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Tanks of World War II

SU-122

GENERAL DATA
Formal Desig­nation SU-122
Manufac­turer(s) Factory No.9 Ural Heavy Machinery Factory (UTZM or Uralmash)
Production Quantity 1148 Production Period Dec. 1942 - early 1944
Type Assault Gun Crew 5
Length overall 6.95 m (22' 10") Barrel Overhang 1.03 m (3' 5")
Width 3.00 m (9' 10") Height 2.32 m (7' 7")
Combat Weight 30900 kg (68000 lbs) Radio Equipment 9R
FIREPOWER
Primary Armament 122mm Howitzer M-30S Ammu­nition Carried 40
Traverse (degrees) Manual (10°L - 10°R) Elevation (degrees) -3° to +25°
Traverse speed (360°) - Sight n.a.
Secondary Armament - Ammu­nition Carried -
MOBILITY CHARACTERISTICS
Engine Make & Model V-2-34 Track Links 72/track
Type & Displace­ment V12, 38.9 liters Track Width 55.0 cm (22")
Horse­power (max.) 500hp @1800rpm Track Ground Contact 372 cm (146")
Power­/Weight Ratio 16.2 hp/t Ground Pressure 0.75 kg/cm2 (10.7 psi)
Gearbox 5 forward, 1 reverse Ground Clearance 0.40 m (1' 4")
Fuel Diesel Turning Radius 7.6 m (24' 11")
Range on/off road 270+/165+ km Gradient 35°
Mileage on road 155 l/100km Vertical Obstacle 0.8 m (2' 7")
Fuel Capacity 420 (+ 270 external)1 L Fording 1.3 m (4' 3")
Speed on road 55 km/h Trench Crossing 2.5 m (8' 2")
ARMOR PROTECTION
Armor Detail Front Side Rear Top­/Bottom
Hull 45mm @30° 45mm @90° 45mm @45° 20mm @0°
Super­structure 45mm @40° 45mm @70°(front) 45mm @50° 20mm @0°
45mm @50°(rear) 45mm @70°(crew)
Mantlet 65mm @rounded - - -
TECHNICAL DRAWINGS AND OTHER IMAGES
Profile Drawing Available SU-122 Model 1943 by George R. Bradford
NOTES
1In general, one of the four 90 liters external fuel tanks was reserved for oil.
REFERENCES
TWWII, PV, T-34IA, ST, RTAV, George R. Bradford

Copyright © 2018 Ralph Zuljan