|
|
The graph shows the transmitted outputs
"N" or torques "M" of universal joints as defined in DIN 808-NB (single,
needle bearing), depending on the speed "n."
This information is applicable for uniform speed, uniform load and
a maximum working angle of 10°.
Where the working angles ß are larger, an assumed reference output
"N" or an assumed torque "M" increased by correction factor "k" must
be used (see example below).
Conversion formulas:
Torque M [Nm] = 9550 N [kW] n
[rpm]
Output N [kW]= M [Nm] x n [rpm]
1 kW = 1.36 hp 1 hp = 0.736 kW
Example 1
Transmitted output N= 5.5 kW
Speed n= 2300 rpm
Working angle ß= 10°
Correction factor k= 1
Reference output N =
Rated Output N
Intersection "P" is derived from 5.5 kW and 2300 rpm (corresponding
to a torque of 23 Nm).
The next larger joint corres-
ponding to Point P is d1 = 28
Example 2
Transmitted torque M = 23 Nm
Speed n= 2300 rpm
Working angle ß= 18°
Correction factor k= 1.43
Reference torque
M = 1.43 x 23 Nm = 33 Nm
Intersection P1 is derived from 33 Nm and 2300 rpm (corresponding
to a reference output N = 8.3 kW).
The next larger joint corres-
ponding to Point P1 is d1 = 32
|
|
