SU-122

SU-122
SU-122
Type	Self-propelled howitzer
Place of origin	Soviet Union
Service history
Used by	Soviet Union
Wars	World War II Eastern Front
Production history
Designer	F. F. Petrov
Designed	15 April – December, 1942
Manufacturer	UZTM
Produced	December 1942 – summer 1943
No. built	638
Variants	See variants
Specifications
Mass	30.9 tonnes (68,122 lb)
Length	6.95 m (22 ft 10 in)
Width	3 m (9 ft 10.1 in)
Height	2.32 m (7 ft 7 in)
Crew	5
Armor	45 mm (1.77 in)
Main armament	122 mm M-30S howitzer
Secondary armament	none
Engine	Klimov model V-2 V-12 diesel engine 493 hp (368 kW) (500 PS)
Power/weight	16 hp/tonne
Suspension	Christie
Operational range	Road: 210 km (130 mi) 300 km (190 mi) (with added fuel tanks) Cross-country: 120 km (75 mi) 150 km (93 mi) (with added fuel tanks)[1]
Maximum speed	55 km/h (34 mph)

The SU-122 (from Samokhodnaya Ustanovka 122 mm) was a Soviet self-propelled howitzer or assault gun used during World War II. The number "122" in the designation represents the caliber of the main armament, a 122 mm M-30S howitzer. The chassis was that of the T-34.^[2][3]