2.Power clamping ability, precise accuracy
3.Used for boring, milling, drilling, tapping, grinding and e engraving operation etc..
4. Inspection:100% collet inspection.







Technical specification
Model No. | dH7 | D | D1 | D2 | L | L1 | L2 | L3 | Callapsible capacity |
ER8 | ≥1.0-5.0 | 8 | 8.45 | 6.5 | 13.5 | 2.98 | 1.5 | 1.2 | 0.5 |
ER11 | >1.0-7.0 | 11 | 11.5 | 9.5 | 18.0 | 3.8 | 2.5 | 2.0 | 0.5 |
ER16 | ≥1.0-2.5 | 16 | 17 | 13.8 | 27.5 | 6.26 | 4.0 | 2.7 | 0.5 |
>2.5-10.0 | 16 | 17 | 13.8 | 27.5 | 6.26 | 4.0 | 2.7 | 1.0 | |
ER20 | ≥1.0-2.5 | 20 | 21 | 17.4 | 31.5 | 6.36 | 4.8 | 2.8 | 0.5 |
>2.5-13.0 | 20 | 21 | 17.4 | 31.5 | 6.36 | 4.8 | 2.8 | 1.0 | |
ER25 | ≥1.0-2.5 | 25 | 26 | 22.0 | 34.0 | 6.66 | 5.0 | 3.1 | 0.5 |
>2.5-16.0 | 25 | 26 | 22.0 | 34.0 | 6.66 | 5.0 | 3.1 | 1.0 | |
ER32 | ≥2.0-2.5 | 32 | 33 | 29.2 | 40.0 | 7.16 | 5.5 | 3.6 | 0.5 |
>2.5-20.0 | 32 | 33 | 29.2 | 40.0 | 7.16 | 5.5 | 3.6 | 1.0 | |
ER40 | ≥3.0-26.0 | 40 | 41 | 36.2 | 46.0 | 7.66 | 7.0 | 4.1 | 1.0 |
ER50 | ≥6.0-10.0 | 50 | 52 | 46.0 | 60.0 | 12.6 | 8.5 | 5.5 | 1.0 |
>10.0-34.0 | 50 | 52 | 46.0 | 60.0 | 12.6 | 8.5 | 5.5 | 1.2 |
Assembling Collet
Insert groove of collet into eccentric ring of the clamping nut at the mark on the bottom of the nut. Push collet in the direction of the arrow until it clicks in place. Screw nut with collet onto toolholder. We recommend tightening the nut with a torque wrench.
Disassembling Collet
After the nut is unscrewed from the toolholder, press on the face of the collet while simultaneously pushing sideways on the back of the collet opposite the mark until it disengages from the clamping nut.
Production process

Packaging & Shipping
1. Spring Drilling ER Collect ER40 Collect Set ER40 Collect are sealed by film to keep original accuracy which aims at guarantee
achieving customers' requirement.
2. Single product is packed by plastic box that make it safe.
3. Bulk products are packed by carbon box to ensure reach transportation requirement.
Our Service
1. Guarantee quality which mainly embodied in real accuracy.
2. Huge production capacity to ensure in time delivery
3. Manufacture that can accept OEM service.
4. Professional sales team and engineers.
5. Sufficient experience in domestic and international sales
6. Prompt reply which response in 15 minutes
7. Never stop in innovating and improving.


Delivering and packaging
Paper box or Plastic box/PCS, or as customer's requirement
About 7-20 days
Company Information
YUCHENG GERZHUO MECHATRONICS TECHNOLOGY CO., LTD is a competitive private enterprise engaged in production of machine tool parts. Machine tool parts includes varied of series, and full range specification, specialized in advantage of DIN6499B Standard High Precision 0.015mm-0.005mm ER8 ER11 ER16 ER20 ER25 ER32 ER40 Collet ER Collet, tool holders and accessories. We have established long-term friendly cooperation relationships with numerous customers all over the world as following: USA, Sweden, Russia, Spain, France, Italy, Britain, Germany, South-east countries, Latin America countries, Africa countries and so on.
We guarantee the security and quality of our product by optimized and centralized product selections, and have built strong partnerships with well-known companies in the industry in China.
We will keep improving technology and ourselves to lead industry development and create new marketing value. Make made-in-China become created-in-China.
We supply different kinds of products. High quality and favorable price. We're pleased to get your Inquiry and we will reply you as soon as possible. We stick to the principle of " Quality first, service first, continuous improvement and innovation to meet the customers" For the management and " Zero defect, zero complaints" As the quality objective. Principle of " Quality first, service first, continuous improvement and innovation to meet the customers" For the management and " Zero defect, zero complaints" As the quality objective.

Contact information
More information to company, copy the official website link er-collet.en.made-in-china.com for reference.