GPM MG528T/0.5M 45 Steel Motor Gear 28T (48 Pitch, Module 0.5mm, Motor Tooth Diameter 5mm)  [MG528T/0.5M]

45 Steel 28T Motor Gear Overview

This GPM MG528T/0.5M is a 28-tooth motor pinion made from 45 steel and cut for 48-pitch gear systems with a 0.5mm module and a 5mm motor bore. It is an RC-scale component intended for electric model drive trains where 48-pitch gearing is used.

Use this gear when replacing a worn pinion or when swapping to a 28T ratio within a 48-pitch setup. The 45 steel material gives a durable mating surface; however, proper mesh and alignment remain essential to avoid accelerated wear on adjacent plastic or metal gears.

Installation notes: confirm the motor shaft bore matches the 5mm diameter, set the axial position to obtain the correct gear mesh, secure the pinion fastener and recheck for endplay. After initial runs, inspect tooth engagement and fastener tightness and make small adjustments to mesh as needed for smooth operation.

Tuning role: changing to this 28T pinion adjusts the driven ratio in predictable steps for on-track tuning, balancing acceleration and top speed within the constraints of your motor and ESC setup while staying within 48-pitch gear compatibility.