The chassis of the PzKpfw IV was also used for other, more specialized vehicles including the Jagdpanzer IV tank destroyer, self-propelled antiaircraft gun systems of various types (including one with four 20-mm cannon and another with one 37-mm cannon), self-propelled guns, armoured recovery vehicles and bridgelayers to name but a few.
A typical PzKpfw IV was the PzKpfw IV Ausf F2, which had a hull and turret of all-welded steel armour construction, the former having a maximum thickness of 60mm (2.36 in) and the latter of 50 mm (1.47 in), The driver was seated at the front of the hull on the left, with the bow machine-gunner/ radio operator to his right. The commander, gunner and loader were seated in the turret in the centre of the hull, with an entrance hatch on each side of the turret and a cupola for the tank commander. The engine was at the rear of the hull and coupled to a manual transmission with six forward and one reverse gears. Main armament comprised a long barrelled 75-mm (2,95in) KwK gun fitted with a muzzle brake and which could fire a variety of ammunition including HEAT, smoke, APCR, APCBC and high explosive, the last being used in the infantry support role. A 7.92-mm (0.31-in) MG34 machine-gun was mounted co-axial with and to the right of the main armament, while a similar weapon was mounted in the bow. Totals of 87 rounds of 75-mm (2,95-in) and 3,192 rounds of 7.92-mm (0,31-in) machinegun ammunition were carried. Turret traverse was powered through 360∞, though manual controls were provided for emergency use.
The additional armour and heavier armament pushed up the weight until in the final production version it reached 25 tonnes, but the PzKpfw IV still had a respectable power-toweight ratio and therefore good mobility characteristics.
Specification PzKpfw IV Ausf H Crew: 5 Weight: 25000 kg (55,115 lb) Dimensions: length (including armament) 7,02 m (23 ft 0 in); length (hull) 5.89 m (19 ft 4 in); width 3.29 m (10 ft 9.5 in); height 2.68 m (8 ft 9.5 in) Powerplant: one Maybach HL 120 TRM 12-cylinder petrol engine developing 300 hp (224 kW) Performance: maximum road speed 38 km/h (24 mph); maximum road range 200 km (125 miles); fording 1.0m (3 ft 3 in); gradient 60 per cent; vertical obstacle 0.6 m (2 ft 0 in); trench 2,20 m (7 ft 3 in)