High Precision BT-ER Collet Chuck – CNC Tool Holder, Spring Type, ER16–ER40




Specification
Thank you for your interest in our collet chuck. The collet chuck with standard metric pull stud threads—M12 for BT30, M16 for BT40, and M24 for BT50—in accordance with JIS B 6339, and compatible with ER collets ranging from ER16 to ER50.
Any further info. Feel free to contact us.

Model | D | L1 | D1 | Oder No. |
BT30×ER16-70 | 28 | 70 | 31.75 | 760-0028 |
BT30×ER20-70 | 34 | 70 | 31.75 | 760-0029 |
BT30×ER25-70 | 42 | 70 | 31.75 | 760-0030 |
BT30×ER32-70 | 50 | 70 | 31.75 | 760-0031 |
BT30×ER40-80 | 63 | 80 | 31.75 | 760-0032 |
BT40×ER16-70 | 28 | 70 | 44.45 | 760-0033 |
BT40×ER20-70 | 34 | 70 | 44.45 | 760-0034 |
BT40×ER20-100 | 34 | 100 | 44.45 | 760-0035 |
BT40×ER20-150 | 34 | 150 | 44.45 | 760-0036 |
BT40×ER25-60 | 42 | 60 | 44.45 | 760-0037 |
BT40×ER25-70 | 42 | 70 | 44.45 | 760-0038 |
BT40×ER25-90 | 42 | 90 | 44.45 | 760-0039 |
BT40×ER25-100 | 42 | 100 | 44.45 | 760-0040 |
BT40×ER25-150 | 42 | 150 | 44.45 | 760-0041 |
BT40×ER32-70 | 50 | 70 | 44.45 | 760-0042 |
BT40×ER32-100 | 50 | 100 | 44.45 | 760-0043 |
BT40×ER32-150 | 50 | 150 | 44.45 | 760-0044 |
BT40×ER40-70 | 63 | 70 | 44.45 | 760-0045 |
BT40×ER40-80 | 63 | 80 | 44.45 | 760-0046 |
BT40×ER40-120 | 63 | 120 | 44.45 | 760-0047 |
BT40×ER40-150 | 63 | 150 | 44.45 | 760-0048 |
BT50×ER16-70 | 28 | 70 | 69.85 | 760-0049 |
BT50×ER16-90 | 28 | 90 | 69.85 | 760-0050 |
BT50×ER16-135 | 28 | 135 | 69.85 | 760-0051 |
BT50×ER20-70 | 34 | 70 | 69.85 | 760-0052 |
BT50×ER20-90 | 34 | 90 | 69.85 | 760-0053 |
BT50×ER20-135 | 34 | 135 | 69.85 | 760-0054 |
BT50×ER20-150 | 34 | 150 | 69.85 | 760-0055 |
BT50×ER20-165 | 34 | 165 | 69.85 | 760-0056 |
BT50×ER25-70 | 42 | 70 | 69.85 | 760-0057 |
BT50×ER25-135 | 42 | 135 | 69.85 | 760-0058 |
BT50×ER25-165 | 42 | 165 | 69.85 | 760-0059 |
BT50×ER32-70 | 50 | 70 | 69.85 | 760-0060 |
BT50×ER32-80 | 50 | 80 | 69.85 | 760-0061 |
BT50×ER32-100 | 50 | 100 | 69.85 | 760-0062 |
BT50×ER32-120 | 50 | 120 | 69.85 | 760-0063 |
BT50×ER40-80 | 63 | 80 | 69.85 | 760-0064 |
BT50×ER40-100 | 63 | 100 | 69.85 | 760-0065 |
BT50×ER40-120 | 63 | 120 | 69.85 | 760-0066 |
BT50×ER40-135 | 63 | 135 | 69.85 | 760-0067 |
BT50×ER50-90 | 78 | 90 | 69.85 | 760-0068 |
BT50×ER50-120 | 78 | 120 | 69.85 | 760-0069 |
Application
Functions For BT-ER Collet Chucks:
BT-ER collet chucks are used to hold cutting tools through ER collets. They offer high concentricity, strong clamping force, and are suitable for milling, drilling, tapping, and reaming on CNC machining centers.
Usage and Precautions For BT-ER Collet Chucks:
● Choose the correct ER collet based on tool shank diameter.
● Insert the collet into the nut, aligning the groove properly.
● Place the tool into the collet and screw the nut onto the holder.
● Tighten the nut using the proper wrench and torque.
● Mount the holder to the machine spindle for operation.
Usage and Precautions For BT-ER Collet Chucks:
● Keep all contact surfaces clean before assembly.
● Do not overtighten to avoid damaging the collet or tool.
● Use only tools within the clamping range of the selected collet.
● Inspect the taper and bore regularly for wear.
● Store in a clean, dry place to prevent rust.
Advantage
Efficient and Reliable Service
Wayleading Tools, your one-stop supplier for cutting tools, machinery accessories, measuring tools. As an integrated industrial powerhouse, we take immense pride in our Efficient and Reliable Service, tailored to meet the diverse needs of our esteemed clientele. Click Here For More
Good Quality
At Wayleading Tools, our commitment to Good Quality sets us apart as a formidable force in the industry. As an integrated powerhouse, we offer a diverse range of cutting-edge industrial solutions, providing you with the finest cutting tools, precise measuring instruments, and reliable machine tool accessories.Click Here For More
Competitive Pricing
Welcome to Wayleading Tools, your one-stop supplier for cutting tools, measuring tools, machinery accessories. We take immense pride in offering Competitive Pricing as one of our core advantages. Click Here For More
OEM, ODM, OBM
At Wayleading Tools, we take pride in offering comprehensive OEM (Original Equipment Manufacturer), ODM (Original Design Manufacturer), and OBM (Own Brand Manufacturer) services, catering to your unique needs and ideas.Click Here For More
Extensive Variety
Welcome to Wayleading Tools, your all-in-one destination for cutting-edge industrial solutions, where we specialize in cutting tools, measuring instruments, and machine tool accessories. Our core advantage lies in offering an Extensive Variety of products, tailored to meet the diverse needs of our esteemed clientele.Click Here For More
Matching Items

