ROBA -ES Backlash-free flexible shaft coupling

Transcription

1 ROBA -ES Bcklsh-free flexible shft coupling l Simple plug-in instlltion l Vibrtion-dmping function l Mintennce-free K.940.V11.GB your relible prtner

2 ROBA -ES for smooth running in vibrtion-criticl drive systems ROBA -ES A flexible coupling in high-precision servo xes? This concept is not contrdiction in terms, s the ROBA -ES coupling convinces customers even in criticl pplictions with bcklsh-free torque trnsmission, idel rigidity nd optimum vibrtion dmping. ROBA -ES, the lterntive to torsionlly rigid shft couplings. Bcklsh-free torque trnsmission due to pre-tensioned str-shped elstomer element through which hrdness, rigidity nd dmping behviour cn be vried. Compenstion of rdil, xil nd ngulr shft mislignment. Simple plug-in instlltion, mintennce-free function, gent resistnce nd temperture resistnce gurntee highest opertionl sfety. ROBA -ES - flexible nd bcklsh-free smrtflex - torsionlly rigid nd bcklsh-free Bcklsh is the ngulr tolernce between the input nd the output, lso known s torsionl bcklsh. Mny conventionl flexible couplings re subject to bcklsh due to their construction type. The myr -couplings ROBA -ES, smrtflex nd ROBA -DS Type series trnsmit the torque bcklsh-free. The couplings differ in dmping behviour nd torsionl rigidity: Torque Clockwise rottion Anti-clockwise rottion Stndrd flexible coupling ROBA -ES smrtflex The ROBA -ES is torsionlly rigid nd cn dmp vibrtions to smll extent. Its torsionl rigidity is 2 to 4 times higher thn toothed belt drive. The smrtflex nd ROBA -DS re torsionlly rigid ll-metl couplings. They feture the smllest torsionl ngle t mximum torque. Due to the trnsmission element design in steel, they hve no dmping chrcteristics. ϕ bcklsh ϕ bcklsh = 0 ϕ bcklsh = 0 ϕ mx torsionl ngle with T K mx ϕ mx ROBA -ES couplings re lso vilble in ATEX design ccording to the directive 94/9 EC (ATEX 95).

3 ROBA -ES Contents Elstomeric Elements Pge 4 Nominl torques 4 to 1040 Nm Temperture Influence Pge 4 Agent Resistnce Pge 4 Mx. xil displcement 2,6 mm Torques Pge 5 Mx. rdil mislignment 0,25 mm Perm. Mislignment Vlues Pge 5 Mx. ngulr mislignment 1,3 Spring Rigidity Pge 5 ROBA -ES with keywys Type 940._22._ Pge 6 Nominl torques 4 to 1040 Nm Technicl Dt Pge 6 Bores 6 to 80 mm Dimensions Pge 6 Mx. xil displcement 2,6 mm Order Exmple Pge 6 Mx. rdil mislignment 0,25 mm Mx. ngulr mislignment 1,3 ROBA -ES with clmping hubs Type 940._00._ Pge 7 Nominl torques 4 to 1040 Nm Technicl Dt Pge 7 Bores 6 to 80 mm Dimensions Pge 7 Mx. xil displcement 2,6 mm Order Exmple Pge 7 Mx. rdil mislignment 0,25 mm Mx. ngulr mislignment 1,3 ROBA -ES with luminium shrink disk hubs Type 940._11. A Pge 8 Nominl torques 4 to 405 Nm Technicl Dt Pge 8 Bores 6 to 45 mm Dimensions Pge 8 Mx. xil displcement 1,8 mm Order Exmple Pge 8 Mx. rdil mislignment 0,2 mm Mx. ngulr mislignment 1,3 ROBA -ES with steel shrink disk hubs Types 940._11.P nd 940._11.F Pge 9 Nominl torques 4 to 1040 Nm Technicl Dt Pge 9 Bores 6 to 75 mm Dimensions Pge 9 Mx. xil displcement 2,6 mm Order Exmple Pge 9 Mx. rdil mislignment 0,25 mm Mx. ngulr mislignment 1,3 Frictionlly-locking trnsmittble torques on clmping nd shrink disk hubs Pge 10 Technicl Explntions Pge 12 Instlltion Guidelines nd Exmples Pge 13 Coupling Dimensioning Pge 14 3

