Rotor Turning Units - BHS Getriebe GmbH
Rotor Turning Units - BHS Getriebe GmbH
Rotor Turning Units - BHS Getriebe GmbH
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Formula Designations:<br />
d OS [mm] Swiveling pinion pitch diameter<br />
(RDV 1 - 5, table 1)<br />
d OW [mm] External gear rim pitch diameter<br />
(RDV 1 - 5, diagram 3)<br />
J [kgm 2] Mass moment of inertia<br />
of the shait train (m 2)<br />
M S [Nm] Break-away torque at the swiveling<br />
pinion (RDV 1 - 5, diagram 2)<br />
M TL [Nm] Break-away torque required at the shaft<br />
Attention: For shaft trains with hydrostatic<br />
bearings use double the values of M TL<br />
obtained from diagram 1 or diagram 2<br />
N [1] Acceleration factor<br />
n S [rpm] Swiveling pinion shaft speed<br />
(RDV 1 - 5, diagram 2)<br />
n T [rpm] <strong>Turning</strong> speed of the shaft train<br />
P [kW] ElectricaI power<br />
t [sec] AcceIeration time<br />
Once the suitable turning unit has been selected, the<br />
application must be analyzed to determine whether the<br />
shaft train can be accelerated to the turning speed without<br />
overheating the motor:<br />
t=0,12 • (J/M TL) • (n T/N+30/N 4 )<br />
MTL resp. MS (existing for P)<br />
N =<br />
MTL resp. MS (required)<br />
approximate vaIue: t _< 12 sec.<br />
6
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