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"The New Juki" from Intelligence Bulletin, June 1945

[June 1945 Intelligence Bulletin Cover]  
The following intelligence report on the Japanese Type 01 heavy machine gun is taken from the June 1945 issue of the Intelligence Bulletin.

[DISCLAIMER: The following text is taken from the U.S. War Department Intelligence Bulletin publication. As with all wartime intelligence information, data may be incomplete or inaccurate. No attempt has been made to update or correct the text. Any views or opinions expressed do not necessarily represent those of the website.]

Weight Reduced by 52 Pounds

Soldiers who are familiar with the Juki—the rather cumbersome Model 92 (1932) standard heavy machine gun—will be interested to learn that the Japanese have produced a new, handier model of their heavy machine gun. The new weapon is designated the Model 01 (1941).

The outstanding features of the Model 01 are its removable barrel and the reduction made in weight over the Juki, for the Model 01 weighs nearly 50 percent less than the Model 92. The reduction in weight has been accomplished by a lightening of the weight of most component parts. In turn, reductions in the moving parts has produced a somewhat higher rate of fire than the Model 92's, but since the Model 01's barrel is shorter, it is believed that the newer gun has less range than the Model 92, which is practically a copy of the Model 3 (1914) Hotchkiss-type heavy machine gun.

[WWII Japanese Model 01 (1941) Heavy Machine Gun]
The new Model 01 (1941) Japanese heavy machine gun.

The new gun is gas-operated and air-cooled, but dispenses with the very heavy barrel jacket which permits the Model 92 to maintain a steady rate of fire without excessive heating. The introduction of the removable barrel is supposed to compensate for the loss of barrel jacket. However, it is estimated that trained crews should require approximately 1 minute to effect the barrel change, for the barrel lock is definitely not of the quick-release type.

Though the Juki takes both rimmed and rimless caliber 7.7-mm ammunition, the new Model 01 (for reasons best known to the Japanese) takes only rimless ammunition. This ammunition is fed from the left side in the usual 30-round metal strips. Fire is controlled by a thumbpiece-trigger, but the thumbpiece does not also serve as the safety. The safety device consists of a lever on the left side of the receiver.

The Model 01's tripod, though similar to that of its predecessor, is generally improved. It shows that consideration has been given to carefully calibrated indirect fire along fixed lines, if not for accurate searching fire. A telescopic sight may be fitted.

These figures compare the Model 01 and the Model 92:

          Model 01        Model 92
Weight of tripod 36.3 pounds 61 pounds
Weight of gun 33.6 pounds 61 pounds
Total weight 69.9 pounds 122 pounds
Length without flash hider 38 inches 45 inches
Length of barrel 23.9 inches 29.5 inches
Total traverse 45 degrees 33.5 degrees

Only one sample of a Model 01 has so far been encountered. This one was found on Luzon. Though it was numbered "Serial 1", the weapon was a production job, and not just an experimental item hand-made by some arsenal. It is not known whether the Japanese have produced the Model 01 in any quantity, or whether they consider it superior enough to the Juki to warrant replacement of the latter in spite of deterioration of production facilities and of increasing need for artillery, antitank, antiaircraft, and armored vehicles.


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