Gear Case Assembly NA088103

Acting as the heart of the drill's transmission system, this gear case assembly houses and supports the internal gears that transfer power from the motor to the chuck while managing speed, torque, and hammer-drill functions. Designed for smooth power delivery and reliable performance, it helps maintain proper alignment of drivetrain components under demanding drilling and fastening applications. Manufactured to original equipment standards, this assembly is an ideal replacement for a worn or damaged gearbox, helping restore operating efficiency, drilling performance, and long-term tool reliability.