M7 medium tank

M7 medium tank
Third production M7 medium tank at the General Motors Proving Ground.
TypeMedium tank
Place of originUnited States
Production history
ManufacturerInternational Harvester Corp.
Produced1942
No. built13 + prototypes[1][2]
Specifications
Mass53,950 lb (24,470 kg)
Length17 ft 2 in (5.23 m)
Width9 ft 4 in (2.84 m)
Height7 ft 9 in (2.36 m)
Crew5 (Commander, loader, gunner, driver, co-driver)

Armor13–64 mm (0.51–2.52 in)
Main
armament
75 mm M3 in M47 mount
71 rounds
Secondary
armament
3 × .30-06 M1919A4 Browning machine gun
4,500 rounds
EngineContinental R975-C1; 9-cylinder radial gasoline
350 hp (260 kW)
SuspensionVertical volute spring suspension
Maximum speed 30 mph (48 km/h) on road

The M7 medium tank, initially T7 light tank, was an American tank, originally conceived as an up-gunned replacement for the M3/M5 light tank ("Stuart"). The project developed to mount the same 75mm armament as the M4 Sherman while retaining the light weight and maneuverability of the M3 Stuart; however, during development the weight of the prototype surpassed the US Army's standard for light tanks and crossed into the medium tank category and was renamed.[3] The M7 had significantly less armor than the M4 Sherman, no greater firepower, and held only a slight advantage in top speed. For these reasons, and because the M4 was already battle-tested and in full production, the M7 was cancelled in 1943.

  1. ^ Chamberlain & Ellis 1981, p. 98.
  2. ^ Cite error: The named reference Hunnicutt was invoked but never defined (see the help page).
  3. ^ Conners, Chris. "Medium Tank M7". The AFV Database. Retrieved October 14, 2014.