西部電機 List of Products and Services

Achieved ±1μm pitch processing with full stroke machining of 800mm × 600mm. Compared to equivalent large models, space-saving has been realized. By reviewing the machine structure and applying "kisage treatment" in various places, high precision, high rigidity, and long lifespan have been achieved. Continuing to explore the essence of technology for half a century, we have made ultra-precision machining on large machines possible with the technology and reliable quality we have cultivated. Details will be announced soon!

• Grinding Machine

◇In-machine measurement function This function uses a touch probe on the tool table to measure the dimensions of the workpiece's R, taper, and straight shapes after processing within the machine. By repeating processing and measurement, it achieves machining with strict tolerances. As a feature of Seibu Electric, the combination of the machine's high positioning accuracy and high-precision touch probe enables high-precision machining. The minimum command unit for the X and Z axes of the high-precision free-form internal grinding machine SFG is 0.01μm (fully closed control). Both the work spindle and grinding wheel spindle are equipped with high-precision ceramic bearings, achieving high rigidity and high rotational accuracy. A constant temperature device is standard equipment, and special thermal countermeasures have been applied to various parts such as slides and spindles to ensure thermal stability.

• Grinding Machine

The "SNC-28TG" is a multi-NC grinding machine that can handle vertical/oblique axis and horizontal processing all in one unit. The vertical and oblique axes can be switched using the same unit. Setup time is reduced to half that of conventional machines, making it suitable for rough to medium finishing of precision equipment parts. Additionally, the method for setting the grinding wheel is versatile, allowing for various configurations. 【Features】 ■ Capable of vertical/oblique axis and horizontal processing in one machine ■ High-speed grinding for molds for optical lenses with a diameter of 1mm or less ■ Vertical and oblique axes can be switched using the same unit ■ Setup time reduced to half that of conventional machines ■ Ideal for rough to medium finishing of precision equipment parts *For more details, please refer to the PDF document or feel free to contact us.

• Grinding Machine

The "SFG-35P/HP/UP" is a high-precision free-form internal grinding machine capable of processing workpieces up to 6 inches in size with the same high accuracy as the "SFG-28." It achieves a maximum gripping work size of φ150mm × L150mm and a maximum processing length of 100mm. Continuous shapes such as R shapes, tapers, and straight lines can be processed with high precision and efficiency on both the inner and outer diameters. 【Features】 - Equipped with a large 15-inch touch panel, significantly improving operability. - Capable of mounting up to 2 tool changing units inside the machine. - Achieves nano-level slide positioning and rotational accuracy. - Thorough temperature management of the machine, making it less susceptible to changes in room temperature. - Supports composite processing of "cutting + grinding." *For more details, please refer to the PDF document or feel free to contact us.

• Grinding Machine

The "SFG-28P/HP/UP" is a precision grinding machine capable of processing continuous shapes such as R shapes, tapers, and straights with high precision and efficiency for both inner and outer diameters. It achieves nano-level slide positioning and rotational accuracy. The machine is designed to thoroughly manage temperature, making it less susceptible to changes in room temperature. It also supports composite processing of "cutting + grinding" for materials such as SKD and high-speed steel. 【Features】 - High precision and efficiency in processing continuous shapes for both inner and outer diameters - Capable of mounting up to two truing units inside the machine - Achieves nano-level slide positioning and rotational accuracy - Designed to be less affected by changes in room temperature - Supports composite processing of "cutting + grinding" for materials such as SKD and high-speed steel *For more details, please refer to the PDF document or feel free to contact us.

• Grinding Machine

The "SNC-40P II" is a precision small NC lathe equipped with a high-rigidity main spindle base, capable of high-precision machining of iron-based and hardened materials. With an X-axis stroke of 400mm, it offers ample tooling space. It adopts a wide-area direct chip discharge system, enabling long hours of unmanned operation. You can choose from two types of spindles (built-in/belt drive). 【Features】 ■ High rigidity allows for high-precision machining of iron-based parts ■ Ample tooling space with an X-axis stroke of 400mm ■ Wide-area direct chip discharge system enables long hours of unmanned operation ■ Two types of spindles (built-in/belt drive) to choose from ■ Standardized automation system with a gantry loader ■ Compatible with hard turning *For more details, please refer to the PDF materials or feel free to contact us.

