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Motori Pneumatici Pneumatic Motors Druckluftmotoren - Sea

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<strong>Motori</strong> pneumatici - <strong>Pneumatic</strong> motors - <strong>Druckluftmotoren</strong><br />

Curve caratteristiche motori reversibili<br />

Performance fi gure for reversible motors<br />

Kennlinien umsteuerbare Motoren<br />

P3R<br />

45<br />

40<br />

35<br />

30<br />

P4R<br />

35<br />

30<br />

25<br />

P6R<br />

P8R<br />

25 20<br />

20<br />

15<br />

P20R<br />

7<br />

6<br />

5<br />

P30R<br />

P40R<br />

PHR<br />

4,5 0,9<br />

5 4 0,8<br />

3,5 0,7<br />

4<br />

3 0,6<br />

Coppia - Torque - Drehmoment [N.m]<br />

Potenza - Power - Leistung [W]<br />

25<br />

20<br />

15<br />

10<br />

5<br />

20<br />

15<br />

10<br />

5<br />

15<br />

10<br />

5<br />

10<br />

5<br />

4<br />

3<br />

2<br />

1<br />

3<br />

2<br />

1<br />

2,5<br />

2<br />

1,5<br />

1<br />

0,5<br />

0,5<br />

0,4<br />

0,3<br />

0,2<br />

0,1<br />

0<br />

0<br />

0<br />

0<br />

0<br />

0<br />

0<br />

0<br />

0 1639 3187 4758 6303 7867 9410 10975 12508 14042 15601 17121 18680 PHR<br />

0 338 658 982 1301 1623 1942 2265 2581 2898 3219 3533 3855<br />

P40R<br />

0 273 531 793 1051 1311 1568 1829 2085 2340 2600 2853 3113<br />

0 201 391 584 774 966 1156 1348 1536 1724 1916 2102 2294<br />

0 70 136 203 268 335 401 467 533 598 664 729 795<br />

0 56 110 164 217 271 324 377 430 483 537 589 642<br />

0 42 81 121 160 199 238 278 317 356 395 434 473<br />

0 34 65 97 129 161 193 225 256 287 319 350 382<br />

P30R<br />

P20R<br />

P8R<br />

P6R<br />

P4R<br />

P3R<br />

Calcolo del carico massimo ammissibile radiale e assiale del motore P(H)<br />

Calculation of the permitted maximum radial and axial load of motor P(H)<br />

Berechnung der zulässigen max. Radial- und Axiallast des <strong>Motors</strong> P(H)<br />

Fr<br />

40<br />

14<br />

P<br />

Fr (N)<br />

1550<br />

Fa<br />

2000<br />

Fa (N)<br />

Cuscinetto 6203: C=9560 N, C 0<br />

=4750 N.<br />

Attraverso le formule indicate per il<br />

dimensionamento dei cuscinetti, si ottiene:<br />

L10=(C/P) 3 , in cui L10 = durata in milioni di giri,<br />

C = coeff. di carico dinamico,<br />

P = carico dinamico equivalente<br />

sul cuscinetto.<br />

Scegliendo pari a 10 milioni il numero di cicli<br />

prima dei quali non si devono avere rotture, si ha:<br />

10=(9560/P) 3 , da cui P=4437 N.<br />

Infi ne: F r<br />

= 1550 N<br />

(sforzo massimo radiale in assenza di<br />

carico assiale)<br />

Per quanto riguarda il massimo sforzo assiale in<br />

assenza di carico radiale, si ha:<br />

F a<br />

= 2000 N<br />

Bearing 6203: C=9560 N, C 0<br />

=4750 N.<br />

Using the formula for dimensioning the bearings,<br />

the result is:<br />

L10=(C/P) 3 , where L10 = duration in millions of<br />

rotations<br />

C = dynamic load coeffi cient<br />

P = equivalent dynamic load<br />

on bearing.<br />

Taking the number of cycles before failure as 10<br />

million, the result is:<br />

10=(9560/P) 3 , where P=4437 N.<br />

Final result: F r<br />

= 1550 N<br />

(maximum radial force in the absence of<br />

axial load).<br />

The maximum axial force in the absence of radial<br />

load is:<br />

F a<br />

= 2000 N<br />

Lager 6203: C=9560 N, C 0<br />

=4750 N.<br />

Anhand der aufgeführten Formeln für die<br />

Dimensionierung der Lager ergibt sich:<br />

L10=(C/P) 3 , dabei ist L10 = Lebensdauer in<br />

Millionen Umdrehungen,<br />

C = dynamische Tragzahl,<br />

P = äquivalente dynamische<br />

Lagerbelastung.<br />

Wird die Bruchlastspielzahl auf 10 Millionen<br />

angesetzt, ergibt sich:<br />

10=(9560/P) 3 , daher P=4437 N.<br />

Schließlich: F r<br />

= 1550 N<br />

(max. Radialbelastung ohne Axiallast)<br />

Was die maximale Axialbelastung ohne Radiallast<br />

angeht, ergibt sich:<br />

F a<br />

= 2000 N<br />

7.22

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