OKAMOTO List of Products and Services

This document contains a Q&A about cartridge heaters, conveyed by a former sales representative of a heater manufacturer. It explains questions such as "What is the lifespan of a heater?" and "What are the cost breakdowns of cartridge heaters?" Presented in a Q&A format, it provides clear explanations and serves as a useful reference. We encourage you to read it. 【Contents (partial)】 ■ Differences between cartridge heaters and sheath heaters ■ Where the cost breakdown of cartridge heaters varies among manufacturers ■ What is the lifespan of a heater? ■ Recommended watt density for heaters used in plastic molds ■ What is centerless grinding, and is centerless grinding necessary? *For more details, please download the PDF or feel free to contact us.

• Heating device

This catalog introduces heaters handled by OKAMOTO Corporation. It features a variety of heaters, including "air heating heaters" that heat air (gas) through forced or natural convection for heating, drying, dehumidifying, and warming, as well as "liquid heating heaters" that directly insert heaters into liquids such as water or oil for heating. Please take a moment to read this when selecting products. 【Contents】 <OKAMOTO Products by Application> ■ Air Heating Heaters ■ Liquid Heating Heaters ■ Mold Heating Heaters ■ Flat Heating Heaters ■ Tubular Heating Heaters *For more details, please refer to the PDF materials or feel free to contact us.

• Other air conditioning equipment

This document introduces the reasons why OKAMOTO Corporation is chosen. In the customer feedback section, we have included concerns received from two companies in the fields of resin molding and food processing machinery, along with proposed solutions. Please take a moment to read this when selecting heaters. [Contents] ■Mission ■Why ■How ■What ■Customer Feedback ■Company Overview *For more details, please refer to the PDF document or feel free to contact us.

• Other air conditioning equipment

I have worked in the heater industry for over 20 years and have received many inquiries. The most common inquiries can be classified into four categories. This document explains the causes and solutions for these four issues, incorporating case studies. [Contents (partial)] Four issues with heaters: ■ Frequent disconnections ■ Temperature unevenness ■ Poor work efficiency ■ High costs *For more details, please refer to the PDF document or feel free to contact us.

• Other heaters

Titanium has a high gas absorption capacity, low thermal conductivity, and a high reactivity with oxygen, which tends to form titanium oxide on its surface, making it difficult to achieve sound and consistent welding. "Ion plating" can form hard ceramic thin films through the combination with reactive gases, resulting in significantly higher wear resistance compared to wet plating, thereby improving the lifespan of the product. Additionally, "anodic oxidation coating" can enhance corrosion and rust resistance by forming an oxide film on the surface of titanium. Please feel free to consult us when needed. 【Features of Ion Plating】 ■ Can form hard ceramic thin films through the combination with reactive gases ■ Widely used, especially in the aerospace and medical industries ■ Expected to enable high-precision processing, improve corrosion resistance, and reduce surface degradation *For more details, please refer to the PDF document or feel free to contact us.

• Other processing machines

Our company is a specialized trading firm for heaters, based in Gunma Prefecture and Kyoto Prefecture, with a network of various partner companies in Kanto and Kansai, including mass-produced and single-item products, sheet metal processing, cutting, and welding. This document includes a Q&A format addressing topics such as "What is the difference between cartridge heaters and sheath heaters?", "What is the breakdown of costs for cartridge heaters?", and "What is the lifespan of heaters?". We invite you to read it. [Contents (partial)] ■ What is the difference between cartridge heaters and sheath heaters? ■ What is the breakdown of costs for cartridge heaters? ■ What is the lifespan of heaters? ■ What watt density is recommended for heaters used in plastic molds? ■ What is centerless grinding? *For more details, please refer to the PDF document or feel free to contact us.

• Other heaters

This document contains points to consider when choosing water heating heaters, as well as common questions and answers, shared from the perspective of someone who was once a salesperson. It includes topics such as "What is the most important thing about water heating heaters?", "What watt density is recommended for water heating?", and "Is it true that insulation can recover even if it deteriorates?" presented in a Q&A format. Please take a moment to read it. 【Contents (partial)】 ■ What is the most important thing about water heating heaters? ■ What are the safety devices for water heaters? ■ What is the breakdown of heater costs? / Where do the differences among manufacturers lie? ■ What materials are suitable for water heaters? ■ What is the lifespan of a heater? *For more details, please refer to the PDF document or feel free to contact us.

