Balmac 205ce - Vibration Severity Analysis; Vibration Warning Levels; Machinery Classification

Page 4 Model 205ce and 205Mce Operation Manual
SECTION 5 - VIBRATION SEVERITY
The following vibration charts are recommended for determining machinery condition based on readings
taken with the Balmac Model 205 ce Vibration Meter:
VIBRATION WARNING LEVELS
The vibration levels listed below may be used as a guide for selecting and setting the limits on Vibration Transmitters and Vibration
Switches. The limits are intended to serve as a guide for machines of similar types, when measured in accordance with the
standard procedures for evaluating vibration. In some cases, requirements may be more or less stringent, or may not apply.
Reference ISO and ANSI standards.
VIBRATION VELOCITY CLASS OF MACHINERY
Vibration (ips) Class-1 Class-2 Class-3 Class-4
0.01 ips GOOD GOOD GOOD GOOD
0.02 ips GOOD GOOD GOOD GOOD
0.03 ips GOOD GOOD GOOD GOOD
0.06 ips FAIR GOOD GOOD GOOD
0.08 ips FAIR FAIR GOOD GOOD
0.1 ips
ROUGH
FAIR FAIR GOOD
0.2 ips N/A
ROUGH
FAIR FAIR
0.4 ips N/A N/A
ROUGH
FAIR
0.6 ips N/A N/A N/A
ROUGH
0.8 ips N/A N/A N/A N/A
1.0 ips N/A N/A N/A N/A
Class-1: Individual components, integrally connected with the complete machine in its normal operating condition.
Small Electric Motors, Precision Machines, Turbines
Class-2: Medium size machinery without special foundations, rigidly mounted engines, or machines on special foundations.
Gear Boxes, Pumps, M-G Sets, Fans
Class-3: Large prime movers mounted on heavy, rigid foundations.
Compressors, Blowers, Hammer mills, Engines
Class-4: Large prime movers mounted on relatively soft, light-weight structures.
Crushers, Reciprocating Machinery, Vibrating Conveyors