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ER Collets

DIC is Exporter of Collets in India, used to form a collar around a tool or device, with a pointed outer surface and a tube-shaped inner surface. Collet is a cylindrical sleeve classified as a subtype of the chuck. Basically, collets can be divided into two categories: Internal & External collets. These are also used to secure cutting tools and workpieces at high speeds and pressures. It is suitable for the repeated production of high-precision components and products. Collets are available in two types: Workholding, Toolholding. These are only used with cylindrical shaft tools, such as endmills, drills, thread mills, taps, etc.

Technical Specification
Material High-grade spring steel
ER Collets Types ER-8, ER-11, ER-16, ER-20, ER-25, ER-32, ER-40, ER-50
Holder Compatibility ER chuck / spindle taper
Tool Shank Type Straight shank
Vibration Resistance High
Repeatability Very high
ER Collet Length (L) Diameter D1 Clamping Range
ER-8 13mm 8.5mm 0.5 – 5mm
ER-11 18mm 11.5mm 0.5 – 7mm
ER-16 27.5mm 17mm 1 – 9mm
ER-20 31.5mm 21mm 1 – 13mm
ER-25 34mm 26mm 1 – 16mm
ER-32 40mm 33mm 1 – 21mm
ER-40 46mm 41mm 3 – 26mm
ER-50 60MM 52MM 5 – 34mm
Precision Holding for Consistent Machining Performance
  • High-Accuracy Tool Clamping
    Collets are engineered to deliver precise tool gripping with uniform pressure distribution, ensuring stable tool holding during machining operations, reduced runout, improved concentricity, and consistent cutting accuracy across high-speed and heavy-duty machining environments.
  • Optimized Grip Range Design
    DIC provide collets designed with an optimal clamping range that allows secure holding of tools with minimal size variation, ensuring flexibility in tool usage while maintaining strong grip force and reliable tool stability during precision machining processes.
  • Low Runout Performance
    Precision-ground internal and external surfaces in collets help achieve minimal runout, which enhances surface finish quality, extends cutting tool life, reduces tool vibration, and supports high-precision milling, drilling, and engraving applications.
  • Efficient Chip and Coolant Flow
    These are designed to support smooth chip evacuation and efficient coolant passage, reducing heat buildup during cutting, preventing tool slippage, and ensuring consistent machining performance in both dry and coolant-assisted operations.
  • Wide Compatibility Across Tool Holders
    These collets are compatible with various standard tool holders, enabling seamless integration into existing machining setups while supporting diverse cutting tools, spindle systems, and CNC machining centers used in industrial manufacturing.
  • Long-Term Dimensional Stability
    Collets are engineered to retain their shape and clamping efficiency over extended usage cycles, minimizing deformation, maintaining consistent gripping force, and ensuring long-term reliability even under repeated tool changes and continuous production conditions.
Reliable Clamping Solutions Backed by Engineering Expertise
  • Proven Machining Reliability
    Our collets are designed to deliver dependable tool holding performance, ensuring stable machining results, reduced tool failure, improved surface finish, and consistent productivity across high-precision and heavy-duty industrial machining applications.
  • Strict Quality Control Standards
    Every collet undergoes multiple inspection stages including dimensional checks, surface finish verification, and clamping accuracy evaluation to ensure consistent quality, performance reliability, and adherence to international machining standards.
  • Industry-Wide Application Support
    Collets supplied by us are suitable for automotive, aerospace, general engineering, die-mold manufacturing, and industrial production environments, providing flexible solutions for varied machining needs and tool holding requirements.
  • Consistent Performance with DIC Tools
    With DIC Tools, collets are developed using proven manufacturing expertise and process validation methods, ensuring reliable clamping strength, long service life, and consistent machining accuracy for professional and industrial users.
  • Extended Tool Life Advantage
    By maintaining uniform gripping pressure, collets help reduce uneven tool stress, prevent slippage, minimize vibration, and significantly extend the operational life of cutting tools during repetitive machining cycles.
  • Cost-Effective Machining Solution
    Our collets from Dedicated Impex Co. offer a balanced combination of durability, precision, and performance, helping manufacturers reduce tooling costs, minimize downtime, and improve overall machining efficiency without compromising on quality or reliability.
Tailored Tool Holding Solutions That Reflect Your Brand Identity
  • Custom Brand Identity Integration
    Collets can be supplied with customized branding options that reflect your company identity, enabling seamless alignment with your product portfolio while maintaining consistent quality, performance, and professional industrial presentation.
  • Private Label Packaging Solutions
    We offer collets with private label packaging designed to meet distributor and reseller requirements, ensuring strong brand visibility, organized presentation, and secure packaging suitable for long-distance handling and storage.
  • Customized Size and Specification Support
    OEM collets can be manufactured based on specific dimensional tolerances, clamping ranges, and application requirements, helping customers deliver specialized tool holding solutions tailored to their machining systems.
  • Brand-Focused Product Marking
    Collets can feature laser marking or customized identification details, enabling clear product traceability, brand recognition, and easy differentiation across various tool sizes and industrial applications for efficient inventory control and management.
  • Flexible Packaging Design Options
    Custom packaging for collets includes protective inserts, branded labels, and durable cartons designed to enhance product safety, improve shelf presentation, and support efficient inventory management for distributors and industrial buyers.
  • Confidential and Buyer-Focused Solutions
    Our OEM and custom branding services for collets prioritize buyer confidentiality, design flexibility, and long-term partnership support, helping brands expand their market presence with dependable and professionally branded tool holding products.

