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[Use] pinion
1, the pinion gear shaft is generally (less the number of teeth of the gear)
2, the gear shaft is generally in the high-speed stage (that is, low-torque stage)
3, as the shift gear shaft seldom slip gear, running gear are generally fixed, first, because in the high-speed stage, the speed is carried discomfort slip shifts.
4, the gear shaft and the gear shaft is a synthetic whole, however, in the design, or to try to shorten the length of the shaft, one is too long is not conducive to the hobbing process, and second, the support shaft axis to cause too bold and increase the mechanical strength (e.g., rigidity, deflection, bending, etc.)

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