エムアールティ List of Products and Services

By introducing state-of-the-art heat treatment furnaces, we have achieved upgrades in quality, labor savings, and reduced delivery times. 【Salt Bath: For Thick HSS Products】 The salt bath, which is the origin of heat treatment, enables highly precise heat treatment. 【High Bright: For Thin and Small Parts Heat Treatment】 With High Bright, we achieve a complete press quench (hardening and rapid cooling press) that minimizes distortion. We invite you to try the heat treatment processing of a leading manufacturer with top-class market share in the fields of small diameter metal saws and milling cutters for your products. *For more details, please refer to the related links or feel free to contact us.

• cutter

Solving Various Problems in Cutting Processing with Metal Saws! We have created a troubleshooting book based on 80 years of experience in manufacturing metal saws! Many issues that cannot be resolved with standard products can be addressed by creating original tools! For example… --------- Example) Poor cutting performance, large burrs… - Specification changes for metal saws At MRT, it is possible to finely select various types of blade shapes (alternating teeth, staggered teeth, etc.) as well as the number of teeth (1 to 300 teeth, depending on the outer diameter). By using tools that are suitable for the workpiece through these specification changes, cutting performance issues can be improved. --------- Please feel free to download it! We also address concerns that are not included in the troubleshooting book. Don’t hesitate to contact us!

• cutter

MRT's metal saws are made to order. We propose tools suitable for your processing needs and will make improvements as necessary if any issues arise. There are many cases where problems that cannot be solved with standard products can be resolved by creating original tools! --------- Example) Excessive tool wear… - Change of metal saw material - Coating process At MRT, we propose materials suitable for the workpieces you process from multiple bases (carbide, high-speed steel) and a variety of materials (SKH51, 59, K10, K20, Z10, etc.)! We also offer suggestions to extend tool life through coating. Issues with tool wear can be improved by changing the material and applying coatings. Example) Poor cutting performance, large burrs… - Change of metal saw specifications At MRT, we can finely select various types of blade shapes (alternate teeth, staggered teeth, etc.) and the number of teeth (1 to 300 teeth, depending on the outer diameter). By using tools suitable for the workpieces through these specification changes, cutting performance issues can be improved. --------- For more details, please refer to the PDF materials or feel free to contact us!

• cutter

Product Name: Perforation Cutter Material: Carbide / High-Speed Steel Outer Diameter (D): 180mm or less Thickness (t): 0.2mm or more Main Applications: Egg cartons, paper perforation processing

• Other cutting tools

Product Name: Upper Blade Material: Carbide / High-Speed Steel Outer Diameter (D): To be discussed Thickness (t): To be discussed Main Use: Cutting of films and similar materials Note: Used in conjunction with the lower blade.

• Other cutting tools

Product Name: Round Blade Material: Carbide / High-Speed Steel Outer Diameter (D): 180mm or less Thickness (t): 0.2mm or more Main Use: Shearing

• Other cutting tools

Product Name: Lower Blade Material: Carbide / High-Speed Steel Outer Diameter (D): 180mm or less Thickness (t): 0.2mm or more Main Use: Cutting of films and similar materials Note: Used in conjunction with the upper blade.

• Other cutting tools

Product Name: Corner Round Knife Material: Carbide / High-Speed Steel Outer Diameter (D): 20mm to 200mm Thickness (t): 0.2mm or more Main Applications: Paper, Fabric, Wipers, etc. Additional Information: Angle (α): 8° or more (double angle), 5° or more (single angle) rotary knife

• Other cutting tools

Product Name: Round Corner Knife Material: Carbide / High-Speed Steel Outer Diameter (D): 20mm to 200mm Thickness (t): 0.2mm or more Main Applications: Paper, Fabric, Wipers, etc. Additional Information: Angle (α): 8° or more (both corners), 5° or more (one corner) rotary knife

• Other cutting tools

Product Name: Inner Round Milling Cutter Material: Carbide / High-Speed Steel Outer Diameter (D): 10mm to 100mm Thickness (t): Please inquire. Main Applications: Rounding processing, etc.

