The slewing bearing for the boom system is made by ROTHE ERDE Company from Germany or Larry Olisa Company from Italy. The 42CrMo texture of the slewing bearing ensures its higher strength and longer service life..
  Designed on the basis of accurate data from finite element analysis and dynamics simulation analysis, the boom system has a scientific structure and excellent performance. Besides, stress and strain tests are conducted by the national test center to verify the agreement between the calculation and analysis result of the boom structure and its actual working condition. The design of HONGDA Pump Truck adopts an international purchase strategy, and all its key components are world-famous brands which have the following features:
  l         The big-diameter conveying cylinder has a strong suction ability and can afford large pumping flow.

l         The HBC wireless remote-control unit imported with original German packaging is light in weight and easy to carry. The operator can put the distributing boom in place simply by operating the handle bars.

l         The pumping capacity can be regulated through the stepless control device.

l         The stretching speed of the distributing boom can be regulated through the quick-and-slow stepless control device.

  l         The slewing speed of the boom can be regulated through the stepless control device.

l         It is equipped with the emergency brake device and the automatic speed-control device for the diesel engine to reduce oil consumption.

l         Equipped with the STEIBEL transfer case and the REXROTH pump unit imported with original German packaging;

l         Equipped with slewing reducers and motors imported with original packaging;

l         Equipped with HAWE proportional multi-way valves imported with original German packaging;

l         Equipped with originally-imported REXROTH valves and valves made by Italian oil-control companies;

l         It is equipped with an electric cabinet with totally-imported components; control modules like PLC are all products from the German company SIEMENS.

II. Features of the Hydraulic System: 
l         The closed free fluid power system formed by double pump confluence has the features of large output, small depreciation and smooth commutation with no impact.

l         The intelligent control system makes the driving oil flow incessantly and directly into the driving oil cylinder without any loss.

l         As there are no fussy middle commutation control valves, the commutation impact is reduced and excessively high oil temperature is avoided. Meanwhile, it makes maintenance easier.

l         Compared with the open system with a large oil tank, the closed system needs a small oil tank. The oil in the tank flows gently, which reduces the chance of emulsification.

l         The unique buffering technology can lower the system's high-pressure peak value. Even at the time of high output, the distributing boom vibrates little and the tail pipe remains stable.

l         The concrete output can be regulated through the electronic proportional variable adjustment according to your actual needs.

Name		Unit	Parameters
			HDT5281THB-37/4	HDT5291THB-37/4	HDT5281THB-39/4	HDT5291THB-39/4
Main Technical Parameters In Service	Output in theory	m3/h	125	125	125	125
	Pumping capacity index	Mpa.m3/h	586	586	586	586
	Max. pumping pressure	Mpa	8.5	8.5	8.5	8.5
	Hopper capacity	L	700	700	700	700
	Feeding height	mm	1370	1370	1370	1370
	Model of distributing valve		S-pipe valve	S-pipe valve	S-pipe valve	S-pipe valve
	Max. distributing radius	m	32.6	32.6	34.7	34.7
	Max. distributing height	m	36.6	36.6	38.7	38.7
	Max. distributing depth	m	25.5	25.5	27	27
	Height of boom when stretched	mm	8450	8450	8830	8830
	Distance between front landing legs	mm	7058	7058	6800	6800
	Distance between rear landing legs	mm	6848	6848	7000	7000
	Distance between front & rear landing legs	mm	6790	6790	7432	7432
	Diameter of delivery pipe	mm	125	125	125	125
	Length of tail pipe	m	4	4	4	4
	Rotary angle of boom		370°	365°	365°	365°
	Number of boom sections		4	4	4	4
	Rotary angle of each boom section	°	92/180/180/270	92/180/180/270	91/180/180/180/270	91/180/180/180/270
	Close-control distance	m	33	33	33	33
	Remote-control distance	m	200	200	200	200
Main Technical Parameters in Driving Condition	Max. traveling speed	km/h	85	90	85	90
	Min. turning radius	mm	8800	8800	8800	8800
	Brake distance	m	7	7	7	7
	Approach angle	°	16	16	16	16
	Departure angle	°	11	11	11	11
	Chassis model		JAPAN ISUZU CYZ51Q	CHINA  HOWO ZZ5307N4647C	JAPAN ISUZU CYZ51Q	CHINA  HOWO ZZ5307N4647C
	Wheel base between the first & the second axle	mm	4595	4600	4595	4600
	Wheel base between the second & the third axle	mm	1310	1350	1310	1350
	Front tread	mm	2065	2022	2065	2022
	Rear tread	mm	1850	1830	1850	1830
	Max. engine power	kw	265(1800r/min)	247(2200r/min)	265(1800r/min)	247(2200r/min)
	Max. engine torque	n.m	1422(1100r/min)	1350(1100-1600r/min)	1422(1100r/min)	1350(1100-1600r/min)
	Max. grade ability	%	37	35	37	35
	Fuel consumption	L/100km	36.6	34	36.6	34
	Overall dimension(L×W×H)	mm	12000×2490×3800	12000×2490×3850	12500×2490×3950	12500×2490×3950
	Total weight	kg	28000	29000	280z e 00	29500

