Machinery Fault Rotor Dynamics Simulator (MFS-RDS)

Features
Features
   •   Rotor shaft specially designed for fluid film bearing rotor dynamics simulation
   •   Different bearing clearance selection and controllable lubrication oil pressure for rotor dynamics study
   •   Convenient installation of proximity probes
   •   Rigid, slippage-free operation
   •   Split bracket bearing housing for easy rotor assembly interchanges
   •   Specialized bearings and rotors with split collar ends for easy replacement and installation
   •   Rotor shaft slides without removing mounted components for easy changes
   •   Couplings, rotors, bearings, and shaft can be changed without removing bearing housings
   •   Convenient alignment with jackscrew

Numerous Experiment Possibilities
- • The MFS-RDS fitted with a resonance kit is the perfect tool to gain practical experience in rotating machinery resonance and learn resonance mitigation methods.
- • With different number of rotor disks installed at various locations on the main shaft, resonances up to the third mode can be excited. The bode plot of the main shaft vibration during a coast down test is illustrated in the right figure. Three resonances can be identified clearly.
- • Oil whirl and whip are important instability phenomena associated with rotors supported fluid film bearings. With proper selection of the bearing load (the number of rotor disk), bearing clearance (the selection of bearing cartridge) and oil pressure (adjusting the oil supply valve), the oil whirl and whip can be simulated using the MFS-RDS. The waterfall plot on the right illustrates the oil whirl and whip observed on this simulator. The first critical speed of the main shaft (1X), oil whirl and oil whip are all identified in this waterfall plot. In order to observe oil whirl and whip, the simulator must be running at more than twice of the first critical speed of the main rotor shaft.
- • One key concept in rotor dynamics is the heavy and high spots. With the MFS-RDS and the optional kits supplied by Spectra Quest, the phase relationship between these two spots can be demonstrated.

Specifications

Electrical
Motor	3 Phase, 1/2 HP motor, pre-wired self-aligning mounting system for easy installation/removal
Drive	1/2 HP variable frequency AC drive with multi-featured front panel programmable controller
RPM Range	0 to 6000 rpm (short duration) variable speed
Tachometer	Built-in tachometer with LCD display and one pulse per revolution analog TTL output for DAQ purposes
Voltage	115/230 VAC, Single phase, 60/50 Hz

Mechanical
Shaft Diameter	1/2″ diameter; Turned, Ground, & Polished (TGP) steel
Rotor Base	30″ long, completely movable using jack bolts for easy horizontal misalignment and standard shims for vertical misalignment. Pinned for easy realignment.
Bearing	Two full fluid film bearings with multiple oil inlet prots, provisions to mount proximity probes at any angle. Bearing mounts can be mounted in nine different position for variable rotor span
Oil Distribution System	Pump, pressure gage, stainless steel oil tank, back flow safety switch, pressure interlock gauge.
Rotors	Two 6″ aluminum with 36 threaded holes at 10 degree intervals for introducing unbalance
Safety Cover	Lockable clear, impact resistant hinged plastic cover with motor interlock switch to shut down motor when cover is raised
Foundation	1/2″ die cast aluminum base, base stiffener and eight rubber isolators

Physical
Weight	Approximately 140 lb
Dimensions	L=50″ (125cm), W=14″ (36cm) , H=23″ (58cm)

Basic MFS-RDS

Basic Machinery Fault & Rotor Dynamics Simulator System includes:

   •   1/2 HP variable frequency AC drive with multi-featured front panel programmable controller
   •   3 Phase, 1/2 HP motor, pre-wired self-aligning mounting system for easy installation/removal
   •   Built-in tachometer with LCD display and one pulse per revolution analog TTL output for DAQ purposes
   •   Pressurized fluid film bearings with features to change bearing clearance, length, and type.
   •   Includes two full sleeve bearings with multiple oil inlet prots, tapped holes for mounting two proximity probes at 90 degrees, ability to rotate probe at any angle.
   •   Oil distribution and pressure adjustment system including of pump, pressure gage, stainless steel oil tank, back flow safety switch, pressure interlock gauge.
   •   Bearing inserts with 0.002″ clearance
   •   Extended 30″ rotor base to allow for rotor dynamics experiments up to three critical speeds and whirl/whip phenomena investigation, and five bearing mounting positions for shaft span reconfiguration
   •   Vibration isolators mounts and base stiffener
   •   Three steel disks with one row of holes
   •   Alignment system with calibrated reference dials and jack bolts
   •   One 1/2″ TGP straight steel shaft
   •   Impact resistant clear safety cover with safety interlock
   •   Balance weight kit
   •   Allen wrench set
   •   24V Power supply
   •   Cover support
   •   Comprehensive operations manual

Packages

High Value Combination Packages
The MFS-RDS provides a basic setup for performing rotor whirl/whip experiments and learning vibration signatures of different machine malfunctions. However, a detailed investigation of particular and more advance vibration phenomena will require additional attachments and fixtures which are available through optional kits. Depending on the package selected, you get a 6% to 8% discount over separately purchased items.