• Milling

Product Name: External Round Milling Cutter Material: Carbide / High-Speed Steel Outer Diameter (D): 15mm to 200mm Thickness (t): 0.2mm or more Main Applications: For rounding processing, etc. Additional Note: R: 0.3mm or more

• Milling

Product Name: Isometric Milling Cutter Material: Carbide / High-Speed Steel Outer Diameter (D): 15mm to 200mm Thickness (t): 0.3mm or more Main Applications: Grooving, mainly for keys, etc. Additional Information: Angle (α): 20° or more Milling cutter with cutting edges at equal angles on both sides.

• Milling

Product Name: Single Angle Milling Cutter Material: Carbide / High-Speed Steel Outer Diameter (D): 15mm to 200mm Thickness (t): 0.3mm or more Main Applications: Grooving, mainly for keys, etc. Additional Information: Angle (α): 20° or more A milling cutter with an angled cutting edge on one side.

• Milling

Product Name: Spiral Cutter Material: Carbide / High-Speed Steel Outer Diameter (D): 15mm to 125mm Thickness (t): 50mm or less Main Applications: Grooving and others Additional Information: Features a twisted cutting edge on the outer surface, designed for finishing flat surfaces.

• Milling

Product Name: Side Cutter Material: Carbide / High-Speed Steel Outer Diameter (D): 30mm to 200mm Thickness (t): 2mm to 50mm Main Applications: Groove machining, etc. Note: There are cutting edges on the outer circumference and the side.

• Milling

Product Name: Chidori Side Blade Metal Saw Material: Carbide / High-Speed Steel Outer Diameter (D): 20mm to 200mm Thickness (t): 1mm or more Main Applications: For deep groove processing, etc. Note: The side blades are processed with cutting edges, and the side blades have alternating edges on the left and right.

• Milling

Product Name: Metal Saw with Side Blade Material: Carbide / High-Speed Steel Outer Diameter (D): 20mm to 200mm Thickness (t): 1mm or more Main Applications: For deep groove processing, etc. Additional Note: Grooving is applied to the side.

• Milling

Product Name: Alternating Blade Metal Saw Material: Carbide / High-Speed Steel Outer Diameter (D): 10mm to 200mm Thickness (t): 0.2mm or more Main Applications: Commutators and others Note: The blade tips are alternately cut left and right, which is effective for chip removal. Mainly used for groove processing.

• Milling

Product Name: End Mill with Common Boss Material: Carbide / High-Speed Steel Outer Diameter (D): 15mm to 200mm Thickness (t): 0.15mm or more Main Applications: Actuators, electronic components, etc. Note: Used for combinations, etc.

• Milling

Product Name: Gold Thread Cutter Material: High-speed Steel (SKH55) Outer Diameter (D): 43mm, 51mm, 60mm, etc. Thickness (t): 0.08mm to 0.4mm Main Use: Cutting of gold thread, silver thread, film, etc. Additional Information: We also manufacture pieces and separators.

• Other cutting tools

Product Name: Slurry Milling Cutter Material: Carbide / High-Speed Steel Outer Diameter (D): 5mm to 200mm Thickness (t): 0.1mm or more Main Use: Cutting Additional Information: The hole diameter and number of blades can be manufactured according to your specifications. Both side surfaces will have a low to medium slope from the cutting edge. The minimum thickness dimension varies depending on the outer diameter, so please confirm in advance.

• Milling

Type: Metal Saw Material: Carbide / High-Speed Steel Outer Diameter (D): 5mm to 200mm Thickness (t): 0.1mm or more Main Use: Cutting Additional Information: Hole diameter and number of teeth can be customized upon request. Both sides will have a low to medium slope from the cutting edge. The minimum thickness dimension varies depending on the outer diameter, so please confirm in advance.

• Milling

TiN-coated products are coated with titanium nitride, which surpasses the hardness of cemented carbide (HV18000-2000) using the PVD method. The TiN coating offers exceptional heat resistance, wear resistance, and anti-welding properties compared to the base materials (high-speed steel, cemented carbide), significantly extending the performance and lifespan of cutters, allowing for higher-speed machining. Additionally, since the film thickness is only 2-3μ, it does not compromise the inherent toughness of the base material, enabling increased production with existing equipment and improving machine utilization rates. As a result, we have received high evaluations and trust from our users. 【Coating Types】 ■CrN ■TiAlN ■TiN ■TiCN *For more details, please refer to the related links or feel free to contact us.

