[Company Introduction]

1. History

1996  Established Samwon Auto Parts Co., Ltd.

2002 Established Samwon Precision Industry Co., Ltd.

2007 Acquired ISO9001 certification

2007 Moved to new factory

2007 Selected as a promising small business(by Daegu Bank)

2011 Changed the company name to Hyun Sung Co.

2011 Acquired ISO / TS16949 certification

2. Vision

Established in 1996, Hyunsung Co., Ltd. has been producing more than 95% of the brake drums applied to large-sized vehicles currently operating in Korea as a result of steady product development and quality improvement efforts. After strict quality control, we are supplying to national distributors. In addition to drums, we produce brake hubs, flywheels, trunnion seats, trunnion shafts, and parking brake drums. In line with the rapid changes in the global automobile industry, we are expanding our base of overseas production and distribution bases to ensure our price competitiveness, add new items, and continuously innovate our quality to meet our customers' beliefs.

[Product Description]

The flywheel is mounted on the crankshaft transmission and functions to reduce the unbalance by maintaining the crankshaft torque. In each cylinder, an expansion force is generated once per two revolutions of the crankshaft to rotate the shaft. However, in the other stroke (compression, intake and exhaust), a reverse force is required. Thus, without the flywheel, the rotation of the crankshaft is pulsating, The interval of the expansion stroke becomes longer, such as idling, and the engine is stopped.

[Product Features]

A ring gear is on the outer periphery of the flywheel. When the engine is started, the pinion gear of the starter motor engages with the ring gear to rotate the crankshaft.  The side is flat, and the clutch disc is squeezed by the tension of the spring and the power of the engine is transmitted to the transmission. The action of the car increases when the rotational force (torque generated by inertia) that rotates the shaft is large. The magnitude of the torque is the magnitude of the force multiplied by the distance from the center of the shaft to the point where the force is applied. Since the magnitude of force is proportional to the mass of inertia, the flywheel is heavier, the larger the outer diameter, and the heavier the surroundings, the greater the flywheel motions.

* In addition to flywheels, we have products such as brake drums, brake hubs, clutch booster, and trunnion seats.

- Brake drum

- Brake hub

- Trunnion Seat

- Clutch Booster