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Pinion Gear: Model: 0.5 Mod; Teeth: 58T; Bore Size (Shaft Dia.): 10mm / 0.39"; Outer Dia. (Teeth Part): 30mm / 1.18"; Effective Teeth Length: 5mm / 0.2"; Step Size: 25mm x 7mm / 0.98" x 0.28" (D*H)
45# Carbon Steel: Made of 45# carbon steel, the pinion gear has better hardness, higher strength and resistance to deformation than ordinary A3 steel.
Surface Treatment: Frequency hardened parts have higher wear resistance, higher strength and lower notch sensitivity. Blackened surface can effectively prevent rust and oxidation.
Easy to Use: Be sure your RC motor shaft have the same diameter. Comes with set screws for each pinion gear, easy to install. Hardness of teeth surface: hard teeth surface.
Tips: Release the motor to install the pinion. Make sure to lock it on the flat part of the motor shaft. Good pinion gear replacement for your equipment.