Matched Chuck: ER Collet (Click Here)
Matched Drill Bit: Metric HSS Twist Drill (Click Here) Inch Carbide Drill Bit (Click Here) Metric Carbide Drill Bit (Click Here)
Matched Milling Cutter: HSS END MILL (Click Here) Indexble End Mill (Click Here)
Solution
Technical Support:
We are delighted to be your solution provider for BT-ER Collet chucks. We are happy to offer you technical support. Whether it's during your sales process or your customers' usage, upon receiving your technical inquiries, we will promptly address your questions. We promise to reply within 24 hours at the latest, providing you with technical solutions.
Customized Services:
We are pleased to offer you customized services for BT-ER Collet chucks. We can provide OEM services, manufacturing products according to your drawings; OBM services, branding our products with your logo; and ODM services, adapting our products according to your design requirements. Whatever customized service you require, we promise to provide you with professional customization solutions.
Training Services:
Whether you are the purchaser of our products or an end-user, we are more than happy to provide training service to ensure you use the products you purchased from us correctly. Our training materials come in electronic documents, videos, and online meetings, allowing you to choose the most convenient option. From your request for training to our provision of training solutions, we promise to complete the entire process within 3 days
After-sales Service:
Our products come with a 6-month after-sales service period. During this period, any problems not intentionally caused will be replaced or repaired free of charge. We provide round-the-clock customer service support, handling any usage queries or complaints, ensuring you have a pleasant purchasing experience.
Solution Design:
By providing your machining product blueprints (or assisting in creating 3D drawings if unavailable), material specifications, and mechanical details used, our product team will tailor the most suitable recommendations for cutting tools, mechanical accessories, and measuring instruments, and design comprehensive machining solutions for you.
Packing
Packaged in a plastic box via heat shrink bag. Then packed in an outer box. It can be well prevented from rusting.
Also customized packing is welcomed.

Please contact us for further information. To assist you more effectively, Kindly provide the following details:
● Specific product models and the approximate quantities you require.
● Do you require OEM, OBM, ODM or neutral packing for your products?
● Your company name and contact information for prompt and accurate feedback.
Additional, we invite you to request samples for quality testing.