Omega Products ER40 Collet Standard Precision - 10 Micron Run-Out - 4.5mm - 3.5mm

Omega ER40 Collet – Standard Precision with 10 Micron Run-Out Our ER40 collets are engineered for reliable, repeatable clamping of round tool shanks in standard ER40 collet chucks. With a precise 10 micron run-out, they deliver consistent concentricity across your machining projects, so every cut stays within tight tolerances and your finishes stay true. Key features and benefits:

• Exceptional run-out control — 10 µm run-out minimizes eccentricity, enhancing accuracy for milling, drilling, and finishing operations.
• Versatile clamping range — designed to accommodate small-diameter tooling from 3.5 mm to 4.5 mm, enabling a broad set of standard end mills and drills without swapping to multiple collets.
• Reliable compatibility — built to fit standard ER40 collet chucks, ensuring smooth integration with commonly used CNC machines and tooling setups.
• Enhanced tool life and finish — tighter grip and reduced run-out translate to cleaner cuts, improved surface finish, and steadier tool wear progression.
• Ease of use in busy shops — precise seating and repeatable performance promote fast changeovers and consistent results after every tool swap.

Who benefits most: - Small-to-medium shops performing precision milling, engraving, or delicate drilling tasks where run-out can impact tolerance and finish. - Hobbyists upgrading to a more reliable toolholding solution for CNC routers and mills that use ER40 collets. - Any setup where repeatable accuracy across multiple tools matters more than sheer clamping force alone. Why this matters in practical terms: - When your tool shank runs true, you achieve better concentricity between the tool and workpiece. That means fewer alignment adjustments, less corrective passes, and a sharper edge profile right out of the cut. - The 3.5–4.5 mm range covers common small-diameter tooling, reducing the need for frequent collet changes during a project with varied tool sizes. Maintenance tips: - Keep the bore and outer surfaces free from dust and chips; a quick wipe after use helps preserve accuracy. - Inspect run-out with a dial indicator periodically to verify consistent performance. - Store and handle collets with care to maintain true geometries between uses.