ISU-122

ISU-122
A Polish ISU-122
TypeSelf-propelled gun
Place of originSoviet Union
Production history
No. built2,410 (all types)
Specifications
Mass45.5 tonnes (50.2 short tons; 44.8 long tons)
Length9.85 m (32 ft 4 in)
Width3.07 m (10 ft 1 in)
Height2.48 m (8 ft 2 in)
Crew4 or 5
ArmorFront 90 mm (3.5 in)
Gun shield 120 mm (4.7 in)
Side 90 mm (3.5 in)
Main
armament
  • A-19S 122 mm gun, with 30 rounds (ISU-122)
  • D-25S 122 mm gun (ISU-122S)
Secondary
armament
12.7 mm DShK AA machine gun, with 250 rounds
Engine12-cyl. 4-stroke diesel model V-2IS
520 hp (382 kW)
Power/weight11 hp/tonne
Suspensiontorsion bar
Operational
range
Road:
220 km (140 mi)
Cross-country:
80 km (50 mi)
Maximum speed 37 km/h (23 mph)

The ISU-122 (acronym of Istrebitelnaja - or Iosif Stalin-based - Samokhodnaya Ustanovka 122) was a Soviet assault gun used during World War II, mostly in the anti-tank role.

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