,

Name		Parameters
		Unit	HDT5340THB-42/4	HDT5350THB-42/4		HDT5380THB-45/5	HDT5401THB-45/5
Main Technical Parameters In Service	Output in theory	m3/h	125	125		125	125
	Pumping capacity index	Mpa.m3/h	586	586		586	586
	Max. pumping pressure	Mpa	8.5	8.5		8.5	8.5
	Hopper capacity	L	700	700		700	700
	Feeding height	mm	1400	1400		1400	1400
	Model of distributing valve		S-pipe valve	S-pipe valve		S-pipe valve	S-pipe valve
	Max. distributing radius	m	38	38		40.7	40.7
	Max. distributing height	m	41.8	41.8		44.7	44.7
	Max. distributing depth	m	29	29		31.3	31.3
	Height of boom when stretched	mm	8600	8600		8495	8495
	Distance between front landing legs	mm	8820	8820		9550	9550
	Distance between rear landing legs	mm	8500	8500		9550	9550
	Distance between front & rear landing legs	mm	8490	8490		9190	9190
	Diameter of delivery pipe	mm	125	125		125	125
	Length of tail pipe	m	4	3		3	3
	Rotary angle of boom		370°	365°		365°	365°
	Number of boom sections		4	4		5	5
	Rotary angle of each boom section	°	92/180/180/240	92/180/180/240		91/180/180/180/270	91/180/180/180/270
	Close-control distance	m	33	33		33	33
	Remote-control distance	m	200	200		200	200
Main Technical Parameters in Driving Condition	Max. traveling speed	km/h	85	85		85	80
	Min. turning radius	mm	11900	12100		11900	12100
	Brake distance	m	10	10		10	10
	Approach angle	°	16	16		16	16
	Departure angle	°	11	11		11	11
	Chassis model		JAPAN ISUZU CYH51Y	CHINA  HOWO ZZ5437S4667C		JAPAN ISUZU CYH51Y	CHINA , ; HOWO ZZ5437S4667C
	Wheel base between, , , , , , , the first & the second axle	mm	1850	1800		1850	1800
	Wheel base between the second & the third axle	mm	4605	4600		4605	4600
	Wheel base between the third & the fourth axle	mm	1310	1350		1310	1350
	Front tread	mm	2065	2022		2065	2022
	Rear tread	mm	1850	1830		1850	1830
	Max. engine power	kw	287(1800r/min)	275(2200r/min)		287(1800r/min)	275(2200r/min)
	Max. engine torque	n.m	1863(1100r/min)	1500 /(1100~1600 r/min)		1863(1100r/min)	1500 /(1100~1600 r/min)
	Max. grade ability	%	37	37		35	35
	Fuel consumption	L/100km	38	38		40	40
	Overall dimension(L×W×H)	mm	13800×2490×3995	13650×2490×3960		13100×2500×3900	13300×2500×4000
	Total weight	kg	34500	35000		38000	40000