Brand: SainSmart

Genmitsu Aluminum Spindle Holder for 3018-PRO

SKU: 101-63-SPH52P 3 reviews Variants ID: 39272365162575
$109.99 $119.99 Save $10.00
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Upgrade your 3018-PRO: Upgrade with a more powerful 300-500W spindle motor and Z-axis knob with a 52mm spindle mount. (This holder is not compatible with the original GS775 spindle.)

High Quality: The spindle carriage is made of high-quality aluminum for better rigidity and durability. High strength and long service life.

Stable and Reliable Performance: Can hold the motor firmly to increase stability and reduce noise. Limit switches and linear bearings are pre installed.

Delicate Appearance: All Metal design, drop in upgrade ready. Matches your 3018-PRO stock colors with the black sliver plating. It is practical and ideal for Genmitsu 3018-PRO.

Detailed Assembly Guide: With the detailed and clear installation guide in the package you can exchange the spindle hold on your own.

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Genmtisu-Aluminum-Spindle-Holder | SainSmart
Better Experience:

Feel free to upgrade your CNC with a more powerful 300-500W motor, it can hold the stepper motor firmly to increase precision and reduce noise.

Assembly Guide Included:

Limit switches and linear bearings are pre-installed. Every step for exchanging the spindle holder is written in the assembly guide in detail.


Used for 3018-PRO/Bakelite 3018-MX3 upgrade φ 52mm spindle or DIY engraving machine.

If you would like to add a laser to this spindle holder, you need to add an extra motor mount. You can download the 3D model to print one.



Material: Aluminum

Copper nut: Pitch 2mm, lead 4mm

Z-axis travel: 40mm

Spindle hole diameter: 52mm

Stepper motor: NEMA17 1.7A stepper motor

Limit switch: Normally open interface, terminal block XH2.54-3P


What’s included:

1*CNC Aluminum Z-Axis Sliding Table (Fully Assembled Includes Bearings)

1* Removeable Limit Switches

1*Assembly Guide

Customer Reviews
4.3 Based on 3 Reviews
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James M.
United States United States
Quality Z-Axis control and 52mm clamp

This design aids in cooling the 52mm Spindle Motor as well as being a solid mount. The build provides movement without vibration and includes limit switches.

robert g.
United States United States
Wrong spindle holder

My spindle holder was 42 mm that was 52

Mark E.
United States United States
Built like a tank

The spindle holder is very solid and well built. I've not yet installed it, but it seems much heavier than the stock plastic one. While it comes with limit switches, there's no documentation on how to wire them to the 3018-pro controller. The 3018-Pro has two connections, these limit switches have 3, labelled 12V, GND and IN. It appears that IN can be connected to the Z axis limit switch inputs top row and GND can be connected to the bottom row, which is ground. It appears that the only purpose of the 12V connection is to provide power for a small blue LED next to each switch that lights when the switch is tripped. I have found that the LEDs work fine with 5V which is available on the header with the limit switch inputs. However, there is a problem with the 3018-Pro controller, both Z axis limit switch inputs are in parallel and if either switch is tripped, both LEDs light. To get around this I installed a couple small diodes.