pzgr40
Well-Known Member
Cutaway model of a Russian TM-57 anti tank blast mine. The-57 was the successor of the TM-46 anti-tank mine and the precursor of the TM-62 anti-tank mine. The TM-57 had a larger explosive contant than the TM-46 mine and had an improved fuze, allowing for mechanical mine laying. The mine is made of sheet metal and has a stepped pressure plate that allows the use of the MVZ-57 pressure fuze, either the MVSh-57 tilt fuze. A secondary well is placed in the side of the mine, allowing for a MUV of VPF pull fuze, to booby trap the mine for anti-lift purpose. A central concave well is placed in the center of the explosive charge which functions as the booster charge. A tin with a booster charge is also placed around the fuze well of the secondary fuze well (pict 08).
The base plate of the mine houses two filler plugs and has a collapsing steel carrying handle.
The mine has three possible fillings ; TNT, TGA (RDX?TNT/Aluminium), either MS (RDX/TNT/Aluminium/Wax).
As the TM-57 mine is fully metal made, it is easily detectable.
The MVZ-57 pressure fuze (pict 02,03,04) is screwd in the top of the mine and has the detonator and spring loaded break wire firing pin mechanism placed in horizontal position when unarmed. By pressing the knob on top of the fuze, a delay gear (25 to 30 seconds) runs down, allowing the assembly to rotate from horizontal to vertical, arming the mine. When pressure is applied, the stepped pressure plate will collapse up to the moment the break wire in the firing pin mechanism is sheared off, launching the firing pin into the detonator, detonating the mine. The MVZ-57 fuze allows for mechanical mine laying with the GMZ and PMR minelayer vehicles, pressing the knob on top of the mine just prior to sliding the mine off the ramp, allowing the mine to be buried before fully arming.
Diameter fuze body : 93 mm
Height fuze Body : 35 mm
The MVSh-57 tilt fuze (pict 05, 06,07) is screwed into the top of the mine, and has two slots in the corrugated outer ring in which a key fits to tighten the fuze. The fuze consists of a fuze body housing a spring loaded firing pin, fixated by two steel balls that fall in a groove in the top of the firing pin,kept in inward position by a steel tube that pushed the steel balls inward. A long thin steel rod runs through three steel cylinders and is screwed into the angled pressure rod on top of the fuze. An aluminium tube is placed around the cylinders and crimped around the fuze body on the lower side, and crimped over the stem of the pressure rod in top.
When the pressure rod with the tube is bend appr. 25 degrees, the aluminium pipe will bend, tilting the three cylindrs over toone side. This will lengthen the central line, pulling the thin steel rod upwards, pulling the housing with the two balls upward, now allowing the balls to move outward, releasing the firing pin which moves into the MD-10 detonator, detonating the mine.
The tilt rod is to short for belly attack of tanks and vehicles, but enshures the mine will function in soft ground or sand.
Diameter fuze body : 86 mm
Length fuze (With MD-10 detonator) : 210 mm
Weight of the mine : 8,1 Kg (fuzed with MVZ5-57)
Weight explosive charge : 7,5 kg
Diameter mine body : 313 mm
Height mine body : 95mm
Height with MVZ-57 fuze : 119 mm
Height with MVSh-57 fuze : 260 mm
Operating pressure : MVZ-57 minimal 120 kg, MVSh-57 minimal 21 kg tilt force.
The Tm-57 is found in the following countries:
Afghanistan, Angola, Azarbejan, Cambodje, Chad, Chechnya, Djibouti, Eritrea, Ethiopia, Iraq, North Korea, Kuwait, Lebanon, Mozambique, Namibia, Nicaragua, Rwanda, Somalia, Sudan, Ukraine, Vietnam, Western Sahara, Zimbabwe.
Regards, DJH.
The base plate of the mine houses two filler plugs and has a collapsing steel carrying handle.
The mine has three possible fillings ; TNT, TGA (RDX?TNT/Aluminium), either MS (RDX/TNT/Aluminium/Wax).
As the TM-57 mine is fully metal made, it is easily detectable.
The MVZ-57 pressure fuze (pict 02,03,04) is screwd in the top of the mine and has the detonator and spring loaded break wire firing pin mechanism placed in horizontal position when unarmed. By pressing the knob on top of the fuze, a delay gear (25 to 30 seconds) runs down, allowing the assembly to rotate from horizontal to vertical, arming the mine. When pressure is applied, the stepped pressure plate will collapse up to the moment the break wire in the firing pin mechanism is sheared off, launching the firing pin into the detonator, detonating the mine. The MVZ-57 fuze allows for mechanical mine laying with the GMZ and PMR minelayer vehicles, pressing the knob on top of the mine just prior to sliding the mine off the ramp, allowing the mine to be buried before fully arming.
Diameter fuze body : 93 mm
Height fuze Body : 35 mm
The MVSh-57 tilt fuze (pict 05, 06,07) is screwed into the top of the mine, and has two slots in the corrugated outer ring in which a key fits to tighten the fuze. The fuze consists of a fuze body housing a spring loaded firing pin, fixated by two steel balls that fall in a groove in the top of the firing pin,kept in inward position by a steel tube that pushed the steel balls inward. A long thin steel rod runs through three steel cylinders and is screwed into the angled pressure rod on top of the fuze. An aluminium tube is placed around the cylinders and crimped around the fuze body on the lower side, and crimped over the stem of the pressure rod in top.
When the pressure rod with the tube is bend appr. 25 degrees, the aluminium pipe will bend, tilting the three cylindrs over toone side. This will lengthen the central line, pulling the thin steel rod upwards, pulling the housing with the two balls upward, now allowing the balls to move outward, releasing the firing pin which moves into the MD-10 detonator, detonating the mine.
The tilt rod is to short for belly attack of tanks and vehicles, but enshures the mine will function in soft ground or sand.
Diameter fuze body : 86 mm
Length fuze (With MD-10 detonator) : 210 mm
Weight of the mine : 8,1 Kg (fuzed with MVZ5-57)
Weight explosive charge : 7,5 kg
Diameter mine body : 313 mm
Height mine body : 95mm
Height with MVZ-57 fuze : 119 mm
Height with MVSh-57 fuze : 260 mm
Operating pressure : MVZ-57 minimal 120 kg, MVSh-57 minimal 21 kg tilt force.
The Tm-57 is found in the following countries:
Afghanistan, Angola, Azarbejan, Cambodje, Chad, Chechnya, Djibouti, Eritrea, Ethiopia, Iraq, North Korea, Kuwait, Lebanon, Mozambique, Namibia, Nicaragua, Rwanda, Somalia, Sudan, Ukraine, Vietnam, Western Sahara, Zimbabwe.
Regards, DJH.
Attachments
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01 - TM-57 with Mvz-57 pressure fuze.jpg -
02 - Cutaway TM-57 with Mvz-57 pressure fuze.jpg -
03 - Cutaway TM-57 with Mvz-57 pressure fuze-2.jpg -
04 - Mvz-57 pressure fuze unarmed.jpg -
05 - TM-57 with Mvsh-57 tilt fuze.jpg -
06 - Cutaway TM-57 with Mvsh-57 tilt fuze.jpg -
07 - Mvsh-57 tilt fuze.jpg -
08 - Muv fuze in secondary well.jpg