4 ROBA -ES elstomeric elements Elstomeric Elements The elstomeric elements re the centrl element of the ROBA -ES-coupling. They define the ppliction rnge s well s the shft connection behviour vi the permitted torque, rigidity, dmping nd mislignment vlues. By using unique polyurethne mteril nd specil injection procedure, it is possible to chieve high dimensionl ccurcy nd evenness in the teeth of the elstomeric element. The elstomeric elements re vilble in different shore hrdnesses. The teeth of the elstomeric element re chmfered t the sides. This mkes blind instlltion esier. Elstomeric element hrdness [Shore] Colour Permnent temperture Permitted temperture rnge Temporry mx. temperture 80 Sh A Blue -50 to +80 C -60 to +120 C 92 Sh A Yellow -40 to +90 C -50 to +120 C 98 Sh A Red -30 to +90 C -40 to +120 C 64 Sh D Green -30 to +100 C -40 to +140 C Temperture Influence The mbient tempertures present during opertion hve considerble effect on the dimensioning of ROBA -ES-coupling (see Dimensioning pge 14). Dimensioning The chrcteristics of ROBA -ES couplings cn be gretly vried by using different elstomeric elements. Due to different dmping chrcteristics nd the non-liner rigidity of the elstomer, this element lso offers more prmeters thn the steel shft connection, which should be tken into ccount on selection. We therefore recommend creful, thorough coupling dimensioning (see Dimensioning pge 14). Agent Resistnce The elstomeric elements re very resistnt ginst: pure minerl oils (lubricting oils) nd nhydrous greses. They hve similr resistnce ginst fuels such s regulr-grde petroleum diesel oil kerosene. Dmge my occur fter longer exposure to lcohols or romtic fuels (super/four str petrol). The elstomeric element mteril used is resistnt to hydrolysis. In contrst to other polyurethne mterils, wter (including sewter) cuses, even fter yers of exposure, no prticulr chnges to the mechnicl chrcteristics. Hot wter, however, reduces the mechnicl strength. For informtion on contct with specil gents or rdition, plese contct the mnufcturers. 4 Plese Observe: According to Germn nottion, deciml points in this document re represented with comm (e.g. 0,5 insted of 0.5). We reserve the right to mke dimensionl nd constructionl ltertions.

