東陽製作所 List of Products and Services

We would like to introduce a case study of motor shaft processing that we conducted. This is an automotive component, with dimensions of L92×φ15×φ20, made from S45C bar material. After cutting the material, we performed turning on the screw side, turning on the spline side, spline rolling, high-frequency hardening and tempering, screw rolling, outer diameter grinding on the screw side, outer diameter grinding on the spline side, and finishing grinding, resulting in the completed product. 【Case Overview】 ■Product Classification: Motor Shaft ■Delivery Industry: Automotive Industry ■Usage: Other ■Material: S45C ■Size: L92×φ15×φ20 *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing

We would like to introduce a case of processing crankshafts for agricultural machinery at our company. The size is L54×φ12×φ10, with a flange diameter of φ55, and the material is chromium-molybdenum steel SCM415. The rough material is shaped by cold forging, followed by center hole processing, rough machining of the outer diameter on a lathe, and drilling and keyway processing on a machining center. We requested a specialized heat treatment partner to enhance strength and hardness through carburizing and high-frequency quenching of the threaded area. The finished product is completed with grinding of the outer diameter and pin hole, as well as chamfering of the keyway. 【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.

• Contract manufacturing

We would like to introduce a case study of the processing of balance shafts for automotive engines that we conducted. The product underwent intermittent cutting processing on the outer diameter using a lathe. Generally, lathe processing is performed with continuous cutting, but in the case of intermittent cutting, the tool is pressed against the material intermittently, making it prone to chipping and vibration, which increases the difficulty of maintaining stable processing accuracy. Our company has the know-how to achieve both extended tool life and dimensional accuracy. We can consistently perform high-precision, high-quality mass production processing of several thousand to tens of thousands of units per month while maintaining tool life. 【Case Overview】 ■ Product Classification: Balance Shaft ■ Delivery Industry: Automotive Industry ■ Application: Engine Parts ■ Material: S40C ■ Size: L244mm, Balance Section: R28.5, Shaft Diameter: Maximum φ35, Minimum φ12.5 *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing

We would like to introduce a case study of stub shaft processing that we conducted. This is a component for automotive propeller shafts, with a size of L214. The maximum outer diameter of the disc part is φ85, and the outer diameter of the shaft part ranges from φ27 to φ62. After centering the hot-forged rough material, we performed rough machining of the outer diameter using a lathe, inner diameter machining of the cup part, and spline rolling processing, followed by grooving and finishing of the outer diameter. Heat treatment and serration cutting are then carried out to complete the process. 【Case Overview (Partial)】 ■Product Classification: Stub Shaft ■Delivery Industry: Automotive Industry ■Application: Propeller Shaft Components ■Material: SV45C *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing

We would like to introduce a case study of drive pinion processing that we conducted. This is an automotive transmission component, with dimensions of L258×Φ25×Φ77, made from forged material CSM320H. After centering processing, rough cutting of the shaft, cutting of the inner and outer diameters of the cup section, and finishing cutting of the shaft were performed. Subsequently, end face gear cutting and shaft spline processing were carried out, and finally, it was completed with oil cleaning. 【Case Overview】 ■Product Classification: Drive Pinion ■Delivery Industry: Automotive Industry ■Application: Transmission Component ■Material: SCM320H ■Size: L258×φ25～φ77 *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing

We would like to introduce a case where we processed a drive shaft for automotive steering. After cutting the drawn material (bar stock), machining the shaft section, and rolling the threads, splines, and serrations, we performed high-frequency treatment on the threaded section, and finally finished it with outer diameter grinding. The size is L105mm × Φ13 to Φ20, and the material used is S45C drawn material (bar stock). 【Case Overview】 ■ Product Classification: Drive Shaft ■ Delivery Industry: Automotive Industry ■ Application: Steering Components ■ Material: S45C ■ Size: L105mm × φ13 to φ20 *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing

