前川工業所 List of Products and Services

The roll breaker is a double-roll type crusher and grinder that crushes materials using two rolls. It is widely used for secondary to tertiary crushing of hard raw materials such as metallic silicon, ceramics, alloys, slag, fired products, coal, coke, and concrete waste. Due to its simple structure and extremely high efficiency, it boasts a delivery record of over 1,000 units, making it the leading supplier in the country. ★ Crushing tests are currently being conducted! Selecting a crusher can often be difficult based on the material to be processed, processing capacity, and usage conditions, so we have various actual machines for crushing permanently available and can conduct crushing tests upon request. We will help resolve your issues with "crushing" and "breaking." 【Features】 〇 Compared to conventional impact crushers, maintenance costs can be reduced by about 20%. 〇 By setting the roll gap to 0.5mm, it is possible to produce powders under 1mm at low cost. 〇 The crushed product has a low amount of fine particles (powder) and can be crushed to the desired particle size. We will be exhibiting at the "25th International Powder Technology Exhibition Tokyo 2024" (1B-18). We look forward to your visit. *For more details, please contact us or download the catalog to view.

Maekawa Industrial's "Hammer Crusher" is active in a wide range of fields, handling everything from hard materials like various types of glass and ceramics to soft materials such as coal and stone. With a diverse lineup capable of accommodating both hard and soft raw materials, and a robust design backed by proven results and experience, it has received high praise under the harsh usage conditions of various industries. ★ Test machines are available for rent. (70,000 yen/day) Please take this opportunity to try it out. 【Features】 ■ High crushing ratio ■ Low equipment cost compared to crushing capacity ■ Particle size adjustment possible with the grates (screen bars) ■ Easy grate replacement (patented!) * For more details, please download the catalog or feel free to contact us.

The "Single Roll Crusher" from Maekawa Manufacturing is a crushing machine designed to crush materials by feeding them between a roll with protrusions and a receiving tooth. It is widely used for crushing relatively soft materials such as coal, coke, and incineration ash, allowing for the reduction of large lumps to smaller pieces in a single crushing operation. The structure is simple, achieving excellent durability and safe operation. In the event of foreign material intrusion or overload, the springs activate to prevent damage. 【Features】 - Capable of crushing large lumps with a single unit - Suitable for crushing relatively soft materials - Can easily crush materials with some stickiness - Simple structure with outstanding durability - Easy maintenance, inspection, and upkeep *For more details, please refer to the PDF document or feel free to contact us.

Our company is a specialized manufacturer of crushers and grinders, established in 1946. We design, manufacture, and sell various types of crushers, as well as design and construct various powder plants! All used machines we handle are disassembled, maintained, and tested before sale! *(6-month warranty) Please understand that we may run out of stock. Additionally, we only accept trade-ins and purchases of used machines that are our own products, as a general rule. 【Examples of Used Machines for Sale】 ■ Fine Jaw Crusher SCL-2415 (for 37kw) ■ Fine Jaw Crusher SC-1610 (for 15kw) ■ Fine Jaw Crusher SW-3608 (for 37kw) ■ Fine Jaw Crusher SC-1007 (for 7.5kw) *The available products may change depending on the time. Please contact us for more details.

This is a small two-axis roll-type crusher suitable for breaking down large lumps. It can be used for primary crushing of large raw materials and as a pre-treatment for recycling various products, allowing for the crushing and breaking of a wide range of materials. 【Features】 - Particle size can be adjusted after crushing by changing the roll gap. - All cutting edges of the crushing blades are treated for wear resistance. - The machine has a low height, making it convenient to connect with upstream and downstream processing systems. - The low-speed crushing method minimizes noise and vibration. - It has a simple structure that requires low maintenance. 【Crushing Test Information】 We also conduct crushing tests and have more than 10 testing machines available, including roll breakers, jaw crushers, hammer crushers, small tooth crushers, small grinders, and vibrating feeders with hoppers! *For more details, please refer to the PDF or feel free to contact us.

The Maekawa "Hammer Crusher," boasting 70 years of achievements and experience, is active in industries dealing with hard materials such as various types of glass and ceramics, as well as soft materials like coal and coke. Furthermore, it offers a diverse lineup capable of handling materials from hard to soft! 【Features】 ■ High crushing ratio ■ Low equipment cost compared to crushing capacity ■ Granularity can be adjusted with the grate (screen bar) ■ Easy grate replacement (patent registered!) 【Application Achievements】 ■ Various types of glass ■ Incineration ash melting slag, incineration residues ■ Ceramics and pottery ■ Rocks, gravel, ores, abrasives, etc. ■ Ferroalloys and rare metals ■ Coal, coke, limestone ■ Carbon, chemical raw materials ■ Bricks, gypsum boards ★ Test machines are available for loan. Please take this opportunity to try it out. 【We will exhibit at the 30th 2021 NEW Environment Exhibition】 Venue: Tokyo Big Sight Dates: March 17 (Wednesday) to March 19 (Friday) Booth Number: West 1-034

