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75-mm Gun Motor Carriage M3

M3 samohybné dělo se 75mm kanónem
Originální název:
Original Name:
75 mm Gun Motor Carriage M3
DD.07.1941-DD.MM.1942 The Autocar Co., Ardmore
Období výroby:
Production Period:
DD.02.1942-DD.MM.1942 M3
Vyrobeno kusů:
Number of Produced:
82 T12
2116 M3 / M3A1
Prototyp vyroben:
Prototype Built:
DD.07.1941 T12
Technické údaje:
Technical Data:
Bojová hmotnost:
Combat Weight:
9072 kg
Celková délka:
Overall Length:
6236 mm
Celková šířka:
Overall Width:
2159 mm
Celková výška:
Overall Height:
2454 mm
Světlá výška:
Ground Clearance:
284 mm
přední, boční, zadní: 6,35 mm
čelný štít: 12,7 mm
bočné štíty: 6,35 mm
vrchní a kryt motorového prostoru: 6.25 mm
čelný štít kanónu: 15,9 mm
boční a vrchní štít kanónu: 6,35 mm
White 160AX radový 6 valec
108,12 kW při 3000 ot/min
Převodové ústrojí:
4+1 manuálna prevodovka so suchou spojkou
Rychlost na silnici:
Road Speed:
72 km/h
Rychlost v terénu:
Cross-country Speed:
40 km/h
Jízdní dosah po silnici:
Cruising Range on Road:
322 km
Jízdní dosah v terénu:
Cross-country Cruising Range:
? km
Překonávání překážek:
Obstacles Crossing:
27 °
Boční náklon:
Side Slope:
? °
Trench Crossing:
? m
Vertical Obstacle:
0.3 m
Fording Depth:
0.81 m
75mm delo M1897A4 (v lafete M3), palebný priemer 59 nábojov

námer: -10°- +29°
odmer: 19° vľavo a 21° vpravo od osi vozidla
Uživatelské státy:
User States:

Odvodená verzia: M3A1 GMC

SNL: G-102

Rozvor: 3441,7 mm
Penumatiky: 8.25x20
1. M3 Infantry Half-Track 1940-73, Steven J.Zaloga, Osprey Publishing, 1994
Catalogue of standart ordnance items, second editions 1944, vol. 1 Tank and Automotive; Office of the Chief of Ordnance Technical Division, Washington D.C.; 1 june 1945
URL CZ: : 0
URL EN: : 0
75 mm M3 Gun Motor Carriage - tank destroyer on the chassis of a half-track vehicle M3 armed with a 75 mm cannon M1897A (originally French Schneider model 1897).

At the beginning of World War II, tanks fully demonstrated their qualities and at the same time revealed large gaps in defense against them. For this reason, they began to work in the US on the means of anti-tank combat. One of the possibilities was the construction of tank destroyers, able to conduct effective anti-tank fire and at the same time maintain mobility. One of the variants in the development was the next tank destroyer.

Despite the obvious shortcomings of the design of the transporter M3, which was not built for possible tank combat, more serious was the complete absence of similar armaments. Therefore, the construction of this tank destroyer was approached as a time-limited measure until the creation of a full-fledged tank destroyer.

In June 1941, a special modification of the 75 mm cannon was placed on the M3 chassis M1897A4. Given that the cannon was a copy of a French field cannon from the time of the First World War, so not only the chassis, but also the cannon was basically an emergency solution. But here decided a large number of parts in the warehouse, which could be quickly adapted for use on a given chassis. This created a prototype tank destroyer, called the T12 GMC.


Modifications were made to the M3 chassis, which allowed the placement of the cannon. The fuel tanks were moved to the rear of the vehicle, and the windows were removed from the cabs to prevent them from shattering during the shot. The cannon was able to measure in the range of 19 ° left and 21 ° right and elevation in the range of -10 ° to 29 °. The operator of the cannon was protected from small arms fire and shards of armor shield with a thickness of 15.9 mm.

The chassis armor was 6.4 mm thick. The drive was provided by a six-cylinder four-stroke White 160AX petrol engine, which made it possible to reach speeds on the road of up to 72 km/h. Based on the performed military tests, the T12 was accepted into service in October 1941 as the M3 GMC.


Before serial production began, pre-series machines were deployed in the Philippines against advancing Japanese troops. In the combat deployment, insufficient protection of the crew from the effects of small arms fire was demonstrated. This problem was solved in the spring of 1942, when the armor was modified to provide some protection from above.

During production, the stocks of cannons on the M2A3 wheeled carriage, which were needed for conversion to the M3 carriage, were exhausted. However, there were still stocks of older M2A2 carriages, from which the M5 carriage was derived. The new M5 tank destroyer was named M3A1 GMC. From an external point of view, it was practically no different from the previous modification.

A total of 2202 M3 GMC tank destroyers of both versions were produced - of which 86 machines in 1941, 1350 pieces in 1942 and 766 pieces in 1943.

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URL EN: : 0

Photos: US Army

M3 -

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