5 ROBA -ES elstomeric elements Torques Elst. element hrdness 80 Sh A (blue) T KN 2) T K mx Elst. element hrdness 92 Sh A (yellow) T KN 2) Torque Type 940. _._ 1) T K mx Elst. element hrdness 98 Sh A (red) T KN 2) T K mx Elst. element hrdness 64 Sh D (green) T 2) KN T K mx [Nm] [Nm] [Nm] [Nm] [Nm] [Nm] [Nm] [Nm] Only vilble on P-design (pge 9) , ) The permitted mx. torque for Types 940._00._ nd 940._11._ is dependent on bore dimeter d3/d4, see Tbles 1 to 4, pges 10 nd 11. 2) For permitted lternting torques, see Coupling Dimensioning pge 14. Permitted Mislignment Vlues Shft mislignments Axil Rdil Angulr DK 80/92/98 Sh A 64 Sh D DK r 80 Sh A DK r 92 Sh A DK r 98 Sh A DK r 64 Sh D 80 Sh A 92 Sh A 98 Sh A 64 Sh D [mm] [mm] [mm] [mm] [mm] [ ] [ ] [ ] [ ] 14 1,0 0,21 0,15 0,09 0,06 1,1 1,0 0,9 0,8 19 1,2 0,15 0,1 0,06 0,04 1,1 1,0 0,9 0,8 24 1,4 0,18 0,14 0,1 0,07 1,1 1,0 0,9 0,8 28 1,5 0,2 0,15 0,11 0,08 1,3 1,0 0,9 0,8 38 1,8-0,17 0,12 0,09-1,0 0,9 0,8 42 2,0-0,19 0,14 0,1-1,0 0,9 0,8 48 2,1-0,21 0,16 0,11-1,0 0,9 0,8 55 2,2-0,24 0,17 0,12-1,0 0,9 0,8 65 2,6-0,25 0, ,0 0,9 - Only vilble on P-design (pge 9) ,0 0,21 0,15 0,09 0,06 1,1 1,0 0,9 0, ,5 1,2 0,15 0,1 0,06 0,04 1,1 1,0 0,9 0, ,4 0,18 0,14 0,1 0,07 1,1 1,0 0,9 0,8 Spring Rigidity Sttic torsionl spring rigidity Dynmic torsionl spring rigidity Sttic rdil spring rigidity C T stt. 80 Sh A C T stt. 92 Sh A C T stt. 98 Sh A C T stt. 64 Sh D C T dyn. 80 Sh A C T dyn. 92 Sh A C T dyn. 98 Sh A C T dyn. 64 Sh D C r 80 Sh A C r 92 Sh A C r 98 Sh A C r 64 Sh D [Nm/rd.] [Nm/rd.] [Nm/rd.] [Nm/rd.] [Nm/rd.] [Nm/rd.] [Nm/rd.] [Nm/rd.] [N/mm] [N/mm] [N/mm] [N/mm] Only vilble on P-design (pge 9) ,

6 ROBA -ES with keywys Type 940._22._ ROBA -ES with keywys Type 940._22._ s 14 to 65 L Drwn offset Ø D H Ø d 5 Ø d H s b s l 1 E (l 1 ) t Ø d 5 G ROBA -ES couplings re delivered s un-bored hub design (further processing to be crried out customer-side) or with finish bore nd keywy JS9 (DIN 6885/1). An djusting screw is locted in the hub for xil securement, which is offset by 180 to the keywy (see Fig. right). Up to size 38, the hubs re mde of luminium. From size 42, they re mde of steel. Conventionl bores cn be delivered from stock. Fig. 1: Type 940._22._ Technicl Dt nd Bores 1) Minimum hub bore 2) d 5 min [mm] Mximum hub bore 2) d 5 mx [mm] Mximum speed n mx [rpm] Mss moments of inerti per hub nd J [10-6 kgm 2 ] 2,8 20,4 50,8 200,3 400, Weight mx. bore [kg] 0,020 0,066 0,132 0,253 0,455 1,85 2,52 4,14 5,96 Dimensions 2) b D H d H 10, E G M4 M5 M5 M6 M8 M8 M8 M10 M10 L l s 1,5 2,0 2,0 2,5 3,0 3,0 3,5 4,0 4,5 t ) Further sizes nd Types vilble on request. We reserve the right to mke dimensionl nd constructionl ltertions. 2) Recommended tolernce connection H7/k6. Order number / / / s 14 to 65 Elst. element hrdness 98 Sh A (red) Elst. element hrdness 92 Sh A (yellow) Elst. element hrdness* 80 Sh A (blue) Elst. element hrdness** 64 Sh D (green) Aluminium design up to size 38 Steel design from size 42 A F Bore ø d 5 H7 (see Tble) Bore ø d 5 H7 (see Tble) 6 Exmple: 42 / F / Ød 5 30 / Ød 5 30 * Only up to size 28; ** Only up to size 55

