--- title: "Upgrade your printer: Stepper drivers (BCN3D Sigma)" description: Improve the performance and enjoy a more silent movement of the steppers with this upgrade --- [Skip to content](https://support.bcn3d.com/knowledge/upgrade-motor-drivers-bcn3d-sigma#main-content) - [English](https://support.bcn3d.com/knowledge/upgrade-motor-drivers-bcn3d-sigma) - [Español](https://support.bcn3d.com/es/knowledge/upgrade-motor-drivers-bcn3d-sigma) English Show submenu for translations [Contact support](https://support.bcn3d.com/knowledge/kb-tickets/new?hsLang=en) [Customer portal](https://support.bcn3d.com/repair-service?hsLang=en) ![knowledge-base-header-bcn3d-logo.png\]](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Header/knowledge-base-header-bcn3d-logo.png?height=40&name=knowledge-base-header-bcn3d-logo.png) - [Default HubSpot Blog](https://blog.bcn3d.com/) Open main navigation Close main navigation - [Default HubSpot Blog](https://blog.bcn3d.com/) - - [English](https://support.bcn3d.com/knowledge/upgrade-motor-drivers-bcn3d-sigma) - [Español](https://support.bcn3d.com/es/knowledge/upgrade-motor-drivers-bcn3d-sigma) English Show submenu for translations - [Contact support](https://support.bcn3d.com/knowledge/kb-tickets/new) - [Customer portal](https://support.bcn3d.com/repair-service) - [BCN3D forum](https://www.bcn3d.com/community/) [BCN3D forum](https://www.bcn3d.com/community/) Hello. How can we help you? - There are no suggestions because the search field is empty. 1. [Knowledge base - BCN3D](https://support.bcn3d.com/knowledge?hsLang=en) 2. [Sigma + Sigmax](https://support.bcn3d.com/knowledge/sigma-sigmax?hsLang=en) 3. [Maintenance](https://support.bcn3d.com/knowledge/sigma-sigmax?hsLang=en#maintenance) # Upgrade your printer: Stepper drivers (BCN3D Sigma) ## Improve the performance and enjoy a more silent movement of the steppers with this upgrade   | ** Tools** |   | | --- | --- | | ![allen-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/allen-icon.png?width=21&name=allen-icon.png) | > Allen key 2.5 mm | | ![allen-2-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/allen-2-icon.png?width=16&name=allen-2-icon.png) | > Allen key 2 mm | | ![socket-driver-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/socket-driver-icon.png?width=75&name=socket-driver-icon.png) | > 5.5 mm Socket wrench | ---   This guide is only for the early Sigma units that don't have the silent driver upgrade.   **Content:** [X Axis drivers](https://support.bcn3d.com/knowledge/upgrade-motor-drivers-bcn3d-sigma#x) [Y Axis driver](https://support.bcn3d.com/knowledge/upgrade-motor-drivers-bcn3d-sigma#y) [Z Axis driver](https://support.bcn3d.com/knowledge/upgrade-motor-drivers-bcn3d-sigma#z) [Extruder motor drivers](https://support.bcn3d.com/knowledge/upgrade-motor-drivers-bcn3d-sigma#extruder)   **Note:** Before starting the upgrade, raise the bed so you can have access to the Z driver, and then, turn off and disconnect the printer. | ![image-png-Aug-04-2020-02-26-39-55-PM](https://support.bcn3d.com/hs-fs/hubfs/image-png-Aug-04-2020-02-26-39-55-PM.png?width=295&name=image-png-Aug-04-2020-02-26-39-55-PM.png) | ![shifting8](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Draft/shifting8.png?width=629&name=shifting8.png) | | --- | --- |     ---   **X-Axis drivers**   | **1.** Remove the two Allen screws of the Driver holder. | ![screw-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/screw-icon.png?width=18&name=screw-icon.png)**x2 M3 8mm ** | | --- | --- | ![upgrade-driver-sigma-bcn3d-1](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-1.png?width=600&name=upgrade-driver-sigma-bcn3d-1.png) **2.** Disconnect the flat cable and the other connectors. ![upgrade-driver-sigma-bcn3d-2](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-2.png?width=600&name=upgrade-driver-sigma-bcn3d-2.png) | **3.