Intertrac Unitrac UT 90 – specifications
Series: Unitrac
Build year not documented · Data origin: Reference work (Wikipedia/Wikibooks) · sources
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The Unitrac UT 90 is a tractor from the Unitrac series, manufactured by Intertrac. It belongs to the category of agricultural tractors and was produced in a small series of approximately 100 units. Designed as a basic tractor, it was primarily used for draft work and as a carrier vehicle for various mounted implements in agricultural practice.
Technically, the drive is based on a six-cylinder diesel engine with a displacement of 5,675 cm³. The rated power is 90 hp at a rated speed of 2,800 rpm. This engine configuration enables the handling of draft loads and the operation of mounted implements that require corresponding power transmission. Power transmission to the wheels is achieved via a gearbox offering eight forward gears. This number of gears allows for differentiated adjustment of driving speed to various soil conditions and working speeds, which is crucial for efficiency in field operations.
Within the series, the UT 90 is positioned clearly above the smaller UT 45 model, which is equipped with 45 hp and four cylinders. The UT 90 thus represents the more powerful variant in this specific product line. Tractors in this power class are typically suitable for cultivating medium-sized areas, the use of plows and harrows, and work with light to medium trailers. The higher power compared to the entry-level model expands the range of applications to more demanding draft work and heavier mounted implements.
Intertrac Unitrac UT 45 – water-cooled four-cylinder diesel tractor with 33.1 kW (45 hp) and an eight-speed gearbox for drawbar work on medium-sized plots, built in 1969.
The Unitrac UT 45, from 1969, is a four-cylinder diesel tractor with a water-cooled engine of 2,456 cm3 displacement, producing 33.1 kW (45 hp). Names such as "Unitrac" stood, with several makers of the period, for versatile base tractors that, besides classic drawbar work, also served as carrier vehicles for mounted implements.
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The four-cylinder, water-cooled engine of 2,456 cm3 sits in the class of medium-small field tractors of the late 1960s, its 45 hp sufficient for ploughing, harrowing and light trailer work on medium-sized plots. Power reaches the wheels through an eight-speed forward gearbox, giving a fine spread of travel speeds for this power class.
A water-cooled four-cylinder diesel of around 2.4 litres was, by the late 1960s, the standard power unit for the medium family farm: strong enough for a three-furrow plough, economical enough for daily yard use. The power take-off of such tractors mostly ran at the standard 540 rpm of the period, the three-point linkage to the ISO 730 categories.
On a tractor this old, the true value depends on the condition of the crankshaft, cylinder bores and injection pump, regardless of its paperwork. An eight-speed gearbox should be checked for clean engagement of every gear and for oil leaks at the shaft seals. Rust on sheet-metal parts and the condition of the brake linkage belong on the checklist too; parts for rare models of this kind are often only found through specialists.
Sources: SpecCodex-Register: Kennwerte des Modells Intertrac Unitrac UT 45
Technical data
Engine
| Power | 90 hp (66 kW)correct |
|---|---|
| Rated speed | 2,800 rpmcorrect |
| Rated speed | 2800/mincorrect |
| Cylinders | 6correct |
| Cylinders | 6 Hubraumcorrect |
| Displacement | 5,675 cm³correct |
Drivetrain and chassis
| Drive type | Getriebecorrect |
|---|
Origin and approval
| Units built | etwa 100correct |
|---|
Other data
| Getriebebearbeiten basis | 8vcorrect |
|---|
Frequently asked questions
How much power does the Intertrac Unitrac UT 90 have?
The Intertrac Unitrac UT 90 delivers 90 hp.
What engine does the Intertrac Unitrac UT 90 have?
6 cylinders, 5,675 cm³ displacement.
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.
- 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 12 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: Wikibooks Traktorenlexikon (CC BY-SA 4.0) (retrieved August 2026) · Values adopted and presented in our own form; changes from the source are possible. · Data sources and cross-checks
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