7 ROBA -ES with clmping hubs Type 940._00._ ROBA -ES with clmping hubs Type 940._00._ s 14 to 65 Ø D H Ø d 3 Ø d H L s b s l 1 E (l 1 ) Ø d 3 t 1 M 1 Ø D K t 2 ROBA -ES couplings with clmping hubs re conceived for fst nd sfe instlltion or de-instlltion. They hve no keywy. The tightening torque (T A ) on the clmping screws must be mintined in order to ensure relible, frictionlly-locking torque trnsmission. Plese observe the mximum permitted torques (Tble 4, pge 11). Up to size 38, the hubs re mde of luminium. From size 42, they re mde of steel. The clmping hub cn be designed with n dditionl keywy on request. Fig. 2: Type 940._00._ Technicl Dt nd Bores Dimensions 1) Minimum hub bore 2) d 3 min [mm] Mximum hub bore 2) d 3 mx [mm] Mximum speed n mx [rpm] Mss moments of inerti per hub nd J [10-6 kgm 2 ] 2,8 20,4 50,8 200,3 400, Weight mx. bore [kg] 0,020 0,066 0,132 0,253 0,455 1,85 2,52 3,89 5,62 Tightening torques Socket set screws T A [Nm] 1, ) b D H D K 32, ,4 72,6 83,3 78, d H 10, E L l M 1 M3 M6 M6 M8 M8 M10 M12 M12 M14 s 1,5 2,0 2,0 2,5 3,0 3,0 3,5 4,0 4,5 t 1 5, , ,5 t ) Further sizes nd Types vilble on request. We reserve the right to mke dimensionl nd constructionl ltertions. 2) For trnsmittble torques dependent on bore, see Tble 4, pge 11. Order number / / / s 14 to 65 Elst. element hrdness 98 Sh A (red) Elst. element hrdness 92 Sh A (yellow) Elst. element hrdness* 80 Sh A (blue) Elst. element hrdness 64 Sh D (green) Aluminium design up to size 38 Steel design from size 42 A F Bore ø d 3 F7 Bore ø d 3 F7 (see Tble) In the slotted re, the bore tolernces cn devite Exmple: 42 / F / Ød 3 30 / Ød 3 30 * Only up to size 28; ** Only up to size 55 7

8 ROBA -ES with luminium shrink disk hubs Type 940._11.A ROBA -with luminium shrink disk hubs Type 940._11.A s 14 to 38 L Ø D H Ø d 4 Ø d H 1 mm 1 mm Ø d 4 On this design, the hub body is mde of luminium nd the ring of phosphted, nneled steel. The design is constructionlly identicl to the P-design (pge 9). The symmetry, the bsence of keywys nd rdil bores produces n optimum shft run out. Therefore, much higher torques re possible compred to the other hub designs (plese observe the Blncing Digrm, pge 12). The torque is trnsmitted vi frictionl locking onto the shft. Therefore, plese observe the mximum torques on this shft-hub connection (Tble 1, pge 10). s b s l 1 E (l 1 ) Fig. 3: Type 940._11.A Technicl Dt nd Bores Minimum hub bore 1) d 4 min [mm] Mximum hub bore 1) d 4 mx [mm] Mximum speed n mx [rpm] Mss moments of inerti per hub nd J [10-6 kgm 2 ] Weight mx. bore [kg] 0,049 0,12 0,28 0,45 0,95 Tightening torques Clmping screws T A [Nm] 1,3 3,0 6,0 6,0 10,0 Dimensions b D H d H 10, E L l 1 18, M 2 4 x M3 6 x M4 4 x M5 8 x M5 8 x M6 s 1,5 2,0 2,0 2,5 3,0 1) For trnsmittble torques dependent on bore, see Tble 1, pge 10. We reserve the right to mke dimensionl nd constructionl ltertions. Order number / A / / s 14 to 38 Elst. element hrdness 98 Sh A (red) Elst. element hrdness 92 Sh A (yellow) Elst. element hrdness* 80 Sh A (blue) Elst. element hrdness** 64 Sh D (green) Aluminium design A Bore ø H7 d 4 (see Tble) Bore ø d 4 H7 (see Tble) 8 Exmple: 38 / A / Ød 4 30 / Ød 4 30 *Only up to size 28; ** Only up to size 55

