Synchronizer Ring

[INQ. NO. 1801M01] Youngjin Precision Industrial’s synchronizer ring is mounted in a car’s manual transmission. In order to distribute appropriate power according to vehicle speed, each gear stage has a different gear ratio composed of different gears. The gears of each stage have different sizes with a different number of teeth, which allow the gears at each stage to rotate at different speeds even when driving the vehicle at a constant speed.
To create the optimal driving conditions, two different gears with different gear ratios have to connect to each other, and this is defined as gearshift. If there is a manual transmission without a synchronizer ring, gearshift can only be performed at a certain speed ratio (speed) that makes two different gears combine (e.g. gearshift to 2nd gear at 20km, 3rd gear at 40km, and so forth).
In order to remove this discomfort, a synchronizer ring was developed and it allows two different gears with different RPM to have the same RPM when the gear is being shifted. With this help of a synchronizer ring, automobiles nowadays can easily perform a gearshift at any given speed ratio.

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