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When your project demands consistent return force and dimensional accuracy, undersized or mismatched compression springs cause costly failures. Engineers, makers, and DIY builders working on CNC machines, robotics, automation fixtures, and mechanical assemblies need coiled springs they can trust to perform cycle after cycle. These 80mm long compression springs are engineered to deliver repeatable load characteristics across a wide range of diameters and wire gauges.
Each spring is 80mm (approximately 3.15 inches) in free length, with outer diameters ranging from 12mm to 80mm (roughly 0.47 in to 3.15 in) and wire diameters from 2mm to 5mm (0.08 in to 0.20 in). Available in stainless steel, spring steel, and nickel-plated spring steel to suit different load, corrosion, and aesthetic requirements.
These 80mm coiled compression springs are well suited for CNC router Z-axis return mechanisms, robotic gripper tension control, industrial jig and fixture clamping, 3D printer bed leveling assemblies, and general-purpose mechanical DIY compression spring replacement projects.
Outer diameters from 12mm to 80mm and wire diameters from 2mm to 5mm let you match the exact spring rate and fit your application demands.
Choose stainless steel for corrosion resistance, spring steel for high-cycle fatigue strength, or nickel-plated spring steel for a clean finish with added surface protection.
Uniform 80mm (3.15 in) free length across all variants ensures predictable deflection and load calculations for your engineering designs.
Closed coil ends provide stable seating on flat spring pockets and guide rods, reducing lateral buckling and improving load alignment.
Available in packs of 1, 2, 4, or 5 pieces per order so you can stock exactly what your project or production run requires.
Designed for CNC machines, 3D printers, robotics, automation fixtures, jigs, and general mechanical DIY compression spring replacement tasks.
| Free Length | 80 mm (3.15 in) |
|---|---|
| Outer Diameter | 12 mm – 80 mm (0.47 in – 3.15 in) — See variant options |
| Wire Diameter | 2 mm – 5 mm (0.08 in – 0.20 in) — See variant options |
| Material | Stainless Steel / Spring Steel / Nickel Plated Spring Steel — See variant options |
| End Type | Closed coil ends |
| Spring Type | Compression (coiled) |
| Quantity per Pack | 1 / 2 / 4 / 5 pcs — See variant options |
| Spring Rate | See variant options |
| Surface Finish | Natural / Nickel Plated — See variant options |
Measure the inner diameter of your spring pocket or the outer diameter of your guide rod. The spring's outer diameter should fit inside the pocket with a small clearance (typically 0.5–1mm), or the inner diameter of the spring should clear the guide rod by a similar margin. Select the variant whose outer diameter matches your housing or rod specification.
Spring steel offers higher tensile strength and is well suited for high-cycle applications where maximum fatigue life is the priority. Stainless steel provides superior corrosion resistance, making it the better choice for humid, wet, or chemically exposed environments. Nickel-plated spring steel sits between the two, offering a clean surface finish with moderate corrosion protection.
For outdoor or high-humidity environments, we recommend the stainless steel variants, which resist rust and oxidation. Spring steel variants are best used in dry, indoor settings. Nickel-plated variants offer some surface protection but are not intended for prolonged exposure to moisture or corrosive chemicals.
Yes. These 80mm compression springs are commonly used in CNC router Z-axis return mechanisms, 3D printer bed leveling systems, and automation fixtures. Select the wire diameter and outer diameter that match your machine's spring seat dimensions and required load rating.
A thicker wire diameter produces a stiffer spring with a higher spring rate, meaning more force is required to compress it a given distance. A thinner wire diameter yields a softer spring. If you know your required load (in Newtons or kg-force) and desired deflection, use a spring rate calculator with the outer diameter and wire diameter to verify the match. Contact us if you need guidance selecting the right combination.
Depending on the variant, packs of 1, 2, 4, or 5 pieces are available. For prototyping or single-unit repairs, a 1 or 2-piece pack is sufficient. For production runs, jig sets, or stocking spares, the 5-piece pack offers better value per unit. Select the quantity option that matches your project needs.
The free length of all variants in this listing is 80mm (3.15 inches) — this is the uncompressed, resting length. Under load, the spring compresses and the working length decreases. Design your assembly to accommodate the compressed length at maximum deflection, ensuring the spring does not reach solid height (coil bind) during normal operation.
