Tractor Unit, HowoA7

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HOWO A7 from Haoruitong is a new generation heavy truck developed by Sinotruk. It has surpassed most of domestic tractor units in technology and is known as the “Leader of the Heavy Truck and King of the Road”.

Model Selection

4x2

4x2 Tractor Unit, HOWO A7

Product	Brand	HOWO-A7 Tractor basic configurations and main technical parameters (4X2, Euro III, high floor extended)
Tractor	HOWO A7	Vehicle model		ZZ4187N3517N1B/N2PA	ZZ4184N3517N1B/S2PA	ZZ4187N3517N1B/S2PC	ZZ4187V3517N18/V2PC
		Cab	Model	A7-P
			Type	High floor extended cab, four-point air suspension shock absorber transverse atabilizer, splited single berth, air suspension driver's seat, up /down and front/back adjustable steering wheel, BEHR European-style new integral A/C heater, VDO instrument, CAN bus and electrics control system, safety belt with double locking mechanism, power window and heated review mirror, three locks combined in one, exterior sun visor, top wind deflector side air deflector, electronic hand throttle.
		Engine	Model	D10.34	D10.38	D12.38	D12.42
			Rated power, kW/rpm	249/1,900	279/2,000	279/2,000	309/2,000
			Maximum torque, Nm/rpm	1,490/ 1,200-1,500	1,590/ 1,200-1,500	1,650/ 1,100-1,500	1,820/ 1,100-1,500
			Displacement, L	9.726	9.726	11.596	11.596
			Type	Inline 6 cylinder, supercharged intercooling, central supercharger, electronic high pressure and common rail
		Clutch		Φ430 diaphragm spring clutch, hydraulic control air power assisted. Standard 430A type for D10.38, D12.38 and D12.42 engine, and standard 430B for D10.34 engine
		Gearbox		SINOTRUK HW series 10 speed transmission, main and auxiliary transmission structure, main transmission with double countershaft auxiliary transmission with planetary reducer. Standard HW19710 for D10.34, D10.38, D12.38 and D12.42 engine, optional HW19710T with synchronizer
		Front axle		HF7, rated load of 7t, disc-type or drum-type HF7
		Rear drive axle		ST16 double reducer (speed ratio of 3.93;4.42;4.8)
		Supension		Front and rear leaf spring suspension shock absorber transverses stabilizer
		Steering system		ZF8098 steering gear, ZF steering oil pump, system pressure of 18MPa
		Brake system		Service brake: dual -circuit pneumatic brake;parking brake: energy storage spring air cutoff brake; auxiliary brake:EVB engine exhaust brake. With ABS optional automatic slack adjuster
		Electrical system		CAN bus control, voltage:24V; generator:2240W; starter: 7.5kW; battery: 12V/165Ah, 2 pieces
		Tyre		315/80R22.5 tubeless tyre; 12.00R20 radial tyre
		Tank volume, L		Standart 400L,optional 600L
		Kerb weight, kg		6,800	6,800	6,800	6,800
		Gross mass, kg		18,000	18,000	18,000	18,000
		Authorized maximum towed mass, kg		35,000	35,000	35,000	35,000
		Permissible fifth wheel load, kg		11,070	11,070	11,070	11,070
		External dimensions( length× width× hight ), mm		6160× 2,496× 3,560	6160× 2,496× 3,560	6160× 2,496× 3,560	6160× 2,496× 3,560
		Wheelbase, mm		3,500	3,500	3,500	3,500
		Front/rear overhang, mm		1,540/ 1,120	1,540/ 1,120	1,540/ 1,120	1,540/ 1,120
		Wheel track (front/rear), mm		2,022/ 1,830	2,022/ 1,830	2,022/ 1,830	2,022/ 1,830
		Minimum ground clearance, mm		314	314	314	314
		Approach/departure angle		15/38	15/38	15/38	15/38
		Maximum speed,km/h		95	100	100	100
		Maximum parking slope, %		20	20	20	20
		Minimum turning diameter, m		14	14	14	14
		Ground dearance of fifth wheel joint face (unloaded), mm		1,325	1,325	1,325	1,325
		Front/rear turning radius, mm		1,950/ 1,860	1,950/ 1,860	1,950/ 1,860	1,950/ 1,860
		Traction pin specification		50 #( 2 in.)	50 #( 2 in.)	50 #( 2 in.)	50 #( 2 in.)
		Remark

