Балансировочные машины SCHENCK серии Smart Balancer - страница 4

Предыдущая страница Следующая страница

Навигация

Detection of machine resonances: The bump test:
The guarantee of accurate balancing Take sources of danger out of the game at an early stage
Resonances in the system can be determined by theWith the bump test, you determine the natural frequencies
measurement and graphic display of the amplitude andof a structure. With a rotating machine, you determine the
phase angle of the rotational vibrations as a function ofspeed ranges in which vibrations are amplified dispropor-
the speed. This ensures dedicated balancing outside ma-tionately by resonance.

chine resonances.

mm/s inch/s DIN ISO 10816:

11,000,43Mechanical vibrations –
D7,100,28assessment of the vibra-
4,500,18tions of machine through
C3,500,14measurements on no
2,800,11rotating parts
B2,300,09Vibration velocity (rms)
1,400,0610-1000 Hz, n > 600 min-1
A0,710,032-1000 Hz, n > 120 min-1
rigidflexible rigidflexible rigidflexible rigidflexible Foundation
Pumps radial, axial, mixed flowmed. sized mach.large machines
P > 15 kW15 kW < P <_ 300 kW300 kW < P < 50 MW
integrated driverexternal driverMotorsMotorsMachine type
160 <_ H < 315 mm315 mm <_ H
Group 4Group 3Group 2Group 1Group

A = new machine condition; B = unlimited long-term operation allowable; C = short-term operation allowable; D = Vibration causes damage