This LEGO TECHNIC®-compatible double bevel gear has a rounded central hole so that it doesn't necessarily rotate with an axle passing through it.
Among other things, this allows for custom differentials to be built (high torque open differential, limited slip differential, ...), while using less space than a turntable.
This gear has a rather trivial placement of holes. A variation of this gear with a special disposition of holes, which can be used as a planetary gears carrier together with my ring 40-teeth gear
, is also available here
This is the second revision of the gear, which can withstand more torque than the first version without slipping when meshing with a bevel gear mounted on a perpendicular axle.
This product is in no way endorsed by nor affiliated with the LEGO Group. The LEGO® and LEGO TECHNIC®brands are only used here to suggest this product is compatible with the LEGO® line of toys. It is an original design and not a copy of a branded product.