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Zbrojovka ZB vz. 37 (ZB-53)


Heavy Machine Gun (HMG)


Czechoslovakia | 1936



"The ZB vz. 37 Heavy Machine Gun appeared in 1936 as an improved form of the earlier vz. 35 model."

Performance
Performance specifications presented assume optimal operating conditions for the Zbrojovka ZB vz. 37 (ZB-53). Information presented is strictly for general reference and should not be misconstrued as useful for hardware restoration or operation.
650
Rounds-Per-Minute
Rate-of-Fire
2,600 ft/sec
792 m/sec
Muzzle Velocity
Physical
The physical qualities of the Zbrojovka ZB vz. 37 (ZB-53). Information presented is strictly for general reference and should not be misconstrued as useful for hardware restoration or operation.
1,105 mm
43.50 in
O/A Length
678 mm
26.69 in
Barrel Length
41.01 lb
18.60 kg
Weight
Gas-Operated; Full-Automatic Only; Belt-Fed
Action
7.92x57mm Mauser
Caliber(s)
100- or 200-round metal link belt.
Feed
Iron Front and Rear.
Sights
Variants
Notable series variants as part of the Zbrojovka ZB vz. 37 (ZB-53) Heavy Machine Gun (HMG) family line.
vz. 37 - Base Series Designation
vz. 37 (ZB-53) - Infantry model with spade grips and heavy-duty tripod; early models with ZB308 tripod, later ones with ZB309 tripod.
vz. 37UV - Vehicle-mounted weapon; shoulder stock and pistol grip fitted.
vz. 37O - Fortification defense model; pintle mounting support.
Schwere Maschinengewehre 37(t) - German Army designation.
"BESA" - British Army designation; vehicle machine gun; local production and variant.


Authored By: Staff Writer | Last Edited: 09/15/2016 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.

In an effort to find a more suitable and reliable Heavy Machine Gun (HMG) design chambered to effectively fire the 7.92mm cartridge, the Czechs worked through progressive machine gun developments in the decade leading up to World War 2 (1939-1945). There was the ZB vz. 50, which failed to produce the desired results, followed by the ZB vz. 52 (the weapons were recoil-operated and gas-operated, respectively). Trials of the ZB vz. 53 were had in 1934 which incorporated some improvements to the design and eventually led to the related ZB vz. 35 being selected for formal military service. Limited circulation followed.

From this work arose a new, improved design under the designation of ZB vz. 37 in 1936. Initial forms were delivered with a tripod support base with spade grips for infantry-level service. Then followed a vehicle-mounted weapon as the ZB vz. 37UV and this carried a full shoulder stock as well as pistol grip. The ZB vz. 37O was the third of three versions generated and this one intended for defense of fortified positions and, thusly, had a connection point for pintle mounting.

At its core, the weapon was an air-cooled, full-automatic-only system with gas-operation. The locking system relied on a tilting block arrangement. Chambering was for the 7.92x57mm Mauser rimless cartridge fed from a 100- or 200-count metal-link belt. Cyclic rate-of-fire reached up to 750 rounds-per-minute while muzzle velocity was rated at 2,600 feet-per-second - giving good penetration at range. Overall length was 1,105mm with a barrel measuring 678mm long. A conical flash hider was fitted over the muzzle and iron sights were installed along the top of the weapon forward and aft. Cooling fins detailed the barrel section as did a slotted forend.

The ZB vz. 37 was in practical use in the lead-up to World War 2 and Romania became one of the largest recipients of the Czech development followed by orders from China and Iran. Britain also moved on the product and eventually adopted it (through local production) as the classic "BESA" vehicle machine gun series. Other operators were seen in Afghanistan, Chile, Peru, Slovakia and Yugoslavia.

With the German occupation of Czechoslovakia, the gun-making facilities at Brno fell under German control so this meant that the machine gun was taken into service by the conquerors and appropriately re-designated to "Schwere Maschinengewehre 37(t)". In 1941, manufacturing of the weapon was relocated to Vsetin, however, the German need for their own standardized guns was such that Czech shops were forced to switch over to producing German products instead - this ultimately reduced production of the ZB vz. 37 series before the end of the war.

The weapon saw post-war service and large-scale production overall. A more simplified tripod was eventually introduced which replaced the original version - deemed unnecessarily complicated.

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Operators
Global customers who have evaluated and/or operated the Zbrojovka ZB vz. 37 (ZB-53). Nations are displayed by flag, each linked to their respective national small arms listing.

Contractor(s): Zbrojovka Brno - Czechoslovakia
National flag of Afghanistan National flag of Chile National flag of China National flag of Czechia National flag of modern Germany National flag of Nazi Germany National flag of Iran National flag of Peru National flag of Romania National flag of Slovakia National flag of the United Kingdom National flag of Vietnam National flag of Yugoslavia

[ Afghanistan; Chile; China; Czechoslovakia; Iran; Nazi Germany; Peru; Romania; Slovakia; United Kingdom (BESA); Vietnam; Yugoslavia ]
Going Further...
The Zbrojovka ZB vz. 37 (ZB-53) Heavy Machine Gun (HMG) appears in the following collections:
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