This is a small two-axis roll-type crusher suitable for breaking down large lumps. It can be used for primary crushing of large raw materials and pre-processing for recycling various products, allowing for the crushing and breaking of a wide range of materials. 【Features】 - Particle size can be adjusted after crushing by changing the roll gap. - All cutting edges are treated for wear resistance. - The machine has a low height, making it convenient to connect with upstream and downstream processing systems. - The low-speed crushing method minimizes noise and vibration. - It has a simple structure that requires low maintenance. *For more details, please refer to the PDF materials or feel free to contact us.

Maekawa Industrial Co., Ltd. has been challenging itself to create reliable products since its establishment in 1946 as a specialized manufacturer of crushers and grinders. Starting with machinery for mining, we have received high praise across a wide range of industries, including crushing machines for crushed stone, glass, various ores, coal, and coke, as well as in power generation, steelmaking, ceramics, and environmental sectors. With "trust" based on experience and achievements, and "high technology" backed by patents, you can rely on Maekawa Industrial Co., Ltd. for various crushers and grinders. 【Business Activities】 ■ Manufacturing and sales of complete crushing plants ■ Manufacturing and sales of crushers ■ Manufacturing and sales of vibrating screens ■ Manufacturing, sales, and rental of various industrial machinery ■ Machinery installation contracting ■ Brokerage and sales of used machinery ■ Crushing and grinding services for various materials ■ Wholesale of machinery and equipment *For more details, please refer to the PDF document or feel free to contact us.

This catalog introduces the crushing and grinding products handled by Maekawa Manufacturing in three languages (English, Chinese, and Japanese). Featuring high crushing performance, durability, and reliability, we offer a wide range of products including the "Roll Breaker" and the compact and robust "Small Tooth Roll Crusher." Thanks to the extensive achievements and high technical capabilities we have cultivated since our founding, our crushers are actively used worldwide across various industries and for a variety of raw materials. 【Featured Products】 ■ Roll Breaker (Double Roll Crusher) ■ Small Tooth Roll Crusher ■ Crusher ■ Hammer Crusher ■ Jaw Crusher ■ Roll Jaw Crusher *The downloadable PDF document is a digest version. Please contact us if you would like the complete version.

The RG-type vibrating screen, commonly referred to as the Gyrex screen, is a vibrating screen that our company has perfected and patented through years of research and experience. In its installed state, the inclination angle can be adjusted to approximately 0 to 25 degrees, and thanks to its robust basic design, it offers exceptional durability in harsh environments. 【Features】 ■ High processing capacity and excellent screening efficiency ■ Minimal clogging ■ Difficult to transmit vibrations externally ■ Low failure rate ■ Can be used in both forward and reverse rotation ■ The inclination angle of the screen frame can be adjusted while installed ■ Easy replacement of the screen mesh *For more details, please refer to the PDF document or feel free to contact us.

This is a small two-axis roll-type crusher suitable for breaking down large chunks. It can be used for primary crushing of large raw materials and as a pre-treatment for recycling various products, allowing for the crushing and breaking of a wide range of materials. 【Features】 - Particle size can be adjusted after crushing by changing the roll gap. - All cutting edges are treated for wear resistance. - The machine has a low height, making it convenient to connect with upstream and downstream processing systems. - The low-speed crushing method minimizes noise and vibration. - It has a simple structure that requires low maintenance. *For more details, please feel free to contact us.*

This is a small jaw crusher designed for laboratories with a robust design suitable for crushing hard materials. The crushing chamber features a double-hinged structure, making it easy to clean for each type of material. The product particle size can be easily adjusted by the gap between the jaws. 【Features】 ■ Small jaw crusher for laboratories ■ Particle size after crushing is approximately 2-3 mm ■ Product particle size can be easily adjusted by the jaw gap ■ Robust design makes it suitable for crushing hard materials ■ Double-hinged structure allows for easy cleaning for each test material *For more details, please refer to the PDF document or feel free to contact us.

Maekawa Manufacturing's crushers and grinders combine high reliability and durability due to their robust construction with excellent crushing performance. We have sold over 1,700 jaw crushers and more than 1,000 roll breakers, and in recent years, our hammer crushers have been particularly active in industries and applications related to environmental recycling. ★ We are currently offering a free catalog that provides an overview of our crushers and grinders, unique to a specialized manufacturer! We also conduct grinding tests and contract grinding. 【Featured Products】 ● Roll Breaker ● Small Tooth Roll Crusher ● Disintegrator ● Hammer Crusher ● Jaw Crusher ● Roll Jaw Crusher * The catalog is available in Japanese, as well as in English and Chinese.

