Renold Clutches & Couplings - casa sueca s.a.
Renold Clutches & Couplings - casa sueca s.a.
Renold Clutches & Couplings - casa sueca s.a.
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Selection Procedure<br />
●<br />
From the continuous Power (P) and operating Speed (n)<br />
calculate the Application Torque T norm from the formula:<br />
T NORM = Application Torque (Nm)<br />
T MAX = Peak Application Torque (Nm)<br />
T NORM<br />
= 9549 x (P/n) Nm<br />
T KN =<br />
Nominal Coupling Rating according to<br />
DIN 740 (kNm)<br />
● Select Prime Mover Service Factor (Fp) from section 3.0.<br />
● Select Driven Equipment Service Factor (Fm) from<br />
section 4.<br />
● The minimum Service Factor has been set at 1.5.<br />
● Calculate T MAX<br />
from the formula:<br />
(with service factor = 3 according to <strong>Renold</strong> Hi-Tec<br />
<strong>Couplings</strong> standard)<br />
T Kmax = Maximum Coupling Rating according to<br />
DIN 740 (kNm)<br />
P = Continuous Power to be transmitted by<br />
coupling (kW)<br />
n = Speed of coupling application (rpm)<br />
●<br />
●<br />
●<br />
T MAX<br />
=T NORM<br />
(Fp + Fm)<br />
Select Coupling such that T MAX<br />
< T KMAX<br />
Check n < Coupling Maximum Speed (from catalogue data).<br />
Check Coupling Bore Capacity such that dmin < d < dmax.<br />
Fp = Prime Mover Service Factor<br />
Fm = Driven Equipment Service Factor<br />
dmax = Coupling maximum bore (mm)<br />
dmin = Coupling minimum bore (mm)<br />
● Consult the factory for alternatives if catalogue limits are<br />
exceeded.<br />
N.B. If you are within 80% of maximum speed, dynamic<br />
balancing is required.<br />
It is the responsibility of the<br />
system designer to ensure that the<br />
application of the coupling does<br />
not endanger the other constituent<br />
components in the system. Service factors<br />
given are an initial selection guide.<br />
Prime mover service factors<br />
Prime Mover Factors<br />
Fp<br />
Diesel Engine 1 Cylinder *<br />
2 Cylinder *<br />
3 Cylinder 2.5<br />
4 Cylinder 2.0<br />
5 Cylinder 1.8<br />
6 Cylinder 1.7<br />
More than 6 Cylinder 1.5<br />
Vee Engine 1.5<br />
Petrol Engine 1.5<br />
Turbine 0<br />
Electric Motor 0<br />
Induction Motor 0<br />
Synchronous Motor 1.5<br />
Variable Speed*<br />
Synchronous Converter (LCI) - 6 pulse 1.0<br />
- 12 pulse 0.5<br />
PWM/Quasi Square 0.5<br />
Cyclo Converter 0.5<br />
Cascade Recovery (Kramer, Scherbius) 1.5<br />
*<br />
The application of these drive types is highly specialised and it is<br />
recommended that <strong>Renold</strong><br />
Hi-Tec <strong>Couplings</strong> is consulted for further advice.<br />
The final selection should be made by <strong>Renold</strong><br />
Hi-Tec <strong>Couplings</strong>.<br />
For confirmation of coupling selection<br />
complete the check list on page 87<br />
and fax to <strong>Renold</strong> Hi-Tec <strong>Couplings</strong>.<br />
Fax: +44 (0) 1422 255100<br />
RENOLD Hi-Tec <strong>Couplings</strong>. Tel: + 44 (0) 1422 255000 Fax: + 44 (0) 1422 320273 E-Mail: sales@hitec.renold.com<br />
88