PERFORMANCE
Maximum muzzle velocity : 716 m/s
Range
-Maximum : 17,200 metres
-Minimum : 200 metres
Time into and out of action : 2 to 3 min.
Rate of fire
-Normal : 4 rds/min.
-Intense : 6 rds/min.upto 10 minitues
-Sustained
-Upto charge 5 : 1 rd/min .for 2 hours
-For charge super : 1 rd/2mts.for 2 hours
Detachment : 7
PHYSICAL DATA
Weight of the equipment
-Ordnance
-Barrel : 396 kg
-Gun rails : 128 kg
-Breech ring : 128 kg
-Breech block : 30 kg
-Muzzle brake : 34 kg
-Cardle : 233 kg
-Saddle : 95 kg
-Trail assembly : 574 kg
-Firing platform : 96 kg
-wheel assembly : 168 kg
Weight of the equipment
-Balancing gear : 121 kg
-Buffer : 78 kg
-Recuperator(along with air
bottle) : 99 kg
-Elevation gear box : 50 kg
-Traversing gear : 10 kg
-Firing generation : 05 kg
-Spade box : 10 kg
-Cut off gear : 11 kg
-Covers : 20 kg
-Jack and hand spikes : 26 kg
-'A' frame with cross bar : 21 kg
-Shield : 46 kg
Total weight of sub assembly : 2380 kg
Weight at the towing eye
-Folded position : 280 kg
-Firing position with 'A; : 215 kg
Frame
-Firing position(with
platform unloaded ) : 130 kg
overall length
-Folded back position : 5054 mm
-Firing position : 7216 mm
Maximum width : 1820 mm
Height of gun at 0 deg.elevation : 1494 mm
Ground clearance in travelling : 330 mm
position
Trunning height : 1070 mm
Gun CG in firing position at 30 deg. : 400 mm rear of Pintle centre
elev.
Gun CG in folded position : 500 mm rear of Pintle centre
Downward force acting at balancing : 840 kg
gear spigot assembly due to [at 0 deg.elevation]
unbalanced elevating mass
ORDNANCE
Calibre : 105 mm
Length of ordnance(Rear face of : 4400 mm
breech ring to front face of the
muzzle brake)
Length of barrel : 3890.5 mm
Chamber capacity : 5.178 litres
Max.working pressure(service) : 346 Mpa(22 tsi)
System of rifling : Poly groove plain section
Twist of rifling : Uniform 1 in 19 caclibres
Right Handed helix angle-9
deg.
Length of rifling : 3248 mm
No.of grooves : 28
Depth of grooves : 0.94 mm
Width of grooves : 8.1 mm
Distance of 25 mm from C or R
-To rear face of barrel : 846.4 mm
-To breech face of barrel : 667.4 mm
-To muzzle face of barrel : 3223 mm
Protusion of firing needle
-Maximum
-Minimum : 2.79mm
EFC/charge value : 2.29 mm
Condemnation limit for CHC : S,5,4.4,4.3,3,2,1,3,1,0.25
No.of EFs which may be fired : 0.76 mm
between examinations
-Before scoring commences : 400 EFCs
-When scoring commences : 200 EFCs
Probable barrel life : 4500 EFCs
Condemnation limit for barrel : 1.02 mm
Muzzle brake
-Type : Double baffle
-Efficiency : 40%
Type of breech mechanism : vertical sliding breech block
Method of operation : Hand operated
Type of firing mechanism : Electrically fired by generator
mounted on the cradle
CARRIAGE
Type of Trail : Tubilar,box type
Type of balancing gear : Spring
Elevation range : -5 to 73 degrees
Elevation with one turn of hand wheel : Half degree
Effort on elevation hand wheel : 5 kg(max)
Elevation gear friction clutch
assembly-Permissible amount
of slippage in terms of change in Q.E
-Charge 5 : 4 deg.(approx.)
-Charge super : 5 deg.(approx.)
Traverse range : 5 deg.left & right
: 360 deg.traverse on firing
platform
Traverse with one turn of hand wheel : Half degree
Effort on traversing hand wheel : 5kg(max)
RECOIL SYSTEM
Type of buffer : Rotative valve type
Quantity of oil in buffer : 8.5 litres
Liquid used [in buffer &recuperator] : Oil mineral hydraulic buffer
Type of recuperator : Hydro pneumatic telescopic
Quantity of oil in recuperator : 5.75 litres
Charge pressure : 60 kg/ sq cm.(850 psi)
Maximum permissible recoil lenght : 1060 mm
Metal of metal recoil length : 1160 mm
Cut off gear
-Working range : -5 to 12 deg.&46 to 70 deg.
-One turn of adjustable nut
-shortens/lengthens recoil by : 15 to 20 mm
-angular rotation of buffer rod : 48 minutes
by
Trunnion pull
-Charge super at 45 deg.Q.E : 12 tonnes
SIGHTING SYSTEM
Sight,dial : 104 A
Mount,dial sight : 104 A
Telescope,sighting : 106 A
Mount,telescope : 102 A
TOWING VEHICLE
Type &turning radius
-Tractor arty 3 ton Shaktiman : 7.25 metres
4200
-Tractor arty 3 ton : 6.80 metres
-Tractor arty 1 ton : 5.90 metres
[with tail board and bumper removed]
Towing speed : As app.to towing vehicle
Bride classification
-Gun alone when being manually : 6
handled
-Gun towed with FAT 3 ton : 12
S/Man 3200/4200
WHEELS AND BRAKES
Track width : 1465 mm
Tyre size : 8.25 x 19 with 10 ply rating
Tyre pressure : 3.5 kg/sq.cm(50 psi)
Tyre of brake
-Over run brake : Hydraulic
-Parking brake : Mechanical
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