• lathe

The "SNC-35HPi" is a compact NC lathe equipped with a built-in spindle featuring a through hole of φ32. It maintains dimensional changes of less than 1μm during long hours of continuous operation from a cold start. It has a special heat transfer prevention structure that prevents heat generated by the ball screw and servo motor from being transmitted to the slide. An automated system using a gantry loader is standardized, and system expansion is also possible. 【Features】 ■ Special heat transfer prevention structure that prevents heat generated by the ball screw and servo motor from being transmitted to the slide ■ Equipped with a built-in spindle featuring a through hole of φ32 ■ Standardized automated system using a gantry loader ■ Compatible with hard turning ■ Can accommodate bar materials up to φ20mm *For more details, please refer to the PDF document or feel free to contact us.

• lathe

The "SNC-28P II/HP II" is a compact NC lathe that achieves excellent shape accuracy and stable dimensional accuracy through an independent X and Z axis slide configuration and the adoption of a high-rigidity cast iron main bed. An automated system using a gantry loader is standardized, and system expansion is also possible. By adding in-machine measurement capabilities, it reduces correction input by operators and the man-hours required for dimensional management outside the machine. 【Features】 ■ Maintains sub-micron machining accuracy stably over long periods ■ Achieves excellent shape accuracy and stable dimensional accuracy ■ Standardized automation system using a gantry loader ■ Realizes dimensional changes within 1μm, including cold start (HP II) ■ Special heat transfer prevention structure that prevents heat generated by ball screws and servo motors from being transmitted to the slides (HP II) *For more details, please refer to the PDF materials or feel free to contact us.

• lathe

The "SNC-20PT" is a finishing machine equipped with 2 spindles and 2 slides, enhancing productivity. It can maintain sub-micron machining accuracy stably for extended periods. The floor space is reduced by 25% compared to a two-machine connection. 【Features】 ■ Equipped with 2 spindles and 2 slides ■ Stable maintenance of sub-micron machining accuracy for long periods ■ 25% reduction in floor space compared to a two-machine connection ■ Low center height designed for ease of operation *For more details, please refer to the PDF document or feel free to contact us.

• lathe

■Current Functions 1: Only compatible with Φ1.0mm 2: No dedicated operation screen ↓ ■New Functions 1: Compatible with φ0.3mm to φ3.0mm 2: Added operation screen, added dedicated screen processing conditions 3: Added announcement function upon completion of processing 【Features】 ● No need for fine hole electrical discharge machining ● Compatible with workpiece sizes specified by the machine body ● The slide is part of the machine body, ensuring high-precision NC specifications *For more details, please refer to the PDF document or feel free to contact us.

• Grinding Machine
• Other processing machines

The "SFG-35UP" is a high-precision free-form grinding machine equipped with a 6-inch chuck, capable of handling maximum workpiece outer diameters of φ150mm. In addition to processing continuous shapes with high precision and efficiency, it allows for dimension and R absolute value corrections through in-machine measurement and a CCD camera. It also features nano-level positioning and a high-rigidity spindle, with thorough temperature management of the machine and careful consideration for environmental resistance. 【Features】 ■ Capable of high-precision and high-efficiency processing of continuous shapes such as R shapes, tapers, and straights for both inner and outer diameters. ■ Significantly improved operability with a new interactive screen. ■ Compatible with workpieces up to φ150×150mm. ■ Supports composite processing of "cutting + grinding." ■ Equipped with a grinding wheel truing unit inside the machine. ■ Utilizes a large 15-inch touch panel for interactive operation. *For more details, please refer to the PDF document or feel free to contact us.

• Grinding Machine
• Other processing machines

The "SFG-35 Series" is a grinding machine capable of processing workpieces up to 6 inches in size with the same high precision as the SFG-28. It achieves a maximum gripping work size of φ150mm × L150mm and a maximum processing length of 100mm. It can process continuous shapes such as R shapes, tapers, and straight lines with high precision and efficiency for both inner and outer diameters. The lineup includes "SFG-35P," "SFG-35HP," and "SFG-35UP." 【Features】 ■ Up to 2 trueing units can be installed inside the machine ■ Achieves nano-level slide positioning and rotational accuracy ■ Thorough temperature management of the machine, designed to be less affected by changes in room temperature ■ Supports composite processing of "cutting + grinding" (excluding some super hard materials) *For more details, please refer to the PDF document or feel free to contact us.

