ホシモト List of Products and Services

【Before】 ■Conventional Fixed Pillars Conventional fixed pillars are designed with screw processing, which can lead to difficulties in smoothly engaging the fixing screws. Depending on the machining accuracy of the panel, securing with screws may not go well or may require more work. ↓ 【After】 ■Knurled Screws By using pillars with floating nuts or a floating nut specification, the engagement of knurled screws becomes smooth. Even if there is some misalignment during assembly, fastening with the screws is easy, allowing for a simplification of the overall manufacturing process of the panel. *For more details, please refer to the catalog or feel free to contact us.*

• Door Accessories

【Before】 Conventional hinge sets can cause high surface pressure between the hinges when the door rotates, which may lead to warping of the door depending on the size and weight of the panel, resulting in tight rotation during use. ↓ 【After】 By incorporating washers (such as brass) between the hinge sets, we can prevent issues related to door warping and rotation. Using washers also allows for height adjustment of the hinges. *For more details, please refer to the catalog or feel free to contact us.*

• Door Accessories

【Before】 ■2-pipe hinge It is commonly used as a concealed hinge for doors that are installed by welding pipes. However, depending on the size and weight of the metal casing, misalignment angles may occur, making the opening and closing of the door not smooth. ↓ 【After】 ■3-pipe hinge In the case of a 3-pipe hinge, there are two correction parts between the pipes, which can reduce misalignment angles compared to a 2-pipe hinge, allowing for smoother opening and closing of the door. *For more details, please refer to the catalog or feel free to contact us.

• Door Accessories

【Before】 Hinges that are fastened with screws or bolts typically have straight holes, but if the screw heads protrude from the surface, they may interfere with other components or negatively affect the appearance. ↓ 【After】 By changing the mounting holes of the hinges from straight holes to countersunk holes, the holes are recessed to a dish shape, allowing flat-headed screws to be fastened in that area, resulting in a flat surface for the hinges. This eliminates interference with other components and improves the appearance. *For more details, please refer to the catalog or feel free to contact us.*

• Door Accessories

【Before】 ■Standard Hinge A hinge is a component that allows the door of a metal enclosure to open and close. However, due to factors such as the weight of the door and the installation environment, deformation or distortion of the hinge may occur, which can lead to issues with the smooth operation of the metal enclosure's opening and closing. ↓ 【After】 ■Reinforced Hinge By adopting a hinge with reinforcing ribs, the strength of the hinge against load pressure is increased. This helps prevent deformation and distortion of the hinge caused by load pressure, making it possible to improve opening and closing issues. *For more details, please refer to the catalog or feel free to contact us.

• Door Accessories

【Before】 ■Fixed Support In the case of fixed supports used for distribution boards, supports of a predetermined height are used according to the manufacturing specifications of the distribution board, so it is necessary to keep stock of supports of each size (height). 【After】 ■Adjustable Support By adopting adjustable supports, it becomes possible to adjust the height of the supports according to the specifications of each distribution board, thereby reducing the stock of supports. *For more details, please refer to the catalog or feel free to contact us.

• Door Accessories

【Before】 The conventional round bosses and round collars have a shape that makes it difficult to position them correctly when welding to the enclosure. As a result, if the welding is done in an incorrect position, the round bosses and round collars may become misaligned, leading to cases where securing them properly is challenging, which increases the labor hours required. ↓ 【After】 In cases where effective use of internal space in control panels, such as those with densely packed control equipment, is necessary, corner collars, stepped bosses, and stud bosses are effective. By changing the shape of the round bosses and round collars to corner collars, stepped bosses, or stud bosses, it becomes easy to position them correctly when welding to the enclosure. *For more details, please refer to the catalog or feel free to contact us.*

• Door Accessories

【Before】 ■General Welded Boss To attach general round or square bosses to a metal housing, a standard welding process is usually required. Depending on the operator, there may be misalignment in the welding position. 　↓ 【After】 ■Stud Welded Boss In the case of stud welding, a stud boss is attached to a dedicated stud gun, and when the switch is turned on, welding is performed in a short time. This method allows for precise positioning and eliminates the need for rework, significantly reducing labor hours. *For more details, please refer to the catalog or feel free to contact us.