• Coating Agent

First, please check the specifications and rotation speed of the milling cutter currently in use, and calculate the current cutting speed. 【Cutting Speed Calculation】 *You can perform the cutting speed calculation from the related links below. After that, please compare it with the standard cutting speeds recommended by our company. For more details, please feel free to contact us.

• others

We would like to introduce the features of ultra-hard solid products. 【Features】 ■ High Precision ... Compared to high-speed steel products, they are processed with higher precision in terms of runout and surface roughness, improving the finishing accuracy of the cutting surface. ■ High Efficiency ... With high-speed cutting of a wide range of work materials from steel to cast iron, cutting time can be significantly reduced. ■ Cost-effectiveness ... They have superior wear resistance compared to high-speed steel products, extending the tool replacement cycle and reducing costs. *For more details, please refer to the related links or feel free to contact us.

• others

Our technical department, which is mainly responsible for the design and production management of metal saws, collaborates with the sales team to consider what kind of special processing to add based on customer needs, and then translates that into drawings to provide feedback to the production site. Special processing involves adding treatments such as heat treatment and polishing to the basic design of the metal saw, as well as considering what type of "cutting edge" to attach to the metal saw based on customer specifications. A key role of the technical department is to think about how to breathe life into the metal saw according to customer needs and to coordinate with the production site. **Features** - High repeat rate - The production site operates with a constant variety of small lots - Almost no complaints regarding quality and delivery times Currently, the technical department is promoting new mechanization to further stabilize and standardize quality and short delivery times. We are actively researching the development of software to facilitate groove processing and special processing, as well as temperature management and work management within the factory. *For more details, please refer to the related links or feel free to contact us.*

• Other contract services

High Bright is ideal for heat treatment of thin materials and small items. It minimizes distortion with a complete press quench (hardening and rapid cooling press) that can only be achieved with High Bright. 【Features】 - It is a fully automatic through-type with a four-chamber structure: transport table + purge chamber, heating chamber, cooling chamber, and purge chamber + extraction table, allowing for continuous hardening treatment. - By adjusting the cooling time, products can be removed while still hot, enabling complete rapid cooling press and minimizing distortion. - Heating is done using radiant heat and convection heat, preventing temperature variations caused by interference (shadows) between products. Shortened delivery times with a fully automatic atmosphere tempering furnace! It is a fully automatic through-type with a three-chamber structure: transport table + cooling chamber, heating chamber, cooling chamber + extraction table. When products are set in a basket and the cycle start button is pressed, tempering is automatically repeated twice. Up to three baskets can be inserted, and the hardened products are automatically sent to the extraction table the next morning, significantly reducing the tempering process time. *For more details, please refer to the related links or feel free to contact us.

• others

The salt bath furnace dedicated to high-speed steel, which has now become a rarity in the country. Heat treatment using salt baths is suitable for thick high-speed steel products. This treatment method, which is the origin of heat treatment, enables highly precise heat treatment. It provides a buoyancy of about 2 to 3 times the specific gravity to the immersed products without causing them to float, thereby reducing bending during heating due to their own weight. Ideal heat treatment, which is difficult to achieve in a vacuum furnace, can be performed even for a single item. 【Features】 - No erosion effect (surface protection) - The salt flows due to electromagnetic stirring on the immersed products, acting as an extremely uniform heating medium (excellent temperature distribution), and local heating is also possible. - Sufficient heat capacity and thermal conductivity as a heating medium (rapid heating and cooling possible). *For more details, please refer to the related links or feel free to contact us.