9 ROBA -ES with steel shrink disk hubs Type 940._11._ ROBA -ES with steel shrink disk hubs Type 940._11._ s to 65 On this design, the hub body is mde of steel (oiled) nd the ring of phosphted, nneled steel. This design is vilble in stndrd vrint nd vrint ccording to DIN The DIN vrint hs n elstomeric element with centrl, stndrdised bore nd stndrdised bore dimeters in the hubs. The DIN vrints re conceived for use in short bore spindles nd multi-spindle heds. Becuse of the steel hubs, this DIN design combines robustness with precision. This design should be selected in preference to others, in prticulr on pplictions with hevily tumescent or lternting lods. L L Ø D H Ø d 4 Ø d H t 2 Ø d 4 Ø d 6 Ø D H Ø d 4 Ø d H Ø d 7 * t 2 Ø d 4 Ø d 6 M 2 1 mm 1 mm M 2 1 mm 1 mm s b s s b s l 1 E (l 1 ) l 1 E (l 1 ) Fig. 4: Type 940._11.P s 14 to 38 Type 940._11.F s 42 to 65 Fig. 5: Type P s to 28 cc. DIN Technicl Dt nd Bores Dimensions , b D H 32 37, d H 10, d d 7 * 8,5 9,5 9,5 12,5 12,5 14, E L l 1 18, M 2 4 x M3 6 x M4 6 x M4 4 x M5 4 x M5 8 x M5 8 x M6 4 x M8 4 x M8 4 x M10 4 x M12 s 1,5 2,0 2,0 2,0 2,0 2,5 3,0 3,0 3,5 4,0 4,5 t , Minimum hub bore 1) d 4 min [mm] Mximum hub bore 1) d 4 mx [mm] DIN-bore * d 4 [mm] Mximum speed n mx [rpm] Mss moments of inerti per hub nd J [10-6 kgm 2 ] Weight mx. bore [kg] 0,1 0,16 0,19 0,33 0,44 0,64 1,3 2,3 3,1 3,61 5,52 Tightening torques Clmping screws T A [Nm] 1,3 3,0 3,0 6,0 6,0 6, ) For trnsmittble torques dependent on bore, see Tbles 2 nd 3, pges 10 nd 11. We reserve the right to mke dimensionl nd constructionl ltertions. * Elstomeric elements with DIN bore only vilble with 98 Sh A (red), Type P Order number / / / / s to 65 Elst. element hrdness 98 Sh A (red) Elst. element hrdness 92 Sh A (yellow) Elst. element hrdness* 80 Sh A (blue) Elst. element hrdness** 64 Sh D (green) Steel design up to size 38 Steel design from size 42 P F d 4 H6 up to size 38 Bore ø Bore ø Design d 4 H7 from size 42 (see Tble) d 4 H6 d 4 H7 up to from size 38 size 42 (see Tble) - DIN - No vlues for stndrd Exmple: 42 / F / Ød 4 30 / Ød 4 30 *Only up to size 28; ** Only up to size 55 9

10 Frictionlly-locking trnsmittble torques Trnsmittble torques for shrink disk hubs mde of luminium dependent on bore - Type 940._11. A Bore Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Frictionlly-locking trnsmittble torques Shrink disk hubs mde of luminium Vlid for H7 / k6 T R [Nm] Tble 1 The trnsmittble torques on the clmping connection tke the mx. tolernce bcklsh for shft tolernce k6 / bore H7 into ccount. With lrger tolernce bcklsh, the torque is reduced. Trnsmittble torques for shrink disk hubs mde of steel dependent on bore - Type 940._11. P Bore , Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Frictionlly-locking trnsmittble torques Shrink disk hubs mde of steel Vlid for H6 / k6 T R [Nm] 10 Tble 2 The trnsmittble torques on the clmping connection tke the mx. tolernce bcklsh for shft tolernce k6 / bore H6 into ccount. With lrger tolernce bcklsh, the torque is reduced.

