7.5 cm KwK 42
| 7.5 cm KwK 42 | |
|---|---|
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| General Information | |
| Military designation: | Combat gun (on armored vehicles ) or anti-tank gun (on tank destroyers) |
| Manufacturer country: |
.svg){kind=small} German Empire
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| Developer / Manufacturer: | Rheinmetall - Borsig |
| Production time: | 1942 to 1945 |
| Model variants: | 7.5 cm KwK 42 or 7.5 cm PaK 42 |
| Weapon Category: | cannon |
| Technical specifications | |
| Pipe length: | 5,250 mm |
| Caliber : |
75 mm |
| Caliber length : | L / 70 |
| Weight ready for use: | 1,000 kg |
| Furnishing | |
| Sighting device : | Turret riflescope |
| Closure Type : | Falling locking wedge |
| Charging principle: | semi-automatic |
| Ammunition supply: | manually |
| Drive: | electric or handwheel |
| Power supply: | electric |
| Return pipe: | 400 to 430 mm |
| Garnet cartridges: | 75 × 640 mm rim (cartridge) |
The 7.5 cm KwK 42 was a Kampfwagenkanone ( KwK for short ) , which was installed with the caliber length L / 70 as the main armament / turret cannon in the medium battle tank Panzer V , but also in the Panzer IV / 70 under the designation 7.5 -cm-PaK 42 L / 70 (earlier 7.5 cm Stu.K. 42 L / 70) identically constructed as a tank hunting cannon from 1942 onwards in World War II .
History and commitment
If the combat vehicle cannon of a battle tank or other armored combat vehicle was installed in a tank destroyer , the type designation anti-tank cannon was used for the special purpose . In the case of the 7.5 cm KwK 42 , the name of the otherwise structurally identical weapon system was changed to 7.5 cm PaK 42 .
The cannon had an electrically operated fire mechanism. Instead of a mechanically triggered firing pin, there was an electric ignition mechanism. The cannon bolt worked semi-automatically, with the empty cartridge automatically ejected after the grenade had been fired and the barrel returned completely, but the bolt itself remained open - and thus ready for the next shell. After inserting or reloading the next shell, the bolt locked automatically and the cannon was ready to fire again.
particularities
- Commanders aiming device: turret telescopic sight ( binocular ) TZF 12 or 12a (Panther), Sfl.ZF 1a (Jagdpanzer IV / 70 (A) and (V)
- Weight (with muzzle brake and breech): 1,000 kg
- Closure: Semi-automatic drop block wedge closure .
- Pipe return: 400 to 430 mm
- Cartridge: 75 × 640 mm R (and cartridge)
Types of ammunition
Instead of the previously used 75 mm tank shells, only three shell types with the 75 × 640 mm rim cartridge were used for this cannon.
- PzGr. 39/42 - Tank shell 1939 / for 7.5 cm KwK 42 L / 70, with tank shell armor-piercing, with cap and ballistic hood - projectile highly explosive
- PzGr. 40 /42 (Hk) - tank grenade cartridge 1940 / for 7.5 cm KwK 42 L / 70, with tank shell (kinetic energy projectile, hard-core ammunition or hard-core projectile (with tungsten core))
- SprGr. 42 - Grenade cartridge with HE grenade for 7.5 cm KwK 42 L / 70
Average penetration force against homogeneous, rolled armored steel plates at an angle of impact of 30 ° to the vertical of the armored vehicle.
| Type of ammunition (projectile) |
projectile | Explosives filling |
Grenade cartridge | overall length |
Muzzle velocity () |
Penetration after ... | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| 100 m | 500 m | 1000 m | 1500 m | 2000 m | ||||||
| PzGr. 39/42 | 7,200 kg | 18 g RDX slow | 14.300 kg | 893.2 mm | 935 m / s | 138 mm | 124 mm | 111 mm | 99 mm | 89 mm |
| PzGr. 40/42 | 4.750 kg | 11,550 kg | 875.2 mm | 1,120 m / s | 194 mm | 174 mm | 149 mm | 127 mm | 106 mm | |
| SprGr. 42 | 5.740 kg | 11.140 kg | 929.2 mm | 700 m / s | - | - | - | - | - | |
Carrier platforms
- Jagdpanzer: Panzer IV / 70, with slightly modified cannon (also Panzerjägerkanone - PaK)
- Medium tank: Panzerkampfwagen V "Panther", also Jagdpanzer IV (also Sd.Kfz. 171)
- Medium tank: Panzerkampfwagen V "Panther II" (also Sd.Kfz. 171)
PzKpfw V "Panther" (Ausf. G / Sd.Kfz. 171)
"Panther" desert-colored
"Panther II"
7.5 cm PjK 42
See also
Individual evidence
- ↑ Device list see 44R .
- ↑ Armor Penetration Table. Retrieved February 14, 2020 .
