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4TP (PZlnz 140)

Light Tank

Poland | 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; No A.I. was used in the generation of this content.
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.

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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.

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Power & Performance
Those special qualities that separate one land system design from another. Performance specifications presented assume optimal operating conditions for the 4TP (PZlnz 140) Light Tank.
1 x PZlnz 425 4-stroke, 6-cylinder inline gasoline engine developing 95 horsepower.
Installed Power
34 mph
55 kph
Road Speed
280 miles
450 km
The physical qualities of the 4TP (PZlnz 140) Light Tank.
12.6 ft
3.84 meters
O/A Length
6.8 ft
2.08 meters
O/A Width
5.7 ft
1.75 meters
O/A Height
9,546 lb
4,330 kg | 4.8 tons
Armament & Ammunition
Available supported armament, ammunition, and special-mission equipment featured in the design of the 4TP (PZlnz 140) Light Tank.
1 x 20mm wz. 38 FK-A main gun
1 x 7.92mm wz. 30 TMG coaxial machine gun
Not Available.
Nightvision - NONE
Chemical, Biological, Radiological, Nuclear Protection (CBRN) - NONE
Notable series variants as part of the 4TP (PZlnz 140) family line.
4TP - Base Series Designation; single prototype completed.
PZInz 140 - Alternative designation
Global customers who have evaluated and/or operated the 4TP (PZlnz 140). Nations are displayed by flag, each linked to their respective national land systems listing.

Total Production: 1 Units

Contractor(s): State Factories - Poland
National flag of Poland

[ Poland ]
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Image of the 4TP (PZlnz 140)

Design Qualities
Some designs are single-minded in their approach while others offer a more versatile solution to battlefield requirements.
Some designs stand the test of time while others are doomed to never advance beyond the drawing board; let history be their judge.
Going Further...
The 4TP (PZlnz 140) Light Tank appears in the following collections:
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