Package # 1 :
Basic MFS-RDS+ Kits for in-depth studies of rotor whirl/whip phenomena with 1/2″ and 3/4″ diameter shafts
Package # 2 :
Basic MFS-RDS+ Kits for in-depth studies of oil whirl/whip, alignment, balancing and resonance up to third critical frequency issues
Package # 3 :
Basic MFS-RDS+ Kits for in-depth studies of oil whirl/whip, alignment, balancing, resonance, and bearing defect issues
Package # 4 :
Basic MFS-RDS+ Kits for in-depth studies of oil whirl/whip, alignment, balancing, resonance, bearing defect, shaft crack, fan vibrations, mechanical rub and damping issues
Package # 5F :
Basic MFS-RDS+ Kits for in-depth studies of oil whirl/whip, alignment, balancing, resonance, bearing defect, shaft crack, fan vibrations, mechanical rub, damping issues; plus PC operation, shaft alignment kit and force measurement of both bearings

Option Kits		PKG1	PKG2	PKG3	PKG4	PKG5F
Training Curriculum Manual	SQI-TRCM	X	X	X	X	X
Oil whirl/whip in-depth study kit for 1/2″ shaft	MR-OWSK-1/2	X	X	X	X	X
3/4″ Shaft Conversion Kit	MR-SCK-3/4	X	X	X	X	X
Oil whirl/whip in-depth study kit for 3/4″ shaft (Requires MR-SCK-3/4 and MR-OWSK-1/2)	MR-OWSK-3/4	X	X	X	X	X
Eccentric Rotor (Requires MR-SCK-3/4)	M-ER-3/4		X	X	X	X
Cocked Rotor (Requires MR-SCK-3/4)	M-CR-3/4		X	X	X	X
Coupling Type Set (Requires MR-SCK-3/4)	M-CK-3/4		X	X	X	X
Centrally Bent Rotor Shaft for Balance Studies (Requires MR-SCK-3/4)	M-BRS-3/4		X	X	X	X
Coupling-end bent rotor shaft for alignment studies (Requires MR-SCK -3/4)	M-CBRS-3/4		X	X	X	X
Rolling bearing resonance study kit	MR-RSK-1/2		X	X	X	X
Higher Resonance Study Kit	M-RDK-1/2		X	X	X	X
Sleeve Bearing Resonance Study Kit	M-SBK-1/2			X	X	X
Cocked Bearing Housing	M-CBM-3/4			X	X	X
3/4″ Shaft Sleeve Bearing (grease lubricated) kit	M-SBK-3/4			X	X	X
3/4″ Bearing Fault Kit (Requires MR-SCK -3/4)	M-BFK-3/4			X	X	X
3/4″ shaft bearing loader (Requires MR-SCK -3/4)	M-BL-3/4			X	X	X
1″ Shaft Bearing Study Kit	MR-BSK-1			X	X	X
1″ shaft bearing fault kit (Requires MR-BSK-1)	M-BFK-1			X	X	X
1″ shaft Bearing Loader (Requires MR-BSK-1)	M-BL-1			X	X	X
Mechanical Rub Kit	M-MRK				X	X
Damped Bearing Housing Kit (Requires MR-SCK -3/4)	M-DBHK-1/2				X	X
Crack Shaft Study Kit (Requires MR-SCK -3/4)	MR-CSRK-3/4				X	X
PC Motor Control Kit	M-PCK					X
Fan Vibration Kit	M-FVK-3/4				X	X
Shaft Alignment Kit	M-ATK					X
Vertical and Horizontal Bearing Force Transducer for 1/2″ to 1″ Shafts	M-FTVH					X

Machinery Fault & Rotor Dynamics Simulator (MFS-RDS)

Description:

Features

Specifications

Basic MFS-RDS

Packages