> For the complete documentation index, see [llms.txt](https://docs.revrobotics.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.revrobotics.com/duo-build/ftc-starter-kit-gear-drivetrain/middle-grip-wheel-assembly.md).

# Middle Grip Wheel Assembly

## Middle Grip Wheel Assembly Parts Required

| **PART NUMBER**                                         | **DESCRIPTION**             | **QTY.** |
| ------------------------------------------------------- | --------------------------- | -------- |
| [REV-41-1267](https://www.revrobotics.com/rev-41-1267/) | 90MM GRIP WHEEL             | 1        |
| [REV-41-1322](https://www.revrobotics.com/rev-41-1322/) | END CAP BEARING             | 1        |
| [REV-41-1323](https://www.revrobotics.com/rev-41-1323/) | 15MM SPACER                 | 1        |
| [REV-41-1324](https://www.revrobotics.com/rev-41-1324/) | 3MM SPACER                  | 2        |
| [REV-41-1327](https://www.revrobotics.com/rev-41-1327/) | SHAFT COLLAR                | 1        |
| [REV-41-1329](https://www.revrobotics.com/rev-41-1329/) | THROUGH BORE BEARING - LONG | 1        |
| [REV-41-1337](https://www.revrobotics.com/rev-41-1337/) | 90 TOOTH PLASTIC GEAR       | 1        |
| [REV-41-1349](https://www.revrobotics.com/rev-41-1349/) | 5MM X 135 MM HEX SHAFT      | 1        |

## Middle Grip Wheel Assembly Steps

|                                                                     |                                                                                                                                                                                                   |
| ------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| <img src="/files/-MI622PFdgIZXcZMOFhT" alt="" data-size="original"> | Add an End Cap Bearing to the 135 mm x 5mm Hex Shaft.                                                                                                                                             |
| <img src="/files/-MI61ysk-oyOT7nlvO9k" alt="" data-size="original"> | Slide a 3mm Spacer onto the shaft.                                                                                                                                                                |
| <img src="/files/-MI61TaDzGQ8-LcqkJJA" alt="" data-size="original"> | Slide a 90mm Grip Wheel onto the shaft.                                                                                                                                                           |
| <img src="/files/-MI61QfduQsR1ZPmyTE4" alt="" data-size="original"> | Slide a 90 Tooth Plastic Gear onto the shaft.                                                                                                                                                     |
| <img src="/files/-MI61KgC_skmS2_rH-03" alt="" data-size="original"> | Slide a 15mm Spacer onto the shaft.                                                                                                                                                               |
| <img src="/files/-MI61DPPUvenARDeBAHT" alt="" data-size="original"> | Slide a 3mm Spacer onto the shaft.                                                                                                                                                                |
| <img src="/files/-MI5vDvDG2YfETnUC39U" alt="" data-size="original"> | Slide a Shaft Collar onto the shaft. Make sure the shaft collar is flush with the 3mm Spacer. Tighten the set screw.                                                                              |
| <img src="/files/-MI5v9NeB5oS7WCIdo_5" alt="" data-size="original"> | <p>Slide a Through Bore Bearing - Long onto the Shaft.</p><p><strong>Note:</strong> the longer portion of the bearing faces away from the Shaft Collar.</p>                                       |
| <img src="/files/-MI5uPcN9TfDAHr7Ewva" alt="" data-size="original"> | <p><strong>MIDDLE GRIP WHEEL ASSEMBLY COMPLETE</strong></p><p></p><p>Repeat the above steps until there are <strong>two</strong> completed Middle Grip Wheel Assemblies. Set aside for later.</p> |