This is a project regarding a small-bale straw chopper in Belgium. The facility had been using an old stationary bale breaker that was originally designed for large square bales of hay, not the dense, fibrous flax straw bales that are common in Belgium's flax-growing regions.
Small bale straw chopper in Belgium has become a vital piece of equipment for specialty agricultural operations in the Flanders region, where intensive farming and value-added processing go hand in hand.
A mushroom compost preparation facility located near the town of Mechelen, in the province of Antwerp, recently purchased two units of the YPPK-2600 small bale straw chopper to solve a specific problem: processing flax straw bales into consistent 20-30mm particles for mushroom substrate, while also producing high-quality horse bedding from wheat straw.
The facility had been using an old stationary bale breaker that was originally designed for large square bales of hay, not the dense, fibrous flax straw bales that are common in Belgium's flax-growing regions.
Name:
bale straw chopper
Country:
Belgium
Date:
2025
Capacity:
Flexible
Model:
YPPK-2600
Main Motor Power:
55 kW
Raw Materials:
Flax straw bales, Winter wheat straw bales
Max processing diameter:
1800 mm
That bale crusher machine would overheat and jam constantly, producing an inconsistent chop that ranged from dust (bad for mushroom mycelium) to long strands (bad for substrate structure).
The facility owner, who also supplies bedding to equestrian centers in Brussels and Antwerp, searched online for small bale straw chopper options and found RICHI Machinery through a European agricultural equipment directory.
He purchased two YPPK-2600 units as standalone replacements for his old machine—not as part of a full production line, but as dedicated choppers for two different product streams.
Belgium has a long history of flax cultivation, particularly in West Flanders and East Flanders, where the sandy loam soils and maritime climate produce high-quality flax for linen production.
After the flax fibers are removed for textile manufacturing, the remaining straw—known as flax shives or flax straw—has traditionally been burned or landfilled. However, environmental regulations now restrict burning, and landfilling is expensive.
Mushroom growers in Belgium have discovered that chopped flax straw makes an excellent substrate component because it has a low bulk density and good water-holding capacity. The problem is that flax straw is tough and fibrous, with long strands that wrap around conventional chopper rotors.
The Mechelen facility processes approximately 500 tons of flax straw per year for mushroom substrate, plus another 300 tons of wheat straw for horse bedding. The mushroom substrate is sold to button mushroom farms in the Limburg region, while the horse bedding is delivered to stables in Brussels, Antwerp, and Ghent.
The facility owner was frustrated with his old bale breaker because it could not produce a consistent particle size from flax straw—some output was dust (which clogs the mushroom substrate and promotes contamination), and some was strands longer than 100mm (which prevent proper mycelium colonization).
He had been searching for a small bale straw chopper that could handle both flax straw and wheat straw without constant adjustment.
The RICHI YPPK-2600, with its 55kW motor, 36 carbide-tipped hammers, and gear external chain rotary cutting, was designed specifically for fibrous materials. He ordered two YPPK-2600 units—one dedicated to flax straw for mushroom substrate, the other to wheat straw for horse bedding.
After discussion of the specific challenges of processing flax straw for mushroom substrate, the facility selected the YPPK-2600 model with modifications for fine particle control:
| Specification | YPPK-2600 Value | How It Matches Belgian Needs |
|---|---|---|
| Power (kw) | 55 | Sufficient for flax and wheat straw |
| Max processing diameter (mm) | 1800 | Fits the standard 1.5m-1.6m round bales in Belgium |
| Number of hammers | 36 | Provides aggressive action for tough flax fibers |
| Overall dimensions (mm) | 3800*2600*2650 | Fits in the facility's covered processing area |
| Equipment weight (T) | 2.2 | Heavy enough for stable operation |
The primary materials processed daily at this Belgian facility include:
The target output sizes are critical: 20-25mm for mushroom substrate to provide proper air spaces for mycelium growth, and 30-40mm for horse bedding to maximize absorptive capacity while minimizing dust.
Flax straw is notorious for wrapping around rotating machinery. The long fibers have high tensile strength and low shear resistance until they are fully broken.
A standard hammer mill will often just push the flax bale through without cutting the fibers, or worse, the fibers will wrap around the rotor shaft and cause a catastrophic jam.
The YPPK-2600 solves this with two key features working together:
The damping plate creates a pinch zone that holds the flax fibers against the hammer tips long enough for the hammers to actually cut rather than just pull. The plate is positioned at a calculated angle that optimizes the dwell time of the material in the cutting zone.
The gear external chain rotary cutting at the feed intake pre-cuts the outer layer of the bale before it reaches the hammer zone. This pre-cutting shortens the fibers immediately, reducing the opportunity for wrapping. The rotary cutters are made from hardened steel with a serrated edge that grips the fibers rather than pushing them.
For the Belgian facility, this combination means:
Flax fibers are challenging for standard hammers because the fibers are both tough and slippery. Standard hammers tend to "smear" flax fibers—crushing and flattening them rather than cutting cleanly. Smashed fibers are not ideal for mushroom substrate because they compact and reduce air spaces.
The YPPK-2600 hammers are designed specifically for tough, fibrous materials:
The facility owner reported that after processing 300 tons of flax straw (approximately 400 bales), the hammers showed less than 2mm of wear. The output particle size remained consistent throughout the run, with no increase in dust or longer strands.
The thickened transmission chain is also important for flax processing because the material creates higher than normal resistance. The heavy-duty chain on the YPPK-2600 has not required adjustment after 600 hours of operation.