Product FAQ's

1. What is an ER Collet and how does it work?

ER collets are precision tool-holding components designed to grip cutting tools securely and evenly through a slotted cylindrical structure, tightening inside an ER nut and holder to deliver high concentricity, strong clamping force, and vibration-free machining performance.

2. Which industries commonly use ER Collets?

ER collets are widely used across automotive, aerospace, die and mold, and general engineering industries, supporting CNC milling, drilling, and grinding operations while being a reliable choice for precision machining workshops and high-speed industrial applications.

3. What materials are ER Collets made from?

ER Collets are manufactured with high-strength construction and controlled flexibility, enhanced through heat treatment for improved hardness and elastic performance, while precision grinding ensures accurate concentricity, secure tool holding, and protective surface treatments extend durability and service life.

4. How much load can an ER Collet handle?

ER collet load capacity depends on size and tightening torque, with larger collets handling higher cutting forces, while proper installation ensures safe load distribution and following manufacturer torque guidelines is essential for reliable and secure operation.

5. Are ER Collets suitable for high-speed machining?

Yes, ER collets are designed for high-speed CNC operations, featuring a balanced design that minimizes vibration at high RPM, precision manufacturing that ensures stability and safety, and wide use in high-speed milling applications.

6. Can ER Collets be customized?

Dedicated Impex offers ER collets that can be customized for special diameters, tolerances, coatings, and sealing options, including non-standard designs developed to support specific applications and precise machining requirements.

7. Are ER Collets suitable for export markets?

Yes, ER collets are widely supplied for global CNC applications, meeting international quality and packaging standards, supported by export-grade inspection processes and proper documentation to ensure reliable international supply chains.

8. What maintenance is required for ER Collets?

Regular cleaning removes chips and coolant residue, periodic inspection helps identify wear or deformation, avoiding over-tightening prevents damage, and proper routine maintenance significantly extends ER collet service life and machining reliability.

9. What quality checks are performed on ER Collets?

DIC Tools follows strict quality checks including hardness testing and runout inspection, dimensional accuracy verification using precision gauges, continuous monitoring of heat treatment consistency, and final inspection to ensure reliable machining performance.

10. How does ER Collet structure improve accuracy?

The slotted design provides uniform radial pressure for consistent clamping, precisely centers the tool during operation, reduces vibration to improve surface finish, and maintains structural symmetry to ensure repeatable accuracy and stable machining results.

Need Additional Support?

If you didn’t find the information you’re looking for, please connect with our DIC Tools specialists for expert assistance. Our team is ready to support you with product selection, technical guidance, and export inquiries.
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