Armored Self-propelled 81mm Mortar Carrier M125A21-2

M125A2: General
Manufacturer FMC Corp. Crew 6 men
M125A2: Dimensions
Combat weight 25,410lbs
11,530kg
Height over MG 99.25"
252.1cm
Length 191.5"
486.4cm
Width 105.75"
268.60cm
Tread 85.0"
216cm
Ground clearance 17.1"
43.4cm
Ground pressure, zero penetration 8.1psi
.57kg/cm²
M125A2: Armament
Type Mount Ammunition Traverse Elevation
81mm Mortar M252 Passenger compartment 114 rounds 360°
(manual)
Manual
.50cal M2HB MG Flexible on cupola mount 600 rounds 360°
(manual)
Manual
Night vision
Infrared periscope M19 for driver
M125A2: Armor
Assembly
Welding
Hull
Rolled 5083/5086 H32 aluminum armor
Location Thickness Angle from vertical
Upper front 1.5"
3.8cm
45°
Lower front 1.5"
3.8cm
30°
Upper sides 1.75"
4.45cm
Lower sides 1.25"
3.18cm
Rear 1.5"
3.8cm
Ramp 1.5"
3.8cm
Top 1.5"
3.8cm
90°
Floor 1.125"
2.858cm
90°
M125A2: Automotive
Engine General Motors 6V53; 6 cylinder, 2 cycle, vee diesel
Horsepower Gross: 212@2800rpm Torque Gross: 492 ft-lb@1300rpm Fuel capacity 95gal
360L
Transmission Allison TX-100, 3 ranges forward, 1 reverse
Steering DS200 controlled differential, steering levers
Brakes Differential band
M125A2: Suspension
Type Road wheels Track return rollers
Torsion bar 5 individually sprung dual/track Flat track
Drive sprockets Idlers Shock absorbers
10-tooth front drive Dual adjustable at rear of track On first, second, and last road wheels/track
M125A2: Track
T130E1
Center guide, single pin, steel with detachable rubber pad
Width 15"
38cm
Pitch 6"
15cm
Shoes/track Left side: 63
Right side: 64
Ground contact length 105"
267cm
T150
Center guide, double pin, steel with chevron rubber pad
Width 14.81"
37.62cm
Pitch 6"
15cm
Shoes/track Left side: 63
Right side: 64
Ground contact length 105"
267cm
M125A2: Performance
Max level road speed 40mph
64kph
Max water speed 3.6mph
5.8kph
Max trench 66"
170cm
Max grade 60%
Max sideslope 30% Max vertical obstacle 24"
61cm
Min turning diameter 26'
7.9m
Max fording depth Floats
Cruising range ~300mi, roads
~480km, roads

The M125A1 was based on the the M113A1 APC, and shared the same modifications as the M106A1 107mm self-propelled mortar since the 81mm and 107mm mortars were interchangeable. The M125A2 was based on the M113A2. The M125, based on the M113, was not released for production.

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References

  1. Hunnicutt, R.P. Bradley: A History of American Fighting and Support Vehicles. Navato, CA: Presidio Press, 1999. Reprinted with permission from Bradley, R.P. Hunnicutt ©1999, available from Presidio Press, 505B San Martin Drive, Suite 160, Navato, CA 94945.
  2. Crismon, Fred W. U.S. Military Tracked Vehicles. Osceola, WI: Motorbooks International, 1992.

Last updated 19 May 2001.
Questions? Comments? Corrections? Email me
© Copyright 2001 Chris Conners