ISO 2372 (10816) Standards provide guidance for evaluating vibration severity in machines operating in the 10 to 200Hz (600 to 12,000 RPM) frequency range. Examples of these types of machines are small, direct-coupled, electric motors and pumps, production motors, medium motors, generators, steam and gas turbines, turbo-compressors, turbo-pumps and fans.
Some of these machines can be coupled rigidly or flexibly, or connected though gears. Garena Hack Shell Download. The axis of the rotating shaft may be horizontal, vertical or inclined at any angle. Use the chart below combined with additional factors described in this manual to judge the overall vibration severity of your equipment.
RMS Overall velocity Level Measured in 1000 Hz Bandwidth Vibration Severity Criteria Mm/s In/s Class I Class II Class III Class IV 0.28 0.01 Good Good Good Good 0.45 0.02 0.71 0.03 1.12 0.04 Satisfactory 1.8 0.07 Satisfactory 2.8 0.11 Unsatisfactory Satisfactory 4.5 0.18 Unsatisfactory Satisfactory 7.1 0.28 Unacceptable Unsatisfactory 11.2 0.44 Unacceptable Unsatisfactory 18 0.71 Unacceptable 28 1.10 Unacceptable 45 1.77 Class I. Small-sized machines (powered from 0 to 15 KW) Class II. Medium-sized machines (powered from 15 to 75 KW) Class III. Large-sized machines (powered >75 KW) mounted on 'Rigid Support' structures and foundations Class IV. Large-sized machines (powered >75 KW) mounted on 'Flexible Support' structures Note: Support is determined as rigid support if the fundamental frequency of the machine installed on the support is higher than the machine main excitation frequency Support is determined as flexible support if the fundamental frequency of the machine installed on the support is lower than the machine main excitation frequency Table 2-Vibration Severity Criteria Recommended for Slow Speed Large Machinery Turning from 600 to 1200 RPM (Based on ISO IS 3945). Motor Grade RPM RMS Velocity amplitude for the following shaft heights, in mm 80.
Creative Ct4750 Sound Card Driver For Windows 7 more. ISO 2372 (10816) Standards provide guidance for evaluating vibration severity in machines operating in the 10 to 200 Hz (600 to 12,000 RPM) frequency range. Part 2 – Absolute, General Standards. Blake Chart (Casing Measurements) 6) ISO 10816-1 Standard. Vibration standard is.