Berezin B-20
The Berezin B-20 (Березин Б-20) was a 20 mm caliber autocannon used by Soviet aircraft in World War II.
Also recorded as B-20 · Berezin UB-20
Berezin B-20
Vitaly V. Kuzmin · CC BY-SA 4.0
- Field
- aircraft artillery · autocannon
- Region
- Soviet Union
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Documentary summary
The Berezin B-20 (Березин Б-20) was a 20 mm caliber autocannon used by Soviet aircraft in World War II.
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original value insufficient · checked 25 September 2026
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Authority files
wikidata · Q819083 · wikipedia · Berezin B-20
In this article
Development
Development
The B-20 was created by Mikhail Yevgenyevich Berezin in 1944 by converting his 12.7 mm Berezin UB machine gun to use the 20 mm rounds used by the ShVAK cannon. No other changes were made to the weapon which was pneumatically or mechanically charged and was available in both synchronized and unsynchronized versions. In 1946, an electrically-fired version was created for the turrets of the Tupolev Tu-4 bomber until the Nudelman-Rikhter NR-23 cannon became available. The B-20 was a welcome replacement for the ShVAK because it was significantly lighter - 25 kg (55 lb) to the 40 kg (80 lb) ShVAK - without sacrificing rate of fire or muzzle velocity.
Specifications
Specifications
Ammunition: 20×99mm Empty weight: 25 kg (55 lbs) Muzzle velocity: 750–770 m/s (2,460-2,525 ft/s) Rate of fire: 800 rounds/min (600 synchronized) One-second burst-mass: Unsynchronized, 1.27 kg (2.8 lbs); Synchronized, 0.95 kg (2.1 lbs)
Production
Production
The Soviet archives register the following production numbers by year: 1944 — 2,275 1945 — 7,240 1946 — 440 1947 — 780 1948 — 1,686 1949 — 2,931
Places
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Places
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Soviet Union
Country
Berezin B-20 is associated with Soviet Union.
Country
Notes from the source article
Cited by Wikipedia
Notes from the source article
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- 1.Shirokograd, p 119
References
Citations
References
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The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 14 August 2026.
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