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Dynamic Balancing Machine [ Model - HDM ]

 
Dynamic Balancing Machine HDM
Machines Model HDM are horizontal type universal hard bearing balancing machines provided with Microprocessor based measuring panel HDM-8500 for balancing different shapes of rotors like rotors of Electronic machines, crankshafts, cylinders, gas compressors, flywheels, turbine rotors, rotors of centrifugal pumps and any other type of rotors of rotating machines.
   
Dynamic Balancing Machine features a very simple operation. The working cycle is fully automatic. From safety point of view a double press push button starts machine, measures and stores, the unbalance values on DPMs for two planes simultaneously and stop machine ( with brake if machine is provided with Electronic breaking facility.) The measuring cycle general is less than 10 seconds for normal rotors which can be accelerated within 5 seconds.
   
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To have smooth and gradual acceleration models HDM - 3,000/- 7,000/- 10,000/- 20,000/- are provided with slipring motors in order not to have damage to drive couplings as well other rotating parts in drive systems like gears etc. The starting of these machines is done manually by cutting resistances of starter in 4 to 5 steps.
 
key-board facility provided on measuring panel for correct data feeding of rotor with 1 digit accuracy for itsdimensions like A, B, C, R1 & R2. Tolerance limits of both correction plans i.e. tl1 and tl2 can be fed, so that when rotor is balanced within the limits respective LEDs glow up, indicating no further correction necessary. For other details please refer 'Features of Measuring panel HDM-8500'.
 
The usable length of machine is established according to the longest roter to be balanced.
Extension beds can be supplied on request, which can be dded to standard bed of machine. It is also possible to install an additional bed ( Gap bed ) with a pit between this bed and standard bed of machine in order to balance rotors having its outside diameter exceeding swing over standard bed. Models HD-7,000- 10,000/ 20,000 are provided with fixed separate drives and hence gap-bed design is not possible.
   
Standard Features
 
Digital display for unbalance indication
 
Amount and angle of unbalance for both planes displayed on separate DPMs. Hence linear accuracy is very goos as compared to analog meter + /- 1 digit for amount and +/-1 degree for angle.
 
Digital display for RPM indication
 
A DPM is provided to indicate balancing speed continuously as a standard feature.
 
Auto Stop
 
No necessity to stop machine once started. It stops automatically after stabilization of unbalance results.
 
Simultaneous Indication
 
Amount and angle of unbalance in both planes displayed simultaneously and remains displayed (stored ) till next run. This totally eliminates operation of plane selector and reduces additional time for stabilization of readings in other plane.
 
Key-Board
 
Data of rotor dimensions and balancing tolerance i.e. values of A,B,C,R1,R2, t11,t12 are fed by key operation . Hence accuracy of data feeding is accurate up to 1 digit.
 
Tolerance Indicators
 
Separate LEDs are provided for both planes which glow when unbalance is reduced within balancing tolerance.
 
Auto Range
 
Depending upon whether unbalance amount is more or less a respective course or fine range gets automatically selected till rotor gets balanced within tolerance limits, Multiplier operation is totally eliminated
 
Data store
 
Data of various rotors can be stored against respective rotor type nos. Hence no need of measuring of rotor dimensions or rotor data feeding when repeat balancing operation required. Just call rotor type no. and machine is ready for balancing.
 
Self Check
   
  Panel is provided with ‘self-check’ mode which checks proper functioning of digital displays, LEDs is cyclic operation. This helps immediate fault detection.
   
   
HDM-8500
   
  This is a microproceser based measuring panel suitable for FIE Hard Bearing Balancing Machine
 
Technical Specifications
   
  "FIE" Horizontal Type Universal Hard Bearing Balancing Machines
   
 
Models
Unit
HDM-10
HDM-30
HDM-50
HDM-100
HDM-300
HDM-650
HDM-1000
HDM-3000
HDM-7000
HDM-10000
HDM-20000
Weight of rotor
kg
0.5-10
1-30
2-50
3-100
10-300
20-650
10-1,000
30-3,000
70-7,000
100-10,000
200-20,000
Max. weight on each pedestal
kg
7.5
22.5
30
75
180
480
600
1,800
5,250
6,000
12,000
Max. diameter of rotor over bed
kg
600
600
600
1,000
1,000
1,200
1,600
2000
2400
2400
3000
Max. Distance measured from coupling end to extreme bearing center. 
mm
480
480
1,100
1,350
1350
1650
1,650
2,400
3,300
3,300
3,200
Min. Distance between Roller bearing of pedestals
mm
75
75
75
90
110
300
350
500
560
560
660
Rotor journal dia
mm
5-50
5-20
5-20
15-80
20-120
20-120
25-140
35-200
55-300
55-300
70-300
Balancing speed (n)
RPM
1,000
700
700
600
500
350
300-600
250-500
200-400
200-400
200-400
Power of drive motor
HP
0.33
0.75
0.75
0.15
3
5
7.5
20
Slipring
30
Slipring
40
Slipring
60
Slipring
Acceleration Capability (GD2N2)
kgm2n2
0.29x106
0.37x106
0.37x106
0.88x106
3.9x106
8.56x106
14.12x106
168x106
168x106
216x106
301x106
Minimum unbalance mass measured
g
0.01
0.1
0.1
0.1
0.1
0.1
0.1
1
1
1
1
Maximum unbalance mass measured
kg
4
4
4
4
4
4
4
40
40
40
40
Unbalance reduction ratio
%
95
95
95
95
95
95
95
95
95
95
95
Minimum achievable unbalance per Rotor Weight (for max. weight or rotor)
gmm/kg
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.

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