• Grinding Machine
• Other processing machines

The "SFG-35UP" is a grinding machine equipped with a 6-inch chuck that can accommodate workpieces with a maximum outer diameter of φ150mm. In addition to being able to process continuous shapes with high precision and efficiency, it features in-machine measurement and a CCD camera, allowing for correction of dimensions and absolute values of R. Furthermore, it employs nano-level positioning and a high-rigidity spindle, ensuring thorough temperature management of the machine and adequate consideration for environmental resistance. 【Features】 ■ Capable of high-precision and high-efficiency processing of continuous shapes such as R shapes, tapers, and straights for both inner and outer diameters. ■ Significantly improved operability with a new interactive screen. ■ Accommodates workpieces up to φ150×150mm. ■ Supports composite processing of "cutting + grinding." ■ Equipped with an in-machine grinding wheel truing unit. ■ Utilizes a large 15-inch touch panel for interactive operation. *For more details, please refer to the PDF document or feel free to contact us.

• Grinding Machine
• Other processing machines

The "Ultra MM50B" is a high-precision wire electrical discharge machining (EDM) machine that offers processing accuracy suitable for ultra-precision molds, with improved processing speed due to the adoption of a new type of CNC. 【Features】 ■ High-precision processing with a pitch accuracy of ±1μm ■ Improved surface roughness due to the use of an insulated table ■ Enhanced work surface quality with a new wire drive system ■ Increased processing speed with the adoption of a new type of CNC ■ Improved operability by consolidating functions into a handheld pendant For more details, please contact us.

• Electric discharge machine

The high-speed, high-precision wire electrical discharge machine M50B allows users to constantly check necessary information during processing and maintenance on any screen, eliminating unnecessary screen transitions. Additionally, adjusting difficult processing conditions when correcting disconnections or corner sag is made easy with a slider bar, rather than directly adjusting the processing conditions, achieving simple operation from the user's perspective. 【Features】 ○ Ideal non-stop operation ○ Simple start hole processing (SHM) ○ EL coating (Electrode Coating) ○ Core Stitch (CORESTITCH) (patented) ○ Monitor anywhere! Automatic email function For more details, please contact us.

• Electric discharge machine

The high-precision wire electrical discharge machine MM50B offers processing accuracy suitable for ultra-precision molds, ensuring reliable processing even for plate machining with a high number of connections, thanks to its automatic connection device. The MM series, built on traditional technology "kisage," achieves long-term stable pitch processing accuracy and provides sub-micron processing precision. Additionally, the Thermal Adjust 24 function automatically corrects the displacement of the wire's vertical position caused by temperature changes and discharge heat, enhancing the shape accuracy of the products. This allows for improved processing precision without incurring high costs for temperature control equipment. 【Features】 ○ Professional performance that achieves ultra-precision processing ○ Stable pitch processing accuracy through traditional technology "kisage" ○ Processing accuracy suitable for ultra-precision molds ○ Thermal Adjust 24 (patent registered) For more details, please contact us.

• Electric discharge machine

The new feature "Core Stitch" of the high-speed, high-precision wire EDM machine M75B allows for the welding of cores at any location, eliminating the need for core trimming processes. The welded cores can be processed with just a light impact, achieving a significant reduction in the time required for the trimming process (97% reduction). This feature will revolutionize the efficiency of wire EDM machines. 【Features】 ○ Ideal non-stop operation ○ Simple start hole processing (SHM) ○ EL coating (Electrode Coating) ○ Core Stitch (CORESTITCH) (patent registered) ○ Monitor anywhere! Automatic email function For more details, please contact us.

• Electric discharge machine

The high-precision wire electrical discharge machine MM75B can achieve improved machining accuracy without incurring high costs for temperature control equipment compared to conventional methods. The Thermal Adjust 24 function automatically corrects the displacement of the wire's vertical position caused by changes in ambient temperature and discharge heat, enhancing the shape accuracy of the products. Additionally, it offers machining accuracy suitable for ultra-precision molds, making it reliable for processes with a high number of connections, such as progressive plate machining using an automatic connection device. The MM series, built on traditional techniques known as "kisage," ensures long-term stable pitch machining accuracy and provides sub-micron machining precision. 【Features】 ○ Professional performance that achieves ultra-precision machining ○ Stable pitch machining accuracy due to traditional technique "kisage" ○ Machining accuracy suitable for ultra-precision molds ○ Thermal Adjust 24 (patented) For more details, please contact us.

