OFZ-2M is a mechanical, nose, point-detonating fuze with selectable super-quick or delayed action. The fuze has highly sensitive impact mechanism and functions on solid ground, marshy ground and snow.
The fuze completes High-Explosive, Incendiary and Smoke mortar bombs of the following caliber:
· 107 mm
· 120 mm
· 160 mm
The fuze has two operation modes, which are selectable, by built-in setter and wrench:
position “O” for SQ action
position “З” for delayed action
Before firing the Safety and Arm device prevents the ignition primer from positioning into the fire train. Even in case of unintentional ignition of the primer, no transfer of the firing pulse to the fire train can occur.
The fuze is armed within 5 to 20 m from muzzle. At firing the set-back forces arm the fuze, fixing the elements of the fire train in one line.
Upon impact the fuze provides SQ or delayed action of 0.006 to 0.015 s.
The fuze functions under the impact and inertia forces. The inertia device ensures ignition not only upon impact on solid ground, but also on snow or marshy ground.
|BASIC CHARACTERISTICS:||– – –|
|Action:||Point-Detonating Super Quick or Delayed|
|Arming:||By set-back and rotational forces|
|Muzzle Safety Distance:||5 meters|
|Time of Delay:||0.006 to 0.015 seconds|
|Operational Temperature Range for firing:||-40 to +50°C|
|Operational Temperature Range for storing:||-40 to +50°C|
|Shelf Life:||15 years|
|TECHNICAL DATA:||– – –|
|Length of Fuze (max):||105.71 mm|
|Visible Length (max):||58.90 mm|
|Intrusion Length (max):||46.80 mm|
|External Diameter (max):||40 mm|
|Weight of Fuze:||477 grams|
|Type of Booster:||Tetryl|
|Weight of Booster:||12.5 gramms|
|Thread Size:||Spec. 36.18 x 10tpi|
|PACKING:||– – –|
|Number of Fuzes in one Case:||64 fuzes in 4 metal air-tight sealed box in a wooden case|
|Case Dimensions:||520x500x170 mm.|
|Case Gross Weight:||45 kg.|
|Case Volume:||0.045 cubic meters|