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Belt, Timing SX2 Mini Mills

Belt, Timing SX2 Mini Mills - Main image
$8.7 $12.79 In stock

Timing Belt for the HiTorque mini mill models 3900, 3960, 3990 and 4190. This belt also fits MicroLux 84630, SIEG SX2, SX2L & SX2LF, and BusyBee CX612 mini mills.
The belt is a 350-5M-15 (350mm pitch length, 5mm pitch, 15mm width) with 70 teeth.
See the Used On data for drawing number for each machine.

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Customer Reviews (5.0 / 5 · 5 reviews)

James ★★★★★

Swapped out the stock belt on my 3960 after it started slipping, and the 350mm length was spot on for a direct fit. The 5M tooth profile grips the pulleys noticeably firmer than the old one, and it runs quieter at higher spindle speeds.

Samuel ★★★★★

Installed this 350-5M-15 belt on my SX2 and got the spindle running smooth again, no slipping even under a heavy cut. The 15mm width fit perfectly into the stock pulleys, which was my main worry.

Robert ★★★★★

I needed a new timing belt after my original started slipping, and this 350-5M-15 fit my SX2L perfectly without any adjustments. The rubber feels more durable than the old one, and my mill runs quieter now.