SU-85

SU-85
SU-85 tank destroyer in Polish Army Museum.
TypeSelf-propelled anti-tank gun
Place of originSoviet Union
Service history
In service1943–1950s (USSR)
WarsWorld War II
Production history
DesignerLew S. Trojanow
Designed1943
Produced1943–1944
No. built2,650
VariantsSee Variants section
Specifications
Mass29.6 tonnes (65,256 lbs)
Length8.15 m (26 ft 9 in) overall
6.10 m (20 ft) hull only
Width3.00 m (9 ft 10 in)
Height2.45 m (8 ft)
Crew4 (commander, driver, gunner, loader)

Armor45 mm(1.77 in)
Main
armament
85 mm (3.34 in) D-5T gun
Secondary
armament
none
EngineKharkiv model V-2 V-12 diesel engine
493 hp (500 PS, 368 kW)
Power/weight16.7 hp/tonne (12.43 kW/tonne)
SuspensionChristie
Ground clearance0.40 m
Fuel capacity460 L
810 L - 900 L (with additional fuel tanks)
Operational
range
Road:
280 km (170 mi)
400 km (250 mi) (with additional fuel tanks)
Cross-country:
140 km (87 mi)
200 km (120 mi) (with additional fuel tanks)
Maximum speed55 km/h (34 mph) (road)

The SU-85 (Samokhodnaya ustanovka 85) was a Soviet self-propelled gun used during World War II, based on the chassis of the T-34 medium tank. Earlier Soviet self-propelled guns were meant to serve as either assault guns, such as the SU-122, or as tank destroyers; the SU-85 fell into the latter category. As with the other AFVs in the SU series, the designation "85" refers to the vehicle's main armament, the 85 mm D-5T gun.