BIQU 3D B1 Idler gear 2GT

Replacement idler gear/pulley for the BIQU B1, compatible with 2GT (GT2, 2 mm pitch) timing belts. Guides and tensions the X/Y belt for smooth and accurate motion.

Key Features

Compatibility: BIQU B1; for 2GT/GT2 timing belts used on X/Y axes.
Function: Free-spinning idler that maintains belt path and tension for stable positioning.
Direct 1:1 replacement fitting the original bracket/post (match belt profile and width to your original).
Helps reduce belt mis-tracking, slip, and ringing caused by worn or rough idlers.
Machined pulley with integrated bearings for low-friction rotation.
Installation tip: power off; release the belt tensioner, swap the idler, align parallel to the belt, re-tension firmly (not overtight), then re-home X/Y and run a short movement test.