SKF CMPT CTU - Page 23

SKF Copperhead Transmitter Unit CMPT CTU 8-23
CMPT CTU Output
Instruction Manual
Velocity Severity
Velocity Range Limits and Machine Classes
mm/s
RMS
in/s
Peak
Small Machines
Class I
Medium Machines
Class II
Large Machines
Rigid Supports
Class III
Less Rigid
Supports Class IV
0,28
0.02
Good
Good
Good
Good
0,45
0.03
0,71
0.04
1,12
0.06
Satisfactory
1,8
0.10
Satisfactory
2,8
0.16
Unsatisfactory
(alert)
Satisfactory
4,5
0.25
Unsatisfactory
(alert)
Satisfactory
7,1
0.40
Unacceptable
(danger)
Unsatisfactory
(alert)
11,2
0.62
Unacceptable
(danger)
Unsatisfactory
(alert)
18
1.00
Unacceptable
(danger)
28
1.56
Unacceptable
(danger)
45
2.51
Table 8-6: ISO 10816-1 Velocity Range Limits
Enveloping
Severity
Shaft Diameter & Speed
gE
peak-to-peak
Diameter between
200 and 500 mm
and Speed < 500
r/min
Diameter between 50 and
300 mm and Speed
between 500 and 1 800
r/min
Diameter between 20 and
150 mm and Speed is either
1 800 or 3 600 r/min
0.1
Good
Good
Good
0.5
Satisfactory
0.75
Satisfactory
1
Unsatisfactory
(alert)
Satisfactory
2
Unacceptable
(danger)
Unsatisfactory
(alert)
Unsatisfactory
(alert)
4
Unacceptable
(danger)
Unacceptable
(danger)
10
Table 8-7: Enveloped Acceleration Limits