GENERAL DATA | |||
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Other Desig­nations | ISU-122S | ||
Manufac­turer(s) | Factory No.100 Kirovskiy Works in Chelyabinsk (ChKZ or Tankograd) | ||
Production Quantity | about 14001 | Production Period | 1944-1945 |
Type | Assault Gun | Crew | 5 |
Overall Length | 9.8 m (32' 2") | Barrel Overhang | 3.0 m (9' 10") |
Width | 3.1 m (10' 2") | Height | 2.5 m (8' 2") |
Combat Weight | 46000 kg (101000 lbs) | Radio Equipment | 10RF |
FIREPOWER | |||
---|---|---|---|
Primary Armament | 122mm Gun D-25S | Ammu­nition Carried | 20-30 |
Traverse (degrees) | Manual (14°) | Elevation (degrees) | -3° to +16° |
Traverse speed (360°) | - | Sight | TSh-17 |
Secondary Armament | 12.7mm DShK MG (AA) | Ammu­nition Carried | 500 |
MOBILITY CHARACTERISTICS | |||
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Engine Make & Model | V-2-IS | Track Links | 87-90/track |
Type & Displace­ment | V12, 38.9 liters | Track Width | 65 cm (26") |
Horsepower (max.) | 600hp @2000rpm | Track Ground Contact | 436 cm (172") |
Power­/Weight Ratio | 13.0 hp/t | Ground Pressure | 0.81 kg/cm2 (11.5 psi) |
Gearbox | 4 forward, 1 reverse | Ground Clearance | 0.46 m (1' 6") |
Fuel | Diesel | Turning Radius | 0 |
Range on/off road | 150(230) km | Gradient | 36° |
Mileage on/off road | 350 l/100km | Vertical Obstacle | 1.0 m (3' 3") |
Fuel Capacity | 520 (+ 270 external)2 L | Fording | 1.3 m (4' 3") |
Speed on/off road | 37/16 km/h | Trench Crossing | 2.5 m (8' 2") |
ARMOR PROTECTION | ||||
---|---|---|---|---|
Armor Detail | Front | Side | Rear | Top/Bottom |
Hull | 90mm @60° | 90mm @90° | 60mm @49° | 20mm @0° |
Super­structure | 60mm @12°(glacis) | 75mm @75° | 60mm @41° | 30mm @0° |
90mm @60° | 60mm @90° | |||
Mantlet | 100mm @round | - | - | - |
NOTES |
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1Total ISU-122, ISU-122S and ISU-152 production is claimed to be 4075 by June 1945 by Zaloga. The estimate provided here assumes 25% of 1944 production and 50% of 1945 production. 2It is assumed here that three 90 liter tanks are used for fuel. |
REFERENCES |
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BP22, ST, RTAV, RT, IS2, Russian Military Zone |
Copyright © 2018 Ralph Zuljan