An ER collet is a high-precision tool-holding device used in CNC, milling, drilling, and grinding machines. Manufactured from hardened and ground 65Mn spring steel and compliant with DIN 6499 / ISO 15488 standards, it offers excellent concentricity, strong gripping force, and a wide clamping range for accurate and reliable machining.
An ER collet is a high-precision tool holding device used in CNC machines, milling machines, drilling machines, and grinding machines.
It provides excellent concentricity, strong gripping force, and wide clamping range.
Standard: DIN 6499 / ISO 15488
Material: Spring Steel 65 Mn (Hardened & Ground)
🔹 Key Features
• High gripping accuracy (≤ 0.005 mm)
• Wide clamping range (1 mm per collet)
• Suitable for round, hex, square tools
• Long service life with proper heat treatment
• Interchangeable with all standard ER chucks
ER COLLET DIMENSION TABLE (ER8 to ER50)
|
ER Collet |
Length (L) |
Diameter D1 |
Clamping Range |
|
ER-8 |
13mm (0.51") |
8.5mm (0.33") |
0.5 – 5mm (0.020—0.276") |
|
ER-11 |
18mm (0.71") |
11.5mm (0.45") |
0.5 – 7mm (0.020—0.276") |
|
ER-16 |
27.5mm (1.08") |
17mm (0.67") |
1 – 9mm (0.020—0.354") |
|
ER-20 |
31.5mm (1.24") |
21mm (0.83") |
1 – 13mm (0.039—0.512") |
|
ER-25 |
34mm (1.34") |
26mm (1.02") |
1 – 16mm (0.039—0.630") |
|
ER-32 |
40mm (1.57" |
33mm (1.30") |
1 – 21mm (0.039—0.827") |
|
ER-40 |
46mm (1.81") |
41mm (1.61") |
3 – 26mm (0.118—1.024") |
|
ER-50 |
60MM (2.36”) |
52MM (2.05”) |
5 – 34mm |
Each ER collet clamps within 1 mm of its nominal size.
Applications
Supply Options
What is an ER collet?
What is an ER collet used for?
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What sizes of ER collets are available and how do I choose the right one?
Why choose Asmita Industries for ER collets?
Have questions about a specific product? Our team will help you find the right option for your needs — ensuring compatibility, quality, and value.
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