Enhance the longevity and reliability of your mini mill with our R8 metal transmission gear replacement set. Once this steel gear set is installed on your mini mill, you will no longer have to worry about breaking the hard-to-replace gears inside the headstock.
This set includes three gears – Spindle gears 1 and 2, and a 2-speed intermediate shaft gear – that are crucial for the smooth operation of the headstock. These gears are made of durable metal, ensuring they can withstand the rigors of regular use.
- Gear, R8 Spindle No. 2, Mini Mill, Metal (3456)
- Gear, R8 Spindle No. 1, Mini Mill, Metal (3457)
- Gear, 2-Speed Intermediate Shaft, Metal (3451)
With this replacement set, you’ll no longer have to worry about the inconvenience and cost of replacing broken gears inside the hard-to-reach headstock. Upgrade your mini mill’s performance and ease of use with this essential replacement set.
On the mini mill, the easy-to-replace intermediate gear on top of the headstock is still plastic. This helps to ensure that you don’t break expensive and hard to replace parts.
*Compatible with SIEG X2 mini mills with R8 spindle
** If you are considering this upgrade, we encourage you to consider ourBelt Drive Conversion Kit and skip the gears altogether.

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