• Door Accessories

【Before】 When a boss is used in an assembly within a metal housing, the conventional round boss has a round shape, which makes it difficult to tighten strongly using tools. ↓ 【After】 In the case of hexagonal bosses or bosses with surface machining, it is possible to use tools such as wrenches to tighten them strongly. Additionally, it becomes possible to prevent loosening of bolts due to vibrations. *For more details, please refer to the catalog or feel free to contact us.*

• Door Accessories

【Before】 ■Round Boss (No Chamfering) For bosses used in welded metal housings, it is necessary to check the shape of the insertion part (the hole processing part) to ensure that the engagement with counterpart components such as screws and bolts is smooth. ↓ 【After】 ■Round Boss (With Chamfering) When chamfering is applied to the hole processing part of the boss, the engagement with counterpart components such as screws and bolts becomes smooth. *For more details, please refer to the catalog or feel free to contact us.

• Door Accessories

【Before】 In facilities where cleanliness is essential, the equipment and devices used are also required to have a good appearance. General welded bosses used inside metal enclosures can cause welding distortion on the back side of the enclosure due to the welding process, which may result in a poor appearance. ↓ 【After】 In the case of stud bosses that can be welded using a dedicated stud gun, welding can be easily performed, and the appearance after welding is finished neatly. Additionally, since welding distortion is less likely to occur on the back side of the enclosure, no additional finishing work is required. *For more details, please refer to the catalog or feel free to contact us.*

• Door Accessories

【Before】 ■Corner Color Generally, round colors are mainstream for hinges, but by selecting corner colors, the workability can be improved for easy positioning during welding. However, due to the bending process, the base of the L bend on the door side becomes R-shaped, which may slightly reduce the adhesion when welding at the base. ↓ 【After】 ■C-Faced Corner Color By adding a C face processing to the standard corner color for hinges, positioning for welding becomes easier, and it is possible to weld more closely at the base of the L bend on the door side. *For more details, please refer to the catalog or feel free to contact us.

• Door Accessories

【Before】 Eye bolts are used to lift and move various heavy enclosures and machinery. However, to install them on the ceiling of the enclosure or machinery, measures are necessary to prevent water ingress from the ceiling in environments where waterproofing is required. ↓ 【After】 In the case of metal enclosures used on ships, it becomes possible to prevent external water ingress, such as water leaks from the ceiling, by not only using eye bolts but also adopting a sheet color between the enclosure and the eye bolt to ensure waterproofing. *For more details, please refer to the catalog or feel free to contact us.*

• Door Accessories

【Before】 ■Types of copper materials used in copper bars When using copper bars, while there may be a selection of surface treatments such as nickel plating or tin plating, we had never delved into the materials of the copper itself. As a result, we were selecting and adopting copper materials without knowing whether they were suitable for the operating environment of our panels. ↓ 【After】 ■Types of copper materials used in copper bars and conductivity When selecting copper bars, determining the material based on the internationally accepted annealed standard soft copper conductivity, known as IACS, allows for efficient current flow. While there may not be much difference in standard copper bars, it is possible to make selections that achieve energy savings in custom copper bars designed to carry high-capacity power. *For more details, please refer to the catalog or feel free to contact us.

• Power distribution and control panels

【Before】 When determining the dimensions of copper bars used for carrying large currents, such as those in power panels, there were no clear internal standards, and we were directly repurposing from past drawings. The large cross-sectional area copper bars were not standard products from manufacturers, and we were ordering them as custom items each time, which led to high costs for copper materials and processing to specified dimensions, becoming a problem. ↓ 【After】 The key point in selecting custom copper bars is that referring to the size charts from material manufacturers can help reduce processing costs. Since the dimensions of copper bars intended for carrying current do not require high precision in material dimensions, it is efficient to design them as closely as possible to the original material dimensions. Although there is a standard length for each material piece, determining the dimensions of copper bars that do not require complex machining can achieve cost reductions. *For more details, please refer to the catalog or feel free to contact us.*

