SPECIFICATIONS OF SOVIET BELARUS' TRACTOR

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00809A000700160239-8
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 8
• Document Creation Date: December 22, 2016
• Document Release Date: September 8, 2011
• Sequence Number: 239
• Publication Date: February 15, 1954
• Content Type: REPORT

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1 MAR 1952
CLASSIFICATION co.'uFIDENTrAI.
CENTRAL INTELLIGENCE AGENCY REPORT
INFORMATION FROM
FOREIGN DOCUMENTS OR RADIO BROADCASTS CD NO,
COUNTRY USSR
SUBJECT Econa~mic; Technological - Tractor industry
HOW
PUBLISHED Monthly periodicals
WHERE
PUBLISHED Moscow
DATE
PUBLISHED oct 1952, May 1953
LANGUAGE Russian
DATE DIST. / sFeb 1954
NO. OF PAGES 8
SUPPLEMENT TO
REPORT N0.
The bulk of the information in this report is taken from an
article by I. I. Drong, a Stalin Prize winner of the Minsk Trac-
tor Plant, in Avtomobil'naya i Tra'r.to-'nnYn Promyshlennost', No 10,
1952. Some additional information and variant data from Mashinno-
Trakt,ornaya Stantsiya, No 5, 1953, is given, ns indicated.
The 3T-horsepower Belarus' tractor developed by the Minsk Tractor Plant
comes in two models: the MTZ-1, vith a narrow front tread; and the MTZ-2,
vith a wide front tread. The MTZ-1 is intended for cultivating tall crops
(cotton, sunflower, and corn), while the MTZ-2 is designed for cultivating
lox-growing crops (sugar beet, potatoes, and kok-sagyz). Both models can be
used with either mounted or pull-type implements; and the MTZ-2 can be used as
,. a prime mover in transport work. Both models come equipped with low-pressure
balloon tires, but can also be supplied with steel-spur rims on the rear wheels.
The kinematic diagram of the Belarus' tractor is shown in Figure 1.
Specifications of the Belarus' tractor are as follows ~ariant figures,
marked by an asterisk (~), in the following table are from the Mashinno-
Traktornaya Stantsiya article:
Specifications
Type tractor
Type engine
Horsepower of engine
Four-cycle, four-cylinder solid injec-
tion Kirovets D-35 diesel
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Specific consumption of fuel, in
grams brake hPI ~', maximum
Tractive power on stubble field, in
second gear, at rated power of
engine, in hp;
Nith steel-spur rims
Calculated speeds (discounting slip-
ping) at rated rpm, in ]?/hr; and
corresponding tractive power at
maximum hp in kg:
~~
Tractive Power
First gear
4.60
4.96*
1~l~Op
Second gear
5.65
5.61+
1,200
1,250*
Third gear
6.04
6.44+
1,100
Fourth gear
6.93
7.38*
900
Fifth gear
12.20
12.95*
450
Reverse gear
3.31
3.42*
Over-all dimensions, in mm:
~_1
~-o
Length
3,720
3,678+
3,665
3,678+
Width
1,885
1,884+
1 885
1,884+
Height
To top of radiator
1 615
1,630
To top of exhaust pipe
2,400
2,430+
2,400
2,430+
Tread widths (ad,7ustable), in mm:
Rear c:heels
1,250; 1,350; 1,450 ~M1Z-1 front wheel
220 ~ingle Pront whee~
1,550; 1,650; 1,800 ~MTL-2 front wheels]
1,250 - 1,850 ear wheel ~ote: Text
later indicates that the rear wheel tread can be adJusted from 1,250 to
1,850 millimeters; hence, the tread widths as given above have apparently
been transposed. A suggested interpretation of these figures is given in
the brackets on the right above. (It may be noted, however, that accord-
ing to Mashinno-Traktornaya Stantsiva, the Pront and rear wheels of the
MTL-2 can be adJusted for tread widths from 1,200 to 1,800 mm. Turning
radius is 3.7 meters. Fuel tank holds 105 liters.]
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liheel sizes, in inr_hes;
Rear
Front
Road clearance, in mm:
Rear axle
Front axle
Transmission housing
Both
11 x 38
5.5 x 16
G3o
5'-5
i+5~
Dry veight oP tractor with hydraulic
system (without drive pulley), with
load on rear wheels, in kg: 3,100 3,25 3,200
(Sole: Rear wheels can he fitted with 8.25 x 40 tires when space between rows
is small. Rear tires can be filled with up to 250 kilograms of water to im-
prove traction.)
Te reduce the weight on the front wheels of the tractor, the cast-iron
~~il pan of the D-35 engine has been replaced with a stamped steel oil pan.
The coarse and fine oil filter:: ure based on the oil filters of the DT-5i+
tractor. Tfie coarse filter is metallic; the fine filter is an ASFA-1 cardboard
Filter.
The oil radix*.or ~ame as that used on the DT-54 tractor, according to
Ma-hinno-Traktornayn Stnntsiya f is in front of the water radiator.
'Phe single-disk dry c1ut:.i~ Is unified vith the clutch of the Im-35 crawler
erector, but is cf the constant-mesh type. It has n central pressure spring
r~~.nd a special brake for sloutnp; down the assembly when the clutch is engaged.
