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Germany Neubaufahrzeug development Ordnance classification - PzKpfw Nb.Fz
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| The Neubaufahrzeug development was a Heavy Tank designed in 1934, manufactured by Rheinmetal and was in use from 1936 to 1937. |
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General Details (Heavy Tank) |
| Specifications | Operational Date(s) | 1936 - 1937 | Ordnance classification | PzKpfw Nb.Fz | Quantity Produced | 2 | Weight | 23.4 tonne | Crew | 6 | M.G's small | 3 | M.G's large(>10mm) | n/a | Length | 6.65 mtr | Width | 2.90 mtr | Height | 2.90 mtr | Engine Details/Performance | Max Road Speed | 19 mph | Max Cross Country Speed | 6 mph | Range Road | 120 miles | Range Cross Country | 48 miles | Fuel Type | Petrol | Fuel Capacity | 475 gal | Horse Power | 290 hp | Power/Weight | 12 hp/tonne | | General Information | The Neubaufahrzeug development was a Heavy Tank designed in 1934, manufactured by Rheinmetal and was in use from 1936 to 1937.
The vehicle was powered by BMW '290 hp BMW Va' petrol powerplant producing 290 HP which could drive the vehicle on roads at up to 19 mph with a range of about 120 miles before refuelling. Its cross country performance was adequate providing a max speed of about 6 mph and a range of about 48 miles.
It was armed with 3 light machine guns. Its main armament consisted of a 7.5cm KwK 37 L/24 which could penetrate 68 mm of flat plate at 200 metres Its main armament consisted and a 3.7cm KwK 36 which could penetrate 41 mm of flat plate at 200 metres.
These were the early development of the German medium and heavy tank models. They were multi-turreted, heavy and slow, they were not considered successful, which led to only five being produced, two of which were development models made of mild steel.
The three production models were primarily used for propaganda purposes and training, though three took part in the Battle of Norway in 1940.
It would seem that three Nb.Fz's were attached to the 1st Panzer Army and destroyed in battle with Soviet BT-7 tanks in present-day Ukraine in June 1941. | |
| Turret | Front | | 8mm | @ | 10° | (8mm) | Side | | 8mm | @ | 10° | (8mm) | Rear | | 8mm | @ | 10° | (8mm) | Top | | 8mm | @ | 85° | (8mm) | | Superstructure | Front | | 8mm | @ | 70° | (23mm) | Side | | 8mm | @ | 0° | (8mm) | Rear | | 8mm | @ | 0° | (8mm) | Top | | 8mm | @ | 90° | (8mm) | |
Hull | Front | | 8mm | @ | 20° | (9mm) | Side | | 8mm | @ | 0° | (8mm) | Rear | | 8mm | @ | 0° | (8mm) | Top | | 8mm | @ | 90° | (8mm) | | Armour (x)mm @ (y)° (Effective mm @ 0°) | Effective Armour - Maximum 23 mm - Minimum 8 mm |
| Weapon Details |
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7.5cm KwK 37 L/24 7.5cm Kampfwagenkanone 37 L/24
(translates as Tank Gun) |
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Ammunition Details |
Name/Id |
Calibre Weight MVelocity |
Explosive Content |
K. Gr. rot Pz
(AP Armor Piercing)
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75mm 6.8Kg 385M/Sec | |
Quoted Penetration 38mm@500m/30° |
Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
Flight Time(Secs) |
0.26 |
0.53 |
1.1 |
2.33 |
3.71 |
5.28 |
7.09 |
9.17 |
Penetration(mm@30°) |
63 |
58 |
53 |
46 |
40 |
35 |
30 |
25 |
Penetration(mm@0°) |
73 |
68 |
62 |
54 |
47 |
41 |
35 |
29 |
Hit Probability(%) |
98 |
98 |
98 |
54 |
22 |
6 |
2 |
1 |
7.5 cm Sprgr.34 - short
(HE High Explosive)
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75mm 4.4Kg 385M/Sec | 0.454Kg explosive |
Maximum Range 6250 Mtr |
Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
Flight Time(Secs) |
0.26 |
0.53 |
1.1 |
2.33 |
3.71 |
5.29 |
7.09 |
9.17 |
Direct Fire |
Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
Flight Time(Secs) |
0.26 |
0.53 |
1.1 |
2.33 |
3.71 |
5.29 |
7.09 |
9.17 |
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Hit Probability(%) |
98 |
98 |
98 |
54 |
22 |
6 |
2 |
1 |
