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Soviet Union's KV-1 Model 1941, KV-1B heavy tank

Design

Had extra 25-35 mm of armor that was screwed onto the turret and welded to bow and driver's area.5 Starting in 1942 these had a cast turret. A hull machine gun was added.

Extra Armor

Some of the KV-1s had extra armor added.4 Some had apliqué armor added, while others had screens attached by bolts.4

The foundries at Kuznets Basin produced a cast turret.4 This turret weight over seven tons.4

Armament

In 1941 the 76.2 mm ZiS-5 was first installed in the KV-1.1

Production

Produced in 1941.

Variants

  • KV-1 1941, KV-1B:
  • KV-8: Had flame thrower in turret.4

Specifications

  KV-1 19412
Crew 52
Physical Characteristics  
Weight 103,617 lb
47.5 tons2
Length w/gun 22' 8",
6.25 m2
Length w/o gun 22' 2"
Height 9' 7", 2.75 m2
Width 10' 11", 3.25 m2
Width over tracks  
Ground clearance 0.45 m2
Ground contact length  
Ground pressure 0.78 kg/cm2 2
Turret ring diameter  
Armament  
Main 76.2 mm ZiS-5 L/42
76.2 mm 1940 F-342
Secondary  
MG 3-4: 7.62 mm DT MG2
Side arms  
Quantity  
Main 111-1142, 135 (BR-350A, OF-350, Sh-350A)
Secondary  
MG 3,0242
Side arms  
Armor Thickness (mm)  
Hull Front, Upper 75+26, 1102
Hull Front, Lower 75+31
Hull Sides, Upper 75-1102
Hull Sides, Lower 90
Hull Rear 32, 752
Hull Top 30-402
Hull Bottom 30-402
Turret Front 100, 1102
Turret Sides 95, 1102
Turret Rear 1102
Turret Top 30, 352
Engine (Make / Model) V2K3, W-2-K2
Bore / stroke 4 stroke2
Cooling  
Cylinders V-122
Capacity  
Net HP 600@2,000 rpm2
Power to weight ratio 12.6 hp/ton2
Compression ratio  
Transmission (Type)  
Steering  
Steering ratio  
Starter  
Electrical system  
Ignition  
Fuel (Type) Diesel2
Octane  
Quantity 600-615 liters2
Road consumption  
Cross country consumption  
Performance  
Traverse 360°
Speed - Road 21 mph
29 kph2
Speed - Cross Country 10 mph
Range - Road 155 miles, 250 km2
Range - Cross Country  
Turning radius  
Elevation limits  
Fording depth 5.2'
1.45-1.6 m2
Trench crossing 2.8 m2
Vertical obstacle 0.9-1.2 m2
Climbing ability 36°2
Suspension (Type)  
Wheels each side  
Return rollers each side  
Tracks (Type)  
Length  
Width  
Diameter  
Number of links  
Pitch  
Tire tread  
Track centers/tread  
  KV-1B
Crew 54
Physical Characteristics  
Weight 47.5 tons4
Length 22.3'4
Height 10.65'4
Width 10.93'4
Width over tracks  
Ground clearance  
Ground contact length 13.8'4
Ground pressure  
Turret ring diameter  
Armament  
Main 76.2 mm M1938/394
76.2 mm ZiS-5 L/41.64
Secondary  
MG 3: MG4
Side arms  
Quantity  
Main 1114
Secondary  
MG 3,0244
Side arms  
Armor Thickness (mm)  
Hull Front, Upper 75+35, 1104
Hull Front, Lower  
Hull Sides, Upper 75 - 1104
Hull Sides, Lower  
Hull Rear  
Hull Top 354
Hull Bottom 354
Turret Front 35 - 1004
Turret Sides  
Turret Rear  
Turret Top  
Engine (Make / Model) V-2K4
Bore / stroke  
Cooling  
Cylinders 124
Capacity  
Net HP 5504
Power to weight ratio  
Compression ratio  
Transmission (Type)  
Steering  
Steering ratio  
Starter  
Electrical system  
Ignition  
Fuel (Type) Diesel4
Octane  
Quantity  
Road consumption  
Cross country consumption  
Performance  
Traverse 360°
Speed - Road 22 mph4
Speed - Cross Country  
Range - Road 140 miles4
Range - Cross Country 94 miles4
Turning radius  
Elevation limits  
Fording depth  
Trench crossing  
Vertical obstacle  
Climbing ability  
Suspension (Type)  
Wheels each side  
Return rollers each side  
Tracks (Type)  
Length  
Width 2' 3.5"4
Diameter  
Number of links  
Pitch  
Tire tread  
Track centers/tread  

Sources:

  1. Russian Tanks of World War II Stalin's Armored Might, by Tim Bean & Will Fowler, 2002
  2. Russian Tanks and Armored Vehicles 1917-1945, by Wolfgang Fleischer, 1999
  3. The Encyclopedia of Tanks and Armored Fighting Vehicles - The Comprehensive Guide to Over 900 Armored Fighting Vehicles From 1915 to the Present Day, General Editor: Christopher F. Foss, 2002
  4. Airfix Magazine Guide 22 Russian Tanks of World War 2, John Milsom and Steve Zaloga, 1977
  5. The Encyclopedia of Weapons of World War II, Chris Bishop, 1998
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