Technical specifications
Kendrion INTORQ | BA 14.0217 | 07/2021
34
Friction work
Q [J]
R
Operating frequency S
h
[h ]
-1
100000
10000
1000
100
1
10
100
1000
16
14
12
08
10
06
Fig. 10:
Friction work as a function of the operating frequency for the BFK-458-ATEX, for gas atmospheres, for the
speed 3000 rpm
The following table specifies the permissible speed [rpm], depending on the number of switching opera-
tions, that is typical for facility acceptance tests. (This information differs from the values given in the oper-
ating instructions for the standard spring-applied brake BFK458!)
Notice
The number of switching operations must be evenly distributed over the course of one hour.
Size
Number of switching operations
per hour
Speed [rpm]
800
1500
1800
2500
3000
06
6
2998
2999
2749
2499
2300
10
2967
2975
2724
2472
2287
08
6
6448
4395
4144
3892
2800
10
6142
4327
4066
3804
2795
10
6
10273
5788
5536
5284
3200
10
9447
5657
5398
5140
3196
12
6
11289
7179
6938
6673
3700
10
10457
6983
6795
7855
3692
14
6
12401
8585
8331
8076
4000
10
11812
8408
7855
7855
3988
16
6
14385
9987
9731
9472
4599
10
13702
9817
9521
9213
4572