• others

Our company can accommodate not only technology but also the detailed needs of our customers and small lot sizes. The materials we primarily handle for heat treatment are high-speed steels, and we perform quenching operations using salt baths as a quenching furnace that maximizes the performance of the materials. Additionally, we use high-bright quenching furnaces that minimize bending and distortion for small diameter and ultra-thin products. Even from a single piece, we can provide high-quality heat treatment, which is our strength. Furthermore, we also process various tools, molds, and test products other than cutting tools, so please feel free to consult with us. 【Features】 ■ Accommodates detailed customer needs and small lot sizes ■ Capable of high-quality heat treatment even from a single piece ■ Also handles processing of various tools, molds, and test products other than cutting tools * While we can process die steel (SKD) and martensitic stainless steel (SUS420, 440) other than high-speed steel (SKH), please consult us separately for bearing steel (SUJ), alloy tool steel (SKS), carbon tool steel (SK). * For more details, please refer to the related links or feel free to contact us.

• Other contract services

Applying the extensive know-how accumulated over many years in heat treatment. We have started outsourcing heat treatment processing for high-quality HSS products. Sticking to craftsmanship, the MRT manufacturing mindset... Our heat treatment department is mainly operated by skilled workers with over ten years of experience, and we strive to improve each other's skills daily under the motto of "reporting, communication, and confirmation." In July 2008, we took the opportunity of relocating to a new factory to renew our equipment and introduce state-of-the-art heat treatment furnaces, achieving upgrades in quality, labor-saving, and shortened delivery times. 【Features】 ■ Providing products that are distortion-free, high-performance, and uniquely different ■ Mainly operated by skilled workers with many years of experience *For more details, please refer to the related links or feel free to contact us.

• Other contract services

In July 2008, we took the opportunity of relocating to a new factory to completely renew our equipment and introduce the latest heat treatment furnace, achieving upgrades in quality, labor savings, and shorter delivery times. Initially, we conducted heat treatment for our own products, but we have now started outsourcing heat treatment for high-quality high-speed steel products by applying the extensive know-how we have accumulated over many years. The application fields are diverse, and our cutting tools, which are essential for manufacturing, are used in various production sites. In particular, our heat-treated thin plates of high-speed steel, thanks to our unique technology, have been able to provide products that are distortion-free, high-performance, and distinctly different. We invite you to try the heat treatment processing of a leading manufacturer with a top share in the fields of small-diameter metal saws and milling cutters for your products. 【Heat Treatment Services】 ■ Salt Bath ■ High Bright *For more details, please refer to the related links or feel free to contact us.

• Other contract services

This document is a reference material published by M.R.T., a specialized manufacturer of cutting tools, slab milling cutters, and metal saws. It provides detailed information on the chemical composition and property comparisons of materials used, selection criteria for carbide grades, and cutting conditions for milling. [Contents] ■ Chemical composition and property comparisons of materials used ■ Selection criteria for carbide grades ■ Conversion table for thickness ■ Cutting conditions for milling ■ Guidelines for troubleshooting in milling ■ Characteristics of coating films *For more details, please refer to the PDF document or feel free to contact us.

• Other work tools

This catalog presents products from M.R.T., a specialized manufacturer of cutting tools, slitting mills, and metal saws. We offer a wide range of products suitable for cutting applications, including "metal saws," "double corner round knives," and "circular cutters." In addition to these products, we provide items tailored to meet our customers' needs. 【Featured Products (Excerpt)】 ■ Metal Saws - Slitting mills, flutes with common bosses, alternate tooth metal saws ■ Slitters - Double corner round knives, single corner round knives, upper blades ■ Special Cutters - Gold thread, circular cutters *For more details, please refer to the PDF document or feel free to contact us.

• Other work tools

Our company was established in 1946 as a specialized manufacturer of cutting tools, slitting mills, and metal saws. With many years of rich experience and excellent manufacturing technology, our MRT products are known for their sharpness, durability, and precision, and their true value is now recognized both domestically and internationally. Thanks to this, we have received very positive feedback from many users. We provide a wide variety of suitable products tailored to usage conditions, at low cost and with short delivery times. 【Manufactured Items】 ■ Solid Metal Saws ■ External Round Mills ■ Slitting Mills ■ Form Mills ■ Metal Saws ■ Round Knives (Double Angle, Single Angle) ■ Slitters ■ Angle Cutters (Double Angle, Single Angle) ■ Internal Round Mills ■ Side Cutters ■ Heat Treatment Processing *For more details, please refer to the PDF materials or feel free to contact us.

• Other work tools