Unique-Bargains 3D Printer Bed Springs 9 x 22 mm 20pcs

Bed-level springs for 3D printers

These compression springs replace the standard bed-level springs on most 3D printers. The pack contains twenty silver iron springs sized to 9 mm outer diameter and 22 mm free height. They suit hobbyists and small-shop operators who want consistent bed tension without sourcing individual parts. The inner diameter measures 7 mm and the wire diameter is 1 mm.

Simple drop-in replacement

Installation requires loosening the bed knobs, swapping the old springs, and re-levelling the bed. The uniform dimensions mean no filing or shimming is needed for compatible machines. The main issue is forgetting to re-level after the swap, which leaves the first layer too high or too low. Springs that are shorter than 22 mm free height will not provide the same preload.

Stable tension during long prints

Iron construction resists heat creep from a heated bed and keeps its spring rate over many thermal cycles. The 1 mm wire diameter gives enough force to hold a glass or PEI sheet without sagging during multi-hour jobs. Under sustained load the springs do not settle noticeably, so bed level stays consistent from the first layer to the last. They are not suited for printers that require heavier-duty springs or a different free height.