ISU-122

/Vehicles/Allies/USSR/06-SPG/ISU-122/Data/ISU-122.htm | Up-dated:

ISU-122

GENERAL DATA
Other Designation(s)	ISU-122 (ISU = Iosef Stalin Ustanovka or Gun of Iosef Stalin)
Type	Assault Gun *	Radio Equipment	10R
Manufacturer(s)	Factory No.100 Kirovskiy Works in Chelyabinsk (ChKZ or Tankograd)
Crew	5 (Driver, gunner, commander, 2 loaders)
Production Quantity	about 645	Production Period	1943-1945

(*) Tank Destroyer eventually

DIMENSIONS
Combat weight	46000 kg	Ground pressure	0.81 kg/cm²
Length /hull	6.77 m	Length w/Gun	9.80 m
Barrel Overhang	3.03 m	Height	2.5 m
Width	3.25 m	Ground clearance	0.46 m

ARMAMENT
Primary Armament	122 mm Gun A-19S L/45 (1)	Ammunition Carried	20-30
Traverse	Manual (11°Left - 11°Right)	Elevation	-4° to +19° (manual)
Traverse speed (360°)	-	Sight	ST-18
Secondary Armament	12.7mm DShK MG (2)	Ammunition Carried	500
Location	1: Hull front 2:- AA (commander's cupola)

ARMOR
Assembly	Welding
Armor Detail (from the horizontal)	Front	Side	Rear	Top/Bottom
Hull	90 mm / 60°	90 mm / 90°	60 mm / 49° (lower) 60 mm / 41° (upper)	20 mm / 0°
Superstructure	60 mm / 20° (glacis) 90 mm / 60°	75 mm / 65°	60 mm / 90°	30 mm / 0°
Mantlet	60-65 mm / round	-	-	-

AUTOMOTIVE
Engine	V-2-IS (V-2-10)	Type & Displacement	V12, 38.9 liters
Horsepower (maximum)	600 hp at 2000 rpm	Power/Weight Ratio	13.0 hp / ton
Gearbox	4 forward, 1 reverse	Fuel Capacity	520 (+270 external) L Diesel

SUSPENSION
Type	Torsion bars	Road wheels	6 double, steel
Track return rollers	3 double	Sprocket-Wheels	Rear, double
Idler Sprockets	Front, double	Shock absorbers	-
Track Type	Central guides, Cast allow steel, dry pin
Width	650 mm	Pitch	165.10 mm
Links(shoes)	87-90	Track ground contact	4.36 m

PERFORMANCES
Maximum Speed	37 km/hon road, 16 km/h off road	Range	230 km on road, 150 km off road
Mileage	350 L/100 km on road	Maximum grade	36° (from horizontal)
Trench crossing	2.5 m	Vertical obstacles	1.0 m
Maximum fording depth	1.3 m	Minimum turning diameter	0 m

Sources
OnWar.com	Vehicles.com	TNT Hors-Série n°3	-

Drawings

File