTEX -G Transmittable friction torque of clamping hubs d 1 / d 2 ize ,6 18,1 18,6 19,0 19,5 20,5 21,0 21,4 22,4 22,9 23, ,0 34,0 35,0 36,0 36,4 38,0 38,5 39,0 42,0 42,5 44, ,0 85,0 87,0 92,0 93,0 97,0 99,0 101, ,0 165,0 167,0 173,0 177,0 181,0 187,0 193,0 197,0 200,0 1) When being plugged in Figures refer to the complete coupling with max. s 3) With v= 25 m/s 30 PI- d 1-22 d 2-18 Component 1 Component 2 151

TOOLFLEX RADEX -NC. Backlash-free shaft couplings: backlash-free flexible shaft couplings. backlash-free torsionally stiff bellow-type couplings

TOOLFLEX RADEX -NC. Backlash-free shaft couplings: backlash-free flexible shaft couplings. backlash-free torsionally stiff bellow-type couplings Backlash-free shaft couplings: ROTEX GS backlash-free flexible shaft couplings TOOLFLEX backlash-free torsionally stiff bellow-type couplings RADEX -NC backlash-free torsionally stiff servo lamina coupling