T-72, PT-91 TANKS AND DERIVATIVES

The gear units are composed of the gearbox and the planetary gear.
They provide maneuverability, reliability, flexibility and durability in all weather and terrain conditions.

Right gearbox 175.48.001 sb
Left gearbox 175.48.002sb

We produce gearboxes in versions sb-3, sb-3Ax, sb-3Bx, sb-3Cx

PARAMETRES	UNIT	VERSION …..sb-3Cx
Power transmitted	KM	850
Max torque (at 1300 obr/min)	Nm	3100
Number of gears		7+1
Total gear ratio		78,27
Weight	kg	700

Gearboxes with reinforced structure:

Right gearbox 670.48.001z
Left gearbox 670.48.002z

PARAMETRES	UNIT	VERSION 670.48…
Power transmitted	KM	1000
Max torque (przy 1300 obr/min)	Nm	4300
Number of gears		7+1
Total gear ratio		78,27
Weight	kg	718

Reliability and durability of the product was increased by:

Reinforcement of gear wheels by tooth line modification
Reinforcement of gear wheels and other components bearings
Change of clutch plates profile
Lubrication system improvement
Change of servo design
Introduction of modernized, more efficient oil plump

The reinforced version of the gears is fully interchangeable with standard gears and is used in all tracked vehicles built on the basis of the T-72 chassis.

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TECHNICAL DESCRIPTION

We have test stands for all the gearboxes we manufacture.
For external customers, we also produce test stands for units based on our own or entrusted documentation.
Sample research positions:

TEST STAND FOR GEAR BOXES 48, GROUPS 850-1000KM

TEST STAND FOR INTERMEDIATE GEARBOXES 45 GROUPS:

TEST STAND FOR DISTRIBUTORS 62 GROUPS:

Side Gear:

The side gear is a single-stage planetary reducer with a constant reduction ratio.

It reduces the output speed of the gearbox and increases the torque accordingly.

The side gear is connected to the gearbox to form one unit weighing over 700 kg.

We carry out services and repairs of:

171.45sb
175.45sb-1Ax
170.45sb

Applicable in all tracked vehicles built on the basis of the T-72 tank chassis.

We carry out services and repairs of:

Shock absorbers are used for vibration damping, absorption of shocks and impacts arising when the tank negotiates terrain unevenness. The shock absorbers are of the lever-paddle type. The vehicle is fitted with 6 shock absorbers, 3 on each side, at the 1st, 2nd and 6th road wheels, which are connected to the road-wheel rockers. Shock absorbers are filled with oil, which is not refilled during operation. The friction of the oil when squeezing through the valve openings creates a drag force that dampens the vibrations of the vehicle hull.

HYDRAULIC SHOCK ABSORBERS:

172.52.043sb-1
172.52.044sb-1
172.52.045sb-1
172.2M.52.001sb
172.2M.52.002sb
172.2M.52.003sb

Applicable in all tracked vehicles built on the basis of the T-72 tank chassis.

FRICTION SHOCK ABSORBERS:

ACP.52.0201 SHOCK ABSORBER 1LK
ACP.52.0202 SHOCK ABSORBER 2LK 2PK
ACP.52.0203 SHOCK ABSORBER 6LK
ACP.52.0204 SHOCK ABSORBER 1PK
ACP.52.0205 SHOCK ABSORBER 6PK

We produce and carry out repairs and modernizations:

Road wheel W-172.50.053sb or 172.50.001sb
Road wheel W-172.50.054sb or 172.50.002sb

Applicable in all tracked vehicles built on the basis of the T-72 tank chassis.

We produce and carry out repairs and modernizations:

SUPPORT MECHANISM

170.64.1sb-1
172.64.001sb-4

Applicable in all tracked vehicles built on the basis of the T-72 tank chassis.
Support mechanism in the brake control system.

STARTER-GENERATOR DRIVE

175.47sb-1-Ax

Starter-generator drive are intended for transferring rotations from starter-generator to engine during engine starting and also for transferring rotations from engine to starter-generator during engine operation to generate current. Starter-generator can be mounted on intermediate gear in the tanks T-72, PT-91 and similar.

We produce and carry out repairs:

CONTROL VALVES AND THROTTLE VALVES TD.50…

VALVE 170.105.010sb-D