Peterburgsky Traktorny Zavod

KIROVETS™. Exceptional effectiveness
     

Snow-removing machines

Kirovets K-703MA-OS and K-703MA-OS2

Milling rotary snow-removing machine produced on the basis of industrial tractor of K-703MA type. Capacity — up to 1200 t/h. Snow ejecting distance is up to 25m. Auxiliary equipment — dozer blade, reverse control station and creeper gear.

Milling rotary snow-removing machine is designed to remove the snow from highways and inner-city roads, to spread the snow piles formed by bulldozers and blade snow plows, as well as to lay the winter field roads through virgin snow. Milling rotary snow-removing machine “Kirovets K-703MA-OS” is one of the heaviest and most efficient home-produced machines for snow removing.      
In order to work in the severe winter environment, the machine passed the additional constructional adjustment: drag hinges and hinge pivots of steering hydraulic cylinder were enforced and frost-resistant wear sleeves of high duty were used for hinge pivots.   
Millers, which work over the snow drift, and rotor that throws the snow through branch pipe are contained in one framing that is attached to the rear frame of snow-removing machine. Snow ejecting angle and direction of snow jet (left/right) may be changed by means of the hinged rotor hood.   
 
Configuration without dozer blade and manual gearbox with the creeper gear Configuration with dozer blade, reverse control station and manual gearbox with the creeper gear 
Auxiliary equipment – dozer blade and reverse control station. This equipment enables the additional machine loading during summer period. Moreover, such equipment helps it operate as the carrier and maintenance machine.    
Due to available creeper gear, the tractor may be used as a base for installation of rotary hoes, soil cutters and rotovators.  
Manual gearbox, shifting the gears within four regimes with no power loss, enables the usage of machine as farming tractor of fifth drawbar category in spring, summer and autumn periods.
Thus, the seasonal scheme of machine exploitation may be as follows: 

Winter

  • Road clearance
  • Loads transportation

Spring, summer, autumn

  • Farming field operations (soil preparation and dropping)
  • Loads transportation
  • Silage laying
  • Road maintenance and clearance
  • Rotary hoe and rotovator 

Configuration without dozer blade 

Configuration with dozer blade and reverse control station

 

MAIN CHARACTERISTICS

К-703МА-OS

К-703МА-OS2

Maximum weight, kg

Dry (constructive)

15600

19400

Operating

16500

20000

Endwise weight distribution, %

Front axle

58+2

55

Back axle

42+2

45

Wheel track, mm

2255+40

2295

Wheel base, mm

3750+50

3750

Minimum turning circle (along the axis of outside wheel track if the back axle is off), m

7,7+0,5

7,75

Dimensions, mm:

Length

9190+50

10500

Width

3240+50

3290

Height

3580+40

3620

Critical angle of transverse statical stability, radian (degrees)

0,61(35)

0,61(35)

Critical angles, radian (degrees):

Rise (come-down)

0,31(18)...0,35(20)

0,35(20)

Roll

 0,21(12)...0,35(20) 

0,35(20)

Rise with trailer

0,21(12)...0,21(12)

0,21(12)

Fuel capacity, l

320

320

ENGINE

YMZ-238NDZ-1

YMZ-238NDZ-1

Nominal power, kW (hp)

173(235)

173(235)

Operating power

160(217)

160(217)

Rated speed, min-1

1700

1700

Engine start heating

PJD-30

PJD-30

GEARBOX

   

Gearbox – manual. It shifts four gears within each of four regimes with no power loss (16 speeds of forward and 8 speeds of reverse running)

Running speed at rated frequency of engine speed and no slipping, m/s (km/h)

Forward running

- 1,3(4,72)...9,4(33,8)

Forward running - 1,3(4,72)...9,4(33,8)

Reverse running - 1,6(5,86)...6,7(24,0)

Задний ход - 1,6(5,86)...6,7(24,0)

Running speed at operating range (with hydrostatic creeper gear), m/s (km/h)

0(0) ...2,2 (8,0)

0(0) ...2,2 (8,0)

Engine and weight axles are driving, weight axle is selectable 

Inter-wheel differential is a self-locking freewheeling gear clutch

RUNNING GEAR

 

Axle suspension

Rigid

Stiff

Industrial tires

29,5/75R25

29,5/75R25

Rims

dismountable

mountable

Service brake – dry wedge-type brake with air drive

Parking brake – stop-type disk brake with air-spring drive

Machine frame has the enforced drag hinge and hinge pivots of steering hydraulic cylinder.  

Wear sleeves of hinge pivots are frost-resistant and changeable

CABIN TYPE AND ITS EQUIPMENT

 

Two-man cabin from solid metal with thermal, vibration and noise insulation. It has the built-in safety cage protecting the operator from rollover and objects falling.

Reverse control station is in the operator’s cabin

-

V

Operator’s seat is a spring saddle.

Defroster vents for blowing of front and back windows; windows of operator’s cabin are tinted.

2

2

Windows of operator’s cabin are tinted

Tinted

тонированное

Operator cabin heaters with the regulated working modes     

2

2

MILLING ROTARY SNOW-REMOVING EQUIPMENT

 

Millers, which work over the snow drift, and rotor that throws the snow through branch pipe are contained in one framing that is attached to the rear frame of snow-removing machine.

Snow ejecting angle and direction of snow jet (left/right) may be changed by means of the hinged rotor hood.  

Capacity – t/h

1200

1200

Snow ejecting distance – up to 25 m

10 - 25

10 - 25

Minimal width of strip cleaned in one pass, m 

3,1

3,1

Maximum angle of blade cross-axis tilt, degrees

11

11

Maximum height of one-pass ejected snow, m

1,5

1,5

Maximum height of blade lift, m

1,3

1,3

Maximum loading height, m

3

3

Turning angle of loading chute, degrees

35

35

BULLDOZING KIT

Installed on the engine frame of self-propelled loader.

-

V

Blade height, mm

-

1100

Blade width, mm

-

3160

Blade load-lowering height (bulldozing position at the cutting angle of 55°) – mm

-

520

Maximum height of blade lift, mm

-

1300

Maximum angle

-

27

Maximum angle of blade pitching, degrees

-

11

ADD-ONS (optionally)

Conditioner produced by Avgust Company

- / V

- / V

Individual cabin heater made by Webasto Company

- / V

- / V

Tilt pilot hydraulic system of Danfoss Company

-

V

Wedge-type dozer blade

-

- / V