Bonfiglioli 300 NEMA - DS TECH

(450) 655-7447
info@pt-dstech.com
www.dstech.ca
1275 Newton, local 15
Boucherville, Qc,
Canada, J4B 5H2
c 1 ) output shaft
- for loads applying at shaft mid-point, check that the following condition is verified:
R n2 R c2 f L
(11)
where « R n2 » is the permitted overhung load, as listed in the rating charts.
- Should the force be acting off the shaft midpoint - with the exception of version FZ - establish
the offset value « x » and find the adjusting factor « f x2 » in the relevant diagram (following the
pages showing the installation drawing of gearbox under study).
The following condition must be verified:
R x2 R n2 f x2 R c2 f L
(12)
Look up the diagram relevant to the gearbox under study and identify permitted radial load «
R x2 » corresponding to distance « x » and the ratio A n2 /R n2 nearest to value A c2 /R c2 .
Make sure the following condition is verified:
R x2 R c2
(13)
(A8)
For different speed, or lifetime expectancy, consider:
- a speed factor « f n2 », see table below for reference:
n 2 [rpm] 1 2.5 5 10 15 25 50 100
f n2 2.0 1.51 1.23 1.00 0.88 0.76 0.62 0.50
- a lifetime factor « f L », from table (A7).
The following condition must be verified:
R n2 f n2 R c2 f L
(14)
c 2 ) input shaft
For the resulting force « R c1 » calculated through formula (10), determine the distance the force
applies from shaft shoulder « x ». From the radial load diagram relevant to the specific unit locate
the permitted overhung load « R n1 » corresponding to the actual «x»distance.
The following condition must be verified:
R n1 R c1
(15)
Values listed in the diagram apply for:
- drive speed n 1 = 1000 rpm
- 5000 hrs theoretical lifetime
16