• Power distribution and control panels

【Before】 The selection of the cross-sectional area of the copper bar based on the flowing current has been referenced from the catalog values of copper bar manufacturers. However, since the allowable current values differ among manufacturers even for the same cross-sectional area, we have prioritized safety by selecting larger cross-sectional area copper bars each time, which has led to increased material costs. ↓ 【After】 When you want to determine the cross-sectional area of the copper bar based on the rated current, it is common to refer to the Japan Electric Power Distribution Control System Industry Association standard JSIA303 for cabinet-type distribution boards (III04-2). When prioritizing safety, you can select the necessary cross-sectional area by applying the above formula. *For more details, please refer to the catalog or feel free to contact us.*

• Power distribution and control panels

【Before】 The copper bar determines its cross-sectional area (height × width) based on the flowing electrical capacity, but the "height" and "width" that determine the cross-sectional area are fixed combinations of standard dimensions. If the copper bar is designed outside the "height" and "width" specified in the table above, it will deviate from standard products, resulting in increased costs and lead times. ↓ 【After】 Once the required cross-sectional area of the copper bar is determined, the next step is to decide on the dimensions of the copper bar to be used. At this time, even within the standard dimensions (height × width), for a "height" of 3mm, the "width" can be 12mm or 15mm, and for a "height" of 4mm, the "width" can be 12mm, 15mm, or 20mm, allowing for selection from standard copper bar dimensions. This enables cost reduction and shorter lead times for material procurement from the design stage. *For more details, please refer to the catalog or feel free to contact us.*

• Power distribution and control panels

【Before】 The criteria for selecting copper bars during the design of distribution boards and control panels is based on the current capacity (A) flowing through them, which tends to give the most consideration to the cross-sectional area (width × height). As a result, the "length" of the copper bars is often less considered, leading to an increase in the overall cost of the panel. In particular, the copper bars connected to the main breaker have a relatively large cross-sectional area and require three bars for a three-phase system, making it necessary to optimize the "length" of the copper bars themselves. 【After】 By understanding the "length" dimensions of standard raw material (at the time of purchase) copper bars, it becomes possible to design the optimal "length" for the copper bars. Especially when copper bars longer than 600mm are required, it becomes difficult to obtain the three necessary copper bars for a three-phase system from a single raw material copper bar. By considering the number of bars obtained and the yield rate from the design stage, the cost of conventional copper bars has been reduced by one-fourth. *For more details, please refer to the catalog or feel free to contact us.*

• Power distribution and control panels

[Before] The ground terminal, which is electrically connected to the panel body and allows for the connection of the internal grounding wire and ground wire, is often installed on the ground within the housing. Therefore, if the mounting angle within a small electrical box cannot be secured, it can be difficult to perform the installation work for the ground terminal. ↓ [After] By cutting the leg portion of the ground terminal at an angle, a wider mounting angle than a right angle can be secured, making it easier to perform the installation work for the ground terminal even within a small electrical box. *For more details, please refer to the catalog or feel free to contact us.

• Power distribution and control panels

【Before】 The supporters and branching copper strips used inside the panel electrically connect the conductors. This can lead to the risk of electric shock, fire, and power loss. ↓ 【After】 By applying a coating to the components used inside the panel and insulating them, it is possible to prevent friction and electrical connections between the components, thereby enhancing the safety of the panel. *For more details, please refer to the catalog or feel free to contact us.*

• Power distribution and control panels

【Before】 ■Conventional Handles Handles used in various devices and equipment have a predetermined height based on size when installed, resulting in protrusions from the mounting surface. To improve grip, the height of the handle may be increased, but the higher it is, the larger the protrusion becomes. ↓ 【After】 ■Folding Handles In the case of folding handles, the mounting part is a joint component that allows for folding, making it possible to minimize protrusions regardless of the height of the handle used. *For more details, please refer to the catalog or feel free to contact us.

• others

【Before】 ■Zinc alloy handle Parts and accessories used in metal enclosures need to be selected according to the environment and specifications in which the enclosure will be used and installed. 　↓ 【After】 ■Plastic handle Due to the characteristics of the material, plastic handles have excellent salt resistance and insulation properties, making them suitable for environments where salt resistance and insulation functions are required. *For more details, please refer to the catalog or feel free to contact us.

