At an Army Weapons Department technical conference held on October 28, 1935, Daimler-Benz suggested using the M 71 (DB 600) aircraft engine that would produce 550-600 hp for a Grosstraktor (heavy tractor) that was being considered to be added to the Panzer forces. The Army Weapons Department on June 3, 1937, issued a contract to Daimler-Benz for a mock-up of the heavy tank. The engines were initially scheduled to be ready in the spring of 1938 but were delayed by other priorities. Two MB 507 engines were converted and used in the VK 3001 (dB) prototype.
Other contracts were given to Henschel, MAN, and Porsche to develop a tank to eventually replace the PzKpfw IV.8 It was to initially have the 7.5 cm KwK L/24 tank gun and then later have the 10.5 cm KwK L/28 in the turret.
Rheinmetall-Borsig designed the turret.4
The gunner sat on the left hand side and had a binocular sight in the early models that was replaced by a monocular sight.8 Firing the gun was with an electronic trigger that was on the hand wheel that elevated the gun.8 He also controlled the coaxial machine gun when he fired via a foot switch.8
The loader was on the right side.8
The turret was cramped but the commander's cupola was 10.25" high with 6 slots around it which provided very good visibility.8 It was later replaced in the Ausf A(2) model with armored periscopes.8 Over the cupola was a ring for a MG 34 for AA defense.8 The turret had a full floor that rotated with the turret.8 Fire extinguishers would be activated in the engine compartment if temperature rose above 120° C. Power for the 8 ton turret was provided by taking power from the main shaft.
The mantlet had 2 holes, one for the coaxial machine gun and the other for the gunner's sight.
At the rear of the turret was a large round hatch that was used for loading ammunition but could also be used for escape.8
As with other German tanks the Panthers were separated into compartments.8 The forward one had the driving and transmission, in the center were the turret, and the rear was the engine.2,8
The driver sat on the left, the radio operator on the right with the hull machine gun.2,8 The radio equipment was located to the operators right.2,8 Between them was the gear box that had the final drive going to the drive sprockets on each side.2,8 The hull had a one piece glacis plate.
The driver had a vision port in front of him to see out with when the armored flap was open.8 When closed he could see out by using two episcopes that were located in the roof.8 One faced forward with the other to the left a little.8 In the Ausf G model these were replaced by a rotating periscope.8
The turret had the gunner on the left, with the commander behind him.2 The loader was on the right side.2 The gun was fired electrically by a trigger on the elevating hand wheel.2 The coaxial gun was fired by a foot switch.2 The turret had sloping sides and a rotating floor. Traversing was done by hydraulic power or by hand cranking the turret one turn of the hand wheel which only moved it 0.36°.
Steering gear and brakes were developed by MAN and operated hydraulically. Interleaved bogies sprung on torsion bars gave the Panther a smooth ride for the crew. However, these could freeze up with snow. Steering was done by hydraulic disc brakes and epicyclic gears to each track.8 The tank was driven by a front sprocket and had a idler in the rear. The main shaft was mounted in a housing that also worked 2 oil pressure pumps for steering.
A long transmission shaft ran from the engine in the rear to the front steering and the AK 7-200 gear box.4,8 This forced the turret to be up higher than normal.4 The designers thought this would help the track arrive at the drive sprocket relatively clear of mud.4
To help with traction in icy conditions, the track was fitted with non-skid ribs that were placed between the links.
The bogies were carried on double torsion bars which lay transversely inside the hull.4 Each track could be stopped separately without a loss of power.4
In the roof of the rear engine deck was a large hatch that allowed access to the engine.8 On either side were cooling fans.8 There were exhaust pipes at the rear and on some vehicles there were storage bins on each side.8
Rheinmetall-Borsig2 received a contract on July 18, 1941, to develop a gun that could penetrate 140 mm at 1,000 meters. It was also to design a turret that the gun could fit in. In early 1942 a barrel of length L/60 was tested and it almost met the specifications. A barrel length of L/70 was chosen and was promised to be delivered by June 1942. It had a spherical, single baffle muzzle brake which was later replaced by a double baffle.
