Kwd M68670630100 Coupling

3
technical features
Table 1
Recommended values for influence factors
temperature factor
Sϑ
numerical values for perbunan Sϑ 1 °C von bis
starting factor
SZ
number of starts per hour
1
1
1,2
-30
+30
+40
+60
+30
+40
+60
+80

number of starts per hour
100
200
400
800
SZ
1,0
1,2
1,4
1,6
over 800 starts per hour please request impact factor
SAor SL
SAor SL slight impacts
1,5
medium impects
1,8
high impacts
2,2
calculation example Coupling ELKU-N searched for steady drive.
Driving machine:
AC motor type 315 L - 200 kW -1 485 rpm, shaft diameter 80 mm
TAN = 9 550 •
PAN 200 = 9 550 • = 1 287 Nm nAN 1 485
quantity Z = 40 per hour - ambient temperature ϑ = +40 °C starting torque TAS ≈ 2TAN = 2 574 Nm
TAN :
installation torque [Nm]
TKN :
coupling torque [Nm]
TLN :
load torque [Nm]
TKmax: max. coupling torque [Nm]
PAN :
power [kW]
nAN :
input speed [rpm]
Z:
starting frequency
ϑ:
ambient temperature [°C]
Working machine:
centrifugal pump with a relatively low mass inertia average load torque TLN= 1 150 Nm
impact of the rated torque
TKN ≥ TLN • Sϑ= 1 150 Nm • 1 = 1 150 Nm according to the rated torque is the ELKU-N coupling size 250 in
question for TKN= 2 500 Nm and TKmax= 5 000 Nm.
Check for TKmax factors:
starting factor:
temperature factor:
impact factor:
SZ= 1 Sϑ= 1 SA= 1,5
TKmax ≥ TAS • SZ • Sϑ • SA = 2574 Nm • 1 • 1 • 1,5 = 3 861 Nm This example showes a coupling selection by a simplified calculation. For a professional coupling selection and sizing our technical
staff is available for the customer.
1) 2)
3) 4)
finished bore to ISO-fit H7, keyway to DIN 6885 sheet 1, fit JS 9 without keyway, pilot bore - untoleranced dimension, „average“ to
DIN ISO 2768 see page 14 see page 14 „type of hub bore“