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X/Y-Axis Idler Pulley for Bambu-Lab P2S and X2D | 2-Pack CoreXY Timing Belt Guide Wheel Replacement, Smooth Flanged Bearing Pulley to Fix 3D Printer Squeaking Noise

-15% $ 16 .88 $19.88
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Description
2-Pack X/Y Axis Idler Pulley Replacement for Bambu Lab P2S / X2D The CoreXY motion system of your 3D printer relies on a series of idler pulleys to guide and tension the timing belts. Over long periods of high-speed printing, the internal bearings of these pulleys can wear out, leading to increased friction and mechanical drift. 💡 Signs of a Failing Idler Pulley: Noticeable squeaking, rattling, or grinding noises from the corners or the back of the machine during print head movement. Visible black dust gathering around the pulley, indicating abnormal belt edge wear. The pulley feels stuck, loose, or gritty when turned by hand while the machine is off. 🔧 Where Can These Be Installed? There are exactly 12 idler pulleys in total on the P2S and X2D printers. This 2-pack can be used to replace any of the following components: Front left and front right corners (1 each). Back left and back right corners (2 each). XY belt tensioners at the rear (1 each). Left and right Y rollers (2 each). Replacing worn idlers in pairs (e.g., both rear tensioner idlers) is a practical approach to maintain balanced belt tension and prevent print artifacts like ringing or layer shifts.
2-PACK COMPATIBLE REPLACEMENT: This package includes 2 pieces of smooth flanged idler pulleys designed as direct replacement parts for Bambu Lab P2S and X2D 3D printers. They match the original equipment to reliably restore your printer's motion system.
CORE-XY MOTION RESTORATION: These free-spinning bearing pulleys act as essential timing belt guide wheels. They effectively redirect and maintain tension on the timing belts driving the CoreXY architecture, ensuring smooth toolhead movement and standard dimensional accuracy.
WHEN TO REPLACE THE IDLER: Internal bearings wear out over thousands of hours of printing. You should replace the idler pulley if your 3D printer produces abnormal squeaking, clicking, or grinding noises during diagonal movements, or if the pulley feels rough and gritty when spun manually.
VERSATILE INSTALLATION LOCATIONS: The P2S and X2D models utilize a total of 12 idler pulleys. This 2-pack can be installed in various locations as needed: the front left/right corners, back left/right corners, the XY belt tensioners, or the Y-axis rollers. Replacing them in pairs is highly recommended for balanced tension.
MAINTENANCE & INSTALLATION WARNING: Always disconnect the printer from its power source before disassembly. After installing the new X/Y axis idler pulleys, carefully route the timing belt inside the pulley flanges and ensure the belts are correctly re-tensioned according to the official maintenance wiki to avoid layer shifting.

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