Products for bench top machinists | LittleMachineShop.com

Transmission Gear Kit, R8 Mini Mill, Metal

Transmission Gear Kit, R8 Mini Mill, Metal - Main image
$59.16 $79.95 In stock

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 our Belt Drive Conversion Kit and skip the gears altogether.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Daniel K. ★★★★★

The steel gears on this kit feel incredibly solid compared to the plastic ones that came stock. After swapping them in, my mill runs much quieter and handles tougher cuts without any hesitation. Definitely worth the upgrade for anyone using their mini mill regularly.

Harper ★★★★★

Was a bit worried about the installation, but the metal gears fit perfectly and feel much sturdier than the original plastic ones. The whole unit runs noticeably smoother now and should last way longer.

Victoria L. ★★★★★

Installed these metal gears and immediately noticed how much quieter the mill runs compared to the plastic originals. The precision fitment meant zero adjustment hassle during swap. Exactly what I needed for long-term durability.