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syjx@shengyangringrollingmachine.com
2026-02-07
You know, when colleagues ask aboutspare parts manufacturers Sipma, many people immediately go to Alibaba. This, of course, is logical, but often it is not the factories themselves that get out there, but resellers or large traders who may not know all the nuances specifically regarding spare parts for Polish balers. I went through this myself.
The first thing you come across is that Sipma itself is not a Chinese brand. This is Polish technology. Accordingly, in China no one officially produces spare parts under this name. We are talking about the so-calledSipma spare partsas about analogues, compatible parts. And this is where the fun begins: the search is not based on the brand, but on OEM factories that make similar units - shafts, bearing units, belts, knives for the cutting apparatus - for the local market or for export.
My first approach was straightforward: I searched for ?Sipma parts China? and called contacts. In 8 out of 10 cases, these turned out to be trading companies in Guangzhou or Yiwu, which readily said “yes, we do?”, but when requesting technical documentation or drawings for clarification, they sent catalogs with general pictures. It quickly became clear that they simply buy somewhere in the periphery and resell. Quality lottery.
The mistake was that I was looking for “Sipma”. It was necessary to look for manufacturers of components for agricultural machinery in general. For example, the same pulleys or chain drives. Many Chinese factories make parts based on samples, and if you bring or send them a broken original part, they can make an analogue. But this is the next level of work.
Then I started going to exhibitions, like the China Agricultural Machinery Show in Zhengzhou. The conversations there are different. Not “how much is needed?”, but “what material, processing, tolerances?”. At one of these exhibitions, it seems in 2019, I met a technologist from a factory in Shandong. We talked about bearing units for baler shafts. He said directly: “We don’t make for Sipma, but we make similar units for several Chinese brands. The design is often unified; the landing dimensions may be the same? This was the key.
After that, I began to search not by the name of the equipment, but by specific parts and regions. Shandong, Hebei, Jiangsu - there is a traditionally strong agricultural machinery manufacturing base there. I looked for factories through local B2B portals, but not global ones. For example, through sites on baidu.com, which in itself was a task for our Russian-language office.
One specific example is worth mentioning here -Shandong Shenyang Mechanical Equipment Co.,Ltd. I came across their Russian-language websitehttps://www.shengyangjxgroup.ruquite by accident when I was looking for information on processing metal structures. In the company description,Shandong Shenyang Mechanical Equipment Co.,Ltd is a high-tech enterprise, which specializes in the production and processing of parts for heavy equipment. I called. He explained the task - we needed an analogue of a shaft with a gear for a baler (attached a photo and dimensions from the original Sipma part). They did not immediately say “yes?”, they asked for time to study. This is already a good sign - it means there is an engineering department that is looking into it.
The first is the willingness to work according to a model, and not just a drawing. Many compatible spare parts are made just like this: you send the broken part, they take measurements, offer material and technology.Shandong Shenyang Co.,Ltdjust went down this path. They asked me to send a sample to their office in Qingdao.
The second is questions about heat treatment and coatings. This is critical for shafts and knives. Our conversation with their engineer went into detail: “Your original was cemented?” What is the hardness on the surface? Without these questions, you can get a part that looks similar, but breaks ten times faster.
Third - trial batch. Never order a container right away. We ordered 5 pieces to try. They came, installed it, and they work. But there was a nuance with the seat for the bearing - it had to be modified a little. The plant responded normally and made changes to the technical process for the next batches. This is what working withmanufacturer, and not with a reseller.
Of course, not everything is so smooth. I also went to a factory in Hebei, which promised to make knives for the cutting apparatus. They made it from the wrong steel, although everything was “correct” in the documentation. Then it turned out that they bought blanks from a neighboring workshop and simply processed them. There was no quality control. Wasted time and money.
Therefore, now I always ask to show the workshop, if possible, or at least a video of the production of a specific part. This is especially true for forging and heat treatment. Many small factories subcontract these processes, and it is difficult to track quality.
Another way is through Polish colleagues. Ironically, sometimes it’s easier to find who repairs Sipma in Poland and ask them where they get non-original but reliable spare parts. Often they themselves contact the same Chinese manufacturers, but through their trusted intermediaries. The price will be higher, but there will be fewer risks.
Based on my experience, I built such a scheme for myself. I don't claim to be true, but it works.
1. Forget about searching ?Sipma?. Determine exactly what part is needed (shaft, bearing assembly, gearbox, knife), take all possible dimensions, photos, and if possible, send a sample.
2. Look for manufacturers of this category of parts in key industrial regions. Sites like the samehttps://www.shengyangjxgroup.ruis a good starting point if they have a specialization and clear contacts.
3. The first contact is technical. Ask questions about the material, processing, control. If a manager cannot contact a technologist or engineer, this is an alarm bell.
4. A trial batch is sacred. And test in real conditions, and not just “by eye”.
5. Don't chase the lowest price. A difference of 10-15% is often precisely the same heat treatment or higher quality steel that will give the part a service life.
RegardingShandong Shenyang Co.,Ltd, then for us they have become one of the reliable partners for shafts and some other forged parts. Not in all positions, of course, but where we agreed on the terms of reference. Their website is more of a business card, all the real work was done by mail and WeChat with their engineer Li. The main thing is that we managed to establish a process: we send the worn-out original, they make an analogue, test it, make changes. No fuss.
So, answering the question “where can I find it?” - look not for the name, but for the specialization of the plant and its willingness to understand the task. And be prepared for long correspondence, trial batches and the need to delve deeply into technical details. This is the only way to get normalSipma spare partsfrom China, who will work for more than one season.