** Remove the two screws and washers of the Driver. | ![screw-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/screw-icon.png?width=18&name=screw-icon.png)**x2 M3 6mm** ![washer-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/washer-icon.png?width=30&name=washer-icon.png)**x2** | | --- | --- | ![upgrade-driver-sigma-bcn3d-3](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-3.png?width=600&name=upgrade-driver-sigma-bcn3d-3.png) **4.** Assemble the new Driver with the spacer and holder with the same screws and washers in the same way as it was before.   ![upgrade-driver-sigma-bcn3d-4](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-4.png?width=600&name=upgrade-driver-sigma-bcn3d-4.png) **5.** Connect the flat cable and the other connectors to the Driver, and screw the two screws of the Driver holder.   ![upgrade-driver-sigma-bcn3d-1](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-1.png?width=600&name=upgrade-driver-sigma-bcn3d-1.png) ---   **Y-Axis driver** | **1.** Remove the two nuts and washers that are holding the Driver. | ![nut-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/nut-icon.png?width=36&name=nut-icon.png)**x2 M3 ** ![washer-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/washer-icon.png?width=30&name=washer-icon.png)**x2** | | --- | --- |   | ![upgrade-driver-sigma-bcn3d-5](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-5.png?width=387&name=upgrade-driver-sigma-bcn3d-5.png) | ![upgrade-driver-sigma-bcn3d-6](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-6.png?width=387&name=upgrade-driver-sigma-bcn3d-6.png) | | --- | --- |   **2.** Disconnect the flat cable and the other connectors. ![upgrade-driver-sigma-bcn3d-7](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-7.png?width=600&name=upgrade-driver-sigma-bcn3d-7.png) **3.** Connect the flat cable and the other connectors to the new Driver. | ![upgrade-driver-sigma-bcn3d-8](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-8.png?width=387&name=upgrade-driver-sigma-bcn3d-8.png) | ![upgrade-driver-sigma-bcn3d-9](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-9.png?width=387&name=upgrade-driver-sigma-bcn3d-9.png) | | --- | --- |   **4.** Assemble the new Driver in the correct position with the same spacer as it had before. ![upgrade-driver-sigma-bcn3d-10](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-10.png?width=600&name=upgrade-driver-sigma-bcn3d-10.png) ---   **Z-Axis driver** | **1.** Remove the cover by unscrewing the four screws. | ![screw-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/screw-icon.png?width=18&name=screw-icon.png)**x2 M3 8mm ** ![screw-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/screw-icon.png?width=18&name=screw-icon.png)**x2 M3.2 9.5mm** | | --- | --- |   ![upgrade-driver-sigma-bcn3d-11](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-11.png?width=600&name=upgrade-driver-sigma-bcn3d-11.png) | **2.** Remove the two nuts and washers that hold the Driver. | ![nut-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/nut-icon.png?width=36&name=nut-icon.png)**x2 M3 ** ![washer-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/washer-icon.png?width=30&name=washer-icon.png)**x2** | | --- | --- |   | ![upgrade-driver-sigma-bcn3d-12](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-12.png?width=387&name=upgrade-driver-sigma-bcn3d-12.png) | ![upgrade-driver-sigma-bcn3d-13](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-13.png?width=387&name=upgrade-driver-sigma-bcn3d-13.png) | | --- | --- |   **3.** Disconnect the flat cable and the stepper motor wire. ![upgrade-driver-sigma-bcn3d-14](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-14.png?width=600&name=upgrade-driver-sigma-bcn3d-14.png) **4.** Connect the flat cable to the new Driver. ![upgrade-driver-sigma-bcn3d-15](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-15.png?width=600&name=upgrade-driver-sigma-bcn3d-15.png) **5.** Assemble the new Driver in the correct position with the same spacer as it had before and then place the washers. Tighten the nuts and connect the stepper motor wire. | ![upgrade-driver-sigma-bcn3d-16](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-16.png?width=387&name=upgrade-driver-sigma-bcn3d-16.png) | ![upgrade-driver-sigma-bcn3d-17](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-17.png?width=387&name=upgrade-driver-sigma-bcn3d-17.png) | | --- | --- |   ---   **Extruder motor driver**   | **1.