Ender 3 X-axis Belt Tensioner Upgrade 2020 Belt Stretch Straighten Tensioner

Description Specification Reviews Ender 3 X-axis Belt Tensioner Upgrade 2020 Belt Stretch Straighten Tensioner Description: This type of upgrade for the X-axis belt is often called a “2020 profile X-axis synchronous belt stretch/straighten tensioner”. It replaces or augments the stock tensioner assembly mounted on the 2020 aluminium extrusion on the X-axis. Its aims are: Allowing fine adjustment of the belt tension via a screw/knob rather than relying on the fixed stock bracket. Ensuring the belt runs straight and true, reducing side-to-side movement or slipping of the belt on the pulley/rail. Mitigating belt stretch or loosening over time by making re-tensioning easier. Using a sturdier material (aluminium alloy or steel) for better durability compared to cheap plastic stock parts. For example, one listing says: “Adjustable X-axis Timing Belt Straighten Tensioner, very easy to adjust the belt tension. Material: Aluminium Alloy … Fit on 2020 Aluminium Profile. Great upgrade for Ender 3 / Ender 3 Pro / Ender 5 / CR10 / CR10S. Features: Material: Many are made of aluminium alloy (anodised finish) or in some cases SPCC steel. Compatibility: Designed for 2020 aluminium profile used on the X-axis of Ender 3 / Ender 3 Pro / Ender 3 V2 etc. Some kits include a 2040 profile variant for the Y-axis as a bundle. Adjustability: The tensioner allows you to adjust the belt tension (by turning a knob/screw) and sometimes the belt length (via sliding bracket, within limits). Example: “Adjustable Distance: 8mm; Adjustable Belt Length limit: 16mm. Pre-assembled or minimal assembly: Many kits come “already assembled” so you just uninstall the old bracket and mount the new one. Improved print quality: By keeping the belt properly tensioned and aligned you get smoother motion, less belt flutter/sag, better dimensional accuracy. One seller says “Easier to adjust the belt, with higher precise and better printing effect. Specification: Fit for: Ender 3 / Ender 3 Pro / CR-10 / CR-10 S etc. (X-axis 2020 profile) Material: Aluminium alloy, surface anodised. Adjustable distance (bracket movement): ~8 mm for X-axis. Adjustable belt length limit: ~16 mm (again from one listing) Belt width compatibility: 6 mm belt Colour: black anodised. Dimensions / size: ~11.5 × 7.6 × 2.0 cm; Weight: ~68 g.# Package Includes: 1 x belt tensioner kit SKU: CNC-334 Categories: 3D Printer Parts, CNC & 3D Printers Tags: 3D printer, 3d printers, Ball Bearing, bearing, Bracket, CNC, end stop limit switch, end-stop, extruder bracket, extruder kit, feed, feed device, Heatbed, left side extruder, left side metal extruder, metal extruder, pcb, reprap, stepper kit