7.5 cm KwK 40
German tank gun and anti-tank gun / From Wikipedia, the free encyclopedia
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The 7.5 cm KwK 40 (7.5 cm Kampfwagenkanone[lower-alpha 1] 40) was a German 75 mm Second World War era vehicle-mounted gun, used as the primary armament of the German Panzer IV (F2 model onwards) medium tank and the Sturmgeschütz III (F model onwards) and Sturmgeschütz IV assault guns which were used as tank destroyers.
7,5 cm KwK 40 (L/48) | |
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Type | Tank gun |
Place of origin | Germany |
Service history | |
Used by | Germany |
Wars | World War II |
Production history | |
Designer | Rheinmetall-Borsig AG |
Manufacturer | Rheinmetall-Borsig AG |
Unit cost | 13500 RM |
Produced | 1942-45 |
Specifications | |
Mass | 750 kg (1,650 lb) |
Barrel length | 361.5 cm (11 ft 10.3 in) bore (48 calibers) |
Shell | Fixed QF 75×495mm R |
Caliber | 75 mm (2.95 in) |
Elevation | -10° to +20° |
Rate of fire | 10–15 round per minute |
Muzzle velocity | 750 m/s (2,500 ft/s) |
Maximum firing range | 7,700 m (8,400 yd) |
The design of the KwK 40 was adapted from the similar towed anti-tank gun, the 7.5 cm Pak 40. It replaced the short-barrel 7.5 cm KwK 37 a 24-calibre long close-support gun, providing a huge improvement in firepower for mid-war tank designs. It came in two versions, 43 ("L/43") and 48 ("L/48") calibres long barrels, the former used during 1942 and early 1943, and the latter after that point. Along with the Pak 40, the KwK 40/StuK 40 was the most numerous anti-tank gun of the German army, and remained an effective weapon until the war's end.