• others

【Before】 The rod that connects to the lock on the door side of the electrical box has varying load pressures on the rod when locked, depending on the specifications of the housing. Depending on the load, scratches may occur on the painted surface of the housing, as shown in the photo. ↓ 【After】 By adopting a cap at the tip of the rod, we can soften the interference with the internal frame of the housing, preventing scratches on the housing and allowing for smooth locking and unlocking operations. *For more details, please refer to the catalog or feel free to contact us.

• Door Accessories

【Before】 The button tubes used for bundling and protecting wire harnesses need to be color-coded according to the type of wire harness within the electrical box. ↓ 【After】 In the case of reversible types (types with different colors on each side), it is possible to select and use the front and back according to the application, which can reduce the variety of stock compared to standard button tubes. *For more details, please refer to the catalog or feel free to contact us.*

• Safety and consumables

【Before】 ■Fixed Coin Lock The coin lock used for locking and unlocking the door of a metal enclosure must have its height selected according to the specifications of the metal enclosure. In some cases, it may be necessary to bend the stop pin for height adjustment. ↓ 【After】 ■Adjustable Coin Lock By adopting an adjustable coin lock, it becomes possible to adjust the height of the support post according to the specifications of each distribution board, thereby reducing the inventory of coin locks. *For more details, please refer to the catalog or feel free to contact us.

• Safes, Cabinets, Lockers
• Door and window locks

【Before】 ■Hex Nut For thin plates where tapping cannot be done, hex nuts can be welded for various screw fastening applications. However, when using standard hex nuts, positioning during welding can sometimes be difficult. ↓ 【After】 ■Hex Weld Nut In the case of hex weld nuts with a pilot, drilling a pilot hole at the welding point makes positioning easier, thereby improving work efficiency. *For more details, please refer to the catalog or feel free to contact us.

• Work tools

【Before】 ■Various Sizes of Grommets Grommets are used to reinforce holes to prevent damage or wear, and when the edges of a hole are sharp, they are used to protect wires or cables passing through the hole from being damaged. It is necessary to use grommets that match the dimensions of the through holes made in metal enclosures for wiring purposes. 　↓ 【After】 ■Flexible Bush Flexible bushes can be used as a substitute for grommets, and since they have slits in the main body, they can be bent for installation and can be used for various dimensions (inner diameter sizes) of through holes made in metal enclosures. *For more details, please refer to the catalog or feel free to contact us.

• Reinforcement and repair materials
• Safety and consumables

【Before】 ■Green Bolt The Green Bolt is a widely used component for housings and panels as a screw for earth terminals. It is a bolt with a slotted brass head, coated with green baked paint on the hexagonal head. When using a Green Bolt, it is common to incorporate flat washers and S washers to improve the tightening condition, which requires separate inventory management and assembly work for the washers. ↓ 【After】 ■Washer-integrated Green Bolt By adopting a type of Green Bolt that incorporates flat washers and S washers into the screw, the assembly work for the washers becomes unnecessary. Furthermore, by using flat washers and S washers, the tightening torque can be equalized, eliminating bolt loosening. *For more details, please refer to the catalog or feel free to contact us.

• Work tools

【Before】 ■Low Head Screw This part is widely used for opening and closing operations of various enclosures such as distribution boards, sub-distribution boards, control panels, and machine tools. When the head is flat and made of brass, it can sometimes become loose due to movement or vibration when pinching the head to tighten the low head screw on the door side to the enclosure side. 　↓ 【After】 ■Low Head Screw with Slotted or Phillips Head By adopting a low head screw with a slotted or Phillips head made of brass, it can be tightened using a slotted or Phillips screwdriver, which helps prevent loosening of the screw due to vibration. *For more details, please refer to the catalog or feel free to contact us.

• Work tools

【Before】 ■Earth Terminal When painting the panel before wiring, the earth terminal that has already been welded to the panel is also painted. This can cause issues with inserting bolts into the tapped holes, so it is common to apply disposable masking tape during the painting process. 　↓ 【After】 ■Use of Earth Terminal Cover By using an earth terminal cover before painting, the above phenomenon can be prevented. It is also effective for protecting the earth terminal during welding, and it can be used multiple times due to its detachable design. *For more details, please refer to the catalog or feel free to contact us.

