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“Shilka” – anti-aircraft self-propelled gun, the serial production started in 1964, is armed quad 23-mm automatic cannon. Rate setting – 56 rounds per second. Induced on the target can be manually, semi-automatically or automatically. In automatic and semi-automatic modes for normal use radar.

Designed for direct cover for ground troops and destroy air targets at ranges of up to 2500 m and 1500 m altitude, flying at a speed of 450 m / s, and the ground (surface) targets at ranges up to 2000 meters away, with a short stop in movement.

Was evaluated as a potential enemy air defense systems, which pose a serious threat to low-flying targets. It is now considered obsolete, mainly because of the characteristics and capabilities of its radar and lack of effective range of fire at air targets. However, at present, is in service with the armies of Russia, Ukraine and others. Also been successfully used in local conflicts to destroy ground targets. Named after the river Shilka, left prtitoka Cupid.
The ZSU-23-4 “Shilka” is a lightly armored, self-propelled, radar guided anti-aircraft weapon system (SPAAG). The acronym “ZSU” stands for Zenitnaya Samokhodnaya Ustanovka (Russian: Зенитная Самоходная Установка), meaning “anti-aircraft self-propelled mount”; the “23″ signifies the bore diameter in millimeters; the “4″ signifies the number of gun barrels. It is named after the Russian Shilka River. Afghan soldiers nicknamed it (sewing machine) due to the sound of firing guns and because of the similarity of the name “Shilka” to the Russian word “шить” (Russian pronunciation: [ʂitʲ], meaning “to sew”). It is also referred to by its nickname of “Zeus.”
Type Self-propelled anti-aircraft gun
Place of origin Soviet Union
Service history
In service 1962–present
Used by See Operators
Wars See Combat history
Production history
Designed 1957–1962
Manufacturer Mytishchi Engineering Works (MMZ)
Produced 1964–1982
Number built About 6,500[1]
Specifications
Weight 19 tonnes[2][3]
Length 6.535 m[3]
Width 3.125 m[3]
Height 3.572 m (3.572 m with elevated radar)[2][4]
Crew 4 (commander, driver, gunner, radar operator)
Armor welded steel, 9.2 mm turret, up to 15 mm hull[5]
Main
armament 4 × 23 mm 2A7 autocannons (AZP-23 “Amur” quad automatic anti-aircraft gun), ammunition 2,000 rounds
Engine V-6R, 8-cylinder 6-stroke airless-injection water-cooled 20 litre diesel
280 hp (209 kW) at 2,000 rpm[6]
Power/weight 14.7 hp/tonne (11.0 kW/tonne)
Suspension individual torsion bar with hydraulic shock absorbers of 1st, 5th left and 6th right road wheels
Ground clearance 375 mm
Fuel capacity 515
Operational
range 450 km (road), 300 km (off-road)
Speed 50 km/h (road), 30 km/h (off-road)