A variety of high-quality products created by reliable technology. Rapid supply of precision products.
Maruni Seiki Co., Ltd. specializes in automotive parts, where skilled technicians challenge themselves with complex and intricate shapes that require strict product precision, completing high-precision components with rich imagination. Maruni Seiki's equipment is computer-controlled, allowing for processing and inspection down to the micron level, enabling the realization of high-quality products that meet customer needs. Furthermore, through collaboration between our in-house expertise and manufacturers, we are not only committed to the stable supply of high-precision and high-quality products but also strive for continuous improvement every day. For more details, please contact us or refer to our catalog.
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basic information
【Products Listed】 ○ Inner and outer rings for automotive bearings → Features: Major shape parts are managed with a shape measuring instrument at 10μm intervals. ○ Outer rings for automotive hubs → Features: As an important safety component, we conduct quality control at a high standard. Furthermore, by minimizing processing man-hours, we enable stable delivery times. ○ Parts for automotive transmissions (special shafts) → Features: As these are internal parts of the transmission, the shapes are complex, but by achieving single-chuck processing, we maintain the correlation of flange holes, recesses, and notches. ○ Bearing retainers → Features: Thin-walled workpieces with a thickness of 1mm are finished to a roundness of less than 60μm. ○ Parts for automotive E/C → Features: End face deep grooves and pulley grooves are processed using a unique cutting method to shorten processing time while maintaining precision. ○ Car air conditioning parts → Features: Special diamond tools allow for maximum rotation speed and feed rate, enabling a reduction in cycle time. ● For more details, please contact us or refer to the catalog.
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Company information
Maruni Seiki Co., Ltd. is a machining company located in Takasaki City, Gunma Prefecture. With a commitment to precision machining down to the micron level, we are involved in the production of parts for domestic and international automobile manufacturers, achieving high results. We are dedicated to honing our technology as a united team, and we sincerely ask for your continued support and patronage.