11 Frictionlly-locking trnsmittble torques Trnsmittble torques for shrink disk hubs mde of steel dependent on bore Type 940._11. F Frictionilly-locking trnsmittble torques Shrink disk hubs mde of steel Vlid for H7 / k6 T R [Nm] Bore Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Tble 3 The trnsmittble torques on the clmping connection tke the mx. tolernce bcklsh for shft tolernce k6 / bore H7 into ccount. With lrger tolernce bcklsh, the torque is reduced. Trnsmittble torques for clmping hubs dependent on bore Type 940._00._ Frictionlly-locking trnsmittble torques Clmping hubs Vlid for F7 / k6 T R [Nm] Bore Ø6 2, Ø7 3, Ø8 3, Ø9 3, Ø10 4, Ø11 4, Ø12 5, Ø14 6, Ø15 6, Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Tble 4 The trnsmittble torques on the clmping connection tke the mx. tolernce bcklsh for shft tolernce k6 / bore F7 into ccount. With lrger tolernce bcklsh, the torque is reduced. 11

12 ROBA -ES Technicl Explntions Technicl Explntions ROBA -ES stnds for flexible (E), bcklsh-free (S) shft coupling. The device consists of two coupling hubs nd flexible, str-shped intermedite ring (Fig. 6). ROBA -ES couplings re conceived specilly for bcklshfree opertion t comprtively high speeds. ROBA -ES couplings re minly used in mesurement nd regultory technology s well s in control nd procedure technology. Coupling hub Stte of Delivery ROBA -ES couplings re delivered mnufcturer-ssembled. The str-shped intermedite ring must be pressed under light pretension (Fig. 7) into the specilly formed jws. Fig. 6 Flexible intermedite ring Fig. 7 The principle of bcklsh-free torque trnsmission is possible due to this pre-tension. ROBA -ES couplings re delivered in four torque vritions; tht is with four different flexible intermedite rings vrying in shore hrdness nd colour (see Type key pge 5). Due to the smll construction dimensions nd therefore the low mss moments of inerti, the device llows itself to be instlled even into smll instlltion spces. Shft Mislignments The ROBA -ES coupling is cpble of compensting for rdil, xil nd ngulr shft mislignments (Fig. 9), without losing their resistnce to bcklsh. However, the permitted shft mislignments shown on pge 5 must not simultneously rech their mximum vlue. If more thn one kind of mislignment tkes plce simultneously, they influence ech other. This mens tht the permitted mislignment vlues re dependent on one nother (see Fig. 8). Therefore, the sum totl of the ctul mislignments in percent of the mximum vlue my not exceed 100 %. The permitted mislignment vlues given on pge 5 refer to coupling opertion t nominl torque, n mbient temperture of +30 C nd n operting speed of 1500 rpm. Fig. 8 Rdil mislignment DK r [%] Angulr mislignment DK w [%] Axil displcement DK [%] Blncing Key hubs nd clmping hubs: Key hubs nd clmping hubs rotte t mximum speed with circumferentil speed of 30 m/s. They re not blnced for stndrd delivery. Shrink disk hubs: Shrink disk hubs cn mintin blnce qulity G = 6,3 up to speed n G (equls c. 30 m/s) without needing to be blnced. Above this speed, we recommend blncing. The hubs re blnced individully. Digrm 1 shows reference vlues. We recommend you use these vlues to blnce the coupling components. Smooth running of mchine or system is not only dependent on the blnce qulity of the coupling, but lso on mny prmeters such s rigidity or distnce to the djcent bering. Therefore there re no fixed rules in which conditions you hve to blnce. Speed [rpm] Blncing recommended n mx n G DK r L DK Rdil mislignment Fig. 9 Axil displcement Angulr mislignment Digrm 1: Blncing the shrink disk hubs

