Gear, Spindle 45 Teeth, Micro Mill

Name: Gear, Spindle 45 Teeth, Micro Mill
Brand: Sieg Industrial Group
SKU: 2097
Price: 2.18 USD
Availability: InStock
Rating: 4.4 (5 reviews)

Gear, Spindle 45 Teeth, Micro Mill - Main image

$2.18 ~~$2.95~~ In stock

Gear, Spindle 45 Teeth is a replacement spindle gear for the Micro Mill. It is listed under the Sieg Industrial Group brand and carries the SKU 2097.

Product: Gear, Spindle 45 Teeth
Application: Micro Mill
Brand: Sieg Industrial Group
SKU: 2097
Sold as the Standard option

Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy

If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy

Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy

Returning an item

Check the return conditions before sending anything back.

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

View policy

Customer Reviews (4.4 / 5 · 5 reviews)

Emily ★★★★★ Oct 22, 2026

The 45-tooth gear meshed perfectly with my micro mill's drive train, and the steel feels noticeably denser than the original plastic part. It took about 15 minutes to swap in, and now the spindle runs smoothly without any wobble.

Hazel Y. ★★★★★ Oct 19, 2026

Installed this 45-tooth gear on my Micro Mill and the fit was spot-on — no filing or adjustment needed. The brass teeth engaged smoothly with the drive gear right out of the packaging.

William ★★★★★ Oct 18, 2026

The 45 teeth mesh perfectly with my micro mill’s spindle, and the replacement was a drop-in fit—no filing or shimming needed. It’s got that solid, machined feel that makes me trust it won’t strip out mid-job. Exactly what I needed to get the mill running again.