• Other heaters

This document introduces the characteristics of OKAMOTO's sheet metal. It features various products including SUS304 electropolished items, sanitary pipes, and electric okonomiyaki grills. The OKAMOTO business model involves receiving requests for research, comparison, and selection, after which we propose an appropriate set tailored to the customer and deliver the reflected products. We encourage you to read it. [Featured Equipment] ■ Fiber Laser Welding Machine ■ ACIES Series ■ 3D Compatible Bender ■ Automatic Feeding Device *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

Introducing heaters used in medical devices. For autoclaves, we use "silicone rubber heaters," "sheath heaters," and "aluminum foil heaters." For incubators, "fin heaters" and "steam generation heaters" are utilized. Additionally, we introduce heaters used in devices such as dialysis fluid heating systems. Please feel free to contact us if you have any inquiries. [Heaters Used in Medical Devices (Excerpt)] ■ Autoclave - Silicone rubber heater, sheath heater, aluminum foil heater ■ Incubator - Fin heater, steam generation heater ■ Blister packing machine - Cartridge heater *For more details, please refer to the PDF document or feel free to contact us.

• Heating device

We would like to introduce an example of a broken heating element in a food processing factory. It was reported that the break occurred two months after use, and the return bend of the heater was not in close contact with the piping, causing the heater to be in a dry firing state. Additionally, due to the wrapping, it is believed that the temperature rose abnormally. It is necessary to install the heater uniformly without excess, and by using self-regulating heaters, such breaks can be prevented. [Case Summary] ■ Cause - The heater was in a dry firing state, and due to the wrapping, it is believed that the temperature rose abnormally. ■ Countermeasure - It is necessary to install the heater uniformly without excess, and by using self-regulating heaters, such breaks can be prevented. *For more details, please refer to the PDF document or feel free to contact us.

• Other heaters

In this document, we introduce heaters with proven performance for kitchen equipment. Heaters that make maintenance easier to replace and contribute to space-saving, such as "dishwashers," and the focus on whether to increase the surface area of the sheath with flat heaters, which are mainstream in "fryers," are included in our lineup. Additionally, we also feature "griddles," "hot warmers," and various types of hoppers. [Featured Products] ■ Dishwasher ■ Fryer ■ Steam oven ■ Griddle ■ Hot warmer *For more details, please refer to the PDF document or feel free to contact us.

• Other heaters

This document is a guide titled "Points to Consider When Choosing Heaters and Common Questions," specifically focusing on cartridge heaters (for plastic molds and packaging machines), provided by someone who has experience as a former salesperson. It introduces knowledge related to plastic mold heaters in a Q&A format, starting with questions like "What is the lifespan of a heater?" and "What is centerless grinding?" as well as "What is watt balance? Does it have any effect?" We have enhanced the previously published material that received positive feedback. Whether you have seen it before or not, we encourage you to read it. 【Contents (partial)】 ■ What is the difference between cartridge heaters and sheath heaters? ■ What are the key points to consider when purchasing cartridge heaters? ■ What are the cost differences for cartridge heaters? ■ What is the breakdown of costs for cartridge heaters? ■ Various options for cartridge heaters. *For more details, please refer to the PDF document or feel free to contact us.

• Heating device

This document is a guide titled "Points to Consider When Choosing Heaters and Common Questions," specifically focused on heaters for plastic molds (cartridge heaters), shared from the perspective of a former salesperson. It introduces knowledge related to plastic mold heaters in a Q&A format, covering topics such as "What is the lifespan of a heater?", "What is centerless grinding?", and "What is watt balance? Does it have any effect?" Please take a moment to read it. 【Contents (partial)】 ■ What is the difference between cartridge heaters and sheath heaters? ■ What is the breakdown of costs for cartridge heaters? Where do manufacturers differ? ■ What is the lifespan of a heater? ■ What watt density is recommended for plastic mold heaters? ■ What is centerless grinding? Is centerless grinding necessary? *For more details, please refer to the PDF document or feel free to contact us.

