Zetor Parts Replacements

Parts for Zetor Tractors from TractorJoe

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Information on Zetor Tractor Models

First Tractors

The first Zetor tractor model was the Model 25, a four stroke, two cylinder diesel powered engine built in 1946. It came with independent braking, 2 reverse and 6 forward speeds and a differential lock that was a first among many tractor manufacturers of the time.

In the 15 years between 1946 and 1960, Zetor introduced a cheaper version of the Model 25 – the Model 15 that had several modifications from the earlier 25. The most notable difference was the 1 cylinder diesel engine that produced 15hp. The company also introduced the Model 25 A and the Model 25 K. The 25 K was specifically made for crop farmers as it had a higher ground clearance making it very efficient on flat land. The 25 A was a more comfortable and modern version of the Model 25.

Zetor stopped production of the 25 K and 25A tractors in 1961 after manufacturing and selling 158,570 units of the popular tractor. (source: http://www.zetorworld.com)

The Super Series

In 1955, Zetor announced that it would start selling the Zetor Super 35, a tractor with 42hp and a four-cylinder engine. 5 years later the company made the Super 55 that came with a 50hp engine. It had a lot more features that included an air compressor (no need to leave the field to blow up the tires), a differential lock ( the legacy from the Model 25), suspended front axle and a heated cab as an optional extra that farmers could add on purchase.

Zetor also provided the option of the Super P, a tracked tractor that was a souped-up version of the Super Series.

The company sold 106,811 Super Series tractors in the years between 1955 and 1968 making it one of the market leaders in the industry. (source: http://www.zetorworld.com) Nonetheless, the company is always performing research and development and soon came up with Unified Range I

Unified Range 1

Zetor first unified range was introduced in 1958. This meant that all the company’s tractors would henceforth be manufactured from the same components, even while having differences in features, power, and size.

The first tractor to be manufactured under the UR1 range was the Zetor 3011. It came with an engine that produced 2200rpm and 37hp coupled with a direct injection diesel engine, which was very futuristic for tractors of the time. Similar to the Model 25 it had two reverse and ten forward speeds two out of the five speeds at the optimum 2.5mph to 7.5mph, suitable for farm work.

Zetor also introduced other models at this time including 2011, which was a toned down version of the 3011. Also introduced in the same period were the half-tracked 4016 and 3016 that were useful in weak soil and snow and 2023, which was a narrow fully tracked model, and the 3017 with a lower center of gravity. They also produced a 4WD model, the 3045 (the front wheels only had the High box mode) and lastly the narrow orchards models – the 3013 and 2013.

The powerful and robust 5511 was manufactured in 1966 and became the first model stronger than the 4011. With many positive customer reviews from Zetor clientele, the company’s engineers decided to upgrade all their models to the more popular 5 series. As such, the 3011 was upgraded to 3511. The upgrades saw the new models shift to square bonnets rather than the more conventional round shape. This change also made the tractors look sturdier than previous models.

The company performed another tractor upgrade in 1972 after a review of their UR1 models. The review established that modern tractors needed more traction and load carrying capacity. As such, the upgrade gave the tractors stronger engines, front axles that could support stronger hubs, and a heavier machine to increase traction.

The 6711 and 5711 could come with double the number of speeds if the client opted for the torque multiplier extra. The torque multiplier gave the tractor a 23% increase in torque while decreasing the speed by the same percentage. Nonetheless, the extra gave the tractor 4 reverse and 20 forward speeds.

Unified Range 2

Heavy duty tractors became even more popular in the mid-sixties. With most of the UR1 Zetor models coming with between 25 and 60hp, most farmers in Central Europe saw them as lacking sufficient power or sturdiness. As such, Zetor came up with the UR2 range of tractors in 1968 to tap into the changing tastes of European farmers. Known as Zetor Crystal range, these tractors pioneered the integrated roll protection system and the flatbed cab. The Zetor Crystal was arguably the most technologically advanced tractor of the 60s.

Zetor cornered the market by making standard equipment what other tractor manufacturers provided as optional extras.

A decade after the introduction of the UR2 tractor, Zetor upgraded its crystal range of tractors by fitting them with 100hp turbochargers alongside its four-cylinder engine. The six-cylinder models could receive a boost of up to 160hp when fitted with a turbocharger.

The Zetor Crystal range was made up of the 12045, 12011, 10045, 10011, 8045, 80-11, and the 16045 that was to be later downgraded and sold as an auxiliary model, the 14045 in select countries such as England.

Zetor stopped the manufacture of the Zetor Crystal range of tractors in 1989.

Unified Range 3

In 1991, Zetor upgraded its range of tractors by coming up with the URIII. This range of tractors had machines that had engines with between 70 to 105hp. This range included the 10520, 9540, 9520, 8540, 8520, 7540, 7520, and the most powerful and sophisticated of the lot, the 10540.

In 1993, the company announced the ZETOR Major, which was an upgrade of the URI range. The ZETOR Major included the 7340, 6340, 6320, 5340, 5320, 4340, 4320, 3340, and 3320 models. The new models were sturdier and stronger making them useful even in poor weather conditions and terrains such as snow and the wind.

Starting in 1997, the ZETOR Major models were phased to be replaced by the newer URI models that went by the name ZETOR Super. The ZETOR Super had the 7321/41, 6321/41, 5321/41, 4321/41, 3321/41 models.

Now

Currently, Zetor has eight tractor models – The Forterra HD, Forterra HSX, Proxima Power, Proxima Plus, Proxima, Major, and the remake of the Crustal. As the most recent model, the recently re-launched Crystal is the most technologically advanced and robust tractor one can buy.

Rumor has it that Zetor is developing a new range of tractors that will have an engine producing approximately 180hp called the Maxterra. Nonetheless, this remains speculation as the company has yet to confirm the rumors.