Aircraft / Aviation Vehicles & Artillery Small Arms Warships & Submarines Military Ranks Military Pay Scale (2024) Special Forces


Self-Propelled Gun (SPG)

Soviet Union | 1942

"The Su-122 became the first dedicated assault gun for the Red Army in World War 2."

Power & Performance
Those special qualities that separate one land system design from another. Performance specifications presented assume optimal operating conditions for the Su-122 Self-Propelled Gun (SPG).
1 x Model V-2-34 V12 38.9 liter diesel engine developing 500 horsepower at 1,800rpm.
Installed Power
34 mph
55 kph
Road Speed
186 miles
300 km
The physical qualities of the Su-122 Self-Propelled Gun (SPG).
22.8 ft
6.95 meters
O/A Length
9.8 ft
3 meters
O/A Width
7.6 ft
2.32 meters
O/A Height
68,123 lb
30,900 kg | 34.1 tons
Armament & Ammunition
Available supported armament, ammunition, and special-mission equipment featured in the design of the Su-122 Self-Propelled Gun (SPG).
1 x 122mm main gun
40 x 122mm projectiles
Notable series variants as part of the Su-122 family line.
SU-122 - Base production model
SU-122M - Modernized system featuring 122mm U-11 main gun (replacing the M-30 version of the main gun).
SU-122-III - Proposed upgrade; fitting 122mm D-6 gun to SU-85 chassis; never produced.

Authored By: Staff Writer | Last Edited: 01/08/2018 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.

In June of 1941, German leader Adolph Hitler turned his attention the invasion of the Soviet Union. Though initially catching the Red Army completely by surprise, defensive lines were more-or-less stabilized and development began on systems capable of repelling any further German Army advance. One such development, intended to fight tanks and support infantry, became the SU-122. Design of the vehicle began in the summer of 1942 and the SU-122 became the first dedicated "assault gun" for the Red Army during World War 2.

By this time, the T-34 medium tank was coming into its own for the Russian armored divisions. This meant that she was in constant supply and readily available. As such, quick conversions of existing systems like the T-34 during the war became commonplace for many armies. The T-34 served as the chassis for the new assault gun design which mounted a short-barreled, low-velocity 122mm M-30 series field howitzer into a fixed superstructure. The superstructure featured sloped armor to help with ballistics protection but only allowed for slight traverse (left-right movement) of the main armament. As such, the entire vehicle would have to be pointed towards a target area for maximum effectiveness. Up to 40 x 122mm projectiles were carried aboard with no secondary machine guns for self-defense.

Content ©MilitaryFactory.com; No Reproduction Permitted.

The relatively quick conversion process allowed the SU-122 to reach front lines in late 1942. However, the short-barreled, low-velocity gun proved somewhat ineffective against German medium Panthers and heavy Tigers once in practice. Soviet engineers took to designing a new compatible projectile with a hollow charge to help the situation but the improvement was suspect at best. Where the SU-122 series did shine, however, was in support of infantry actions where its powerful 122mm high-explosive projectiles terrorized collections of enemy troops. The weapon also proved effective in dislodging or eliminating dug-in enemy positions, even those held up in fortifications. Up to March 1945, some 1,148 SU-122 examples rolled off of Soviet assembly lines and into the hands of awaiting tankers.

While the Red Army found a use for their SU-122, the series was gradually overtaken in its assault role by the newer SU-152 mounting its 152mm armament. While these two machines fulfilled the Soviet need for an assault gun, this still left them without a capable tank-fighting system, spurring the development of tracked weapons such as the SU-85 and SU-100 series soon to follow.

Content ©MilitaryFactory.com; No Reproduction Permitted.
Global customers who have evaluated and/or operated the Su-122. Nations are displayed by flag, each linked to their respective national land systems listing.

Total Production: 1,150 Units

Contractor(s): Uralsky Machine Building Factory (UZTM) - Soviet Union
National flag of the Soviet Union

[ Soviet Union ]
1 / 3
Image of the Su-122
Front left side view of an SU-122 on display
2 / 3
Image of the Su-122
Front left side view of an SU-122; note main gun traverse and elevation
3 / 3
Image of the Su-122
Front right side view of an SU-122 at rest; note sloped fixed superstructure

Going Further...
The Su-122 Self-Propelled Gun (SPG) appears in the following collections:
Disclaimer | Privacy Policy | Cookies

2024 Military Pay Scale Military Ranks of the World U.S. Department of Defense Dictionary Conversion Calculators Military Alphabet Code Military Map Symbols Breakdown U.S. 5-Star Generals List WWII Weapons by Country

The "Military Factory" name and MilitaryFactory.com logo are registered ® U.S. trademarks protected by all applicable domestic and international intellectual property laws. All written content, illustrations, and photography are unique to this website (unless where indicated) and not for reuse/reproduction in any form. Material presented throughout this website is for historical and entertainment value only and should not to be construed as usable for hardware restoration, maintenance, or general operation. We do not sell any of the items showcased on this site. Please direct all other inquiries to militaryfactory AT gmail.com. No A.I. was used in the generation of this content.

Part of a network of sites that includes GlobalFirepower, a data-driven property used in ranking the top military powers of the world, WDMMA.org (World Directory of Modern Military Aircraft), WDMMW.org (World Directory of Modern Military Warships), SR71blackbird.org, detailing the history of the world's most iconic spyplane, and MilitaryRibbons.info, cataloguing military medals and ribbons. Special Interest: RailRoad Junction, the locomotive encyclopedia.

©2024 www.MilitaryFactory.com • All Rights Reserved • Content ©2003-2024 (21yrs)