• Heating device

This document is a collection of "Key Points for Choosing Heaters and Common Questions" regarding air heating heaters, conveyed by a veteran salesman from a former heater manufacturer. It presents knowledge about air heating heaters in a Q&A format, addressing questions that heater manufacturers would never openly discuss, such as "What is the lifespan of a heater?" and "Do fins really make a difference?" The content will provide straightforward insights that only a specialized heater trading company can offer. We encourage you to read it. [Contents (partial)] - There are various heater manufacturers, but are there any differences? What are they? - What is the breakdown of heater costs? Where do the differences among manufacturers lie? - What is the lifespan of a heater? - What watt density is recommended for air heating? - Are there many types of materials used for heaters? *For more details, please refer to the PDF document or feel free to contact us.*

• Heating device

We would like to introduce the "heaters used in food processing machinery" handled by OKAMOTO Corporation. Our lineup includes "heaters for heating water," which are used in noodle cookers and steamers, as well as "heaters for heating oil" used in fryers, and "heaters for heating air" used in sterilizers and dryers. If you are looking for heaters with a proven track record in food processing machinery, please leave it to us, a specialized trading company for heaters and thermal products. 【Product Lineup】 ■ Heater for heating water ■ Heater for heating oil ■ Heater for heating air ■ Heater for heating hot plates ■ Heater for heating molds *For more details, please refer to the PDF document or feel free to contact us.

• Heating device

We would like to introduce the "heaters with proven performance in kitchen equipment" handled by OKAMOTO Corporation. Our lineup includes "heaters for heating water" used in noodle cookers and steamers, "heaters for heating oil" used in fryers, and "heaters for heating air" used in sterilizers and dryers, among others. If you are looking for heaters with proven performance in kitchen equipment, please leave it to us, a specialized trading company for heaters and thermal products. 【Lineup】 ■ Heater for heating water ■ Heater for heating oil ■ Heater for heating air ■ Heater for heating griddles ■ Heater for heating molds *For more details, please refer to the PDF materials or feel free to contact us.

• Heating device

We would like to introduce the 'Heater' with proven results in medical devices, handled by OKAMOTO. Our lineup includes options for "heating inside sterilization cabinets," "stability testing machines," and "packaging machine sealing." We also offer "environmental conservation humidification generation." As a specialized trading company that supports the production activities of businesses, we continue to propose reliable and satisfactory products that meet our customers' needs. Please feel free to contact us when you need assistance. 【Lineup】 ■ For heating inside sterilization cabinets ■ For stability testing machines ■ For packaging machine sealing ■ For environmental conservation humidification generation *For more details, please refer to the PDF document or feel free to contact us.

• Other heaters

This document is a collection of processed products from OKAMOTO Corporation. It includes many items such as "SUS304 Hopper Electropolishing," "SUS430 Delivery Container (frame made of SUS304 square pipe)," and "SUS304 Cost Reduction Welded Structure." As a specialized trading company focused on heaters and thermal products, we are capable of delivering work that is backed by our achievements and experience. [Contents (excerpt)] ■SUS304 Hopper Electropolishing ■SUS304 Chamber #400 ■Electric Okonomiyaki Maker ■SUS304 Distribution Pipe Electropolishing ■SUS430 Delivery Container (frame made of SUS304 square pipe) *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

We would like to introduce the processing achievements of OKAMOTO Co., Ltd. We have a wealth of processing achievements, including hopper electropolishing, distribution pipe electropolishing, frames with distortion and welding burn thoroughly removed, and chamber #400. Please feel free to contact us when you need our services. 【Processed Products (Excerpt)】 ■ SUS304 Hopper Electropolishing ■ SUS304 Chamber #400 ■ Electric Okonomiyaki Grill ■ SUS304 Distribution Pipe Electropolishing ■ SUS430 Delivery Container *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

There was a problem where "the band heater is being used, but it quickly breaks, causing trouble." Our company requests tightening of the band after heating and regular tightening. To facilitate replacement, we adopted a plug-type hand heater. The key point is the adhesion between the piping and the heater. Since the flat heater is used in a rolled form, it is necessary to ensure a tight fit. 【Case Summary】 <Problem> ■ The band heater is being used, but it quickly breaks, causing trouble. <Solution> ■ Request tightening of the band after heating and regular tightening. ■ Adopted a plug type to make replacement easier. *For more details, please refer to the PDF document or feel free to contact us.