Blast/Fragmentation Effects |
Burst radius Infantry in open 99% kill | 3 mtr |
Burst radius Infantry in open 66% kill | 6 mtr |
Burst radius Infantry in open 33% kill | 16 mtr |
Armour Penetration inc roof at 1 mtr | 1 mm |
An explosion within 3 mtr of infantry in the open will cause 99% casualties - lethal. |
An explosion within 6 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's. |
An explosion within 16 mtr of infantry in the open will cause 33% casualties. |
The blast effect of this shell exploding within 1 mtr of an armoured vehicle will penetrate 1 mm of the tank armour including the roof. |
Weapon Details |
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3.7cm KwK 36 3.7cm Kampfwagenkanone 36
(translates as Tank Gun) |
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Ammunition Details |
Name/Id |
Calibre Weight MVelocity |
Explosive Content |
PzGr.18
(AP Armor Piercing)
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37mm 0.66Kg 745M/Sec | |
Quoted Penetration 29mm @ 500mtr/0° |
Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
Flight Time(Secs) |
0.14 |
0.28 |
0.6 |
1.37 |
2.39 |
3.79 |
5.85 |
9.18 |
Penetration(mm@30°) |
39 |
35 |
31 |
25 |
19 |
14 |
10 |
6 |
Penetration(mm@0°) |
46 |
41 |
36 |
29 |
22 |
17 |
12 |
8 |
Hit Probability(%) |
98 |
98 |
98 |
90 |
54 |
22 |
3 |
1 |
3.7cm Pzgr 40
(AP40 Armour Piercing Tungsten Cored)
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37mm 0.35Kg 1020M/Sec | |
Quoted Penetration 64mm @ 100mtr/0° |
Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
Flight Time(Secs) |
0.1 |
0.21 |
0.46 |
1.12 |
2.12 |
3.86 |
7.61 |
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Penetration(mm@30°) |
58 |
51 |
44 |
33 |
24 |
15 |
8 |
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Penetration(mm@0°) |
67 |
60 |
51 |
39 |
28 |
18 |
10 |
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Hit Probability(%) |
98 |
98 |
98 |
96 |
60 |
22 |
2 |
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3.7cm Sprgr Patr
(HE High Explosive)
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37mm 0.61Kg 700M/Sec | 0.025Kg explosive |
Maximum Range not shown as gun elevation is limited |
Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
Flight Time(Secs) |
0.15 |
0.3 |
0.64 |
1.46 |
2.54 |
4.03 |
6.22 |
9.76 |
Direct Fire |
Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
Flight Time(Secs) |
0.15 |
0.3 |
0.64 |
1.46 |
2.54 |
4.03 |
6.22 |
9.76 |
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Hit Probability(%) |
98 |
98 |
98 |
88 |
44 |
15 |
3 |
1 |
Blast/Fragmentation Effects |
Burst radius Infantry in open 99% kill | 0 mtr |
Burst radius Infantry in open 66% kill | 0 mtr |
Burst radius Infantry in open 33% kill | 1 mtr |
Armour Penetration inc roof at 1 mtr | 0 mm |
An explosion within 0 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's. |
An explosion within 1 mtr of infantry in the open will cause 33% casualties. |
The blast effect of this shell exploding within 1 mtr of an armoured vehicle will not cause any significant armour damage. |
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Hit probability is based on a static 2 x 2.4 metre panel at 0 degrees(vertical) at the range specified.
The data that has been used to create these records has come from Wikipedia, The Lone Sentry, The Bundes Archive
and numerous books and websites that have provided the detailed information that has not been available anywhere else. The
information we use to calculate the penetration tables, flight times and the hit probability comes from the Gun Calibre,
the Shell Mass(Kg) and the muzzle velocity, plus range reductions to allow for gravity and wind resistance. This calculation
originally came from a pre-war Krupp calculation which has been modified, and seems to fit the actual test results.
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Page Last Updated: 2025-01-01
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