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Utb UTOS-45 E

Built: 1957–1963 · Series: Other models

More machines from model year 1957

Source: https://commons.wikimedia.org/wiki/File:UTB_-_UTOS_tractor.j

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The UTOS-45 E from Utb is part of the Pozostałe modele series. Production: 1957–1963. The engine delivers 45 hp (33.1 kW), has 4 cylinders, with a displacement of 4,180 cm³. Rated speed is 1,500 rpm. The machine is 3,768 mm long, 1,884 mm wide and 1,605 mm high. The unladen weight is 2,870 kg. The wheelbase measures 2,470 mm. Ground clearance is 440 mm. Top speed is 23 km/h. Transmission: 10 V/2 R. The engine is water-cooled. Tyres: front 5.50-16 ASF, rear 12-38 AS. The fuel is diesel. The bore measures 105 mm. The stroke is 130 mm. Construction: semi-frame construction. Rated output across the Utb range ranges from 43 to 65 hp; the UTOS-45 E sits at the bottom of that range with 45 hp. Its immediate neighbours are the U 445 below it with 43 hp and the Universal 600 above it with 58 hp. Rated output across the Utb range ranges from 31.6 to 47.8 kW; here the UTOS-45 E sits at the bottom of that range with 33.1 kW. 5 Utb models across 4 series are on record.

UTOS-45 E by Utb: four-cylinder diesel engine rated at 33.1 kW (45 hp) at 1,500 rpm, built in Romania between 1957 and 1963.

Utb (Uzina Tractorul Brașov) was the Romanian tractor manufacturer whose plant in Brașov built standard tractors for decades, for Romanian agriculture and for export to other Eastern Bloc countries. The UTOS-45 E belongs to the plant's early models.

Read on 3 more paragraphs

The UTOS-45 E is powered by a four-cylinder diesel engine of 4,180 cm³ displacement, delivering 33.1 kW (45 hp) at 1,500 rpm. At an unladen weight of 2,870 kg, a wheelbase of 2,470 mm and a top speed of 23 km/h, the tractor is a solid representative of the mid-power class of its era, at a ratio of just over 86 kg of weight per kW.

Standard tractors of this type from Romanian production handled basic field work in the 1950s and 1960s: ploughing, harrowing, and driving implements through the power take-off, at a moderate rated speed typical for the period and geared toward longevity rather than specific output.

On a used UTOS-45 E from this early series, the condition of the engine and fuel system after decades of use matters most, since parts for this specific engine are only available to a limited extent today, mainly through specialised collectors and enthusiast clubs. The brakes and steering should also be thoroughly checked, along with possible corrosion on sheet-metal parts and the frame after so many years spent standing outdoors in the open.

Sources: SpecCodex-Register: Kennwerte des Modells UTOS-45 E

Technical data

Engine

Fueldieselcorrect
Power45 hp (33.1 kW)correct
Rated speed1,500 rpmcorrect
Cylinders4correct
Displacement4,180 cm³correct
Bore105 mmcorrect
Stroke130 mmcorrect
Coolingwater-cooledcorrect

Dimensions and weights

Length3,768 mmcorrect
Width1,884 mmcorrect
Height1,605 mmcorrect
Wheelbase2,470 mmcorrect
Ground clearance440 mmcorrect
Unladen weight2,870 kgcorrect

Drivetrain and chassis

Driverear-wheel drivecorrect
Gearbox10 V/2 Rcorrect
Front tyres5.50-16 ASFcorrect
Rear tyres12-38 AScorrect
Top speed23 km/hcorrect

Origin and approval

Constructionsemi-frame constructioncorrect

Where this model stands

Power-to-weight ratio: 11.5 kW/t (33 kW / 2.9 t)

Power class: Universal (40–100 hp)

Stronger than 29% of the tractors in the register — out of 15,663 models with a stated power figure.

Calculated from the documented figures above — not a rating.

Frequently asked questions

How much power does the Utb UTOS-45 E have?

The Utb UTOS-45 E delivers 45 hp.

How much does the Utb UTOS-45 E weigh?

The unladen weight is 2,870 kg.

What engine does the Utb UTOS-45 E have?

4 cylinders, 4,180 cm³ displacement, Diesel.

How fast does the Utb UTOS-45 E go?

Top speed is 23 km/h.

What are the dimensions of the Utb UTOS-45 E?

3,768 mm × 1,884 mm × 1,605 mm.

When was the Utb UTOS-45 E built?

Production years: 1957–1963.

What to check before buying

  • Check the hour meter against the service records — a replaced instrument is the most common gap.
  • Compare the data plate and chassis number with the papers.
  • Check the weights in the papers against the figures here — attachments change them.
  • Check front and rear tyre sizes: mismatched pairs strain the drivetrain.
  • Shift the gearbox cold and warm — jumps only show up at temperature.
  • Load the hydraulics and watch for sag.
  • Ask about parts availability for this build year — the running costs hang on it.

A general list for this type of machine — no substitute for an inspection or an appraiser.

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This page carries 21 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.

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Sources: [1]

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