• Piping Materials

The soy sauce manufacturer faced the issue that "the materials in the hopper cool down and become difficult to input during winter." Since it is only used in winter, a silicone rubber heater that can be easily attached and detached was adopted. A simple temperature controller that can be set to ON and OFF was also installed with the heater. 【Case Overview】 <Problem> ■ The materials in the hopper cool down and become difficult to input during winter. <Solution> ■ Adopted a silicone rubber heater that can be easily attached and detached. *For more details, please refer to the PDF document or feel free to contact us.

• Other heaters

In the decorative goods manufacturer, partial repairs through welding of designer brand bags are necessary. There was a problem where "the tip of the soldering iron is processed for welding, but the temperature is unstable, resulting in inconsistent quality and quick breakage." Therefore, we proposed our "space heater with a sensor." Since it has a sensor, the temperature at the welding point is stable and can be fully controlled, and we applied an insulating plate with thermal efficiency and strength reinforcement. [Case Summary] <Problem> ■ Temperature is unstable, resulting in inconsistent quality and quick breakage. <Solution> ■ Introduced a space heater with a sensor. ■ The temperature at the welding point became stable and could be fully controlled. *For more details, please refer to the PDF document or feel free to contact us.

• Other heaters

We received an inquiry from a press processing company stating, "We would like to increase the processing accuracy by raising the temperature of the press mold when processing special materials." In our company, due to limited space for processing press molds, we proposed a cartridge heater with a temperature sensor. This allows for precise temperature control, and we protected the lead wires with a flexible tube for attachment to the press machine. 【Case Overview】 <Problem> ■ We want to raise the temperature of the press mold to improve processing accuracy. <Solution> ■ Introduced a cartridge heater with a temperature sensor. ■ Achieved precise temperature control. ■ Protected the lead wires with a flexible tube for attachment to the press machine. *For more details, please refer to the PDF document or feel free to contact us.

• Other heaters

In the resin molding manufacturer, they were considering, "We want to achieve tight temperature control due to the high watt density." Therefore, we proposed the "cartridge heater with temperature sensor." By controlling the heating element of the heater, we achieved tighter temperature control. 【Case Summary】 <Problem> ■ We want to achieve tight temperature control due to the high watt density. <Solution> ■ Introduced a cartridge heater with temperature sensor. ■ Achieved tight temperature control by controlling the heating element of the heater. *For more details, please refer to the PDF document or feel free to contact us.

• Other heaters

The packaging machine manufacturer faced the issue that "the lead wires often break at the connection between the cartridge heater and the lead wires due to the design where the mold moves during the sealing of the packaging." They adopted a swaged-in connection for the heater and lead wires within the heater itself. They also used smooth fluororesin wires to prevent breakage. 【Case Overview】 <Problem> ■ The lead wires often break at the connection between the cartridge heater and the lead wires. <Solution> ■ Adopted a swaged-in connection within the heater. ■ Used smooth fluororesin wires. *For more details, please refer to the PDF document or feel free to contact us.

• Other heaters

The manufacturer of environmental testing equipment faced the issue of standardizing duct heaters for the purpose of reducing delivery times and costs, regardless of the size of the equipment. Since the capacity and number of heaters change based on wind speed and volume, they decided to stop standardization, modify the design to meet specific needs, and set the exact number of heaters to achieve cost reduction. By patternizing the process, they were able to respond without significantly delaying delivery times. [Case Overview] <Problem> ■ Standardizing duct heaters for the purpose of reducing delivery times and costs, regardless of the size of the equipment. <Solution> ■ Stopped standardization, modified the design to meet specific needs, and set the exact number of heaters. *For more details, please refer to the PDF document or feel free to contact us.

• Other heaters

We received a consultation from a fryer manufacturer stating, "In developing a new type of fryer, we want to increase the capacity while reducing the number of heating elements compared to conventional seed heaters." Our company proposed a flat heater that can increase the surface area and capacity compared to seed heaters. We were able to complete a new type of fryer that increases capacity and reduces the number of heating elements. [Case Summary] <Problem> ■ We want to increase the capacity while reducing the number of heating elements compared to conventional seed heaters. <Solution> ■ We proposed a flat heater that can increase the surface area and capacity. *For more details, please refer to the PDF document or feel free to contact us.

