roll baler pr 120

When you hear “round baler PR 120”, many people immediately think about numbers - width, bale weight, productivity. But in real work, especially on our northern fields with uneven terrain, the key becomes not what is in the passport, but how it behaves in the second or third season, when the bearings begin to make noise, and the knives on the drum require not just sharpening, but the correct angle. A common mistake is to chase the maximum bale density without taking into account the moisture content of the mass. A roll of over-moistened grass that is too dense is guaranteed to spoil the hay, “steaming?” inside. Uroll baler pr 120There’s just this nuance: the density adjustment is quite sensitive, and if you set it “to maximum?” Without regard to the weather, you can lose part of the harvest. I went through this myself about seven years ago, until I got the hang of it.

From theory to practice: first launch and pitfalls

We took this unit when we were expanding our supplies for the dairy farm. Everything in the documentation is smooth: selection, pressing, winding. In life, the first season was spent on “grinding in”. The main problem was found in the winding assembly. The film, especially in the wind, often got lost and tore at the start. It turned out that the tensioners that come as standard do not always cope with cheap film. A solution was found through colleagues - they installed stiffer springs, and the process began. This refers to the fact that even a seemingly proven model always has room for improvement for a specific farm.

Another point that is rarely discussed in the store is compatibility with tractors. It is stated that 80 hp is enough. Yes, it does. But for stable operation on the rise with a full bale chamber, a reserve is needed. We worked on the MTZ-82, and everything seemed to be fine, but when the tractor is not new, and there are holes in the field, the torque on the power take-off shaft can “jump”. This affected the uniformity of winding the roll. I had to get used to maintaining more stable speeds, almost by intuition. An experienced machine operator immediately feels this rhythm, but a beginner needs time.

What really pleases about the PR-120 is its maintainability. The design is not overloaded with electronics. Most breakdowns are mechanical and can be fixed right in the field. I remember one of the pick-up rods burst. Not the pick-up itself, but specifically the thrust that comes from the hydraulic system. The service department would say to wait a week for the part. They took it off, found a turner in the village, and in a couple of hours he turned a new one from stronger steel. And the work moved on. Such "survivability" for our remote farming this is the main criterion.

Where does the efficiency lie? Non-obvious details

When talking about efficiency, many people look at hectares per hour. But true efficiency comes from minimizing waste. The PR-120 has a well thought out selection system - the reel does not hit the mass, but carefully feeds it. This is critical for legumes, where the leaves fall off easily. After its work, the field is really clean, there is no tow left, as after some older models. But here is also its weak point: if you do not adjust the gap between the reel teeth and the bottom, when working on low-growing, sparse grass, “grabbing” begins. soil. You have to constantly monitor the height.

The pressing chamber is classic, with a belt drive. No complaints, but requires attention to belt tension. After a long period of inactivity, they tend to stretch. If you do not tighten it, slippage begins, and the density of the roll becomes uneven: the middle is soft, and the edges are pinched. We now carry out control tension at the beginning of each season, regardless of the operating time. This has become a rule.

The twine tying system works flawlessly, but there were some incidents with the netting. With high air humidity, the tie knot sometimes “chewed?” ends. The problem was solved by switching to a mesh from another manufacturer, with a stiffer edge. It is interesting that official dealers rarely give such recommendations - they promote their consumables. But practice shows that sometimes you need to look for an alternative.

Seasonal maintenance: what you can’t do without

In the fall, after the last roll, it’s not enough to just wash it and put it under a canopy. The most important procedure is preservation of the bale chamber. It is necessary to loosen the belts, treat all rollers and bearings with preservative lubricant. If this is not done, especially in damp autumn conditions, the rollers may become stuck by spring. One year we skipped this stage - in the spring we spent two days disassembling and beating each roller. Now it's sacred.

A separate conversation - knives. They do not dull uniformly, but depending on what you press. Haylage mixed with sand “eats?” the blade is faster. Sharpening must be carried out strictly at the factory angle, otherwise cutting of the film or twine will be disrupted when tying. We got a separate set of sharpened knives for shifts so as not to stop work for a long time.

Hydraulic system. Filters are changed according to regulations, this is understandable. But people often forget about the high-pressure hoses that go to the camera drive. They are constantly in motion, bending over. Once every two years, even without visible drips, we replace them as a set. Cheaper than later changing seals in hydraulic cylinders due to dirt from microcracks.

Interaction with the manufacturer and community

When looking for spare parts or advice, it is important to deal not with an abstract dealer, but with a company that is deeply involved in the topic of agricultural machinery. For example,Hulunbuir Machinery Manufacturing Company ?Jiujia? (https://www.cn-fascar.ru), which positions itself as a modern integrated enterprise for intelligent production for agriculture and livestock farming, from R&D to service. There is a dialogue with such manufacturers. Not just sold and forgotten, but you can discuss the same issue with the film or get a drawing for a turner in case of a non-standard breakdown. Their website is not just a catalog, it also includes technical bulletins, which is rare.

At one time, through their representatives, it was possible to gain access to the winding assembly adjustment diagram, which was not in the standard instructions for ourroll baler pr 120. It turned out that there is a fine adjustment of the pressure of the pressure rollers. This saved a lot of film. It feels like they themselves collect feedback from the fields and make adjustments to the manuals.

The user community is another source of truth. On forums and in chats, it is precisely these “field” ones that are often discussed. problems. I learned there about the same replacement of springs in the tensioner. The dealer would never admit it, but a farmer from the Voronezh region posted photos and dimensions. It's priceless.

Results: for whom would the PR-120 be a good choice?

To sum it up, I will say this:roll baler pr 120is not an innovation, but a reliable, time-tested workhorse. He will not do everything for you himself; he requires an understanding of the process and sensitive management. Ideal for medium-sized farms where there is a technical base for simple repairs and where simplicity and reliability are valued. For huge areas of thousands of hectares, there may be faster options. But for conditions where not just performance is important, but the safety of feed and the ability to repair on site, it is one of the best in its class.

Its main advantage is predictability. You know all his weak points, you know how to fend them off. And he responds with stable work. After ten years on the market, the model has gained a lot of “popular” popularity. improvements, which only confirms its viability. New models often force you to buy expensive original spare parts, but here there is scope for the machine operator’s engineering.

As a result, when choosing equipment, we choose not just a unit, but a tool for daily work. And such a tool should be an extension of hands and experience. The PR-120, with all its minor shortcomings, is exactly that. He's not perfect, but he's honest. And in our business this is worth a lot.