Krupp 87mm field gun M. 1886

 

 

 

 

Bulgarian designation :

8,7-см далнобойно полско оръдие “Круп”

87-мм нескорострелно полско оръдие “Круп”

Krupp designation :

9cm Feldkanone C/80

Calibre :

87mm L/24

Weight of the barrel :

450 kg

Weight of the breech-block :

38.5 kg

Weight of the carriage :

530 kg

Weight in action :

990 kg

Weight of the limber :

500 kg (empty) – 800 kg (loaded)

Weight in marching order :

1790 kg

Weight of ammunition wagon :

2000 kg

Length of the barrel :

2.1 m

Length of the bore :

1865 mm

Length of twist :

3915 mm – 45 calibres

Barrel grooves

number :

24

depth :

1.25 mm

width :

8.40 mm

Battering charge :

1.5 kg of black powder (Grobkφrniges Art.-Pulver)

610 g of smokeless powder

Common shell

weight :

6.21 kg – charge: 210 g

length :

215 mm

muzzle velocity :

460 m/s

max. range :

6800 m

Shrapnel

weight :

7.1 kg – charge: 80 g of black powder

180 bullets x 15 g

7.1 kg – charge: 80 g of black powder

300 bullets x 11 g

7.1 kg – charge: 80 g of black powder

260 bullets x 11 g

length :

188 mm

muzzle velocity :

435 m/s

max. range :

5200 m

Case shot

weight :

6.7 kg – 82 zinc balls

max. range :

400 m

Remaining velocity :

217 m/s at 6000 m with shrapnel

195 m/s at 4000 m with common shell

Length of the line of sight  :

1050 mm

Elevation :

+ 24° / + 8°

Track :

1.528 m

Transport :

drawn by six horses

Ammunition :

carriage – 1 case shot

limber – 30 rounds and 2 case shots

ammunition wagon – 85 rounds and 2 case shots

8 ammunition wagons for every eight-guns battery (with six-guns batteries only 6 ammunition wagon)

Remarks :

Slow firing jacket field gun (Mantelrohr), cylindro-prismatic wedge breech mechanism with an expanding steel obturation ring, traverse on pivot. It was fitted with a direct fire sight and aiming circle. It was modernised to use smokeless powder, but the rapidity of fire was not very great. It was adopted also by the Rumanian and Turkish Army.