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Twenty silver carbon-steel compression springs, 7.5 mm outer diameter, 20 mm free height

Unique-Bargains

Unique-Bargains 3D Printer Bed Springs 7.5 x 20 mm 20pcs

SKU CH-7CMW-9DAHA

Set of 20 carbon-steel compression springs measuring 7.5 mm outer diameter and 20 mm free height for 3D printer bed levelling

  • Carbon steel gives stronger support than ordinary steel for stable bed levelling
  • 20 mm free height suits standard printer bed designs
  • 5 mm outer diameter fits common mounting points
  • 2 mm wire diameter provides consistent compression force
  • Pack of 20 springs covers multiple printer upgrades or spares

Bed level springs for 3D printers

These carbon-steel compression springs replace worn or missing bed-level hardware on most 3D printers. Each spring measures 7.5 mm outer diameter, 5 mm inner diameter and 20 mm free height with a 1.2 mm wire. The pack contains twenty pieces for full bed upgrades or spares.

Heat and wear resistance

Carbon steel construction gives higher elasticity and surface hardness than ordinary steel, so the springs keep their force through repeated heating cycles. They suit 3.5 mm aluminium bed plates or thicker without permanent set or fatigue during normal printing temperatures.

Outer diameter 7.5 mm decides fit

The 7.5 mm outer diameter must clear your bed mounting holes and levelling knobs; if the holes are smaller the springs will not seat. Buyers with tighter hole spacing or proprietary spring seats need a different diameter.

Highlights

  • Carbon steel gives stronger support than ordinary steel for stable bed levelling
  • 20 mm free height suits standard printer bed designs
  • 5 mm outer diameter fits common mounting points
  • 2 mm wire diameter provides consistent compression force
  • Pack of 20 springs covers multiple printer upgrades or spares

Specifications

BrandUnique Bargains

Questions about this item

How do I fit the 7.5 mm outer-diameter springs onto the bed leveling screws?

Slide each spring over the screw so the 5 mm inner diameter seats on the shaft, then compress to the 20 mm free height while tightening the knobs evenly.

When should I replace the carbon-steel bed springs?

Replace them when they no longer return to the full 20 mm free height or show visible coil deformation after repeated heating cycles.

What bed thickness works with the 20 mm free-height springs?

The supplier recommends a 3.5 mm or thicker aluminium bed plate so the springs retain enough compression range for leveling.

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