Type 99 Mark 1 cannon (Japanese license-built Oerlikon FF)
Type
Autocannon
Place of origin
Switzerland
Service history
In service
1940–
Used by
Various
Wars
World War II
Production history
Designer
Reinhold Becker
Designed
1935
Manufacturer
Oerlikon
Variants
Type 99 Mark 1 cannon MG FF cannon
Specifications
Mass
25 kg (55 lb) [1]
Barrel length
L/38: 760 mm (30 in)[1]
Shell
20mm×72RB[1]
Caliber
20 mm (0.787inch)
Barrels
Single barrel (progressive RH parabolic twist, 9 grooves)
Action
API blowback
Rate of fire
520 rounds per minute[1]
Muzzle velocity
600 m/s (2,000 ft/s)[1]
Feed system
Cylindrical magazine holding 60 rounds, Later adjusted to be a belt fed gun
The FF were a series of 20mm autocannon introduced by Oerlikon in the late 1920s. The name comes from the German term Flügel Fest, meaning wing mounted, fixed, being one of the first 20mm guns to be small and light enough to fit into a fighter aircraft's wing. The FF series inspired many 20mm cannon used in World War II, including the Hispano-Suiza HS.404 (adopted by the French, British and U.S. forces), the German MG FF, and the Japanese IJNAS's Type 99 cannon.
^ abcdeWilliams, Anthony G. (July 2013). "OF OERLIKONS AND OTHER THINGS……". Retrieved November 8, 2022.
The FF were a series of 20mm autocannon introduced by Oerlikon in the late 1920s. The name comes from the German term Flügel Fest, meaning wing mounted...
The OerlikonFF was installed as armament on some fighters of the 1930s, such as the Polish PZL P.24G. Locally produced derivatives of the Oerlikon cannon...
Swiss OerlikonFF F cannon (its FF suffix indicating Flügel Fest, for a fixed-mount, wing location from the Swiss original), with the OerlikonFF design...
gun and Type 99 Mark 2 machine gun were Japanese versions of the OerlikonFF and Oerlikon FFL autocannons respectively. They were adopted by the Imperial...
autocannon used during World War II. It was a scaled-up version of the 20mm OerlikonFF cannon. Caliber: 30 mm (1.2 in) Ammunition: 30 x 92RB Weight: 51 kg (112 lb)...
OC Oerlikon is a listed technology group headquartered in Pfäffikon (Schwyz), Switzerland. The name "Oerlikon" (or "œrlikon", as the company styles itself...
forming the base is larger than that of the cartridge case itself. RB e.g. Oerlikon 20×110RB: rebated rim, one where the rim is a smaller diameter than the...
Cold War 20 Internal Oerlikon S Switzerland World War II 20 Internal OerlikonFF Switzerland World War II 20 Internal Oerlikon KAE Switzerland Modern...
sacrifice in performance. As a stop-gap measure, the MG FF cannon was developed from the OerlikonFF and put in widespread use, but its performance was lackluster...
War II 20 mm FlaK 30/38 cannon 20 mm MG FF cannon—derivative in 1936 by Ikaria Werke Berlin of Swiss OerlikonFF 20 mm MG 151 cannon/20 20 mm MG 213 cannon—developed...
Solothurn 24 X 138 TB41 2 cm Flakvierling 38 2 cm FLAK 30 Solothurn ST-5 OerlikonFFOerlikon 20 mm Renault FT ~5 Vickers Commercial light tank LT vz 38 ~24 Vickers...
collapse of SEMAG, Oerlikon took over the SEMAG assets in 1924, marketing improved versions as the Oerlikon F, Oerlikon L, and Oerlikon S. Bolivia bought...
(Browning with Hotchkiss 13.2mm cartridge) Type 99 cannon 20 mm cannon (OerlikonFF) Type 2 30 mm cannon Type 5 30 mm cannon Type 92 7.7 mm machine gun (British...
Ikaria in Germany for a supply of 20 mm MG FF/M cannon. These were a licensed version of the Swiss OerlikonFF, which had been in use in various German...
Swiss Oerlikon Contraves firm in 1924, with the Third Reich's Ikaria-Werke firm of Berlin using Oerlikon design patents in creating the MG FF wingmount...
forward firing 20 mm Hispano Suiza HS.404 cannon and a rear-firing 20 mm OerlikonFF for defence. It was also envisaged that the aircraft would have three...
Global Information