T-34-85 tank, the final modification of the T-34 tank.
The new, spacious, three-seat gun turret is designed using structural and technological solutions implemented in the experimental T-43 tank. The installation of a more powerful 85-mm gun, combined with a number of design improvements, significantly increased the combat effectiveness of the T-34-85 tank, compared to its predecessor, the T-34-76. The new turret provided an increase in the volume of the combat compartment, the possibility of placing a more powerful 85-mm gun, a better distribution of functions between crew members and its security. As a combat machine T-34-85 was a classic example of the combination of constructive and technological solutions, all to ensure better compliance with the performance requirements of "cruising" tank in a "Critical period" of world war II.
In the T-34-85 tank, the quality and reliability of components and assemblies reached the highest level, while the design and layout retained exceptional manufacturability, high maintainability, rapid recovery and commissioning of tanks damaged during combat operations.
Serial tanks T-34-85, (like their predecessors, T-34-76), built by different factories, with absolute unification of components and parts, at the same time had minor, individual — factory, design differences due to local technological features of production. In particular: various options for mounting spare fuel tanks on the sides of the hull; various options for protective straps of the turret shoulder strap; in the undercarriage, support rollers were used only with rubber bandages (the shortage of rubber was eliminated, thanks to supplies from the United States), both stamped and cast, with developed fins and facilitating holes; various versions of tracked tracks; gun turrets differed in the configuration and location of welded and cast seams, the number and location of viewing devices, ventilation fungi, mounting units; handrail brackets; the location and design of the commander's turret.