ER Collet Chuck with UM Nut is a high-precision CNC tool holder designed for securely clamping ER collets in milling, drilling, reaming, boring and tapping applications. Manufactured from premium alloy steel and hardened through advanced heat treatment, this ER collet chuck delivers excellent rigidity, superior concentricity and outstanding vibration resistance for high-speed machining.
The UM nut design provides increased clamping force while reducing vibration and improving tool stability, making it ideal for precision machining centers, CNC milling machines, CNC lathes and high-speed production environments. The ER system is based on the widely adopted DIN 6499 standard, allowing compatibility with standard ER collets across common machine tool platforms.
Product Description
Product Name: ER Collet Chuck with UM Nut
Material: High-quality alloy steel
Hardness: HRC 56-60
Standard: DIN 6499 Compatible
Accuracy: ≤0.003 mm Runout (at 3×D)
Balancing: G2.5 / 25,000 RPM (optional higher-speed balancing available)
Surface Treatment: Precision ground and anti-corrosion coated
Coolant Type: Through Coolant & External Coolant Available
Taper Types:
BT30
BT40
BT50
SK40
SK50
CAT40
CAT50
HSK Series
ER Sizes:
ER16
ER20
ER25
ER32
ER40
ER50
Technical Parameters
|
Size |
D (mm) |
D1 (mm) |
L (mm) |
Capacity (mm) |
|
BT30-ER16UM-70 |
28 |
32 |
70 |
1-10 |
|
BT30-ER20UM-70 |
34 |
35 |
70 |
1-13 |
|
BT30-ER25-70 |
42 |
42 |
70 |
2-16 |
|
BT30-ER32-70 |
40 |
50 |
70 |
3-26 |
|
BT30-ER40-70 |
50 |
63 |
70 |
1-10 |
|
BT30-ER16UM-100 |
28 |
32 |
100 |
1-13 |
|
BT30-ER20UM-100 |
34 |
35 |
100 |
2-16 |
|
BT30-ER25-100 |
42 |
42 |
100 |
2-20 |
|
BT30-ER32-100 |
40 |
50 |
100 |
3-26 |
|
BT40-ER16UM-70 |
28 |
32 |
70 |
1-10 |
|
BT40-ER20UM-70 |
34 |
35 |
70 |
1-13 |
|
BT40-ER25-70 |
42 |
42 |
70 |
2-16 |
|
BT40-ER32-70 |
50 |
50 |
70 |
2-20 |
|
BT40-ER40-80 |
50 |
63 |
80 |
3-26 |
|
BT40-ER16UM-100 |
28 |
32 |
100 |
1-10 |
|
BT40-ER20UM-100 |
34 |
35 |
100 |
1-13 |
|
BT40-ER25-100 |
42 |
42 |
100 |
2-16 |
|
BT40-ER32-100 |
50 |
50 |
100 |
2-20 |
|
BT40-ER40-100 |
50 |
63 |
100 |
3-26 |
|
BT40-ER16UM-160 |
28 |
32 |
160 |
1-10 |
|
BT40-ER20UM-160 |
34 |
35 |
160 |
1-13 |
|
BT40-ER25-160 |
42 |
42 |
160 |
2-16 |
|
BT40-ER32-160 |
50 |
50 |
160 |
2-20 |
|
BT40-ER40-160 |
50 |
63 |
160 |
3-26 |
|
BT40-ER16UM-200 |
28 |
32 |
200 |
1-10 |
|
BT40-ER20UM-200 |
34 |
35 |
200 |
1-13 |
|
BT40-ER25-200 |
42 |
42 |
200 |
2-16 |
|
BT40-ER32-200 |
50 |
50 |
200 |
2-20 |
|
BT40-ER40-200 |
50 |
63 |
200 |
3-26 |
|
BT50-ER16UM-70 |
28 |
32 |
70 |
1-10 |
|
BT50-ER20UM-70 |
34 |
35 |
70 |
1-13 |
|
BT50-ER25-70 |
42 |
42 |
70 |
2-16 |
|
BT50-ER32-70 |
40 |
50 |
70 |
2-20 |
|
BT50-ER40-80 |
63 |
63 |
80 |
3-26 |
|
BT50-ER50-100 |
64 |
78 |
100 |
6-34 |
|
BT50-ER16UM-100 |
28 |
32 |
100 |
1-10 |
|
BT50-ER20UM-100 |
34 |
35 |
100 |
1-13 |
|
BT50-ER25-100 |
42 |
42 |
100 |
2-16 |
|
BT50-ER32-100 |
50 |
50 |
100 |
2-20 |
|
BT50-ER40-100 |
63 |
63 |
100 |
3-26 |
|
BT50-ER16UM-160 |
28 |
32 |
160 |
1-10 |
|
BT50-ER20UM-160 |
34 |
35 |
160 |
1-13 |
|
BT50-ER25-160 |
42 |
42 |
160 |
2-16 |
|
BT50-ER32-160 |
50 |
50 |
160 |
2-20 |
|
BT50-ER40-160 |
63 |
63 |
160 |
3-26 |
|
BT50-ER16UM-200 |
28 |
32 |
200 |
1-10 |
|
BT50-ER20UM-200 |
34 |
35 |
200 |
1-13 |
|
BT50-ER25-200 |
42 |
42 |
200 |
2-16 |
|
BT50-ER32-200 |
50 |
50 |
200 |
2-20 |
|
BT50-ER40-200 |
63 |
63 |
200 |
3-26 |
|
BT50-ER25-250 |
42 |
42 |
250 |
2-16 |
|
BT50-ER32-250 |
50 |
50 |
250 |
2-20 |
|
BT50-ER40-250 |
63 |
63 |
250 |
3-26 |
|
BT50-ER25-300 |
42 |
42 |
300 |
2-16 |
|
BT50-ER32-300 |
50 |
50 |
300 |
2-20 |
|
BT50-ER40-300 |
63 |
63 |
300 |
3-26 |
|
BT60-ER32-100 |
50 |
50 |
100 |
2-20 |
|
BT60-ER40-100 |
63 |
63 |
100 |
3-26 |
|
BT60-ER50-100 |
64 |
78 |
100 |
6-34 |
|
BT60-ER32-160 |
50 |
50 |
160 |
2-20 |
|
BT60-ER40-160 |
63 |
63 |
160 |
3-26 |
|
BT60-ER50-160 |
64 |
78 |
160 |
6-34 |
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