With a robust structure and excellent low maintenance, the unique teeth with outstanding wear resistance are used under harsh conditions in various fields. * Staggered tooth structure. Ensures reliable crushing without bypassing the material. * Two tooth rolls are driven in sync. * The tooth rolls are made of cast steel, with all tips subjected to wear-resistant treatment. * Three types of roll gaps are available according to crushing specifications. * The base frame features a robust structure made of cast iron, providing stable crushing performance and durability even under harsh conditions. * We also have a proven track record of powerful medium and large machines, so please contact us for inquiries.

A dual-axis roll crusher that excels in crushing large chunks of waste concrete, waste asphalt, and more. 【Features】 ■ Robust design that can withstand harsh usage ■ Simple structure that requires low maintenance ■ By significantly increasing the number of teeth, top size is reliably regulated. ~ Information on Crushing Tests ~ We have roll breakers, jaw crushers, hammer crushers, and small-sized toothed roll crushers available for continuous crushing tests. * Our company will be exhibiting at the "2025 NEW Environmental Exhibition" held at Tokyo Big Sight from May 28 (Wednesday) to May 30 (Friday). (Booth number: A316) We sincerely look forward to your visit. For detailed specifications and drawings, please download the catalog or contact us directly.

The "Joke Crusher" utilizes high-quality Japanese cast steel for its frame and achieves outstanding durability, stable crushing performance, and a long lifespan through its monolithic structure. It operates smoothly, consumes little lubricating oil, and allows for easy adjustment of the gap between the teeth plates using our patented mechanism. It is widely used for primary crushing of raw materials in mines, cement plants, steelworks, and chemical plants, as well as in various raw materials for environmental recycling. 【Features】 ■ High-quality Japanese cast steel is used for the frame ■ Outstanding durability, stable crushing performance, and long lifespan achieved ■ Smooth operation with low lubricating oil consumption ■ Easy adjustment of the gap between the teeth plates (patented mechanism) ■ Over 1,700 units delivered domestically *For more details, please refer to the PDF document or feel free to contact us.

The "Roll Breaker" is a crushing machine that achieves low noise levels through our unique rubber tire drive. The gap adjustment between the rolls can be easily adjusted in increments of 0.1mm, allowing for timely adjustments according to roll wear and changes in the characteristics of the crushed material. Additionally, the cost of consumable parts is extremely low, enabling a reduction in maintenance costs of about 20% compared to conventional impact crushers. 【Features】 ■ Capable of crushing to the desired particle size range ■ Stable product particle size ■ Precise particle size ■ Low cost of consumables ■ Low maintenance ■ Low noise *For more details, please refer to the PDF materials or feel free to contact us.

The "Fine Joke Crusher" is a crushing machine capable of powerful crushing, thanks to its high-rigidity frame made of integrated cast steel. With its single toggle mechanism, it excels in material bite. It can be easily and quickly adjusted using our unique setting adjustment mechanism. It is widely used for primary crushing of raw materials in mines, cement plants, steel mills, and chemical plants, as well as in various raw materials for environmental recycling. 【Features】 ■ Single toggle mechanism ■ High-rigidity frame made of integrated cast steel ■ Capable of powerful crushing ■ Our unique setting adjustment mechanism ■ Standard heavy-load bearings (main shaft bearings and bumper bearings) ■ Over 1,700 units delivered domestically *For more details, please refer to the PDF document or feel free to contact us.

The "Hammer Crusher" is a crushing machine with a simple mechanism and low failure rate. It has a large crushing ratio (the ratio of size before and after crushing) and can achieve the desired particle size by using a grizzly (screen bar). It is widely used in various fields, from hard materials such as glass and ceramics to soft materials like limestone and coal. 【Features】 ■ Large crushing ratio ■ Low equipment cost compared to crushing capacity ■ Particle size adjustment possible with grizzly (screen bar) ■ Simple mechanism with low failure rate ■ Easy grizzly replacement [Patent registered] *For more details, please refer to the PDF document or feel free to contact us.

The "MRII-1000" is a double-roll crusher with a robust design that can withstand harsh usage. By removing the counter shaft and directly connecting the main shaft and motor with a chain, it has been made into a simple structure that requires minimal maintenance. By significantly increasing the number of teeth, it ensures that the top size can be reliably regulated. 【Features】 ■ Robust design that can withstand harsh usage ■ Simple structure that requires minimal maintenance ■ By significantly increasing the number of teeth, it ensures reliable regulation of the top size *For more details, please refer to the PDF document or feel free to contact us.