Once the small bale straw chopper reduces the material to the target size, the facility uses it for two distinct products:
1. Mushroom substrate for button mushroom farms: The chopped flax straw (20-25mm) is mixed with chicken manure, gypsum, and water, then pasteurized and inoculated with mushroom spawn. The uniform particle size ensures proper air spaces throughout the substrate, allowing the mycelium to colonize evenly.
The facility's mushroom grower customers have reported 10-15% higher yields since switching to the YPPK-2600-processed flax straw, primarily because the consistent particle size reduces the risk of contamination in the substrate.
2. Premium horse bedding for equestrian centers: The chopped wheat straw (30-40mm) is fluffy, absorbent, and dust-free. The facility bags the bedding in 20kg plastic bags and sells it to riding schools and private horse owners.
The product has been well received because the 30-40mm particle size is long enough to be absorbent but short enough to be easy to clean out of stalls.
The facility has increased its horse bedding sales by 40% since switching to the YPPK-2600 because the product quality is visibly better than what competitors offer.
3. Mushroom substrate for specialty mushrooms: The facility is experimenting with using a 15-20mm chop of flax straw for oyster mushroom cultivation.
Oyster mushrooms prefer a finer substrate structure than button mushrooms. The YPPK-2600 can achieve this finer chop by using a different screen (not included in the standard package but available as an option).
Belgium's diverse agricultural and industrial sectors offer many applications for a small bale straw chopper like the YPPK-2600:
The two YPPK-2600 small bale straw choppers were shipped via ocean freight from RICHI's facility in Qingdao.
The total transit time from factory gate to yard delivery was 41 days, including customs clearance at Antwerp. RICHI provided full documentation including CE declaration, certificate of origin (for EU tariff rates), and a detailed commercial invoice in English, French, and Dutch.
The facility owner provided detailed feedback during a follow-up video call (summarized from a recorded conversation in Flemish, translated):
"I have been in the mushroom substrate business for 15 years. I have tried every type of chopper on the market—German, Dutch, Italian. Most of them work fine for wheat straw, but they all struggle with flax straw. Flax is just different. The fibers are long and they want to wrap around everything.
Then I found the RICHI YPPK-2600. The first time I ran a flax straw bale through it, I was skeptical. But the machine grabbed the bale and pulled it straight in. No wrapping, no jamming, no dust. The output was perfect—20-25mm, just like I wanted.
The mushroom growers I supply have noticed the difference. One of them told me his yield went up by 12% after he started using my flax substrate. The mycelium colonizes faster and more evenly because the particle size is consistent.
The horse bedding side of the business has also grown. We process wheat straw at 30-40mm, and the output is fluffy and absorbent. One of my customers—a riding school in Brussels—said it is the best bedding they have ever used. They switched from a competitor's product after trying one pallet from us.
We have processed about 800 bales through the two machines in the past year. The only maintenance has been greasing the bearings and adjusting the chain once. The hammers are still on the original set, and they still cut cleanly.
One suggestion for other buyers: get the dust control system if you are processing dry straw for bedding. We did not order it initially because we mostly process flax for mushroom substrate, but when we run dry wheat straw, the dust is significant. I added the dust control system as a retrofit, and it made the work environment much better.
Would I buy from RICHI again? Yes. In fact, I am looking at one of their hammer mills to grind the flax fines into a powder for a new mushroom product I am developing. The support has been good—they answer questions quickly, and they helped me with the retrofit documentation."
The facility owner evaluated three potential solutions before choosing the RICHI YPPK-2600 units:
| Option | Price (EUR) | Lead Time | Key Limitation |
|---|---|---|---|
| New Dutch straw chopper (local brand) | €35,000 | 6 weeks | Single machine, struggles with flax |
| Used German bale processor | €18,000 | Immediate | High hours, unknown condition, no warranty |
| Two RICHI YPPK-2600 units | €32,000 total | 10 weeks | Two units, new with CE cert, spare parts included |
For approximately the same price as a single new Dutch chopper, the Belgian facility received two units. The ability to dedicate one machine to flax straw (mushroom substrate) and one to wheat straw (horse bedding) has eliminated cross-contamination and allowed him to run both product streams simultaneously.
The perceived risk of buying direct from China was addressed through:
To ensure this Belgian customer felt confident operating 8,000km from the factory, RICHI Machinery delivered a customized service package:
The facility owner later noted that the quality of the documentation and the responsiveness of the support team made him feel as though the machine had been supplied by a local dealer. He has since referred two other Belgian mushroom substrate producers to RICHI.
The small bale straw chopper in Belgium represented by this Mechelen facility installation proves that heavy-duty Chinese equipment can handle challenging materials like flax straw while producing consistent particle sizes for specialty applications like mushroom substrate and horse bedding.
The YPPK-2600 processes tough flax fibers that defeat standard choppers, delivers consistent 20-25mm output for mushroom substrate and 30-40mm for horse bedding, and withstands daily use without excessive maintenance.
For any Belgian mushroom substrate producer, horse bedding manufacturer, or agricultural waste processor currently struggling with flax straw or inconsistent particle sizes, the YPPK series offers a heavy-duty, cost-effective solution.
The ability to purchase two units for the price of one European machine provides operational flexibility and the ability to process multiple materials simultaneously.
Contact RICHI Machinery directly for a site assessment, to request hammer samples for flax testing, or to arrange a conversation with the Mechelen facility owner about his experience.
The return on investment is clear: consistent product quality, higher customer satisfaction, lower maintenance costs, and machines built to last through many Belgian harvest seasons.
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