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120mm PM-43


120mm PM-38 | China: Type 53 & Type 55


Overview


120mm PM-38

120-PM-38 mortar on display in a museum in Omsk, Russia.
Source: Vitaly V. Kuzmin - © GNU Attribution Share Alike license

Origin
Soviet Union
Type
Heavy mortar
Entered service
1938
Status
In service
Development
1930's
Developer
Soviet Union
Production
1938 - late 1960's (Soviet production)
Producer
Soviet Union
China
Egypt
Number produced
Produced in very large numbers
Designations
M1938, M1943
PM-38, PM-43
Type 53 (Chinese production PM-43)
UK2 (Egyptian production PM-43)
120 Krh/38 (Finnish designation for PM-38)
12 cm Granatwerfer 378(r) (Beutewaffen index)
120 mm Granatwerfer 43 (East German service)
Notable users
Soviet Union

Description


Introduction

The PM-43 is a World War 2 era heavy 120mm smoothbore mortar of Soviet origin. The PM designation refers to "Polkovoy Minomet", Russian for regimental level mortar. The design started out as the PM-38, which is also known as the M1938. The PM-43 is a slightly updated model that was produced in much larger numbers than the PM-38 as it was widely exported and produced until the later stages of the Cold War

Design

The design is based on the French Brandt Mle 35 mortar. The PM-38 is a conventional smoothbore muzzle loaded mortar. Besides having longer shock absorbers and some other minor differences the PM-43 is similar to the PM-38. The system consists of four major parts: the barrel, base-plate, bipod and two wheel carriage. The fixed spread bipod allows for manual traverse and elevation. A crew of six is normally used to operate the weapon.

Firepower

The PM-43 provides a lot of fire power with its ability to fire 12 to 15 rounds per minute to targets ranging 460 to 5.700 meters. The 120mm shells are very powerful compared to medium caliber mortars. At the time of development the design was very modern and capable. Judging by today's standard the range is somewhat limited and the weight is excessive.

Mobility

For a heavy mortar the M43 is very mobile due to its well designed two wheel carriage. Normally it is towed or transported by a light truck, but can be hand drawn over short distances by infantry.

Users

The Soviet Union has been the main user of the PM-38 and PM-43 mortar. In the mid and late Cold War era the M120 and 2B11 mortar were designed to supplement and replace these World War 2 era mortars. Most Soviet allies received stocks of these mortars during the Cold War. Nowadays many users are replacing it with more modern designs due to its age. However, the M43 still is one of the most common heavy mortars in the world.

Variants


120mm PM-38

120-PM-38 mortar on its two wheel carriage on display in a museum in Germany. Note the retrofitted muzzle device added in East German service.
Source: Ralf Roletschek - © GNU Attribution - Share Alike license

List of production models

120-PM-38
Original Soviet production model.
120-PM-43
Improved Soviet production model.
12 cm Granatwerfer 42
Nazi German copy of PM-38.
Type 53
Chinese direct copy of PM-43, including Soviet style two wheel carriage.
Type 55
Chinese Type 53 using a new simplified heavy duty two wheel carriage.
UK2
Egyptian production model produced by Helwan arsenal.

Details


Facts 120-PM-43
General
Origin
Soviet Union
Type
Mortar
Crew
6
Dimensions
Weight
275 kg in firing position
477 kg with two wheel carriage and towing hook
Length
2 m (travelling)
Width
1.548 m (travelling)
Height
1.206 m (travelling)
Ordnance
Type
120mm smoothbore mortar
Barrel length
1.85 m
Muzzle velocity
272 m/s
Elevation
+45 to +80°
Traverse
4° left and right
Fire control
Sights
Indirect fire sight
Firepower
Rate of fire
15 rpm maximum
10 rpm normal
70 rounds/hour sustained
Range
5.7 km maximum
460 m minimum
Carriage
Type
Separate 2 wheel carriage
Tread
1.21 m
Mobility
Towing vehicle
4x4 light truck

Related articles


12 cm Granatwerfer 42

The Nazi German 12 cm Granatwerfer 42 is a copy of the Soviet 120mm PM-38.

120mm 2B11 Sani

Despite the introduction of the M120 in the mid 1950's, the vast majority of 120mm PM-43 mortars in Soviet service were actually replaced by the 2B11 Sani.
Introduced in the early 1980's, the 2B11 is more mobile and has a longer range.

120mm Type W86

The Chinese W86 was developed as a more potent replacement for the Type 55 in Chinese service.