• Electric discharge machine

The high-speed, high-precision wire electrical discharge machining system M35B ensures automatic connection at break points by repeatedly applying annealing current and heat to perform pulling operations (anneal & dry). (Patents obtained in Japan, the U.S., and Europe) It supports non-stop operation with the best automatic connection device, significantly improving operational efficiency. 【Features】 ○ Ideal non-stop operation ○ Improved operability from the user's perspective ○ Simple start hole processing (SHM) ○ EL coating (Electrode Coating) ○ Core Stitch (CORESTITCH) (patent registered) For more details, please contact us.

• Electric discharge machine

The high-precision wire electrical discharge machine MM35B offers sub-micron machining accuracy. The MM series, crafted with the artisan technique "kisage," achieves long-term stable pitch machining accuracy. It provides machining precision suitable for ultra-precision molds, and the automatic wire connection device ensures reliable processing for plate machining with a high number of connections. The Thermal Adjust 24 function automatically corrects the displacement of the wire's vertical position caused by temperature changes and discharge heat, enhancing the shape accuracy of the products. Additionally, it allows for improved machining accuracy without incurring high costs for temperature control equipment. 【Features】 - Professional performance that achieves ultra-precision machining - Stable pitch machining accuracy through traditional technique "kisage" - Machining precision suitable for ultra-precision molds - Thermal Adjust 24 (patent registered) For more details, please contact us.

• Electric discharge machine

The "MB Series" is a high-precision wire electrical discharge machining system that achieves the ideal non-stop operation. Necessary information during processing and maintenance can always be confirmed on any screen, eliminating unnecessary screen transitions. Additionally, adjusting difficult processing conditions when correcting wire breaks or corner sagging can be easily done using a slider bar instead of directly adjusting the processing conditions, achieving simple operation from the user's perspective. There are seven models in the 3 Series lineup, and the features are well-equipped. 【Features】 ■ All models are equipped with the newly developed NC device "Smart NC" ■ Ideal non-stop operation ■ Improved operability from the user's perspective ■ Monitoring from anywhere, automatic email notification function ■ Seven models in the 3 Series lineup ■ Well-equipped features *For more details, please refer to the PDF document or feel free to contact us.

• Electric discharge machine

The oil-type ultra-precision wire electrical discharge machining machine M25LP demonstrates its power in high-precision and high-quality processing of cemented carbide molds compared to the water-type version. It is expected to meet the increasing demand for motor core molds for hybrid vehicles and for fine processing using Φ0.05 wire in fields such as narrow-pitch connectors and LED components. 【Features】 ○ Same stroke for X and Y axes, U-shaped insulated table ○ Insulation with ceramics to minimize stray capacitance between electrodes ○ Equipped with the new finishing power supply SF-7 ○ Stable pitch processing accuracy ○ Automatic feeding device (AWF) → Wiring with Φ0.05 wire achieves a high success rate For more details, please contact us.

• Electric discharge machine

We would like to introduce our high-precision compact NC lathe and high-precision free-form grinding machine, 'SNC-SFG', which we handle. The lathe series "SNC" adopts a comb blade type tool holder and is suitable for high-precision parts processing. We offer models that meet customer needs, including the standard model "P series," the high-precision model "HP series," and a series equipped with a high-rigidity spindle base with a separate X-slide stroke. The grinding machine "SFG-28P/HP/UP," capable of processing continuous shapes with high precision, achieves nano-level slide positioning and rotational accuracy, while also ensuring thorough temperature management of the machine, making it less susceptible to changes in room temperature. 【Lineup】 ■ Lathe Series - SNC-28PII/HPII - SNC-35HPi - SNC-40PII - SNC-20PT/HPT ■ Grinding Machine "G" Series - SNC-28TG - SFG-28P/HP/UP *For more details, please refer to the PDF materials or feel free to contact us.

• Other machine tools
• NC unit
• Grinding Machine

The 28TG, developed from the SNC-20G, is a multi-NC grinding machine that can handle all types of main axes: vertical, inclined, and horizontal, with just one unit. It also grinds molds for optical lenses with a diameter of less than 1mm at high speed. For more details, please contact us or refer to the catalog.

• lathe
• Grinding Machine

The high-precision HP series "SNC-28HPII" is an ultra-precise compact NC machining tool that enables long hours of unmanned operation due to its unique in-machine measurement system. It is the successor model to the high-precision compact NC lathe SNC-20 series, with a minimum setting unit of 0.0001μm. 【Features】 ■ High Precision - Glass scales on the X-Z axes (optional) - Minimum setting unit of 0.0001mm ■ High Speed - Built-in spindle speed of 10,000 min^-1 ■ Generous Stroke - X-Z stroke of 300mm x 245mm ■ Long Hours of Unmanned Operation - Tool wear compensation through a unique in-machine measurement system For more details, please contact us or download the catalog.

• Other processing machines
• lathe

The ultra-precision small NC lathe "SNC-40P0i" is a high-rigidity machine with an X-axis stroke of 400mm class maximum size. High precision, high rigidity, high speed. With a highly rigid body structure, it enables high-precision machining of iron-based components. For more details, please contact us or refer to the catalog.

• lathe

We would like to introduce machining samples using machine tools such as NC lathes that respond to the processing of small precision parts and cutting machines that enable free-form processing. Seibu Electric Co., Ltd. broadly meets the mass production processing needs of small precision automotive parts, including small precision motors, VTR cylinders, HDD hubs, optical devices, office automation equipment, home appliances, and common rails. [Processing Samples] - Lens mold processing - Aspherical processing Please contact us for more details.

• Grinding Machine
• lathe

This data document introduces verification data on the machining accuracy of a lathe series that employs a comb-shaped cutting tool holder, suitable for high-precision component machining. It includes data on dimensional changes for the inner diameter (φ3) during continuous processing of 100 units of the "SNC-35HP," as well as basic accuracy of the "SNC-Pi series" and continuous processing data for 250 units of the "SNC-20P." [Models Featured] ○ SNC-35HP ○ SNC-Pi series ○ SNC-20P ○ SNC20HPISP For more details, please contact us or download the catalog.

• Other machine tools

At Seibu Electric, we have achieved processing precision that can accommodate ultra-precision molds through pitch processing using SuperMM. To prove that high-precision processing through wire cutting can shorten other processes, we created a clearance of 1μm to 2μm in diameter between the pin gauge and the processed hole. By inverting the upper plate A, which is stacked in two layers, and inserting the pin gauge, we demonstrated that the distances and positions of each shape are uniform. Furthermore, by rotating the upper plate A, which is stacked in two layers, by 180 degrees and inserting the pin gauge, we proved that each shape is vertical. Our wire electric discharge machining machine is equipped with one of the world's top-class automatic wire threading devices, ensuring reliability even for processes with a high number of wire threading, such as progressive plate processing. 【Pitch Processing Precision】 ○ Pitch error: less than 2μm ○ Upper-lower difference: less than 1μm For more details, please contact us or download the catalog.

• Other machine elements

Our company, guided by the philosophy of "pursuing ultra-precision and mechatronics," is a mechatronics manufacturer that opens up the future with diverse technologies in logistics material handling systems, industrial machinery, electric discharge machines, and machine tools. Our products contribute to improving productivity, streamlining logistics, enhancing efficiency, reducing labor, and automating processes across a wide range of fields, including automotive, electronics, precision machinery, molds, petrochemicals, food, civil engineering, and shipbuilding, earning us significant patronage from customers both domestically and internationally. 【Business Areas】 ○ Material Handling Division ○ Industrial Machinery Division ○ Precision Machinery Division For more details, please contact us or download our catalog.

• Other machine tools
• Other conveying machines
• Actuator

The "MEX15" is an oil-type ultra-precision wire electrical discharge machine that achieves a contour shape accuracy of ±0.5μm in lead frame processing. Furthermore, it adopts a high-rigidity gantry structure with minimized thermal displacement and a seal-less "virtual cross table," achieving straightness of less than 0.1μm on both the X and Y axes. It provides a high probability supply with a cycle time of under 3 minutes for a wire diameter electrode of φ0.03, and it is also capable of supplying at break points. 【Features】 ■ Achieves straightness of less than 0.1μm over the full stroke ■ Achieves contour shape accuracy of ±0.5μm ■ Achieves pitch processing accuracy of ±0.5μm ■ Achieves roundness of 0.4μm ■ Achieves high probability connection with φ0.03 wire *For more details, please refer to the external link or feel free to contact us.

• Electric discharge machine