Genmitsu ER11 Spring Collet Set 15pcs for CNC Milling & Lathe

Description

Product Overview

The Genmitsu ER11 15‑piece spring collet set is engineered to meet the demanding requirements of modern CNC milling, engraving, and lathe operations. Constructed from formulated spring steel that has been hardened and precision‑ground, each collet delivers a consistent clamping force while maintaining the ultra‑tight tolerance of 0.02 mm (0.0008″). This level of accuracy ensures that tools ranging from 1 mm to 7 mm, as well as 1/4″ and 1/8″ shank sizes, are held securely without slippage, even under high‑speed rotation. The set includes a full range of diameters—1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, plus the 1/4″ and 1/8″ variants—providing comprehensive coverage for most small‑diameter tooling needs.

Each collet is designed with a dual‑spring mechanism that distributes pressure evenly around the tool shank, minimizing deformation and extending the lifespan of both the collet and the tool. The hardened steel composition resists wear and corrosion, making the set suitable for continuous use in workshop environments where dust, coolant, and occasional temperature fluctuations are common. The compact packaging dimensions (4.45 x 2.64 x 1.02 inches) and lightweight design (4.4 ounces) allow for easy storage and quick access during tool changes, reducing downtime and improving overall productivity.

Usage

When installed in a CNC milling or engraving machine, the ER11 collet set provides a reliable interface between the spindle and the cutting tool. Users can quickly swap out collets to match the required tool diameter, enabling rapid prototyping, detailed engraving, and precision machining of small parts. The set is equally effective on hobbyist lathe machines, where the 1/4″ and 1/8″ collets accommodate common mini‑lathe accessories such as drill bits, end mills, and reamers. Because the collets maintain a tight grip, they reduce run‑out and vibration, which translates into smoother surface finishes and tighter tolerances on finished parts.

For educational settings and makerspaces, the ER11 set offers a cost‑effective solution for teaching precision machining concepts. In addition to standard CNC applications, the collets can be used in manual drilling rigs, micro‑machining stations, and even in certain 3‑D printer extruder upgrades where a secure tool holder is essential. The versatility of the set makes it a valuable addition to any tool inventory, whether the user is a seasoned professional, a small‑business owner, or an enthusiastic hobbyist seeking reliable performance.

Why Choose Us

Genmitsu is a recognized brand in the CNC community, known for delivering high‑quality components that balance performance with affordability. This collet set reflects the company’s commitment to precision engineering, offering a level of accuracy typically found in more expensive industrial‑grade tools. Each collet undergoes a rigorous quality‑control process that includes hardness testing, dimensional verification, and surface finish inspection to guarantee consistent performance across the entire set.

Beyond the material advantages, the ER11 set benefits from a user‑centric design philosophy. The collets feature a smooth, rounded exterior that prevents snagging on surrounding components, while the internal geometry is optimized for even pressure distribution. This design reduces the likelihood of tool breakage and helps maintain the integrity of delicate workpieces. Additionally, the set is backed by Genmitsu’s responsive customer support, offering technical assistance, replacement parts, and a satisfaction guarantee that underscores the brand’s confidence in its product.

Choosing the Genmitsu ER11 collet set also means investing in a future‑proof solution. The standardized ER11 interface is widely adopted across a range of CNC machines, ensuring compatibility with current equipment and providing flexibility for future upgrades. As machining technology evolves, the collet set remains a reliable, interchangeable component that can adapt to new tool designs and emerging applications without requiring a complete overhaul of the workholding system.

Key Features

• High‑precision 0.02 mm tolerance ensures accurate tool positioning for fine detail work.
• Hardened spring steel construction delivers long‑lasting durability and resistance to wear.
• Full range of sizes from 1 mm to 7 mm plus 1/4″ and 1/8″ covers most small‑diameter tooling needs.
• Dual‑spring design provides even clamping pressure, reducing vibration and improving surface finish.
• Genmitsu customer support offers technical assistance, replacement parts, and a satisfaction guarantee.

FAQ

What tool sizes are compatible with the ER11 collet set?

The set includes collets for diameters ranging from 1 mm up to 7 mm, as well as 1/4″ and 1/8″ shank sizes, covering the majority of small‑diameter CNC tools and accessories.

Can these collets be used on both CNC machines and manual lathes?

Yes. The ER11 interface is a standard size for many CNC milling, engraving, and hobbyist lathe machines, making the collets versatile for both automated and manual applications.

How does the hardened spring steel improve performance?

Hardened spring steel maintains its elasticity and strength over repeated cycles, providing a consistent clamping force that minimizes tool slippage, reduces wear, and extends the lifespan of both the collet and the tool.

Is there a warranty or support available for this product?

Genmitsu offers a satisfaction guarantee and responsive customer support for technical questions, replacement parts, and warranty claims, ensuring peace of mind for buyers.

What is the accuracy specification of these collets?

Each collet is manufactured to a tolerance of 0.02 mm (0.0008″), delivering high‑precision tool holding that is essential for detailed engraving and fine machining tasks.