This okara cat litter pellet machine in Japan project started from a very practical problem—what to do with large volumes of wet soybean residue. The client is not originally in the pet industry. Instead, they are a mid-sized tofu and soy milk processor located in the Kansai region, producing several tons of fresh okara every day.
This okara cat litter pellet machine in Japan project started from a very practical problem—what to do with large volumes of wet soybean residue. The client is not originally in the pet industry. Instead, they are a mid-sized tofu and soy milk processor located in the Kansai region, producing several tons of fresh okara every day.
For years, most of this okara was either sold at very low prices as livestock feed or simply disposed of at a cost. However, disposal regulations in Japan have become stricter, and transportation costs for wet biomass have increased significantly. The client realized that continuing this model would only reduce profitability.
At the same time, Japan’s pet market—especially for cats—has been shifting toward environmentally friendly and biodegradable products. The idea of using okara to produce cat litter wasn’t entirely new, but most local attempts relied on small-scale extrusion equipment with unstable output.
That’s when the client began searching for a more reliable okara cat litter pellet machine in Japan, eventually contacting RICHI Machinery for a solution that could transform their waste into a stable, sellable product.
Name:
okara cat litter maker
Country:
Japan
Date:
2025
Capacity:
1.0–1.5 T/H
Model:
MSZLH250
Main Motor Power:
22 kW
Raw Materials:
dried okara, corn starch, recycled paper
Pellet diameter:
4–5 mm
Unlike wood or mineral-based litter, okara has high moisture content (often 70–80% when fresh) and a loose fiber structure. It is difficult to pelletize directly without proper conditioning and moisture control.
The client had already tried simple drying and pressing methods, but the pellets either cracked easily or produced excessive dust. These issues made the product unsuitable for retail markets.
This is why they decided to invest in two units of okara cat litter pellet machines with conditioning systems. Instead of building a full production line from scratch, they integrated these machines into their existing facility, which already had drying and mixing equipment.
This was a new purchase, not a replacement. The pellet machines became the core forming equipment, allowing them to move from raw waste handling to finished product manufacturing.
The uniqueness of this okara cat litter pellet machine in Japan project lies in the raw material itself. Okara is soft, fibrous, and highly perishable, so the client needed a stable formulation to ensure consistent pellet quality.
After several rounds of testing with our engineers, the final raw material composition was determined:
The mixture is first homogenized in a mixer, then conditioned with steam to reach an optimal moisture level of 16–18%.
The final product is 4–5 mm diameter clumping cat litter pellets, specifically designed for indoor use in small apartments—a key consideration in Japan’s urban living environment.
For this project, we recommended a compact yet efficient model that matches the client’s medium-scale production goals. The selected configuration is:
Model: MSZLH250 okara cat litter pellet machine
The client purchased two identical machines, allowing them to reach a combined output of up to 2–3 tons per hour. This capacity is well-matched to their daily okara production volume, ensuring no raw material is wasted.
All equipment was shipped from Qingdao Port and delivered to Kobe Port, one of Japan’s major international shipping hubs.
Given Japan’s strict import standards and the client’s high expectations for equipment quality, we ensured that all components met industrial-grade requirements, and detailed documentation was provided for smooth customs clearance.
In actual operation, the okara cat litter pellet machine in Japan demonstrated strong adaptability to this challenging raw material. The conditioning system plays a crucial role by:
The ring die pelletizing process then compresses the material into dense, smooth pellets with minimal fines. Compared to the client’s previous attempts, the improvements were immediately noticeable: better pellet integrity, reduced dust, and more consistent size.
Before making the final decision, the client compared several suppliers from Japan, Europe, and China. Their main concerns were reliability, ease of operation, and adaptability to okara.
They ultimately chose RICHI for several reasons:
We also provided detailed guidance on drying parameters and formulation adjustments, which helped the client achieve stable production much faster than expected.
Although this project focuses on okara, the same type of okara cat litter pellet machine in Japan can handle a wide range of materials. This flexibility was another important factor for the client, as they are considering future product diversification.
Typical applicable materials include:
This versatility makes the machine not just a single-purpose investment, but a long-term production asset.
After launching their first batch of okara-based cat litter, the client tested the product through local distributors and small pet shops. The feedback was encouraging.
Japanese consumers showed strong interest in:
Within three months, the client began receiving repeat orders and started exploring OEM partnerships for export.
During a follow-up conversation, the client shared a very practical observation:
“At first, we were worried about how stable okara pellets could be, especially during transportation. But after using the okara cat litter pellet machine, the product holds its shape well. Even after long-distance delivery, the breakage rate is very low. That gave us confidence to scale up.”
They also mentioned that the machines are relatively easy to operate, even for workers without prior pelletizing experience.
This okara cat litter pellet machine in Japan project shows that even a single-machine investment can create a completely new revenue stream. Instead of treating okara as waste, the client now produces a value-added product with growing market demand.
More importantly, the project aligns with Japan’s emphasis on sustainability and resource recycling. Turning food industry by-products into eco-friendly pet products is not just profitable—it’s also future-proof.
Looking back, the success of this okara cat litter pellet machine in Japan project comes down to three key factors: suitable raw materials, the right equipment, and a clear market direction.
By choosing RICHI Machinery’s pellet solution, the client was able to bridge the gap between agricultural by-products and consumer-ready goods. And with two machines already running steadily, the next step is clear—expand production and reach a wider market.
For anyone considering entering the cat litter production business, especially with plant-based or food-industry residues, this case proves that the opportunity is real—and scalable—with the right equipment and support.
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