INFORMATION ON THE SOVIET DT-55 TRACTOR

Document Type: 
Collection: 
Document Number (FOIA) /ESDN (CREST): 
CIA-RDP80-00809A000700200045-8
Release Decision: 
RIPPUB
Original Classification: 
C
Document Page Count: 
4
Document Creation Date: 
December 22, 2016
Document Release Date: 
August 31, 2011
Sequence Number: 
45
Case Number: 
Publication Date: 
August 24, 1954
Content Type: 
REPORT
File: 
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PDF icon CIA-RDP80-00809A000700200045-8.pdf133.74 KB
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Sanitized Copy Approved for Release 2011/08/31: CIA-RDP80-00809A000700200045-8 CLASSIFICATIOr.I c.r.- - - - - - - E-N-'I'-I-;,-L CENTRAL INTELLIGENCE AGENCY REP INFORMATION FROM FOREIGN DOCUMENTS OR RADIO BROADCASTS CD SUBJECT Economic; Technological - HOW PUBLISHED Semimonthly, monthly peri Agriculture, machine building odicals DATE OF INFORMATION 1953-1954 DATE DIST. Aug 1954 WHERE PUBLISHED Moscow DATE NO. OF PAGES 5 g- SLISHED Oct 1953, Mar 195! SUPPLEMEN, TO REPORT NO. THIS IS UNEVALUATED INFORMATION INFORMATION ON THE SOVIET DT 55 TRACTOR STATE ARMY SPECIFICATIONS AND TEST RESULTS -- Moscow, Tekhsovety MTS, No 19, Oct 53 The DT-55 tractor, developed at the Stalingrad Tractor Plant, will play a large part in mechanizing the draining and reclaiming of swamplands. The tractor is designed for land reclamation work and for general use with farm machines on reclaimed land. Decrees of the 19th Party Congress call for the reclaiming of swampland in the Belorussian, Ukrainian, Latvian, Lithuanian, Estonian, and Karelo-Finnish SSRsrin the RSFSRrin the Barahinskaya lowlands, and in other regions. During the Fifth Five-year plan, the area of the re- claimed land mist he increased by 40-45 percent. The DT-55 is based on the DT-54 tractor, and differs chiefly in the design of the undercarriage. The idler wheel., including tension-adjusting and shock-absorbing devices, the tracks, and the drive sprocket were redesigned. Changes were made in the design of the track roller frames, support rollers, and track rollers. Some changes were made in tae design of the frame, the body, and the hood. The ground pressure of the DT-54 tractor is 0.38 kilograms per square centimeter. By increasing the width and length of the track links of the DT-55, the ground pressure was decreased to 0.22 kilograms per square centi- meter. CLASSIFICATION C?O-N-F-I-D-E -tr-T-.I-A-L _ rvsas ~~ DISTRIBUTION Ire i -j" -I ---~-7---r-T Sanitized Copy Approved for Release 2011/08/31: CIA-RDP80-00809A000700200045-8 Sanitized Copy Approved for Release 2011/08/31: CIA-RDP80-00809A000700200045-8 I The foll1owing table shows the specification variations and the DT-51+: Speeds (discounti ng slip- Jog), in km/hr First gear 3.87 Second gear 5.0 Third gear 5.85 Fourth gear 6.77 Fifth gear 8.52 Calculated drawbar pull (on stubble field, dis- counting slipping), in kg First gear 2 636 Second gear Third gear , 1,936 Fourth gear 1,576 Fifth gear 1,306 85'6 Over-all dimensions, in mm Length Width 3,946 Height 2,143 2,326 Width between track centers 1,577 Distance between idler wheel and drive sprocket, in mm 2,720 Track width, in mm 540 Track link pitch, in mm 174 Avera'. ground pressure per square entimeter, in kg Weight (with fuel and water), in kg 2,850 2, loo 1,750 1,450 1,000 3,660 1,865 2,350 1,435 2,604 390 uiu fu7-7 are centa on tests conducted on a peat field with moisture content o of 10 centimeters, and a 05e7 ieters to a depth ground-water level of 30-40 c centimmeters: Gear RPM Speed (km/hr Drawb H Drawbar Pull Fuel Con- sum tion p S11- ar P (kg) (kg/hr) in ) 1 2 1,270 3.75 37.2 2,690 11 2 1,290 4.96 37.8 2,060 11 2 3. 2 4 3 4 1,285 5.82 33.4 1,560 . 11 55 . 1 1,290 6.74 31.4 1,260 . 11.55 .9 1.5 (Article by Ye. Sorokin) Sanitized Copy Approved for Release 2011/08/31: CIA-RDP80-00809A000700200045-8 Sanitized Copy Approved for Release 2011/08/31: CIA-RDP8O-00809AO00700200045-8 COMPARISON OF DT-55 WITH DT-54 -- Moscow, Avtomobil'naya i Traktornaya Promyshlen- nost', Mar 54 The engineering and technical personnel of the Stalingrad Tractor Plant have developed the DT-55 tractor for lend reclamation work. The basic design of the DT-55 tractor is identical with that of the DT-54 tractor. Disposition of the engine, transmission, steering, fuel tank, and other units on the DT-55 tractor is identical with that of the DT-54 tractor. The base of the DT-55 tractor is 570 millimeters longer than the base of the DT-54 tractor. The increase in length has been attained by mounting idler wheels on individual suspension units with leaf springs. These suspensions serve as supporting rollers and for, tightening or loosening the track. The width of the DT-55 tractor track is 530 millimeters; the width of the track on the DT-54 tractor, is 390 millimeters. The tractor frame of the DT-55 tractor is equipped with a front bar on which the axles of rocking shafts of idler wheels are fixed. The length of the track shoe has increased to 196 milli- meters, as compared to the 174-millimeter track shoe on the DT-54 tractor. The distance between grousers has been made 25 millimeters longer than on the DT-54 tractor. The ground pressure of the DT-55 tractor is 0.20-0.22 kilograms per square centimeter. Tests conducted in 1952 showed that the wide track and the low ground pressure permit the DT-55 tractor t,, work on swampy ground on which no other tractor can work. Two drained areas were used to test the DT-54 and DT-55. One plot of land had been plowed to a depth of 45-50 centimeters and disked 3 days before he tests were conducted. The other plot of land was unplowed, drained virgin soil with a top layer of sod, 5-7 centimeters deep. The method of testing consisted of gradually increasing the workload with each speed until either the tractors started slipping or the engine died. The PBYa-56 swamp plow and the 5-80 tractor were used to test the pull of each tractor. The maximum pull for each speed of the tractors is given below (in pounds): Plowed Field Virgin Soil 1st 'neerl 1,600-1,700 2,200-2,300 2,200-2,300 3,100-2,200[sic, 2d speed 1,500-1,600 2,200-2,300 2,100-2,200 2,900-3,000 3d speed 1,600-1,700 2,100-2,200 2,200-2,300 engine died 4th speed engine died engine died engine B'-d engine died The tracks of the DT-55 tractor withstood 30-40 percent more drawbar pull than the tracks of the DT-54 tractor before sinking on swampland. The Stalingrad Tractor Plant is producing a group of DT-55 tractors for extensive testings. -- V. A. Rodionov and V. I. 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