[Sonic Mega 8K S] Replacing the Z-axis

Welcome to this guide on replacing the Z-axis for Sonic Mega 8K S. The Z-axis is an essential component that enables the printer to move the building plate up and down, allowing for precise layering during the printing process. Over time, the Z-axis may become worn or damaged, leading to issues such as layer shifting or uneven prints.

In this guide, we will walk you through the steps to replace the Z-axis on your Sonic Mega 8K S, ensuring that your printer is operating at its best and producing high-quality prints.

To learn how to replace the Z-axis in Sonic Mega 8K, watch our instructional video: Sonic Mega 8K - Z-axis replacement

Once you replace the z-axis, if the issue still persists please reach out to our customer support team for further assistance. When reaching out to us, please also provide us with photos/video of both the Motor Connections and a video for  Z-axis movement.

1. Before you Start

Before you start to replace the ball screw, here are basic components that you might need to know. Please refer to the picture below. Once you have recognized these components, please move on to the next section and start the replacement process.

2. Removing the Old Z-axis

Power Down and Rear Case Removal

• Turn off the printer and disconnect the power cable.
• Remove the rear case by loosening the 10 screws (see below pic).
• Slide off and remove the rear case with doors and put it aside.

Remove the z-axis module from the printer

• Disconnect both the sensor cable and motor cable.

• Remove 4 screws from the bottom of the ball screw.

• Remove the z-axis module from the printer.

Remove the old ball screw

• Remove the 6 screws of the z-axis transfer horizontally to remove the z-axis transfer.

• Remove the 4 screws of the z-axis transfer vertical to detach it from the conversion seat.

• Remove the 2 screws of the upper bearing and remove the upper bearing from the printer.

• Loosen the upper screw of the coupling.

• Remove the old ball screw.

2. Installing the New Z-axis

Install the ball screw to the z-axis module

• Combine the ball screw conversion seat with the ball screw and fix it with screws, without tightening them yet.

• Place the ball screw conversion seat with screw holes facing upward, install the screw, and attach the upper bearing (flat end facing down, concave end facing up).
• Push the upper bearing to the right and tighten the screws to secure it.

• Combine the ball screw conversion seat with the Z-axis transfers vertical, and fix it with screws, but do not tighten them yet.

• Push the Z-axis transfers horizontal to the middle of the Z-axis, push down the coupling seat, and push up the Z-axis transfers horizontal”. Tighten the screws after pinching them.

Coupling and Bearing Tightening

• Now you can tighten the screws of the coupling seat that were not tightened before.

• Combine the Z-axis transfers horizontal with the Z-axis transfers vertical. When combining, ensure that the lower edges are aligned and tighten the screws diagonally.

• Tighten the screws of the coupling.
• Install the entire Z-axis assembly to complete the replacement.
• Connect both the sensor cable and motor cable to the printer.

Printer Adjustment and Rear Case Installation

• Raise the printer back to its original position.
• Install the rear case back in place.

Completion

• Done.

Contact Support

By following the above instructions, you can install a new ball screw for your Sonic Mega 8K. If any issues arise during the steps, reach out to Phrozen support or your authorized reseller for further assistance. When contacting Phrozen support, kindly send some photos or videos illustrating the issue.