Internal Gears
QTC internal gears are available in modules 0.5 to 3. They are available in a range of 50 to 200 teeth and can be used in conjuction with our spur gears to create a planetary gear devices with different transmissions. Click any of the internal gear images below to view full details of that gear.
Click here for technical information on our internal gears.

KSI
Steel Internal Gears
Modules 0.5 ~ 3
KSI Module 0.5

KSI Module 0.8
KSI Module 1
KSI Module 1.5
KSI Module 2
KSI Module 2.5
KSI Module 3

KSIR
Steel Ring Gears (Spur Gears)
Modules 2 ~ 3
KSIR Module 2

KSIR Module 2.5
KSIR Module 3