Bevel-gears. Those of equal diameters are termed “miter-gears.
ANIMATED, PBR
TEXTURES PACKED INSIDE
Files: BLEND, OBJ, FBX (Can convert for you to any format)
If you have any questions, feel free to ask.
BLEND (Blender, filesize: 3.96 MB), OBJ (OBJ, filesize: 2.36 MB), FBX (Autodesk FBX, filesize: 1.02 MB)