6x4

6x4 Tractor Unit, HOWO A7

Product	Brand	HOWO-A7 Tractor basic configurations and main technical parameters (6X4, Euro III, high floor extended)
Tractor	HOWO A 7	Vehicle model		ZZ4257N3247N1B/N2PA	ZZ4257N3247N1B/N2PA	ZZ4257N3247N1B/S2PC	ZZ4257N3247N1B/V2PC
		Cab	Model	A7-P
			Type	High floor extended cab, four-point full floating air suspension shock absorber transverse atabilizer, splited single berth, air suspension driver's seat, up /down and front/back adjustable steering wheel, BEHR European style new integral A/C heater, VDO instrument, CAN bus and electrics control system, safety belt with double locking mechanism, power window and reaview mirror, three locks combined in one, exterior sun visor, top wind deflector side air deflector, electronic hand throttle.
		Engine	Model	D10.34	D10.38	D12.38	D12.42
			Rated power, kW/rpm	249/1,900	279/2,000	279/2,000	309/2,000
			Maximum torque, Nm/rpm	1,490/1,200-1,500	1,590/1,200-1,500	1,650/1,100-1,500	1,820/1,100-1,500
			Displacement, L	9.726	9.726	11.596	11.596
			Type	Inline 6 cylinder, supercharged intercooling, central supercharger, electronic high pressure and common rail
		Clutch		Φ430 diaphragm spring clutch, hydraulic control air power assisted.Standard 430A for D10.38, D12.38 and D12.42 engine, and standard 430B type for D10.34.
		Gearbox		SINOTRUK HW series 10 speed transmission,main and auxiliary transmission structure,main transmission with double countershaft auxiliary transmission with planetary reducer. Standard HW19710 for D10.34,D10.38,D12.38 and D12.42 engine, optional HW19710T with synchronizer
		Front axle		HF7, rated load of 7t, disc-type or drum-type
		Rear drive axle		ST16 double reduce (speed ratio of 3.93;4.42;4.8) ST16
		Supension		Front and rear leaf spring suspension ,front suspension with shock absorber, transverse stabilizer, rear suspension is disconnected type with transverse stabilizier .
		Steering system		ZF8098 steering gear, ZF steering oil pump,system pressure of 18MPa
		Brake system		Service brake : dual -circuit air pressure brake; parking brake: energy storage spring air brake; auxiliary brake: EVB Engine exhaust brake. With ABS optional automatic slack adjuster.
		Electrical system		CAN bus control, voltage:24V; generator: 2240W; starter: 7.5kW; battery: 12V/165Ah, 2 pieces
		Tyre		315/80R22.5 tubeless tyre;12.00R20 radial tyre
		Tank volume, L		Standart 400L, optional 600L
		Kerb weight, kg		6,800	6,800	6,800	6,800
		Gross mass, kg		18,000	18,000	18,000	18,000
		Authorized maximum towed mass, kg		35,000	35,000	35,000	35,000
		Permissible fifth wheel load, kg		11,070	11,070	11,070	11,070
		External dimensions ( length×width×hight ), mm		6160×2,496×3,560	6160×2,496×3,560	6160×2,496×3,560	6160×2,496×3,560
		Wheelbase, mm		3,500	3,500	3,500	3,500
		Front/rear overhang, mm		1,540/1,120	1,540/1,120	1,540/1,120	1,540/1,120
		Wheel track(front/rear), mm		2,022/1,830	2,022/1,830	2,022/1,830	2,022/1,830
		Minimum ground clearance, mm		314	314	314	314
		Approach/departure angle		15/38	15/38	15/38	15/38
		Maximum speed, km /h		95	100	100	100
		Maximum parking slope, %		20	20	20	20
		Minimum turning diameter, m		14	14	14	14
		Ground dearance of fifth wheel joint face (unloaded) mm		1,325	1,325	1,325	1,325
		Front/rear turning radius, mm		1,950/1,860	1,950/1,860	1,950/1,860	1,950/1,860
		Traction pin specification		50 #( 2 in.)	50 #( 2 in.)	50 #( 2 in.)	50 #( 2 in.)
		Remark

Driver Cab
Cab of this series traction unit is designed with the help of Italian well known design company, providing stylish and elegant appearance as well as spacious and comfortable interior space.

Power System
Optimized drive system ensures perfect fuel economy. AMT enables stronger comfort in manipulation. Front disc and rear drum discs deliver exceptional safety and reliability. Diaphragm clutch, new front axle with lightweight and high loading capacity and other state of the art assemblies make this tractor unit leading in the domestic high end heavy duty vehicles.