The 75 mm gun had a muzzle velocity of 3,070'/936m per second.4 It could penetrate 120 mm/4.7" at 1,000 m/1,090 yards.4
Penetrate 90 mm of armor at 500 yards, 80 mm at 1,000 yards. Could knock out a T-34/76 at 875 yards, Sherman at 1,090 yards.

In January 1942 Daimler-Benz and MAN submitted designs.6
Henschel's prototype, DW 1, weighed 30 tons and was similar to the PzKpfw IV. However, it had large bogies as opposed to the smaller ones in the existing tanks. These resulted in longer life of the tires.
On April 2, 1937, the DW 2 was ordered by the Army Weapons Department. The contracts for this were issued on September 9, 1938. It had 50 mm armor and weighed 32 tons. It was to have the Maybach HL 116 which gave it a maximum speed of 25 kph. Eight prototypes were delivered at the beginning of 1940. Krupp made the first turret in 1940 as well.
The VK3001(H) was the prototype from Henschel.7,8 Next came the 4 VK 3001 (H) prototypes. Two were completed in each March and October 1941. This had medium sized bogies with 3 return rollers. It had hydraulic steering. The first 2 were converted by Rheinmetall-Borsig into self-propelled guns with 128 mm guns to attack fortifications and fight the heavy tanks that they expected Britain and USA to have. This could only carry 15 rounds. They were delivered in August 1941 and used in Russia during 1942.
The VK3001(P) was Porsche's prototype that was completed by 1941.8
Porsche was instructed at the end of 1939 to develop a heavy tank between 25 and 30 tons with the 7.5 cm KwK L/24 gun, and possibly later have the 10.5 cm KwK installed. Nicknamed the Leopard within Porsche. It had twin engines. Nibelungenwerke in St. Valentin built 2 prototypes in 1940.
When the Russian T-34/76 was first encountered near Minsk on July 2, 1941, the design program was sped up.6
In October 1941, T-34s caused heavy casualties with the 4th Panzer Division.6
In November 1941, General Guderian (commander of Panzergruppe II in Russia) wrote a report suggesting that a commission should be formed immediately to design a tank to be able to gain supremacy over Russian T-34 tanks.8 The Armaments Ministry sent a commission to the Russian front to study the T-34, and on November 15, 1941, it's initial report stated that the T-34 was superior because of sloped armor, large road wheels and tracks, and a large caliber gun.1,2
On November 25, 1941, the Armaments Ministry put out requirements to Daimler-Benz and MAN for a new tank that would have8:
The VK 3002 (VK 3002-MAN3,7) was MAN's design.8 MAN had a design ready by April 1942 and presented it to the Army Weapons Department.8 A mild steel version was ready by September 19423, and was put through trials at Nuremberg.8 A second prototype went to Kummersdorf. MAN was chosen to develop production vehicles.8
The MAN design had the turret placed towards the rear to allow for minimal overhang with the long barrel 75 mm gun.8 The suspension used interleaved road wheels with torsion bars.8
The engine for the MAN design started out as a gasoline Maybach HL 210 V-128, but this was later changed to the Maybach HL 2301 P 30 with a AK 7-200 gearbox1.
During VK 3002's (MAN) development it was unofficially known as the Panther.1 It was considered too heavy and too tall to be a medium tank to replace the PzKpfw IV. However, the design specifications were changed to 43 tons. Twenty vehicles were initially produced with 60 mm frontal armor, this was increased to 80 mm.