13 ROBA -ES Instlltion Guidelines nd Exmples Instlltion Guidelines Instlltion Due to its optimized construction, the ROBA -ES coupling cn be inserted xilly onto the input or output shfts fter instlltion of the hubs. Subsequent screwing-on nd complicted specilconstruction housing is no longer necessry (see Instlltion Exmple pge 13). Plese Observe!!! The instlltion or instlltion dimensions must be kept to so tht there is no fcing-side pressure on the elstomeric element fter clutch instlltion hs been completed, mening tht the elstomeric element must not be distorted xilly. By keeping to the instlltion dimensions (in prticulr dimension E, see Dimension Figs. nd Dimension Tbles, pges 6 9), the elstomeric element s xil flexibility remins gurnteed. On elstomeric elements with differing numbers of nubs, the side with the lrger number of nubs must be instlled first (for esier instlltion). Due to the pre-tension on the flexible elstomeric element, n xil instlltion force is required when joining the coupling hubs. The xil instlltion force required cn be reduced by lightly gresing the elstomeric element. OBSERVE: Only use grese bsed on minerl oil without dditives. Vseline is lso suitble. Instlltion of the shrink disk hubs (ROBA -ES Type 940._11._) The conicl surfces of the shrink disk hubs re gresed mnufcturer-side with specil grese (should the device be clened, the device must be re-gresed with specil grese). - Push the shrink disk hubs using suitble device into both shft ends, lign them nd tighten the clmping screws lightly up to their limits. - Tighten the clmping screws evenly stepwise nd cross-wise to the specified tightening torque (see pges 8 nd 9) using torque wrench. - For de-instlltion, loosen ll clmping screws by severl thred turns. - The clmping screws locted next to the tpped extrcting holes must be screwed out, nd then screwed into the tpped extrcting holes up to their limits. - Tighten the clmping screws evenly nd crosswise. This forces the shrink disk wy from the conicl shrink disk hub. Sfety Regultions The coupling rottes during opertion. It must be secured customer-side ginst indvertent contct. Instlltion nd mintennce must be crried out by personnel who hve been trined ccordingly. Instlltion Exmples Fig. 10: ROBA -ES with clmping hubs Fig. 12: ROBA -ES with shrink disks Fig. 11: ROBA -ES with keywys 13

