The exterior of the gearbox is completely symmetrical; however, it is NOT symmetrical internally. Depending on the orientation of the gearbox, the bevel gear on the output shaft could be on either side which will affect the rotation direction.
Before installing the gearbox, check the rotation direction by hand and orient it in the direction that produces the desired rotation direction.
With an efficient right-angle configuration, the Ultra 90 Degree Gearbox (REV-41-2080) (VIDEO) offers a robust solution to building a more compact robot. The Ultra 90 Degree Gearbox allows you to connect the UltraPlanetary Gearbox and the HD Hex Motor in a 90-degree orientation for maximum flexibility and ease of use in tight spaces. This versatile gearbox can also be used to transfer power between two 5mm hex shafts that are at a right-angle configuration.
Mounts directly to the output of the UltraPlanetary Gearbox
Mounting holes compatible with the REV Motion Pattern
Affix between pieces of channel in a channel drivetrain for a more compact design
Through-bore hex on the output allows positioning the gearbox in the middle of a shaft or using a very long shaft without needing to cut it
Blind socket hex input allows shafts of varying length and also captures the shaft when mounted to the output of an UltraPlanetary Gearbox
Ball bearings located on the input and output for a smooth performance
| Assembly Type | Hardware Size | Head Type |
|---|---|---|
For adding a Ultra 90 Degree Gearbox you will need all of the parts in the Hardware Kit, a 1.5mm Allen Wrench, and a 2mm Allen Wrench.
This assembly guide assumes you have a fully assembled UltraPlanetary Gearbox mounted to your motor of choice. Please see the UltraPlanetary Gearbox assembly instructions if you do not have a fully assembled UltraPlanetary Gearbox.
With standard REV channel or brackets, the recommended screw length for mounting the Ultra 90 Degree Gearbox to REV motor brackets or channels is M3 x 6mm (REV-41-1713). REV recommends that no more than 4mm of thread engagement is used to mount the gearbox on the motion pattern faces.
Ultra 90 Degree Gearbox
M3 x 40mm
Socket
Hex Shaft
5mm x 20mm
-
UltraPlanetary Face Mount Spacer
M3 x 40mm
Socket
1) Insert the 20mm long hex shaft into the output of the gearbox.
2) Place the Face Mount Spacer on the output of the the gearbox as shown.
Note: Line up the short edge of the spacer with a flat side of the UltraPlanetary gearbox body.
3) Rotate the hex shaft output so that it lines up with the hex input on the Ultra 90 Degree Gearbox.
4) Slide the two gearboxes together. Rotate the Ultra 90 Degree Gearbox until the spacer and gearbox body line up.
5) Insert the 4 mounting screws in the holes on the end of the Ultra 90 Degree Gearbox. Ensure that they line up with the holes in the spacer and the gearbox.
6) Tighten the 4 mounting screws hand-tight. Then alternate between slightly tightening screws diagonally across from each other in an X shaped pattern.
Note: Take care not to over tighten the mounting screws.