• Power distribution and control panels

【Before】 ■ Weld Nut Specification To secure sufficient threads for panel parts made from thin plates, it is sometimes necessary to weld separate weld nuts to the hole processing area. However, this requires the preparation of specialized tools and the labor of welding each one individually. ↓ 【After】 ■ Press Nut Specification By changing the panel parts from weld nut specification to press nut specification, the need for separate tools for welding is eliminated, and multiple pilot holes can be set and pressed in simultaneously, allowing for a reduction in labor hours. *For more details, please refer to the catalog or feel free to contact us.

• Work tools

【Before】 ■Fully threaded low-profile screws Fully threaded low-profile screws have threads cut all the way down from the male thread neck, and they are a commonly used type. However, since they are fully threaded, there is a possibility that the low-profile screws may fall off and get lost when the door or lid of the enclosure is opened. To prevent the screws from falling off, additional fall prevention washers or E-rings are required. 　↓ 【After】 ■Partially threaded low-profile screws Partially threaded low-profile screws have a shank diameter that is narrower than the thread diameter in the unthreaded section, which allows for the prevention of screw fall-off or loss even when screws installed on the doors of various enclosures are removed. *Although they have a fall prevention structure, it is also common to use additional fall prevention washers. *For more details, please refer to the catalog or feel free to contact us.

• Work tools

【Before】 ■Locks made of zinc alloy, brass, iron, and stainless steel In the case of high-pressure panels that require locking strength and explosion-proof properties, it is common to use locks made of zinc alloy, brass, iron, and stainless steel for locking and unlocking the doors. However, locks of the same materials are often used in low-pressure panels where the need for locking strength and explosion-proof functions is lower. 【After】 ■Locks made of resin In the case of low-pressure panels where the need for locking strength and explosion-proof functions is low, adopting locks made of resin can achieve cost reduction. *For more details, please refer to the catalog or feel free to contact us.

• Safes, Cabinets, Lockers
• Door and window locks

【Before】 ■Rivet Specification When connecting the lot rod for the panel to the handle's stop pin, it is usually riveted by hammering a rivet pin, but this process takes time and effort. ↓ 【After】 ■Push Nut Specification By using a push nut instead of the riveting process, it can be easily fixed just by press-fitting the push nut onto the pin shaft. This prevents excessive riveting from the riveting process and improves appearance. *For more details, please refer to the catalog or feel free to contact us.

• Work tools

【Before】 ■Conventional Stay In the case of a stay used for opening and closing the door of an electrical box, the stopper ball is inserted between the counterpart component on the body side of the electrical box as the door opens and closes, allowing the door to be stopped in the open position. However, with the conventional structure, there may be instances where the opening and closing do not proceed smoothly due to wear and product deformation associated with the number of openings and closings. 　↓ 【After】 ■Stay with Modified Counterpart Shape By changing the shape of the counterpart component where the stopper ball fits, as described above, it becomes possible to improve opening and closing issues caused by wear and product deformation associated with the number of door openings and closings. *For more details, please refer to the catalog or feel free to contact us.

• Door Accessories
• others

【Before】 ■Round supporter with a flat tip Supporters (spacers) are commonly used accessories and parts for mounting (fixing) circuit boards and supporting other components. When installing a round supporter with a flat tip, only a flat screwdriver can be used for installation. 　↓ 【After】 ■Round supporter with a cross tip By adopting a round supporter (spacer) with a cross tip, it becomes possible to install it not only with a flat screwdriver but also with a cross screwdriver, leading to improved work efficiency. *For more details, please refer to the catalog or feel free to contact us.

