東京発条製作所 List of Products and Services

We would like to introduce the "Various Molds" solution from Tohatsu Springs. The "Tohatsu's Powerful Spring Series," a standard for mold springs devised to support the mold industry, which became a pillar of Japan's post-war economic growth, remains one of our main products today. It is certified by JIS standards and is used worldwide. We process spring-grade silicon-chromium steel, which is suitable for mold springs, into Tohatsu's unique non-circular wire shape. We always keep over 240 types of materials in stock specifically for mold springs. Please feel free to contact us when you need assistance. 【Standards for Mold Springs】 ■ TF, TL, TM, TH, TB standards compliant with JIS B 5012 ■ TJL, TJM, TJH, TJB standards compliant with ISO 10243 ■ Tohatsu original standards for various industries: TR, TY, TU, TE, TD, TLR standards *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce the solution "Escalator" from Higashi Hatsu Springs. To prevent slack in the handrail belt, it is necessary to apply a weight (tension) of over 1 ton, and our springs, which can provide a large force (load), are used for this purpose. Additionally, springs are also used in the reduction gear and brakes. Please feel free to contact us if you have any inquiries. *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce the "Conveying Spiral" solution from Tohatsu Springs. By rotating, it is possible to transport powders, granules, and shavings. The use of wire material for springs improves wear resistance. Additionally, it enables the production of long items. Please feel free to contact us when you need assistance. 【Features】 ■ Capable of transporting powders, granules, and shavings by rotation ■ Improved wear resistance by using wire material for springs ■ Capable of producing long items *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce our solution "Furnace Lid" from Higashi Hatsu Springs. In general spring steel, when exposed to high temperatures, a phenomenon known as "set" (where the free height decreases) is likely to occur, which can lead to a shorter maintenance cycle. Our company offers round wire coil springs made from heat-resistant materials such as stainless steel wire (SUS631J1, etc.). For more details, please feel free to contact us. *For more information, please refer to the PDF document or feel free to reach out to us.

We would like to introduce the "Underfloor Spring" solution from Higashi Hatsu Springs. It has a proven track record in facilities such as the Nippon Budokan, which was used during the Tokyo Olympics in 1964, as well as in gymnasiums across various prefectures, schools, and police stations, receiving positive feedback. At that time, tatami mats were laid on the floor, and it seems that many people were injured on the hard tatami. It is said that coil springs and leaf springs, which excel in cushioning and have a quick return speed, are suitable for this purpose. Please feel free to contact us if you have any inquiries. *For more details, please refer to the PDF materials or feel free to reach out to us.

We would like to introduce our solution "Press Machine" from Higashi Hatsu Springs. In general, clutch brakes use multiple (even number) springs, and it is necessary to have technology that minimizes variations in the free height, parallelism, and force (load) of each spring. Our company has established technology that minimizes variations even in mass production. Please feel free to contact us when you need assistance. *For more details, please refer to the PDF materials or feel free to contact us.

We would like to introduce our solution "Robot Arm" from Higashi Hatsu Springs. Since the balancer spring requires a large stroke, we also have springs that are 800mm in length, which necessitates equipment for manufacturing large springs. Additionally, if more force is required, we will consider double (a specification where a spring is placed inside the inner diameter of another spring) or triple (a specification where another spring is placed inside the double) springs. Please feel free to contact us when you need assistance. *For more details, please refer to the PDF materials or feel free to reach out to us.

We would like to introduce our solution for construction machinery from Higashi Hane. Powerful springs that provide great force (load) in a small space are used in hydraulics. Since painting on the springs can peel off and cause clogging, we offer powerful springs without any coating. If you are using round wire coil springs in a double configuration (where the spring is placed inside the inner diameter of the spring), please let us know. There may be potential for cost reduction by using powerful springs in a single (individual) configuration. Additionally, tension springs are used for the shift lever, and large springs are used for the tension of the tracks (crawler). Please feel free to contact us when you need assistance. *For more details, please refer to the PDF document or feel free to reach out to us.

We would like to introduce our solution, the "Injection Molding Machine," from Higashi Hatsu Springs. Our standard products utilize high deflection strong springs that allow for a large stroke. If the melting temperature of the pellets (industrial plastic raw materials) is high, we can provide heat-resistant springs. For more details, please contact us. *For more information, please refer to the PDF materials or feel free to contact us.