Clamping technology from EMUGE-FRANKEN in the production of transmission and clutch parts in the utility vehicle industry.

Clamping technology for tractors


Tractor, towing vehicle and other terms, some of them regionally dependent, have become established for the predominantly agriculturally used tractor. Yet the agricultural tractor is not only a reliable workhorse, but also sheer fascination: massive construction, challenging operating environment and, last but not least, the powerful technology "under the bonnet" sets your heart racing.

We accompany our colleague Harald on a drive with his John Deere 5100R and learn a lot about the drive, handling and benefits of tractors. In addition, our colleague explains which clamping devices EMUGE-FRANKEN uses in the production of transmission and clutch parts.

History and today's designs


While the first tractors were equipped with steam engines at the beginning, new performance levels were reached from 1900 onwards with the increasingly widespread combustion engines. High torques at low speeds were the hallmark of earlier models. Our colleague is also attracted to classic cars: "Our Ford Dexta has been in reliable service for 54 years. Back then, bought from my grandpa, it was technically state-of-the-art with a hydraulic rear linkage, PTO and an eight-speed gearbox, and with its 35 hp it was already a really "big one". It was used for all kinds of work: whether in front of the plough or the combine harvester, which was still towed at the time."

But we are more interested in the tractor we are sitting on. Built in 2015, this is clearly one of the modern designs, and in every respect: "Modern tractors are multi-purpose equipment carriers with often well over 100 kW of power, which can also drive fast on the road!"

The heart: a powerful transmission


The tractor has a powerful transmission to be able to work optimally in the selected power range. In addition to its enormous size, the number of gears is particularly impressive, which can range from eight forward and four reverse gears to 60 or more forward and reverse gears.

We ask why it needs so many gears: "Such a gearbox allows a speed range from a few metres per hour up to 80 km/h!". So working in the fields for hours at walking speed and a brisk drive home after the work is done are not mutually exclusive.

More and more tractors are equipped with a continuously variable transmission. Comfortable operation and smoother movements make this design the bestseller among the new tractor generations. The driver can benefit directly from this: "Gear changes are no longer necessary, the power remains at constant level and starting, braking and turning is very easy!"

The basics: headstock and tailstock

The "headstock" (C) is the side of a processing machine where the main spindle and drive are found. The "tailstock" (A) is the side of a machine tool used to support the workpiece (B). The arrangement described does not necessarily have to be vertical. Horizontal arrangements are also possible.

Clamping devices for two clamping diameters


We get a brief introduction to tailstock and headstock sides of machining centres, see previous paragraph, during the amazingly smooth ride. We need this basics know-how to understand how parts for the tractor's drive train are manufactured. Our colleague Harald works in the clamping technology department of EMUGE-FRANKEN. He designs clamping devices for the gearing of clutch and gear wheels together with other experts.

One challenge here is the precise clamping of workpieces over two clamping diameters. "The basis of the clamping concept is a two-part clamping mandrel consisting of a spindle and a tailstock side. The two sides are moved apart and then together again for loading and unloading the workpiece. Clamping elements in both sides of the mandrel grip the workpiece at precisely defined diameters". Additional cover rings that cover critical areas are assembled to avoid soiling or even damaging bores in the workpiece.

We are your partner!


We are your partner when it comes to finding the decisive "micron" in the interlocking of workpieces. Our clamping devices are the guarantee for high-precision concentricity and critical tolerances!

Ask our contact persons, we are ready!