A Die Grinder Collet is a precision tool-holding collet used to clamp rotary burrs, mounted points, grinding stones, polishing tools, and carbide burrs in electric or air die grinders.
It ensures secure grip, low runout, and safe high-speed operation.
🔹 KEY FEATURES
- Strong grip at high RPM
- Good concentricity for smooth finishing
- Easy tool change
- Reduced vibration & chatter
- Compatible with most standard die grinders
📐 DIE GRINDER COLLET – STANDARD DIMENSION TABLE
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Collet Size
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Tool Shank Size
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Outer Dia (D) mm
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Length (L) mm
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Common Use
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3 mm
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3 mm
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8 – 10
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18 – 22
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Micro grinding
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|
4 mm
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4 mm
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10 – 12
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20 – 25
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Light finishing
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|
6 mm
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6 mm
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12 – 14
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25 – 30
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Standard die grinding
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|
1/8"
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3.175 mm
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10 – 12
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20 – 25
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Precision tools
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|
1/4"
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6.35 mm
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12 – 14
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25 – 30
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Heavy-duty burrs
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📌 Collet OD & length may vary slightly by die grinder make.
🧩 CONSTRUCTION DETAILS

- Material: Spring Steel /Alloy Steel
- Heat Treatment: Hardened & tempered
- Slots: Precision slits for uniform clamping
- Finish: Ground bore for accuracy
⚙️ TYPES OF DIE GRINDER COLLETS
- Metric collets (3 mm, 6 mm, etc.)
- Inch collets (1/8", 1/4")
- Standard straight collets
- Custom collets (as per grinder spindle)
🏭 APPLICATIONS
- Metal deburring & grinding
- Mold & die finishing
- Weld cleaning
- Automotive & fabrication work
- Jewelry & precision finishing
📦 SUPPLY OPTIONS
- Metric & inch sizes available
- Hardened steel construction
- Custom sizes for specific grinder models
- Bulk & export-quality