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United States' M4A4 medium tank

Photos

M4A4 Medium Tank:
United States' M4A4 Medium Tank
Aberdeen Tank Museum
M4A4 Medium Tank:
United States' M4A4 Medium Tank
U.S. Ordnance Dept.
M4A4 Medium Tank with spigot mortar:
United States' M4A4 Mine Exploder
Aberdeen Tank Museum
M4A4 Medium Tank drawing:
United States' M4A4 Medium Tank Drawing
U.S. Ordnance Dept.
Dragon Armor, 60278:
Dragon's Armor, 60278, Polish M4A4
Dragon Armor, 60284:
Dragon Diecast 1/72 Armor, 60284 France M4A4 Medium Tank

Design

Welded hull. Three piece bolted front. Early models had M34 gun mount and vision slots in hull eliminated. Later vehicles had the M34A1 mount.

The length of hull had to be extended for the 5 engines.7

Was the main model supplied to England.7

The 75 mm gun fired a 14.4 lb. AP round at a muzzle velocity of 2,050'/sec.6

Production

Standardized in February 1942. Built by Detroit Tank Arsenal.

Variants

  • Tank Recovery Vehicle M32B4: Based on M4A4.
  • M4A4 Mine Exploder: Used spigot mortar bombs.6

Specifications

  M4A4 medium tank1, Sherman V2
Crew 51,4,6
Radio SCR-5081
Radio - command tank SCR-5061
Physical Characteristics  
Weight 71,000 lb1,4
34.8 tons, 36.25 tons6
Length w/gun 19' 10.5"1,4, 20.3'6
Length w/o gun 19' 10.5"
Height 8.9'6, 9'1,3,4
Width 8' 7"1,3,4, 8.7'6
Width over tracks  
Ground clearance 15.75"1, 17"6
Ground contact length 13' 4"1,6, 13' 6"
Ground pressure 12.9 psi6, 13.4 psi1
Turret ring diameter  
Armament  
Main 75 mm4
75 mm M31,3
75 mm M3, L/406
Secondary  
MG 3: MG4
2: .30 cal MG3
MG - coaxial 1: .30 cal M1919A4 MG6
1: .30 cal Browning M1919A4 MG1
MG - hull 1: .30 cal M1919A4 MG6
1: .30 cal Browning M1919A4 MG1
MG - antiaircraft 1: .50 cal MG3
1: .50 cal M2 HB MG1
Side arms 2" M3 Mortar1
.45 cal submachine gun1
Quantity  
Main 956, 971,3
Secondary  
MG .30: 4,7501,3, 7,7506
.50: 3001
Side arms .45: 6001
Mortar: 121 (4: Fragmentation Mk III, 4: M8 Smoke, 2: M2 Offensive Mk III, 2: Thermite)1
Armor Thickness (mm) 1" - 2"4
123, 20 - 855
Front: 2"@46°6
Side: 1.5"6
Hull Front, Upper 2"1
503
Hull Front, Lower 1.5" - 2"1
Hull Sides, Upper 1.5" - 2"1
Hull Sides, Lower 1.5" - 2"1
Hull Rear 1.5"1
Hull Top 1"1
Hull Bottom 0.5" - 1"1
Turret Front 3"1, 3.2"6
753
Mantlet: 1"6
Turret Sides 2"1
Turret Rear  
Turret Top 1"1
Engine (Make / Model) Chrysler 5-line WC1, Chrysler 5 line4, 5: Chrysler7, 5xChrysler 5-2516
Bore / stroke  
Cooling Water4,6
Cylinders 304, 5x66,7
Capacity  
Net HP 370@2,850 rpm1, 4254,5, 430@2,500 rpm6
Power to weight ratio  
Compression ratio 6.5:16
Transmission (Type) Synchromesh6
5 forward, 1 reverse6
Steering Controlled differential6
Steering ratio 1.515:11
Starter Electric6
Electrical system 24 volt1,6
Ignition Magneto6
Gear ratio - 1st gear 7.56:11
- 2nd gear 3.11:11
- 3rd gear 1.78:11
- 4th gear 1.11:11
- 5th gear 0.73:11
- Reverse 5.65:11
Fuel (Type) Gasoline1,6
Octane 801
Quantity 150 gallons1,6, 160 gallons
Road consumption  
Cross country consumption 0.6 mpg6
Performance  
Traverse 360°3
Hand and hydraulic6
Speed - Road 25 mph1,4,6, 26 mph
Speed - Cross Country  
Range - Road 100 miles1, 120 miles6
Range - Cross Country 100 miles6
Turning radius  
Elevation limits -12° to +8°
Fording depth 3' 6"1,3,6
Trench crossing 8'1,3,6
Vertical obstacle 2'1,3,6
Climbing ability 31° (60%) slope6, 60%1
Suspension (Type) Vertical volute.3
Horizontal spring, 3 bogies of 2 wheels each6
Wheels each side 3x26
Wheel size 20" x 9"1
Wheel size - idler 28 1/8" x 9"1
Return rollers each side 36
Tracks (Type) Dry pin, double pin per shoe, rubber cleat6
Length  
Width 16.5"3, 16.6"6
Diameter  
Number of links 846
Pitch 6"6
Tire tread  
Track centers/tread 6.9'6, 6' 11"1,3

Sources:

  1. The American Arsenal, 1996
  2. Airfix Magazine Guide #26 American Tanks of World War 2, Terry Gander and Peter Chamberlain, 1977
  3. British and American Tanks of World War Two, The Complete Illustrated History of British, American, and Commonwealth Tanks 1933-1945, Peter Chamberlain and Chris Ellis, 1969
  4. Tanks of the World, 1915-1945, Peter Chamberlain, Chris Ellis, 1972
  5. The Encyclopedia of Weapons of World War II, Chris Bishop, 1998
  6. Tank Data, Aberdeen Proving Grounds Series, 1968?
  7. Tanks of World War II, Duncan Crow, 1979
20th Century American Military History Crucial Site