14 ROBA -ES Dimensioning ROBA -ES Coupling Dimensioning 1. Approximte clcultion of the coupling torque: 1.1. T N from the nominl cpcity T N = 1.2. Dynmic torques T S nd T W (5.1 nd 5.2): Input-side excittion: J L Lod-side excittion: Impct torque: T S = T AS x x S A Impct torque: T S = T LS x x S J L A + J L J A + J L J L 9550 x P AN/LN n Alternting torque: T W = T AW x x V R Alternting torque: T W = T LW x x V J R A + J L J A + J L J A J A 2. Comprison of torques occurring in the coupling with the permitted torques The coupling must be dimensioned so tht the lods occurring do not exceed the permitted vlues in ny operting condition Lod due to nominl torque T KN T N 2.2. Lod due to torque impcts (5.3) T K mx T S x S Z + T N 2.3. Lod due to resonnce pssing through (5.4) T K mx T S x S Z x V R + T N 2.4. Lod due to constntly lternting torque cycle opertion (5.5 nd 5.6) Permitted lternting torque on coupling: T KW = 0,25 x T KN (for luminium hubs) T KW = 0,35 x T KN (for steel hubs) T KW T W x S f 3. Inspection of permitted mislignments K W K r W r x S n K w W w x S n If more thn one mislignment type occurs t the sme time, plese observe Fig. 8 (pge 12). 4. Frictionl locking inspection on hub connection T R > T mx : T mx is the mximum torque occurring in the coupling. Vlues for T R cn be found on pges 10 nd Explntions 5.1. The torque definition on the coupling is pplicble if the shft coupling in the system is the torsionlly softest element, nd therefore the system cn be considered s double-mss oscilltor. If this is not the cse, the clcultion of the torque on the coupling requires more detiled clcultion procedure The impct fctors S A / S L describe the impct progression. A rectngulr progression of the impct torque is the heviest impct (S A /S L =2,0). A flt sinus progression of the impct torque is light impct (S A /S L =1,2) T S, the pek torque in the coupling, is the mximum torque on the coupling during the impct minus the system torque hving n effect on the coupling during norml opertion T S = T mx. impct - T N 5.4. If drive is operted supercriticlly, mening tht the operting speed n lies bove the resonnce speed n R, then resonnce pssing through cuses prticulr lods If the resonnce psses through quickly below the operting speed, only few resonnce peks occur. The lternting torque in resonnce cn therefore be compred to the mximum torque on the coupling (see lso 5.6) 5.5. S f tkes the frequency dependency of lifetime into ccount. The frequency dependency is first tken into ccount bove 5 Hz On pprecible vibrtion excittion, the resonnce must be moved out of the operting rnge by selecting suitble coupling spring rigidity.

15 ROBA -ES Dimensioning Service fctors for Coupling Dimensioning V R = Resonnce fctor V R ,6 0,8 1,2 1,4 n/n R f/f R Blue: elst. element 80 Sh A Yellow: elst. element 92 Sh A Red: elst. element 98 Sh A Green: elst. element 64 Sh D n R = Resonnce speed 30 n R = J A +J L CT dyn. [rpm] π J A xj L f R = Resonnce frequency f R = 1 J A +J L CT dyn. [Hz] 2π J A xj L S n = Speed fctor S Z = Strt-up fctor/impct frequency 3,5 3 S n S/h S Z 1 1,2 1,4 1,6 1,8 2,5 2 1, n [rpm] S d = Sfety fctor for temperture T [ C] - 30 C / + 30 C + 60 C + 90 C S d 1 1,5 2 S L or S A = Impct fctor S f = Frequency fctor f in H z 5 > 5 S f 1 f 5 Impcts S A or S L Light impcts 1,2 Medium impcts 1,6 Hevy impcts 2,0 f shows the lod lterntion per second (Hz = s -1 ) Terms P AN/LN [kw] Input-side/lod-side cpcity T R [Nm] Trnsmittble torque (frictionl locking, Tbles pges 10,11) T AS/AW [Nm] Excittionl torque input-side T LS/LW [Nm] Excittionl torque lod-side T N [Nm] System torque T W [Nm] System lternting torque T S [Nm] Pek torque T mx [Nm] Mxiumum torque in the coupling T KN [Nm] Permitted nominl torque T Kmx [Nm] Permitted mximum torque T KW [Nm] Permitted permnent lternting torque J A [kgm 2 ] Mss moment of inerti, input-side J L [kgm 2 ] Mss moment of inerti, lod-side K [mm] Permitted xil displcement K r [mm] Permitted rdil mislignment K w [ ] Permitted ngulr mislignment W [mm] Axil shft displcement W r [mm] Rdil shft mislignment W w [ ] Angulr shft mislignment c T [Nm/rd] Spring rigidity n [rpm] Nominl speed n R [rpm] Resonnce speed S A/L [ - ] Impct fctor input-side/lod-side S n [ - ] Speed fctor S Z [ - ] Strt-up fctor/impct frequency S d [ - ] Temperture fctor S f [ - ] Frequency fctor V R [ - ] Resonnce fctor f [1/s]=[Hz] Lod fctor f R [Hz] Resonnce frequency 15

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