The Daimler-Benz version, VK 3002 (DB)7, was presented to the Waffenprüfamt 6 in April 1942.8 It had a maximum weight of 34 tons and could go 54 kph. Prototypes were tested and 200 were initially ordered but this order was withdrawn.3
The Daimler-Benz was an almost exact copy of the Russian T-34/76.1,2,3,7,8 It had a similar hull shape and the turret was placed well forward.8 The driver sat within the turret cage and drove with hydraulic steering.8 A MB507 diesel engine was installed with transmission to rear sprockets.8 The bogies were steel (saved on rubber) and suspended in pairs by leaf springs (easier to produce than torsion bars).8 Escape hatches were installed on the hull sides along with jettisonable fuel tanks in the rear.8
These 2 designs were shown to Hitler in April 1942 and he was impressed by the Daimler-Benz design, however suggesting the 75 mm L/48 be replaced by L/70 gun.2,6,8 An order for 200 were placed and production started.8 The Waffenprüfamt 6 ("Panther committee") decided on the MAN design and placed an order for 200 while they rescinded the order for the Daimler-Benz models.2,8
The prototypes were delivered in September 1942, and production started 2 months later.2,5,7 Daimler-Benz then started production, and in February and March of 1943 Henschel and Maschinenfabrik Niedersachen joined in production.2 Later in war other production (aircraft) was cut back to free up facilities to manufacture parts for Panthers.2
The initial vehicles were tested at Erlangen and Grafenwöhr, and many faults were found. With the excessive weight, the gears and shafts wore down quickly. Guderian emphasized these problems to Hitler in March 1943, telling him that the Panther's should not enter service earlier than July 1943. Despite these warnings, Hitler insisted they be used in Operation Citadel.
As of February 27, 1944, Hitler ordered that the tank only be known as Panther.2
Armor and turrets were produced by Dortmund-Hörder Hüttenverein of Dortmund, Eisenwerke Oberdonau of Linz, Ruhrstahl of Hattingen, Böhler of Kapfenberg, Bismarckhütte of Upper Silesia and Harkort-Eicken of Hagen.
Hitler wanted production to be 600 per month by Spring 1944.1,2,7 MAN was supposed to produce 250 per month.2,8 The maximum output that was ever achieved was 330 a month.

Each Panzer division was to have 1 battalion of Panther tanks and 1 battalion of PzKpfw IV tanks, however the Waffen SS Panzer divisions usually got the priority.
During 1943, panzer divisions started to sent back a battalion to be re-equipped with Panthers.1 The 1st Panzer Division was the first.1 By January 1944, 15 division had a Panther battalion.1
During the summer of 1944, 13 new battalion strong panzer brigades were formed.1
All bugs weren't worked out in early models, and many had mechanical failures.3 Many of the armored units had little confidence in the vehicles. 200/2043/2501 were introduced in July 1943 at the battle of Kursk. 160 were out of action by the end of the 1st day, and only 43 were left after 9 days. Many broke down between the Orel railheads and the front at Byelograd. Insufficient cooling caused engine fires and the gears and tracks were damaged.
Some Ausf D turrets were used in the Hitler and Gothic1 lines in Italy as defensive strong points.
