Import Good Price Bt-Er Collet Chuck — Buy in Bulk from Supplier in China

The Good Price BT-ER Collet Chuck is a CNC spindle accessory supplied by ADST Precision Accessories Co., Ltd in Shenzhen, China. It carries the model designation BT-ER and conforms to the JIS MAS 403 taper, which has a 7:24 ratio. The body is machined from either 40Cr high-carbon chromium steel or 20CrMnTi alloy steel, providing strength and wear resistance. The chuck is rated for a maximum rotating speed of 25,000 rpm.

Both material grades are commonly used for high-speed tooling, with 40Cr offering good hardness after carburising and 20CrMnTi delivering toughness after conventional heat treatment. The supplied hardness ranges from 44-48 HRC for conventional treatment to 52 HRC for carburised surfaces, matching typical industry expectations for precision collets. Runout is controlled to 0.005 mm, a tolerance that aligns with standard CNC accuracy requirements. The design accommodates pull studs BT30, BT40 and BT50, and a high-speed variant supports BT30 and BT40, with spindle anastomosis angles of 30°, 45° or 90°.

These chucks are intended for manufacturers of CNC machining centres, tool-room integrators and equipment refurbishers who need reliable tool holding. ADST offers customer-specific customization, though minimum order quantities and exact pricing are not disclosed in the listing and should be confirmed directly. Prospective buyers should request detailed trade terms, including incoterms, payment schedule and packaging specifications, before placing an order.

ADST Precision Accessories Co., Ltd is located in Shenzhen, Guangdong Province, China (postal code 518105). The company is listed under the harbour trust tier on the platform, indicating a verified business registration, although its response rate is currently recorded as 0 % with no average response time logged.

The supplier specialises in precision accessories such as collet chucks, offering both standard items and custom-made solutions. The listing states that the company can support customer-specific customization, but it does not disclose production capacity, lead time or pricing details, which must be obtained from the supplier directly.