• Other heaters

The compressor manufacturer was using overseas cartridge heaters and faced the issue of "frequent disconnections occurring immediately after the one-year warranty period." They consulted us for clarification, and upon disassembly, we found small scratches on the nichrome wire, and part of these scratches was causing abnormal heating, leading to disconnections. 【Case Summary】 <Problem> ■ Frequent disconnections occurred immediately after the one-year warranty period. <Solution> ■ There were small scratches on the nichrome wire, and part of it was causing abnormal heating, leading to disconnections. *For more details, please refer to the PDF document or feel free to contact us.

• Other heaters

The beauty and hairdressing equipment manufacturer faced the issue of "frequent disconnections occurring while using a reasonable watt density on SUS316L." While heating water at high temperatures, a large number of bubbles were generated, which interfered with the heat conduction to the water, causing abnormal heating. By increasing the number of disconnection heaters and lowering the watt density, the disconnections were eliminated. 【Case Summary】 <Problem> ■ Frequent disconnections occurred while using a reasonable watt density on SUS316L. <Solution> ■ Increased the number of disconnection heaters and lowered the watt density to eliminate disconnections. *For more details, please refer to the PDF document or feel free to contact us.

• Other heaters

A food machinery manufacturer faced the issue that "scale (water stains, carbohydrates) adheres to the heater sheath, making maintenance difficult, and during heater replacement, the 2-inch stainless steel plug gets stuck and is hard to remove." In response, our company proposed a cartridge heater. It has been downsized from a 2-inch stainless steel plug to a 1/2-inch one, making it more compact. Considering water quality, we changed the material to Incoloy 800, and since it is a rod type, it has received positive feedback for being easy to maintain. 【Case Overview】 <Problems> ■ Scale (water stains, carbohydrates) adheres, making maintenance difficult ■ The 2-inch stainless steel plug is hard to remove during heater replacement <Results after Implementation> ■ The rod type makes maintenance easy ■ It has been downsized from a 2-inch stainless steel plug to a 1/2-inch one, making it more compact *For more details, please refer to the PDF document or feel free to contact us.

• Other heaters

In a scientific equipment manufacturer, there was an issue where corrosion of heater sheaths due to water quality frequently occurred in specific locations within the country, despite using SUS316L with electropolishing. Our company determined that the corrosion was caused by the tap water and its unique water quality in those specific locations, which can reach quite high temperatures during water heating for steam generation. We addressed this by processing the surface with electropolishing on a higher-grade material, Inconel 800. [Case Summary] <Problem> ■ Corrosion of heater sheaths due to water quality frequently occurs in specific locations within the country. <Solution> ■ Addressed by processing the surface with electropolishing on a higher-grade material, Inconel 800. *For more details, please refer to the PDF document or feel free to contact us.

• Other heaters

OKAMOTO's important role is to connect customers with various requests, problems, and needs, who are our valued clients, to manufacturers that produce excellent products and partner companies with high technical capabilities. We strive to facilitate direct meetings between our valued clients and partner companies as much as possible. We implement initiatives such as allowing our clients to visit the production sites of partner companies and enabling partner companies to observe how equipment is used at client sites. By engaging in manufacturing while understanding not only the drawings but also their usage, the final product significantly improves. Furthermore, we are confident that the trust relationship built through face-to-face interactions will be a source of better products. Please feel free to contact us when you need our services. *For more details, please refer to the related links page or feel free to reach out to us.*

• Heating device

In water heating, the selection of sheath material is crucial due to corrosion caused by water quality. Water has good thermal conductivity, and the watt density can be set relatively high, with the materials ranked in order of cost and corrosion resistance as copper, SUS316L, and Incoloy 800. The sheath surface is treated with plating, acid polishing, or electropolishing. However, when using tap water, scale such as water stains and carbonates can adhere to the heater sheath, and it is necessary to remove this. 【Features】 ■ Good thermal conductivity ■ Watt density can be set relatively high *For more details, please refer to the related link page or feel free to contact us.

