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4TP (PZlnz 140)

Light Tank [ 1937 ]

While 480 4TP Light Tanks were ordered by the Polish government, the German conquest in 1939 terminated all hopes and left just a single prototype.

Authored By: Staff Writer | Last Edited: 07/01/2017 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

Like other world powers after World War 1, the Polish government moved on acquiring the popular British-originated Carden-Lloyd "tankette". In 1929, the military procured about ten Mark VI versions which would evolve the local, license-produced "TK" line. The lightweight, nimble and relatively inexpensive tankettes saw widespread service under a plethora of national flags including the Soviet Union and Japanese Empire.

Inevitably, thought turned to replacing the rather limited little systems amidst changing times in Europe. As such, the "4TP" light tank was being developed as a direct successor. The design included four road wheels to a track side, a front-mounted drive sprocket and a rear-mounted track idler. There were two track return rollers to manage the upper track portions. The chassis was covered by a fixed armored superstructure to house the crew and fighting compartment. A 360-degree traversable turret was set at the middle of the hull roof. The vehicle was crewed by two, a driver and commander - the commander doubling as his own gunner and loader and resided in the turret. The turret was fitted with a 20mm wz. FK-A main gun as primary armament as well as a 7.92mm wz. 30 TMG machine gun in a coaxial fitting. Dimensionally, the 4TP exhibited a length of 12.6 feet, a width of 6.8 feet and a height of 5.7 feet. It weighed 4.8 (short) tons. Armor protection was 17mm at the thickest facing.©MilitaryFactory.com
Power for the tank was served through 1 x PZInz 425 4-stroke, 6-cylinder inline gasoline engine developing 95 horsepower. This supplied the hull with a top road speed of 34 miles per hour and an operational road range of 280 miles. Track wheels were suspended for cross-country travel.

The 4TP emerged in 1937 and was also known under the designation of "PZInz 140". Polish authorities were impressed enough with the indigenous design that they set an order for 480 examples to be manufactured. However, with the German invasion of Poland in September of 1939 to begin World War 2 (followed by the Soviet invasion a few weeks later), the 4TP initiative fell to naught.©MilitaryFactory.com
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Service Year

Poland national flag graphic


National flag of Poland Poland
(OPERATORS list includes past, present, and future operators when applicable)
Infantry Support
Support allied ground forces through weapons, inherent capabilities, and / or onboard systems.
Engage armored vehicles of similar form and function.

12.6 ft
3.84 m
6.8 ft
2.08 m
5.7 ft
1.75 m
9,546 lb
4,330 kg
4.8 tons
(Showcased structural values pertain to the base 4TP (PZlnz 140) production variant. Length typically includes main gun in forward position if applicable to the design)
Powerplant: 1 x PZlnz 425 4-stroke, 6-cylinder inline gasoline engine developing 95 horsepower.
34.2 mph
(55.0 kph)
279.6 mi
(450.0 km)
(Showcased performance specifications pertain to the base 4TP (PZlnz 140) production variant. Compare this entry against any other in our database)
1 x 20mm wz. 38 FK-A main gun
1 x 7.92mm wz. 30 TMG coaxial machine gun

Supported Types

Graphical image of a tank cannon armament
Graphical image of a tank medium machine gun

(Not all weapon types may be represented in the showcase above)
Not Available.

4TP - Base Series Designation; single prototype completed.
PZInz 140 - Alternative designation

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Image of the 4TP (PZlnz 140)


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