TECHNICAL SPECIFICATIONS


1. BALLISTIC

 

Caliber

122 mm

Initial velocity

 

Fragmentation HE projectile (full charge)

690 m/s

Fragmentation HE projectile (reduced charge, variable)

276-565 m/s

Hollow-charge projectile BP1

740 m/s

Maximum pressure of powder gases

2500 kg-force/cm2

Maximum fire range

22 000 m

Weight of the fragmentation HE projectile

21,76 kg

Weight of the hollow-charge projectile BP1

14,08 kg

Weight of the charge (full)

3,800 kg

2. DESIGN

 

Length of the barrel with the muzzle brake

4785 mm (39,5 gauges)

Length of the barrel without the muzzle brake

4270 mm (35,5gauges)

Length of the rifling

3400 mm

Number of grooves

36

Progressive angle of rifling

 

At the beginning of grooves

45 gauges (3°57´)

At the end of grooves

25 gauges (7°10´)

Width of grooves

6,6 mm

Depth of grooves

1,0 mm

Width of the land

4,0 mm

Length of the breech chamber from the breechface to the

beginning of grooves

594 mm

 

Maximum quadrant elevation

70°

Maximum angle of depression

Horizontal traverse:

 

With the quadrant elevation of the barrel from

–5 to +18° 360°

With the quadrant elevation from +(18-70°) and barrel positions:

 

Between movable trails

66°

Between the immovable trail and movable trails

±29°

Amount of Steol M (glycerin and ethyl-alcohol mixture used

ashydraulic fluid – the translator’s note) in the recoil absorber

10,3 l

Amount of Steol M in the recuperator

9,77+0,2 l

Initial pressure in the recuperator

46+2 kg-force/cm2

Normal length of recoil

740-930 mm

Ultimate length of recoil

940 mm

Pressure in the balancing gear if the quadrant elevation is 70°

59-65 kg-force/cm2

Amount of Steol M in the balancing gear

0,45 l

3. DIMENSIONS 

 

Length of the howitzer in the travelling position

5400 mm

Width of the howitzer in the travelling position

1950 mm

Height of the howitzer in the travelling position

1660 mm

Height of the howitzer in the battle position with the quadrant

elevation of 0° (shield)

 

Height of the fire line

900 mm

Length of the howitzer in the battle position with the quadrant

elevation of 0°

7800 mm

Distance between fulcrums of the carriage in the battle position

5600 mm

Clearance

About 325-345 mm

Width of running

1850 mm

Diameter of the wheel

1035 mm

Width of the wheel tire

270 mm

Distance from the axis of wheels to the gravity center of the

howitzer fixed for travelling

About 230 mm

 

4. WEIGHT

 

Weight:

 

Howitzer in the firing position

3200 kg

Howitzer in the travelling position

3290 kg

Bore

1050 kg

Breech mechanism

61 kg

Rocking parts

1500 kg

Recoiling parts

1230 kg

Cradle

200 kg

Recoil absorber assembled

75 kg

Recuperator assembled

73 kg

Balancing gear

34 kg

Upper mounting

190 kg

Lower mounting with a fixed trail

320 kg

Trails (two)

300 kg

Wheel with the boss

190 kg

Ski mounting

270 kg

5. OPERATION

 

Rate of fire

6-8 shots per minute

Time to transfer from the travelling to the firing position

1,5-2,5 minutes

Maximum speed for movement along good roads

Up to 60 km/h

Pressure of the carriage trail on the ground

(when fixed in the traveling position)

200 kg

Pressure of the drawbar loose on the hook of the hauler

180 kg

SOME HISTORY FACTS





10,000

Tonnes of iron
Shot at Siege of Sebastopol during Crimean War





144,000

Revolutions per minute
Does a bullet fired from Lee Enfield rifle, as used in both world wars





2,000

Women
The Nizam of Hyderabad raised in 1975 for his war against the Marathas





130,000

Meters
Is an effective range of Big Bertha, the World War I howitzer


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Contact Information

ABOUT SPETS TECHNO EXPORT

State Foreign Trade Enterprise “SpetsTechnoExport” is a fully state-run entity incorporated by the Government of Ukraine in 1998 for export-import activities at foreign armaments markets.

HEAD OFFICE

7, Stepana Bandery Avenue
Kyiv, 04073, Ukraine
tel: +380 44 5685070
fax: +380 44 5685068

LIAISON OFFICE

B-5/147 Safdarjung
110057, New Delhi
tel: +91 11 26153792
fax: +91 11 26153830

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