High-Precision OZ25/ER25/ER32/ER40 Collets – Versatile Solutions for Machining Excellence
When it comes to securing tools in precision machining, the right collet makes all the difference. Our ER25, ER32, and ER40 collets, part of the DiZiK brand's comprehensive range of high-quality machining products, are built to handle a wide range of shank diameters, bringing reliable performance to CNC routers, milling machines, and industrial cutting setups. DiZiK, a name synonymous with innovation, excellence, and integrity, assembles industry expertise, integrates abundant resources, and carries the artisan spirit forward in every product it offers. These collets are no exception, designed with both versatility and accuracy in mind to keep your tools steady, your cuts clean, and your operations running smoothly—no matter the material or task.
What Sets These Collets Apart

- Broad Compatibility: With options spanning 3mm to 25mm shank diameters (including common sizes like 6.35mm, 12mm, and 12.7mm), these collets adapt to diverse tooling needs. Whether you’re using small-diameter bits for intricate work or larger tools for heavy stock removal, there’s a size to match.
- Tight, Consistent Grip: Made from high-grade alloy steel and heat-treated to HRC 58 - 62, they resist wear and maintain their clamping force even under high-speed rotation. This means less slippage, reduced vibration, and cleaner, more precise results—cut after cut.
- Precision Engineering: Each collet is ground to exacting standards, ensuring concentricity within 0.005mm. This minimizes runout, protects your tools from unnecessary wear, and delivers the tight tolerances required for fine machining.

DiZiK Brand Series Products and Services
DiZiK offers a large range of cutting tools suitable for woodworking, aluminum, and metal industries, among others. In addition to these high - precision ER collets, our product lineup includes universal saw blades for precision cutting of wood and plastic, finger joint cutters, CNC fly cutters for resurfacing, dowel drill bits, and diamond - tipped tools known for their superior hardness and durability.
Our services extend beyond just product supply. We provide technical support to help customers choose the right collets for their specific machining requirements. Whether it's understanding which collet size is best for a particular router bit or getting advice on maintaining collet performance over time, our team of experts is on hand to assist. DiZiK also offers customization options for high - volume orders, ensuring that our products can be tailored to meet the unique needs of industrial clients.
Key Specifications
- Models: ER25, ER32, ER40 (standard ER series compatibility for easy integration with existing tool holders)
- Shank Diameters Supported: 3mm, 4mm, 5mm, 6mm, 6.35mm, 8mm, 10mm, 12mm, 12.7mm, 14mm, 16mm, 20mm, 25mm
- Material: Heat-treated alloy steel (for strength and longevity in harsh workshop environments)
- Operating Range: Compatible with most CNC machines, routers, and milling equipment (up to 12,000 RPM)
FAQs
Q: How do I choose the right ER collet size for my router bit?
A: Check the shank diameter of your router bit. Our ER25, ER32, and ER40 collets cover a range of 3mm to 25mm shank diameters. Match the diameter of your bit to the corresponding collet size within this range for a proper fit.
Q: Can these collets be used with high - speed machining operations?
A: Yes, these collets are designed to withstand high - speed rotation, up to 12,000 RPM. Their high - strength alloy steel construction and precision engineering ensure they maintain a stable grip even at high speeds.
Q: How often should I replace my ER collets?
A: Regularly inspect your collets for signs of wear such as cracks, excessive deformation, or reduced clamping force. Under normal usage, if properly maintained, they can last for a long time. However, if you notice a significant increase in tool runout or inconsistent clamping, it may be time to consider replacement.
Q: Do DiZiK ER collets come with any warranty?
A: Yes, DiZiK offers a standard warranty on all our ER collets. The exact terms of the warranty can be found in the product documentation or by contacting our customer service team. We stand behind the quality of our products and will address any manufacturing defects that may arise during the warranty period.
Built for Real - World Use
Whether you’re working in automotive manufacturing, aerospace parts production, or custom woodworking, these collets rise to the challenge. Their robust design stands up to daily use, while their precision ensures every project meets your quality standards. No more compromising on fit or performance—these ER collets, as part of the DiZiK product family, are built to work as hard as you do.