In most practical vibration test applications a head expander is required because the test specimen or the fixture is larger than the armature surface. In these cases a head expander is applied to provide a broader base for mounting the test specimen and fixtures. A head expander is made of lightweight magnesium or less expensive aluminum. Many types of standardized head expanders are available or special customization is also available to meet your requirements. Dongling head expanders are designed with load support which enables larger test specimens to be mounted and tested safely on the shaker and reduces the risk of damage to the shaker suspension system. Head expander design and customization are available for your existing vibration test system as well. Dongling provided head expanders have strict requirements related to frequency, table weight, acceleration, amplitude uniformity and lateral movement and are designed to meet your standards.

• All Dongling head expanders have passed finite element analysis

• Designed to optimize performance on your vibration test system

• High quality manufacturing process to ensure consistent performance with excellent technical indicators

• Options include “square” or “round” shape and “magnesium” or “aluminum” material

• Customized shapes and sizes are also available

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• Table diameter	-150		-230/-240		-320		- 370		-445/-480		-550		-590		-650		-870		-1070
  Model
  HE300S	7	2,000	10	2,000	——		——		——		——		——		——		Weight(AI)(kg)		Sine(AI)(Hz)
  	5	2,000	7	1,800													Weight(Mg)(kg)		Sine(Mg)(Hz)
  HE400S	5	2,000	21	2,000	——		——		——		——		——		——		——		——
  	8.4	1,800	14.7	2,000
  HE500S	20	2,000	32	2,000	32	2,000	35	2,000	——		——		——		——		——		——
  	14	2,000	23	1,800	22.4	2,000	25	2,000
  HE600S	29	1,200	41	1,350	41	2,000	40	2,000	57	2,000	——		——		——		——		——
  	20.3	1,200	28	1,350	28	2,000	28	1,800	40	2,000
  HE700S	——		43	1,000	72	1,000	75	1,800	80	2,000	——		——		——		——		——
  			30.1	900	48	1,000	50	1,800	56	1,800
  HE800S	——		63	1,000	72	1,200	83	1,300	88	1,300	125	1,500	——		——		——		——
  			42	900	68	1,100	60	1,200	60	1,300	87.5	1,500
  HE900S	——		76	500	94	800	101	600	100	1,000	135	1,000	——		——		——		——
  			52.5	500	66	700	67	600	70	1,000	95	1,000
  HE1000S	——		80	400	117	550	120	800	185	1,000	225	900	220	1,000	210	1,200	——		——
  			54.5	400	78	550	85	600	129.5	900	150	900	154	1,000	147	1,200
  HE1100S	——		——		——		185	600	230	500	245	700	250	700	220	700	——		——
  							126	600	161	500	171.5	700	175	700	154	700
  HE1200S	——		176	500	——		191	400	250	500	275	500	280	500	286	450	——		——
  			123	500			140	400	195	500	206	500	196	500	181	450
  HE1500S	——		283	200	345	350	337	450	358	400	415	400	420	400	450	500	——		——
  			198	200	230	350	225	450	245	400	292	400	294	400	315	500
  HE2000S	——		——		——		——		——		900	300	1000	300	910	300	——		——
  											630	300	700	300	610	300
  HE2500S	——		——		——		——		——		——		——		——		2300	300	2400	300
  																	1495	270	1560	270
  HE3000S	——		——		——		——		——		——		——		——		2600	250	——
  																	1690	225
  HE3500S	Weight(AI)(kg)		Sine(AI)(Hz)		——		——		——		——		——		——		3700	200	——
  	Weight(Mg)(kg)		Sine(Mg)(Hz)														2405	180

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• Table diameter	150		-230/-240		320		370		-445/-480		-550		-590		-650		-870		-1070
  Model
  HE300R	7	2,000	9	2,000	——		——		——		——		——		——		Weight(AI)(kg)		Sine(AI)(Hz)
  	5	2,000	6	1,800													Weight(Mg)(kg)		Sine(Mg)(Hz)
  HE400R	12	2,000	14	2,000	16	2,000	——		——		——		——		——		——		——
  	7	2,000	10	2,000	11.2	2,000
  HE500R	20	2,000	23	2,000	32	2,000	32	2,000	——		——		——		——		——		——
  	14	2,000	16.1	2,000	22.4	2,000	22.4	2,000
  HE600R	——		31.5	1,200	33	1,800	39	1,600	38	2,000	——		——		——		——		——
  			22	1,200	23.1	1,800	27	1,600	26.6	1,900
  HE700R	——		33	800	58	1,500	69	2,000	70	2,000	——		——		——		——		——
  			23.1	800	41	1,500	48.3	2,000	49	2,000
  HE800R	——		37	500	64	800	70	1,200	72	1,500	85	1,800	——		——		——		——
  			26	500	45	800	49	1,200	50.4	1,500	59	1,800
  HE900R	——		——		——		85	1,200	100	1,200	——		——		——		——		——
  							59.5	1,200	70	1,200
  HE1000R	——		——		——		——		140	1,000	150	1,100	160	1,100	180	1,100	——		——
  									98	1,000	105	1,100	112	1,100	126	1,100
  HE1100R	——		——		——		——		200	800	210	900	230	1,000	260	1,000	——		——
  									140	800	147	900	161	1,000	182	1,000
  HE1200R	——		——		——		——		250	500	260	600	270	600	290	600	——		——
  									175	500	182	600	189	600	203	600
  HE1500R	——		——		——		——		330	400	350	400	400	400	475	400	——		——
  									231	400	245	400	280	400	333	400
  HE2500R	——		——		——		——		——		——		——		——		2000	400	——
  																	1300	360
  HE4300R	Weight(AI)(kg)		Sine(AI)(Hz)														——		7000	200
  	Weight(Mg)(kg)		Sine(Mg)(Hz)																4550	180
  Note: 1. HE300S means it is square head expander, the effective size of the head expander is 300x300mm HE600R means it is round head expander, the diameter of the head expander is Φ 600 mm 2. Standard pattern: HE300S(HE300R)〜HE500S(HE500R): 50x50mm in grid pattern of the inserts HE600S(HE600R) and above: 100x100mm in grid pattern of the inserts