• Other heaters

Here are the key points for heating oil. Oil has poor thermal conductivity, so the heater capacity (watt density) must be set low. Therefore, the key is to maximize the surface area of the sheath. The material is often iron with plating, which is cost-effective and commonly used. 【Product Introduction Case】 <Compressor Manufacturer> ■Issues - Using overseas cartridge heaters ■Solution - Upon disassembly, small scratches were found on the nichrome wire, and part of those scratches caused abnormal heating, leading to a break in the wire. *For more details, please refer to the related link page or feel free to contact us.

• Other heaters

Air has poor thermal conductivity, and the heater capacity (watt density) cannot be increased. In air heating, the heater is cooled by the wind, so as the air volume increases, the heater capacity can be increased accordingly. Therefore, the relationship between the wind and the heater is key. By wrapping fins, the thermal efficiency can be further improved. 【Case Study of Product Handling (Environmental Testing Equipment Manufacturer)】 ■Issues - Duct heaters are standardized for shorter delivery times and cost reduction, but they are used regardless of the size of the equipment. ■Solutions - Since the heater capacity and number of units change with air speed and volume, standardization is abolished. - Design changes are made to match needs, setting the exact number of units to reduce costs. - Patterns are established, allowing for timely responses without significantly delaying delivery. *For more details, please refer to the related link page or feel free to contact us.

• Other heaters

In mold heating, holes are drilled in the mold using a gun drill, and a cartridge heater is inserted; however, the clearance between the hole and the heater is the key point. This is because the presence of air, which has poor thermal efficiency, in the clearance hinders heat conduction. Reaming is used for the hole, and centerless grinding is applied to the heater to improve precision, but cost becomes an issue. 【Product Handling Case Study (Packaging Machine Manufacturer)】 ■Issues - Due to the design where the mold moves during the sealing of the packaging, the lead wires often break at the junction with the cartridge heater. ■Solution - Adopted a swaged-in method for the connection between the heater and the lead wires inside the heater. - Used smooth fluororesin wires for the lead wires to prevent breakage. *For more details, please refer to the related link page or feel free to contact us.

• Other heaters

In metal hopper heating, since hoppers and tanks often have special shapes, the key point is how to increase the degree of contact. It is common to secure them with springs, hooks, double-sided tape, or pressure plates. However, heat escapes both inside and outside, so covering one side with insulation material dramatically improves thermal efficiency. 【Product Introduction Case】 <Soy Sauce Manufacturer> ■Issues - In winter, the materials inside the hopper cool down, making it difficult to load. ■Solution - Since it is only used outside of winter, a silicone rubber heater that is easy to attach and detach was adopted. - A simple temperature controller that can set ON and OFF was also installed with the heater. *For more details, please refer to the related link page or feel free to contact us.

• Other heaters

Here are the key points for heating metal plates. In metal plate heating, the heaters that can be used are limited by the operating temperature, so the operating temperature is crucial. Surface heaters are easy to install, but they have a low temperature range, and when exceeding 200°C, a sheath heater is used. 【Case Study of Products Handled by a Decorative Goods Manufacturer】 <Issues> ■ Partial repair welding is needed for designer brand bags. ■ Currently, welding is done by modifying the tip of a soldering iron, but the temperature is unstable. ■ There is variability in the quality, and they break easily. *For more details, please refer to the related link page or feel free to contact us.

• Other heaters

In pipe heating, the key point is the tight contact between the pipe and the heater. Since the flat heater is used in a rolled form, it is essential to ensure a firm contact. There is a problem with band heaters breaking quickly, which is troublesome. To address this, we request tightening the band after heating and regular tightening, and we adopted a plug type to facilitate easy replacement. 【Product Introduction Case】 ■Problem - Band heaters break quickly ■Solution - Request tightening of the band after heating and regular tightening - Adopt plug type for easy replacement *For more details, please refer to the related link page or feel free to contact us.

• Piping Materials

Here is a case study on the introduction of electric kitchen equipment. A Japanese cuisine chain restaurant faced the issue of wanting to simultaneously keep chawanmushi warm. As a solution, a touch panel was adopted to individually control the drawers from cooking to warming. This became economical as unnecessary drawers do not operate. [Case Overview] ■ Issues - Wanting to keep chawanmushi warm simultaneously ■ Solutions - Adoption of a touch panel - Individual control of drawers from cooking to warming *For more details, please refer to the related link page or feel free to contact us.

• Other food machinery