During the Ardennes some were camouflaged as American M-10s.1 The commander's cupola was removed and 2 semi-circular hatch covers were installed. Sheet metal was used to give the turret, bow, and sides a similar look.1 They joined SS-Standartenführer Otto Skorzeny's 150th Panzer Brigade.1
The unit quickly lost the element of surprise and all the Panthers were knocked out.1
Ernst Barkmann was the commander of the 4th Company, 2nd SS Panzer Regiment of the 2nd SS Panzer Division, Das Reich.1 After gaining experience on the Eastern front he found himself in Normandy.1 Near St. Lo, on July 8, 1944, he destroyed his first Sherman.1 He destroyed 5, disabled 1, and destroyed an anti-tank gun four days later before being damaged himself by an anti-tank gun.1
On July 14, he was in another Panther and destroyed three more Shermans before his track was blown off by artillery.1
On July 26, back in his own Panther, he and his unit fought against Operation Cobra, the attempt at breaking out.1 His tank broke down and was damaged further by American fighter-bombers.1 He tried catching up to his company on July 27, near Le Lorey, but he encountered an American force.1 He knocked out another 9 Shermans.1 During this battle his tank's front drive sprocket was damaged, threw a track, put a hole in the hull and wounded his driver, but he still fought.1 He withdrew from the battlefield in reverse.1
Repairs were made and on July 28 he destroyed another 6 tanks.1
On the 29th he was wounded and surrounded by American forces at Gavray.1 However, while towing another disabled Panther, he was able to reach new positions.1
On August 1st his Panther was set afire when the Panther he was towing had its ammunition blow up.1 He and his crew had to walk out and he was later awarded the Knight's Cross.1
The French Army used Panthers after World War II.9
| PzKpfw V, Panther | |
|---|---|
| Crew | Commander, gunner, loader, driver, radio operator 49 |
| Physical Characteristics | |
| Weight | 100,100 lb9 45,500 kg9 |
| Length w/gun | 28' 4.5", 29' 0.75"9 8.86 m9 |
| Length w/o gun | 21' 11.5" |
| Height | 9' 4", 10' 2"9 3.1 m9 |
| Width | 10' 9.5", 11' 3"9 3.43 m9 |
| Width over tracks | |
| Ground clearance | |
| Ground contact length | |
| Ground pressure | 12.5 psi |
| Turret ring diameter | |
| Armament | |
| Main | 1: 75 mm9 75 mm KwK 42 L/70 |
| Secondary | 92 mm Nahverteidigungswaffe (grenade launcher) |
| MG | |
| MG - hull | 1: 7.92 mm MG349 |
| MG - coaxial | 1: 7.92 mm MG349 |
| MG - antiaircraft | 1: 7.92 mm MG349 |
| Side arms | |
| Quantity | |
| Main | |
| Secondary | |
| MG | 4,200 |
| Side arms | |
| Armor Thickness (mm) | 30 - 1109, 808 |
| Hull Front, Upper | |
| Hull Front, Lower | |
| Hull Sides, Upper | |
| Hull Sides, Lower | |
| Hull Rear | |
| Hull Top | |
| Hull Bottom | |
| Turret Front | |
| Turret Sides | |
| Turret Rear | |
| Turret Top | |
| Engine (Make / Model) | Maybach HL 2309 |
| Bore / stroke | |
| Cooling | |
| Cylinders | 129 |
| Capacity | |
| Net HP | 7009 |
| Power to weight ratio | |
| Compression ratio | |
| Transmission (Type) | AK 7-2008 Synchromesh8 7 forward, 1 reverse8 |
| Steering | Argus hydraulic disc brakes8 Epicyclic gears8 |
| Steering ratio | |
| Starter | |
| Electrical system | |
| Ignition | |
| Fuel (Type) | Diesel9 |
| Octane | |
| Quantity | 160 gallons |
| Road consumption | |
| Cross country consumption | |
| Performance | |
| Traverse | 360°, hydraulic or hand8, 360°/18 seconds |
| Speed - Road | 29 mph9 46 kph9 |
| Speed - Cross Country | 15 mph |
| Range - Road | 110 miles9 177 km9 |
| Range - Cross Country | |
| Turning radius | 16' 5" |
| Elevation limits | -9° to +20° |
| Fording depth | 5' 7"9, 6' 1.7 m9 |
| Trench crossing | 6' 3"9, 10' 1.91 m9 |
| Vertical obstacle | 3'9 0.91 m9 |
| Climbing ability | |
| Suspension (Type) | Torsion bar8 |
| Wheels each side | 88 |
| Return rollers each side | 0 |
| Tracks (Type) | |
| Length | |
| Width | 2' 2" |
| Diameter | |
| Number of links | |
| Pitch | |
| Tire tread | Dished with solid rubber. Ausf G were all steel. |
| Track centers/tread |
Sources: