関ケ原製作所 List of Products and Services

Our hand wrap technology allows us to finish stone products with suitable surface roughness according to various needs. Regarding surface roughness in terms of precision, we can accommodate a wide range from a rough finish of Ra5.0 to a mirror finish of Ra0.4 while maintaining flatness, compared to the standard lap finish of Ra0.8. [Adoption Examples] ■ Very Rough Surface Finish for Glass Substrate Vacuum Tables - The surface is roughened to reduce static electricity during the detachment of glass substrates, preventing breakage. - Maintains flatness while performing rough machining. - Supports on-site additional processing. *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

This document provides an overview of the precision factory equipment at Sekigahara Manufacturing Co., Ltd. It introduces various items, including the names and manufacturers of the machines introduced in the precision factory, the size of the constant temperature and humidity controlled areas from the first to the third factory, the number of overhead cranes, lifting capacities, room temperature, humidity, and more. We encourage you to read it. 【Included Items (Partial)】 ■ Machine Name ■ Manufacturer ■ Model ■ Maximum Work Size (mm) ■ Door Width *For more details, please refer to the PDF document or feel free to contact us.

• Grinding Machine
• Machining Center
• 3D measuring device

We would like to introduce our "Cleanroom-Compatible Special Crane." It is equivalent to Cleanliness Class 6 (ISO 14644-1) and is constructed entirely of stainless steel (polished material), making it suitable for maintenance of semiconductor/display manufacturing equipment. We can manufacture special specifications tailored to your needs. 【Features】 ■ All stainless steel (polished material) construction ■ Equivalent to Cleanliness Class 6 (ISO 14644-1) ■ Maximum lifting capacity: 1000 kg ■ Installation in small spaces (low-headroom winch) ■ Ideal for maintenance of semiconductor/display manufacturing equipment *For more details, please refer to the PDF document or feel free to contact us.

• stainless
• Other abrasives
• crane

We offer "stone air sliders" that can accommodate high-precision travel positioning required for semiconductor, LCD inspection equipment, and manufacturing equipment. With a wide variety of options, we can meet various specifications, and in some cases, combinations of stone and ceramic materials are possible. Additionally, we can also manufacture sliders with large strokes exceeding 5000mm, so please feel free to consult us if you have any requests. 【Features】 ■ High straightness of 1μm/1000mm ■ Unique bearing design that makes it difficult to trigger pneumatic hammers ■ Minimal aging changes due to being made of stone, ensuring permanent precision maintenance ■ Capable of handling high load capacities of over 1 ton *For more details, please download the PDF or feel free to contact us.

• Semiconductor inspection/test equipment
• Other semiconductor manufacturing equipment

The "Handy Angle Tester HAT-700" is a product that allows for high-precision measurement of right angles, even without a 3D measuring device. Made of ceramic rails, it is free from rust concerns and does not require lubrication. Additionally, it can directly measure large products that cannot be placed on a 3D measuring device at the site. 【Features】 ■ Outstanding portability ■ Maintenance-free ■ No troublesome corrections needed for each measurement - High-precision measurements are possible using the inversion method - No master for correction is required *For more details, please download the PDF or feel free to contact us.

• Other measurement, recording and measuring instruments

Our company offers a "stone vacuum suction table" that can securely hold thin and lightweight workpieces on a highly precise flat surface without distortion, enabling precise coating processes, inspections, and various types of machining. By roughening the surface, we suppress charging during the detachment of glass substrates and prevent electrostatic breakdown of transistors formed in a glass-like manner. Additionally, we can achieve a surface roughness of approximately Ra 0.5 while maintaining flatness, compared to the standard lap surface finish of Ra 0.8. 【Features】 ■ As it is made of natural stone, there is almost no aging change. ■ It has low thermal conductivity, making it less susceptible to temperature changes, thus maintaining flatness. ■ Even if scratched, there is no "rebound," so flatness is maintained. ■ It is corrosion-free, clean, and maintenance-free. ■ When the workpiece is a glass substrate, it can suppress the generation of static electricity. *For more details, please download the PDF or feel free to contact us.

• Other processing machines
• Circuit board processing machine