We would like to introduce a case where we processed a drive shaft for automotive steering. The delivery industry is the automotive industry. The size is L105mm × Φ13Φ × Φ20, and the material used is S45C drawn material (bar stock). After cutting the drawn material (bar stock), machining the shaft section, and rolling the threads, splines, and serrations, high-frequency treatment is performed on the threaded section, and finally, it is finished with outer diameter grinding. 【Case Overview】 ■ Product Classification: Drive Shaft ■ Delivery Industry: Automotive Industry ■ Application: Steering Components ■ Material: S45C ■ Size: L105mm × φ13 to φ20 *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing

We would like to introduce a case of processing crankshafts for agricultural machinery engines at our company. The size is L31mm × φ10, with a flange diameter of φ44. The material used is chromium-molybdenum steel SCM415. The rough material is shaped through cold forging and center hole processing, followed by rough machining of the outer diameter on a lathe, and drilling and keyway processing on a machining center. We have requested a specialized partner company for heat treatment, which improves strength and hardness. The finished product is completed with grinding of the outer diameter and pin holes, as well as chamfering of the keyway. [Case Overview] ■ Product Classification: Crankshaft ■ Delivery Industry: Outdoor machinery manufacturers ■ Application: Small outdoor machinery ■ Material: SCM415 ■ Size: L31mm (flange part: φ44mm) × φ10 *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing

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, the outer diameter is roughly processed on a lathe, and then drilling and keyway processing are performed on a machining center. We request a specialized partner company for heat treatment to enhance strength and hardness. Finally, the product is completed with grinding finishes on the outer diameter and pin holes, as well as chamfering of the keyway. The size is L56×φ12×φ10, with a flange diameter of φ53, and the material is chromium-molybdenum steel SCM415. 【Case Overview】 ■Product Classification: Crankshaft ■Delivery Industry: Outdoor Machinery Manufacturer ■Application: Small Outdoor Machinery ■Material: SCM415 ■Size: L56mm (Flange: φ53mm) × φ12 × φ10 *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing

We would like to introduce a case study of machining crankshafts for agricultural machinery at our company. After performing center hole processing for lathe machining, we carried out outer diameter turning, threading, and drilling on the shaft section. We requested a specialized partner company for heat treatment, which hardens the surface. At this time, if the heat treatment penetrates too much into the threaded section, it can become brittle, which is critical for shafts that require toughness. Therefore, we enhance toughness (ductility) through high-frequency tempering. 【Case Overview】 ■ Product Classification: Crankshaft ■ Delivery Industry: Outdoor machinery manufacturers ■ Application: Small outdoor machinery ■ Material: SCM415 ■ Size: L65mm (Flange part: φ53mm) × φ15 × φ10 *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing

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 hardening of the threaded areas. The finished product is completed with grinding of the outer diameter and pin holes, as well as chamfering of the keyway. 【Case Overview】 ■ Product Classification: Crankshaft ■ Delivery Industry: Outdoor machinery manufacturers ■ Application: Small outdoor machinery ■ Material: SCM415 ■ Size: L50mm (Flange part: φ47mm) × φ12 × φ10 *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing

We would like to introduce a case of machining crankshafts for agricultural machinery at our company. The material used is chromium-molybdenum steel SCM415. After forming the rough material and machining the center hole through cold forging, the outer diameter is roughly machined on a lathe, and then drilling and keyway processing are performed on a machining center. We commissioned a specialized heat treatment partner to improve strength and hardness through carburizing and high-frequency hardening of the threaded areas, and the finished product is completed with grinding of the outer diameter and pin holes, as well as chamfering of the keyway. [Case Overview] ■ Product Classification: Crankshaft ■ Delivery Industry: Outdoor machinery manufacturers ■ Application: Small outdoor machinery ■ Material: SCM415 ■ Size: L50mm (flange part: φ47mm) × φ12 × φ10 *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing

We would like to introduce a case study of processing crankshafts for agricultural machinery at our company. Generally, lathe processing is performed with continuous cutting, but in the case of intermittent cutting, the tool is pressed against the material intermittently, making it prone to chipping and vibration, which makes it difficult to maintain stable machining accuracy. Using chips that are less likely to chip is a prerequisite, but even so, fine adjustments such as controlling the feed rate and cutting depth to prevent the cutting edge from chipping are required. 【Case Overview】 ■Product Classification: Crankshaft ■Delivery Industry: Outdoor Machinery Manufacturer ■Application: Small Outdoor Machinery ■Material: SCM415 ■Size: L65mm (Flange part: φ47mm) × φ12 × φ10 *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing

We would like to introduce a case of processing crankshafts for agricultural machinery engines at our company. The material used is alloy steel for mechanical structures, with dimensions of L57×φ15 and a flange diameter of φ64. The rough material is shaped through hot forging, followed by center hole processing. The outer diameter is then roughly machined on a lathe, and pin holes are drilled and threads are rolled before heat treatment is performed to enhance strength and hardness. Finally, the crankshaft is completed through grinding and finishing of the outer diameter and pin holes. 【Case Overview】 ■ Product Classification: Crankshaft ■ Delivery Industry: Outdoor machinery manufacturers ■ Application: Small outdoor machinery ■ Material: Alloy steel for mechanical structures ■ Size: L57mm (flange: φ64mm) × φ15 *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing

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.

• Contract manufacturing

We would like to introduce a case study of processing crankshafts for agricultural machinery engines at our company. In the heat treatment of the shafts, we first perform carburizing and high-frequency quenching. By heating the workpiece to a high temperature and then rapidly cooling it, we can increase its hardness. While quenching increases hardness, it also has the disadvantage of making the material brittle. Therefore, we perform tempering to enhance toughness (ductility). By heating the workpiece at a temperature lower than the quenching temperature and holding it for a certain period before slowly cooling it, we can achieve high toughness. 【Case Overview】 ■ Product Category: Crankshaft ■ Delivery Industry: Outdoor Machinery Manufacturer ■ Application: Small Outdoor Machinery ■ Material: SCM415 ■ Size: L66mm (Flange: φ55mm) × φ12 × φ10 *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing

We would like to introduce a case of processing crankshafts for agricultural machinery at our company. The size is L66×φ12×φ10, with a flange diameter of φ55. The material is chromium-molybdenum steel SCM415. After machining the center hole, rough machining of the outer diameter and threading is performed on a lathe, followed by heat treatment. After that, finishing of the outer diameter and pin hole is done, resulting in the completed product. 【Case Overview】 ■Product Classification: Crankshaft ■Delivery Industry: Outdoor Machinery Manufacturer ■Application: Small Outdoor Machinery ■Material: SCM415 ■Size: L66mm (flange part: φ55mm) × φ12 × φ10 *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing

We would like to introduce a case of processing crankshafts for agricultural machinery at our company. After forming the rough material through cold forging and applying heat treatment (quenching and tempering), we perform rough machining of the outer diameter using a lathe. Key grooves and thread rolling are carried out, and the shaft section and pin holes are finished with polishing. The tempering process, one of the heat treatments, involves reheating to over 550°C after quenching, which forms a sorbite structure and achieves high toughness (ductility). 【Case Overview】 ■ Product Classification: Crankshaft ■ Delivery Industry: Outdoor machinery manufacturers ■ Application: Small outdoor machinery ■ Material: S43C ■ Size: L62mm (flange part: φ48mm) × φ12 *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing

We would like to introduce a case study of processing crankshafts for agricultural machinery at our company. The size is L48×φ12, with a flange diameter of φ48. After cold forging to shape the rough material and heat treatment (quenching), rough machining of the outer diameter is performed on a lathe. Then, keyway and thread rolling processes are carried out, followed by polishing of the shaft section and pin holes to complete the product. Our company possesses a wide range of equipment, including NC lathes and machining centers, as well as our own manufactured rolling machines and hob machines, allowing us to excel not only in turning and milling but also in gear cutting and thread rolling. Please feel free to contact us with any inquiries. 【Case Overview】 ■Product Classification: Crankshaft ■Delivery Industry: Outdoor machinery manufacturers ■Application: Small outdoor machinery ■Material: S43C ■Size: L48mm (flange section: φ48mm) × φ12 *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing

