Response tailored to customer needs! Improvement of strength and hardness through high-frequency hardening of carburizing and screw parts.
We would like to introduce a case of processing crankshafts for agricultural machinery at our company. After forming the rough material and machining the center hole through cold forging, we performed rough machining of the outer diameter on a lathe, followed by drilling and keyway processing on a machining center. We requested a specialized heat treatment partner to improve strength and hardness through carburizing and high-frequency quenching of the threaded sections. Finally, the product is completed with grinding finish of the outer diameter and pin holes, as well as chamfering of the keyway. The dimensions are L54×φ12×φ10, with a flange diameter of φ55, and the material is chromium-molybdenum steel SCM415. 【Case Overview】 ■ Product Classification: Crankshaft ■ Delivery Industry: Outdoor machinery manufacturers ■ Application: Small outdoor machinery ■ Material: SCM415 ■ Size: L54mm (flange part: φ55mm) × φ12 × φ10 *For more details, please refer to the PDF document or feel free to contact us.
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【Processing Details】 ■ After rough material shaping by cold forging - Center hole machining - Outer diameter turning - Drilling - Keyway machining - Outer diameter grinding - Hole grinding - Keyway chamfering - Inspection - Shipping and packaging *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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Toyo Manufacturing Co., Ltd. is a metal processing company headquartered in Fuchu City, Tokyo, with a group company, Toyo Kyushu Co., Ltd., located in Bungo-Takada City, Oita Prefecture. Currently, we mainly engage in the manufacturing and sales of automotive parts (including critical safety components) and agricultural machinery parts. We excel in mass production but also accommodate prototypes, especially in pre-mass production prototypes, where we propose value engineering (VE) with an eye toward mass production. 【Main Products】 Stub shafts (automotive parts), drive shafts (automotive parts), balance shafts (automotive parts), crankshafts (outdoor machinery parts), drive pinions (automotive parts), motor shafts (automotive parts), etc. 【Certifications Obtained】 Quality Management System: ISO 9001:2015 Environmental Management System: KES Step 2 【Awards and Achievements】 2005 Tokyo Small and Medium Enterprises Manufacturing Human Resource Development Award (A recognition system for small and medium enterprises that have achieved results in the development of excellent skilled workers and the inheritance of skills, as recognized by Tokyo Metropolitan Government) 2022 Minister of Health, Labour and Welfare Award for Excellent Business in Skill Promotion (A recognition for establishments and organizations that have made significant contributions to skill promotion over many years and serve as models for others.)