• others

Hoshimoto's engineers have compiled and published their knowledge on selecting industrial accessories and parts for panels, enclosures, and panels in the "Technical Handbook for Selecting Accessories and Parts for Enclosures and Panels." From the perspective of manufacturers producing accessories and parts for distribution boards, control panels, sub-distribution boards, and enclosures, we have included over 70 examples of cost reduction and quality improvement points. This specialized selection technical book is currently available for free! (70 pages, full color) This technical handbook is aimed at designers looking to achieve cost reductions in mechanical components of panels and enclosures, covering selection methods for main mechanical parts such as handles, hinges, bosses, busbars, and supports, as well as environmental compliance, international standards, space-saving, durability, waterproofing, corrosion resistance, safety, and dust resistance. *Please note that the downloadable version is only a digest edition (25 pages). If you would like to receive the full handbook, please contact us through the "Contact Form" below. We also welcome requests for the "Latest Comprehensive Catalog" and "Customization Guide" during this opportunity.

• Water and sewerage pipe fittings
• Substation equipment
• Power distribution and control panels

Hoshimoto, a comprehensive parts manufacturer for panels and enclosures, has published the "Industrial Accessories and Parts Comprehensive Catalog for Panels, Enclosures, and Panels," which summarizes applications and features from the designer's perspective in an easy-to-understand manner. Having this book will be extremely helpful in the parts selection process when designing machines and equipment! It includes essential accessories and parts for panels and enclosures, such as handles, locks, grips, hinges, rods, eye bolts, gaskets, and copper busbars, all presented in full color across more than 300 pages. We are currently offering this comprehensive catalog for free, which every designer should have! If you are having trouble selecting accessories and parts like handles and hinges for panels and enclosures, please take this opportunity to request the materials. *The download only includes the catalog table of contents. If you would like a physical copy, please apply through the "Contact Form" below. We will send the catalog to the address registered with Ipros.

• Water and sewerage pipe fittings
• Substation equipment
• Power distribution and control panels

This is information about Hoshimoto handles. We offer a wide variety of products in different sizes to accommodate various situations. Materials: Iron, stainless steel, plastic, rubber, zinc alloy, etc. *For more details, please refer to the PDF document or feel free to contact us.

• others

<I-Bolt> Material: ●CB-/Iron (SS) ●SCB-/Stainless Steel (SUS) Surface Treatment: ●CB-/Trivalent Chromate Plating <I-Nut> Material: ●CN-/Iron (SS) ●SCN-/Stainless Steel (SUS) Surface Treatment: ●CN-/Trivalent Chromate Plating Application: Distribution boards, sub-distribution boards, control panels, machine tools, various enclosures Remarks: Compatible with hexavalent chromate and raw materials We offer a wide variety of standard sizes and long neck sizes. *For more details, please refer to the PDF document or feel free to contact us.

• Metalwork
• Substation equipment
• Power distribution and control panels

The ribs and packing on the back of the main body are designed for waterproofing. It features a reversible design for both left and right sides (to switch sides, simply flip the stop pin and adjustment washer). *For more details, please refer to the PDF document or feel free to contact us.

• Door Accessories
• Substation equipment
• Power distribution and control panels

■This is part of a custom product manufactured according to customer specifications using our company's press machine. ■We accommodate a variety of products with short delivery times and small lot sizes. ■We also offer bolt-mounted hinges with cell studs (no welding), bolt welding, bar rolling, and hole processing. *For more details, please refer to the PDF document or feel free to contact us.*

• Door and window locks
• Substation equipment
• Power distribution and control panels

<Stud Bolt> Material: ●B-/Iron ●SB-/Stainless Steel Surface Treatment: B-/Copper Plating Available in various sizes. *For more details, please refer to the PDF document or feel free to contact us.

• Water and sewerage pipe fittings
• Substation equipment
• Power distribution and control panels

Material: ● BN/Iron (SS) ● SBN/Stainless Steel (SUS304) Surface Treatment: ● BN-/Copper Plating Custom sizes available upon request. *For more details, please refer to the PDF document or feel free to contact us.

• Power generation equipment
• Substation equipment
• Power distribution and control panels

We offer a variety of sizes for earth terminals. ● Material: Body / Iron, Connection part / Copper ● Surface treatment: Copper plating ● Applications: Distribution boards, sub-distribution boards, and various other boxes *For more details, please refer to the PDF document or feel free to contact us.

• Power generation equipment
• Substation equipment
• Power distribution and control panels