We would like to introduce a case of machining crankshafts for agricultural machinery at our company. This product is a mechanism that converts the up-and-down motion of the piston inside the engine into rotational motion. The power is transmitted to the transmission through the connecting rod and flywheel, causing the wheels to rotate. Our company is capable of building dedicated lines using gantry loaders, allowing us to excel in mass production of tens of thousands of shafts per month tailored to our customers' needs. [Case Overview] ■ Product Classification: Crankshaft ■ Delivery Industry: Outdoor Machinery Manufacturers ■ Application: Small Outdoor Machinery ■ Material: S43C ■ Size: L47mm (Flange: φ45mm) × φ10 *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing

Toyo Manufacturing Co., Ltd. specializes in processing and assembly of metals, focusing on mass-produced shafts, including cutting, rolling, heat treatment, and grinding. We produce important precision parts, including critical safety components for automobiles, small engines, construction machinery, electronic devices, and machine tools. Based on the insights and know-how gained from numerous transactions with our customers, we are currently offering a collection of VA/VE case studies for the automotive industry, featuring 11 examples, and a collection for the agricultural machinery industry, featuring 6 examples. We have included VA/VE case studies related to stub shafts, balance shafts, and crankshafts, so please check the details by downloading the PDF. [Excerpt from the VA/VE case study collection for the automotive industry] ■ Case study on reducing man-hours per unit by having two production lines for equipment. [Excerpt from the VA/VE case study collection for the agricultural machinery industry] ■ Case study on cost reduction through dimensional changes and processing elimination for mass-produced agricultural machine parts. *For more details, please download the PDF or feel free to contact us.

• Tool Sets

Toyo Manufacturing Co., Ltd. specializes in processing and assembly, focusing on mass-produced shafts, including metal cutting, rolling, heat treatment, and grinding. We produce critical precision parts, including important safety components for automobiles, small engines, construction machinery, electronic devices, and machine tools. Based on the insights and know-how gained from numerous transactions with our customers, we are currently offering a collection of six VA/VE case studies for mass-produced shafts in the agricultural machinery industry! These case studies include examples of VA/VE for crankshafts, so please check the details by downloading the PDF. [Excerpt of Contents] - Cost reduction cases through dimensional changes and processing-free methods for mass-produced agricultural machinery parts - Cost reduction cases through dimensional and shape changes for mass-produced shafts - Improvement cases of defective product rates by extending tool life in crankshaft mass production processing *For more details, please download the PDF or feel free to contact us.

• Tool Sets

Toyo Manufacturing Co., Ltd. specializes in processing and assembling metal components, focusing on mass-produced shafts, including cutting, rolling, heat treatment, and grinding. We produce critical precision parts, including important safety components for automobiles, small engines, construction machinery, electronic devices, and machine tools. Based on the insights and know-how gained from our numerous transactions with customers, we are currently offering a collection of VA/VE case studies in the automotive industry, featuring 11 examples of VA/VE for mass-produced shafts. This includes case studies on stub shafts and balance shafts, and you can find more details by downloading the PDF. [Excerpt of Contents] - Case study on reducing man-hours per unit through dual-line equipment - Cost reduction case study for tools used in the cutting process of stub shafts - Cost reduction case study by extending the lifespan of hob tools *For more details, please download the PDF or feel free to contact us.

• Tool Sets

Toyo Manufacturing Co., Ltd. is a manufacturer that engages in processing such as metal cutting, rolling, heat treatment, and grinding, as well as assembly. We also produce important precision parts, including critical safety components for automobiles, small engines, construction machinery, electronic devices, and machine tools. In the future, we will enhance our facilities and strengthen human resource development to respond to the further diversification of customer needs, and we will continue to improve in all aspects, including quality and cost. Please feel free to contact us with any requests. 【Main Products】 ■ Stub Shafts ■ Crankshafts ■ B/S Nuts ■ Hub Turbines ■ Stub Yokes ■ Auto Oilers *For more details, please download the PDF or feel free to contact us.

• Tool Sets
• nut