In the world of machining, Collet Chucks (ER Collet Chucks) are the most widely used and economical tool holding systems for a broad range of operations such as drilling, milling, boring and reaming.
Watch Temak Teknik’s product information video at the link below:
Key Features and Advantages
- High Clamping Force and Full-Circumference Grip: As the nut is tightened, the slotted structure of the collets grips the tool shank uniformly through 360 degrees, providing a strong hold [00:19].
- Wide Product and Diameter Range: ER collet systems range from ER08 through ER11, ER16, ER20, ER25, ER32, ER40 and ER50 [01:05]. As a result, all cutting tools with shank diameters from 0.5 mm to 34 mm can be clamped in a single holder body simply by changing collets [02:14].
- Flexibility with Intermediate/Decimal Diameters: Whereas Weldon or hydraulic chucks can only hold standard whole diameters (e.g. 8 mm, 10 mm), ER collets make it easy to clamp tools with special/decimal shank diameters such as 10.1 mm or 10.5 mm [01:46].
- Economical and Modular: By purchasing a single collet chuck body and changing the collet set inside it, dozens of drills, end mills and reamers of different diameters can be clamped [00:35].
Tolerances to Consider When Selecting Collets
- Standard vs. Precision Collets: Type A (standard) and Type B (precision) collets are available on the market. Their accuracy generally ranges from 0.015 mm to 0.003 mm (3 microns) [01:21].
- Single-Size vs. Clamping-Range Collets: Collets marked with a single size (e.g. just 10) are dedicated to that diameter only and have much lower runout values. Collets marked with a range (e.g. 10-11) offer 1 mm of collapse range, but their runout accuracy is slightly lower than that of single-size collets [01:30].