| GENERAL DATA | |||
|---|---|---|---|
| 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 | |||
|---|---|---|---|
| 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 |
|---|
|
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 |
|---|
| BP22, ST, RTAV, RT, IS2, Russian Military Zone |
Copyright © 2018 Ralph Zuljan