** Remove the metal cover by removing the two nuts. | ![nut-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/nut-icon.png?width=36&name=nut-icon.png)**x2 M3** | | --- | --- | ![upgrade-driver-sigma-bcn3d-18](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-18.png?width=600&name=upgrade-driver-sigma-bcn3d-18.png) | **2.** Remove the front spacers and disconnect the stepper motor wire and flat cable from the Driver. Then remove de Driver. | ![spacer-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/spacer-icon.png?width=36&name=spacer-icon.png)**x2** | | --- | --- |   | ![upgrade-driver-sigma-bcn3d-19](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-19.png?width=387&name=upgrade-driver-sigma-bcn3d-19.png) | ![upgrade-driver-sigma-bcn3d-20](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-20.png?width=387&name=upgrade-driver-sigma-bcn3d-20.png) | | --- | --- |   **3.** Connect the flat cable to the new Driver. Then place the Driver with the same back spacer and connect the Stepper motor wire.   | ![upgrade-driver-sigma-bcn3d-21](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-21.png?width=387&name=upgrade-driver-sigma-bcn3d-21.png) | ![upgrade-driver-sigma-bcn3d-22](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Upgrade%20drivers/upgrade-driver-sigma-bcn3d-22.png?width=387&name=upgrade-driver-sigma-bcn3d-22.png) | | --- | --- |   **Conclusions**   It's important to check the connections of flat cables before powering up the printer, you will find more information about this here: [How to check flat cable connections](https://support.bcn3d.com/knowledge/check-flat-cable-connections-bcn3d-sigma?hsLang=en) #### [Forum Community](https://support.bcn3d.com/knowledge/bcn3d-forum-community?hsLang=en) Need more tips? Check out our **[forum community](https://support.bcn3d.com/knowledge/bcn3d-forum-community?hsLang=en)** for more info about this   It's important to keep your printer in good shape to make the most out of it. In this chart, you can find a list of the extruder maintenance procedures and how frequently these should be done. [Maintenance Plan](https://support.bcn3d.com/knowledge/maintenance-plan-bcn3d-sigmax?hsLang=en)   ![bcn3d-recycle](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/bcn3d-recycle.png?width=27&name=bcn3d-recycle.png)  Take your e-waste to a certified recycler. [Check how we do it in BCN3D.](https://support.bcn3d.com/knowledge/environment-bcn3d?hsLang=en)   | **Parts** |   | Buy these parts | | --- | --- | --- | | ![driver-r19-bcn3d](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Components/driver-r19-bcn3d.png?width=107&name=driver-r19-bcn3d.png) | Sigma / Sigmax R17 \| R19 Driver YZE | [SKU 11931](https://www.bcn3d.com/product/driver/) | | ![driver-r19-bcn3d-x](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Components/driver-r19-bcn3d-x.png?width=107&name=driver-r19-bcn3d-x.png) | Sigma / Sigmax R17 \| R19 Driver X | [SKU 11930](https://www.bcn3d.com/product/driver/) |   | --- #### RELATED ARTICLES | | --- | | [![upgrade printer sigma EN](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Related%20Articles%20English/upgrade%20printer%20sigma%20EN.png?width=335&name=upgrade%20printer%20sigma%20EN.png)](https://support.bcn3d.com/knowledge/upgrade-bcn3d-sigma?hsLang=en)   | [![upgrade printer fan EN](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Related%20Articles%20English/upgrade%20printer%20fan%20EN.png?width=336&name=upgrade%20printer%20fan%20EN.png)](https://support.bcn3d.com/knowledge/upgrade-smart-fan-bcn3d-sigma?hsLang=en)   | | --- | --- | | **You can help improve the BCN3D Knowledge Base.** If you feel there are guides that we are missing or you found any error, please use this form to report it. **[Report form](https://share.hsforms.com/1F7t1sBuOQyWlAeRwwFSjgQ3fec5)** :) | | --- | - 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