The five-spend trnnsmi::~ior, differs from conventional transmissions in
that there is no direct drive when .+e muin drive gear and the main shaft coin-
cide. This arrangement makes for great.^r strength and hence Longer life for
transmission parts.
The transmission counter::hait gear has smooth, ground holes in the hub,
and f:: fitted to the smoothly ground countershaft. This arrangement reduces
t~ a minLm,m the amount of play in the gear mounted on the countershaft.
The gears cn the count.er:,haft arc connected to one another by protrusions
and corresponding depressions on the hubs. Sliding gears are mounted on case-
hardened and tempered splices of the transmission main :;ha;t and centered on
the inside diameter to minimize pixy and lengthen the life of splinrd connec-
tions.
The transmission shafts rest. ou ball and roller Y,earings mounted in the
transmission housing. The one-piece iron housing is cast integrally with the
differential an3 final drive housing.
The final drives of the tractor are two pairs of cylindrical gears.
The hubs of the side-transmission driven gears are mounted on the sp'_ined
ends of the axle shafts. The axle shafts rest on two bearings mounted in spe-
cial. cast imr. sleeves. The hubs of the rear driving wheels are mounted on
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the ends of th, axle shafts which project from the cast iron sleeves. The wheel
'hub can be moved along the aplined axle shaft, so that the tread of the rear
wheels can be set at any width from 1,250 to 1,850 millimeters.
The poxer take-off shaft is turned by the transmission countershaft,
through a sliding sleeve with teeth on the inside. Figures 2 and 3 shoe the
side and top views of the transmission.
The dry shoe brakes (Figure 4) are located outside the transmission hous-
'ng
in the rear of the trsctor
under the fuel tank
The brakes have inde
end-
,
,
.
~.
p
e n t control. There is a pedal for each brake under the driver's right foot.
'fhe two pedals can also be locked, so that pressing either pedal will operate
both right and left brakes. ;. _
There is a mechanism in the transmission for locking the differential.
Locking is accomplished by ,joining the right and left brake shafts with a slid-
ing sleeve. The sliding sleeve of the locking mechanism is operated by a lever
located in front of the driver's seat.
The steering mechanism is the same type as that of the ZLS-5 [0~-51, ac-
cording to the Mashinno-Traktornaya Stantsiya articl~ truck and is displaced
io the right of the tractor's central rixis. Consequently, the driver sits
over the right fender, which assures him of better visibility.
Three ~xperimental7 models of the tractor have undergone state tests xith
the following mounted implements, especially designed for the Belarus' tractor:
the PN-3-35 three-bottom plow, the KRN-2.5 shallow cultivator, the SNM-6 sugar-
beet puller, and the KPN-4A sun?er fallow cultivator. For between-rox cultiva-
tion of sugar beets, the tractor was tested with the lQ2S-5.4 trailer cultivator.
During the sugar-beet harvesting season, the Belarus' was tested with the SK~f-3
three-row sugar-beet combine.
The following table compares the productivity and fuel consumption of the
Belarus' tractor with those of the KDP-35 and I(D-35 crawler tractors under the
same workin
conditions
g
.
MT7-1 and MTL-2
KDP-35
and l~-35
Pruduc- Fuel Con-
Produr-
Fuel Con-
Location
Type of
tivity
sumption
tivity
sumption
of Test
Work
(ha per hr)
(kg per ha)
(hn per hr)
(kg per ha)
Central Asia
Stubble
0.53
12.7
0.51-0.55
11.9-12.3
Machine Fx-
perimental
plowing,
18-20 cm
Station
t]orthern
deep
Stubble
0.~~1
12.E
0.5
12.8-3.8
Caucasus
plowing,
13.8?
R
18-20 cm
The
D-35
deep, an3
tractor
harrowing
plowed with-
Central
Cultivating
1.9-2.0
3.7-3.5
1.7
out harrowing.)
1~,0
Chernozem
Machine Ex-
perimental
Station
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The tests showed that in ploving soils with average specific resistance
(0.45-O.bS kilogram per square centimeter), the Belarus' has satisfactory pro-
ductivity and fuel consumption indexes. In plowing soils with high specific
resistsnce (0.7-0.9 kilogram per square centimeter) in Georgia and Central Asia,
the tractor showed low productivity and high fuel consumption. It is obviously
uneconomical to use the Belarus' as a plowi:.d tractor under such conditions.
The tracto.~ was highly productive and showed low fuel consumption in cultivating
operations and in harvesting sugar beets.
Over n long period oP field testing, the three experimental models showed
completely satisfactory operating qualities in the following respects: (n) The
tractor's speeds in various gears correspond to the agrotechnical requirements
of~the Ministry of Agriculture USSR. (b) The tractor operates at between. 80 and
92 percent ~ext has .80-.92~J of full capacity with the mounted and trailer
implements designed for it. (c) Coefficient of reliability in 2,000 hours of
operation was 0.90-0.95. (d) Steering and handling are good, and the tractor
plows sufficiently straight rows.
After prolonged field testing of the three experimental models, the State
Commission concluded that the Belarus' tractor meets agricultural requirements
for dynamic and economic indexes, and also for reliability in operation.
LAppended Figures follow
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Figure 4. Brakes of the Belarus' Tractor. Figure shows
cross sections from front and side of tractor
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