What are the Standard ER Collet Dimensions?

## What are the Standard ER Collet Dimensions?

1. What is the diameter range of ER collets?

2. How are ER collets classified?

3. What is the length of ER collets?

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### 1. What is the diameter range of ER collets?

ER collets typically have a diameter range starting from 1mm and going up to 26mm. The specific size of the collet corresponds to the size of the tool or workpiece that it is designed to hold.

### 2. How are ER collets classified?

ER collets are classified based on their size range and are labeled with a specific ER number. The most common ER collets used in machining are from the ER16, ER20, ER32, and ER40 series. Each series has a different diameter range to accommodate various tools and applications.

### 3. What is the length of ER collets?

ER collets have a standard length that varies depending on the size of the collet. The overall length of an ER collet is typically around 32mm to 56mm. This length includes both the gripping portion of the collet and the shank that fits into the collet holder.

In summary, ER collets have a diameter range from 1mm to 26mm and are classified by specific ER numbers such as ER16, ER20, ER32, and ER40. The length of ER collets ranges from 32mm to 56mm, including the gripping portion and shank. These standard dimensions allow machinists to easily select and interchange ER collets for different tools and applications.

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