Head Expander

  • Head Expander Square Head Expander
  • Head Expander Round Head Expander
  • Head Expander Installation Examples
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The head expander supplied by our company has various types, and it can be specially customized to meet the requirements of customers for expanding the vibration shaker.

In actual vibration test, specimen or fixture is commonly larger than the electro-dynamic shaker armature table. As a result, the original table needs to be extended by installing an auxiliary table.

The extended table has stringent requirements for the working frequency, table weight, table acceleration, amplitude uniformity, and the lateral movement, etc.

The VT series product undergoes finite element modal analysis. Its quality is guaranteed with superior structure, materials, and workmanship.

Advantages
  • All shake system expanders supplied by DONGLING have passed the finite element analysis. Their structure has been optimized.
  • High-quality workmanship guarantees stable performance and reliable technical indicators.
  • The standard-series head expander is optional. Its shape can be round or square. Its raw material can be aluminum or magnesium.
  • Head Expander Square Head Expander
  • Head Expander Round Head Expander
  • Head Expander Installation Examples
Square Type
Table Diameter Model -150 -200 -230
-240 		-320 -370 -445/480 -550 -590
VT0303 7
2000 		8
2000 		10
2000 		　 　 　 Effective Mass (kg)
Upper Limit Frequency (Hz)
VT0404 12
2000 		13
2000 		21
2000 		　 　 　 　 　
VT0505 20
2000 		23
2000 		32
2000 		32
2000 		33
2000 		　 　 　
VT0606 29
1200 		37
1500 		38
1500 		40
2000 		40
2000 		53
2000 		　 　
VT0707 　 　 43
1000 		60
2000 		80
2000 		80
2000 		　 　
VT0808 　 　 60
1000 		70
1200 		80
1300 		85
1300 		125
1800 		135
1800
VT0909 　 　 80
7 00 		95
1000 		95
1000 		100
1000 		120
1000 		120
1000
VT1010 　 　 73
400 		100
600 		110
800 		185
1000 		200
1000 		210
12 00
VT1111 　 　 　 　 　 230
500 		245
700 		160
700
VT1212 Effective Mass (kg)
Upper Limit Frequency (Hz) 		　 　 　 250
400 		265
500 		280
500
VT1515 　 　 　 　 　 350
400 		400
400 		420
400
VT2020 　 　 　 　 　 　 900
300 		1000
300
Round Type
Table Diameter Model -150 -200 -230
-240 		-320 -370 -445/480 -550 -590
VT300 7
2000 		8
2000 		　 　 　 　 Effective Mass (kg)
Upper Limit Frequency (Hz)
VT400 10
2000 		12
2000 		14
2000 		16
2000 		　 　 　 　
VT500 20
2000 		21
2000 		23
2000 		30
2000 		32
2000 		　 　 　
VT600 　 20
1000 		30
1 800 		33
1800 		38
1800 		38
2000 		　 　
VT700 　 　 33
800 		58
1500 		69
2000 		70
2000 		　 　
VT800 　 　 　 60
800 		70
1200 		72
1500 		　 　
VT900 　 　 　 　 85
1200 		100
1200 		　 　
VT1000 　 　 　 　 　 140
1000 		150
1100 		160
1100
VT1100 　 　 　 　 　 200
800 		210
900 		230
1000
VT1200 Effective Mass (kg)
Upper Limit Frequency (Hz) 		　 　 　 250
500 		260
600 		270
600
VT1500 　 　 　 　 　 330
400 		350
400 		400
400

Remark
1. The above-mentioned effective mass and usable frequency range indicate the specification of aluminum head expander. For magnesium type, the effective mass will be reduced to 65%, and the usable frequency will be reduced to 90% of the same model of aluminum type.

2. VT0303 is referred to a square head expander with its table size of 300×300mm. VT300 represents a round type product with its table diameter of 300mm.

3. Standard Hole
1) VT0303 (VT300)~VT0505 (VT500): 50×50mm square hole
2) VT0606 (VT600)~VT1212 (VT1200) and above: 100×100mm square hole

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