The "Fine Jaw Crusher (Small)" is a crushing machine suitable for the grinding of small amounts of hard materials in a laboratory setting. With its single toggle mechanism, it excels in the biting of raw materials. Thanks to our unique setting adjustment mechanism, it can be easily and quickly adjusted. Being compact, it can be used in laboratories and similar environments. 【Features】 ■ Sturdy small jaw crusher ■ Suitable for grinding small amounts of hard materials ■ Can be used in laboratories, etc. ■ Capable of powerful crushing down to a few millimeters *For more details, please refer to the PDF document or feel free to contact us.

The SG-10 is a sample grinder that supplies crushed material between the mantle and the cone cave, performing continuous crushing through the rotation of the mantle. The particle size after crushing can be adjusted to below 1mm. Adjustments can be easily made using a handle. It is suitable for fine grinding various raw materials such as ores, limestone, coal, and coke. 【Features】 - Capable of crushing to below 1mm - Particle size after crushing can be adjusted with a handle - Simple structure with excellent durability - Easy inspection and maintenance - Cleaning and maintenance of the crushing area is easy by lifting the cone cave *For more details, please refer to the documentation. ★ We are currently accepting crushing tests for this product and roll breakers! Please feel free to apply through the inquiry form.

"Choi Waru no Joe" is a compact unit-type crusher that is easy to install and relocate in a space-saving manner. It allows for precise material feeding and is equipped with a sensor at the feed chute that automatically stops the machine in case of a blockage. It is easy to operate even for beginners and can be used outdoors at construction sites. Additionally, with the optional feeding table, foreign materials and fine particles can be removed in advance, improving crushing efficiency and extending the lifespan of the crusher. [Features] - Integration of feeding, crushing, and discharging into one unit - Easy installation and relocation in a space-saving design - Transportable by arm roll trucks *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce examples of the use of crushers for gypsum board recycling. They can be used for applications such as separating gypsum attached to paper and crushing gypsum particles (5-10mm) into powder (-3mm). Our company offers models including the "RBT-1610GS" with a roll size of φ400×250mm, as well as the "RBT-2416G" and "RBT-3024GCS." 【Features】 ■ Low noise, low vibration, low power consumption ■ Adjustable roll gap for targeted particle size reduction ■ Compact and robust design for low maintenance *For more details, please refer to the PDF materials or feel free to contact us.

From raw material crushing for mines, cement plants, steelworks, and chemical plants, to primary crushing of various materials in the environmental recycling sector, our equipment is widely used. It features an easy structure and usage, and the unique robust design and high performance of Maekawa have been recognized, with over 1,700 units delivered to date, yet we continue to receive numerous inquiries from customers. For example, do you have any concerns regarding crushers or grinders such as: "I want a sturdy crusher." "I need a compact jaw crusher of small to medium size (for processing capacity of less than 5 tons/day)." "Is there a jaw crusher that can crush finely?" The crushers and grinders handled by Maekawa Industrial have a wealth of delivery records nationwide. Even tasks that are difficult with standard machines can be appropriately proposed by Maekawa Industrial. *For more details, please refer to the PDF materials or feel free to contact us.

From raw material crushing for mines, cement plants, steel mills, and chemical factories, our equipment is widely used for primary crushing of various materials in the environmental recycling sector. Its structure and usage are easy, and the unique robust design and high performance of Maekawa have been recognized, with over 1,700 units delivered to date, yet we continue to receive numerous inquiries from customers. For example, do you have any concerns regarding crushers or grinders such as: "I want a sturdy crusher." "Is there a jaw crusher with contamination countermeasures?" "The manufacturer of our existing crusher has gone out of business, and I can't procure parts." The crushers and grinders handled by Maekawa Industrial have a wealth of delivery records nationwide. Even tasks that are difficult with standard equipment, Maekawa Industrial will provide appropriate proposals. *For more details, please refer to the PDF document or feel free to contact us.

The compact unit-type crusher "Choi Waru no Joe" is easy to install and relocate in a space-saving manner. It allows for the precise supply of materials, and features a sensor at the feed chute that automatically stops the machine in case of a blockage. It is easy to operate even for beginners and can be used outdoors or at construction sites. Additionally, with the optional feed table, foreign materials and fine particles can be removed in advance, improving crushing efficiency and extending the lifespan of the crusher. 【Features】 ■ Integration of feeding, crushing, and discharging into one unit ■ Easy installation and relocation in a space-saving design ■ Transportable by arm roll trucks ~ We will be exhibiting at the 2023 New Environmental Exhibition! ~ Dates: May 24 (Wednesday) to May 26 (Friday), 2023 Hours: 10 AM to 5 PM (until 4 PM on the last day) Venue: Tokyo Big Sight Booth: A351 Exhibited Products: Jaw Crusher, Dual-Shaft Roll Crusher, etc. *For more details, please refer to the PDF document or feel free to contact us.