VTG 90A tracked tractors , Samara

Name
Value for tractors
VTG-90A VTG-90M
 
Tractor traction class
                       3
Overall dimensions of the tractor, mm:

- length with attachment system
                4 700                       4 800
    - width (on the stairs)
1,850
- height on the roof of the cabin
                    2 700
Engine brand
     A-41SI-02 D-245.5S2
Ground clearance, mm
                     370
Tractor track, mm
                    1 330
Base, mm
  1 612
Tractor operating weight, kg
                7 100 6 850            
Number of gears
(without speed limiter and reverse gear):

- forward
                          7
    - Get back
1
Tractor speed range
(without speed limiter and reverse gear), km/h:

- forward running
       5,3…11,17               5,45…11,5
    - reverse gear
                  4,54 4,67
Fuel tank capacity, L
320
Duration of continuous operation of the tractor without refueling, h
19.0
Engine operating power, kW
                  69,1 66,7
The rotational speed of the diesel crankshaft at operating power, min-1
                1 750                         1 800
Specific fuel consumption at operating power, g/kWh
                   245 225
Torque reserve ratio, %
20.0 Source: https://vektor163.ru/p/60868483-gusenichnyy-traktor-vtg-90a-i-vtg-90m/
VTG-90A and VTG-90M tractors, tracked, agricultural, general purpose, traction class 3 according to GOST 27021, climatic version U1 according to GOST 15150 are designed to perform basic agricultural work in combination with mounted, semi-mounted and trailed hydrofused and non-hydrofused machines and implements for plowing, pre-sowing tillage, sowing, for works in irrigated agriculture, in drained swamps, as well as for road construction, earthmoving and reclamation works, as well as for municipal purposes.

Design description:
The VTG-90A tractor is equipped with an A-41SI-02 diesel engine manufactured by JSC Altai Motor Plant, and the VTG-90M tractor is equipped with a D-245.5S2 diesel engine manufactured by JSC Minsk Motor Plant.

The transmission is mechanical, it includes a clutch, a driveshaft, a gearbox, a rear axle, and right and left final (on–board) gears. On request, a power take-off shaft (PTO), a speed limiter or a reverse gearbox can be installed on the tractor.

The clutch is a friction, two–disc, permanently closed type.

The gimbal transmission is a telescopic shaft with two universal gimbal joints on open–type needle bearings with a mechanical clutch brake. It provides torque transmission and compensation for misalignments and misalignments between the clutch shaft and the gearbox shaft (gearshift or reverse gear).

The transmission is a manual, seven–speed, with movable gears. There is a lock in the gearbox that prevents the gears from turning on and off when the clutch is engaged. The gearbox and the rear axle share a common housing.

The rear axle consists of a main gear, a planetary steering mechanism and braking devices.

The final gears are located on both sides of the rear axle and consist of a pair of gears and driving wheels. The drive wheels transmit torque to the track chains, which ensures the forward movement of the tractor.

The power take-off shaft is a single-stage gearbox, partially independent, with interchangeable gears and a shank, mounted on the rear plane of the transmission housing. It is used to drive the working bodies of machines and tools for various purposes, aggregated with a tractor. The output shaft has two rotation speeds – 540 min-1 or 1000 min-1. The torque at the PTO is transmitted from the primary shaft of the gearbox, and when the tractor is equipped with a travel suppressor or a reverse gearbox, respectively, from the drive shaft of the travel suppressor or reverse gearbox. The PTO rotation speed is changed by replacing the gears of the PTO gearbox.

The tractor's movement is controlled by two steering levers, a clutch pedal and a stop brake pedal operated by means of tracking-type pneumatic amplifiers.

The tractor frame is welded, designed for mounting all parts of the tractor on it.

In the front part of the frame there are two M20 threaded holes on the lugs and four M20 threaded holes on the side surfaces of the front beam for mounting brackets for the front ballast loads. Ballast loads are installed only on agricultural tractor modifications.

The undercarriage system consists of four balancing suspension carriages, two guide wheels with spring shock absorbers and hydraulic mechanisms for track tension, four support rollers and two 390 mm wide track chains (two driving wheels are mounted on the final gears). For peat (swamp-walking) tractor modifications, the width of the track chains is 670 mm.

The tractor is equipped with a separate hydraulic system, a rear attachment and a trailer hitch. The maximum fluid pressure in the system is 18...20 MPa.

The DC electrical equipment with a rated voltage of 12 V is made according to a single-wire circuit.

The tractor's pneumatic system is designed to reduce the effort on the steering controls, brakes and clutch.

A sealed noise and vibration-proof cabin with an additional seat for an auxiliary worker is installed on the tractor.

The cabin consists of a frame made of rectangular beams, a roof, two doors and a platform. The cabin is bolted around the perimeter to the platform. The platform with the cab is mounted on the tractor frame on six rubber shock absorbers. The cabin is maximally glazed with safe heat-absorbing glasses. The battery is accessed from the left outside of the tractor. The cabin inside is noise- and heat-insulated with a special porous material.

The following equipment is installed in the tractor cabin to create a normal microclimate, ensure operation in all weather conditions and create comfort:

the windshield and rear windows are tinted in the form of double glazing;
the ventilation hatch in the roof is equipped with an emergency exit.;
cabin heater;
electric front window wiper;
electric front window washer;
the interior lighting of the cabin.  Source: https://vektor163.ru/p/60868483-gusenichnyy-traktor-vtg-90a-i-vtg-90m/