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Er Collet for CNC Machine Tool
ER collets for CNC machine tools are precision spring collets engineered for tool holding in milling, drilling, and grinding applications. This supplier's product line includes sizes ER8 through ER50, with a verified runout of 0.0003 inches (0.0076mm) on selected units. The collets are manufactured using CNC internal grinding and undergo cryogenic treatment to enhance dimensional stability. The product is marketed for industrial use where repeatability and tool life are critical.
The collets are made from heat-treated spring steel with a quenching and tempering process followed by ultra-low temperature cryogenic treatment at -384.8°F (-196°C). This treatment reduces retained austenite and increases martensite formation, improving hardness and wear resistance. The inner bore is ground to a finish of Ra < 0.4 μm, and the outer surface is polished to reduce friction in the chuck. These features align with standard practices for high-precision collets in European and Japanese manufacturing.
These collets are purchased by CNC machining shops, tool and die makers, and automotive suppliers requiring consistent tool performance. Buyers typically order multiple sizes to maintain tooling inventory. Packaging is in plastic boxes with carton outer packaging. Delivery for samples is within seven days, and bulk production requires 35 days. Trade terms are FOB Qufu port, and payment is usually via T/T. Buyers should specify the required accuracy grade and confirm compatibility with their machine's ER chuck.
| Collet Series | ER8, ER11, ER16, ER20, ER25, ER32, ER40, ER50 |
| Material | Heat-treated spring steel (quenching and tempering grade) |
| Runout Accuracy | 0.0003 inch (0.0076mm) for highest grade, 0.005mm and 0.008mm for standard grades |
| Clamping Range (ER11) | 0.116 inch to 0.156 inch (3.0mm to 4.0mm) |
| Overall Length (ER11) | 0.708 inch (18.0mm) |
| Inner Diameter Tolerance | ±0.002mm (typical for precision collet bores) |
| Surface Finish | Ra < 0.4 μm on bore and outer surface (standard for high-precision collets) |
| Heat Treatment | Quenching, tempering, and cryogenic treatment at -196°C |
| Packaging | Individual plastic box, bulk packed in cartons |
| Weight (ER11) | 0.01 lb (4.5g) per unit (typical for ER11 collets) |
Qufu Chongde Precision Machinery Co., Ltd. is based in Qufu, Shandong, China, with its address listed in the local industrial development zone. The supplier is classified as harbor-tier, indicating basic legal registration and production capacity. There is no public information on company history, employee count, or revenue. The listing confirms the capability to produce ER collets with cryogenic treatment and CNC grinding, but does not state any certifications, export volume, or client references.
The supplier does not claim ISO certification, third-party quality audits, or international sales experience. Response rate and average response time are zero on the listing, indicating limited buyer engagement infrastructure. The company's differentiation lies in its use of cryogenic treatment and CNC grinding, but buyers must independently validate production consistency, lead time reliability, and quality control procedures before committing to bulk orders.
ER collets are high-precision spring collets designed for secure tool holding in CNC milling, drilling, and grinding machines. Featuring runout accuracy of 0.0003 inches and advanced quenching treatment for superior hardness and longevity, these collets ensure consistent machining performance across precision metalworking operations. Widely used in industrial manufacturing, mold making, and automotive production, ER collets are a core consumable spare part for CNC machines, supplied in standard sizes including ER11, ER16, ER20, and ER32 to accommodate various shank diameters and tooling requirements.
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Sourcing Er Collet for CNC Machine Tool from Qufu Chongde Precision Machinery Co., Ltd. - China Import Guide
Before ordering, confirm the exact ER size, accuracy grade, and material specification with the supplier. Verify that the collet's clamping range matches your tool shank diameters. Request a sample to test runout and grip consistency under actual machining conditions. Do not assume all ER collets labeled as 'high precision' meet the same standards without documented test data.
Sample delivery takes seven days; bulk orders require 35 days. Terms are FOB Qufu port. Payment is typically 30% advance, 70% against shipping documents. Confirm Incoterms, packaging labels, and customs documentation. Ensure the commercial invoice includes the correct HS code (8207.19) and declares the collet's accuracy grade. Shipping containers must be labeled with product name, size, and quantity per carton.
Conduct incoming inspection using a dial indicator to measure runout at the clamping face. Use a bore gauge to verify inner diameter against tool shank size. Check for surface defects, such as micro-cracks or oxidation, which may indicate improper heat treatment. Request a material test report for each batch. Retain a sample from each shipment for quality comparison in case of future performance issues.
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30 suppliersBuy Er Collet For Cnc Machine in Bulk — Supplier in China
When sourcing Er Collet For Cnc Machine Tool for your business, securing the right balance of quality and cost is essential. Qufu Chongde Precision Machinery Co., Ltd., a supplier based in China, offers this product with key specifications including ER Series (ER11, ER16, ER20, ER32 compatible), 0.0003 inches (0.008 mm TIR), and Quenching and Tempering for hardness and dimensional stability. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $6.2/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 8207.90, making it a staple in the CNC Machines & Spare Parts sector with strong demand from importing countries worldwide.
Er Collet For Cnc Machine Specifications, Trade Terms & Pricing
Importing Er Collet For Cnc Machine requires careful attention to shipping logistics, customs compliance, and secure payment terms. Qufu Chongde Precision Machinery Co., Ltd. offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. To ensure a smooth transaction, buyers should verify import duties for HS Code 8207.90 in their destination country. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading global B2B marketplace designed to make cross-border trade secure and efficient.
About Qufu Chongde Precision Machinery Co., Ltd. — Supplier in China
Finding trustworthy partners is the foundation of successful importing. Ask the supplier of this Er Collet For Cnc Machine for business registration and quality documents before ordering. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of manufacturers and exporters across 200+ countries. Explore similar products in the CNC Machines & Spare Parts category and connect with top-tier exporters on our comprehensive import export marketplace. Start your sourcing journey today.
Import Er Collet For Cnc Machine — Shipping, Logistics & Customs
Importing Er Collet For Cnc Machine requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties for HS Code 8207.90 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
Frequently Asked Questions About Er Collet For Cnc Machine
What is the wholesale price of Er Collet For Cnc Machine Tool?
The current listed wholesale price for Er Collet For Cnc Machine Tool from Qufu Chongde Precision Machinery Co., Ltd. is $6.2/Bags on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Qufu Chongde Precision Machinery Co., Ltd. through EximNext.
What is the Minimum Order Quantity (MOQ) for Er Collet For Cnc Machine?
The supplier, Qufu Chongde Precision Machinery Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Er Collet For Cnc Machine. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Er Collet For Cnc Machine Tool?
For international shipping and customs clearance, Er Collet For Cnc Machine Tool is classified under HS Code 8207.90. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Er Collet For Cnc Machine from China?
To import Er Collet For Cnc Machine from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Qufu Chongde Precision Machinery Co., Ltd.. Ensure you have the necessary import licenses for CNC Machines & Spare Parts products in your destination country.
How can I check Qufu Chongde Precision Machinery Co., Ltd. before ordering?
Open the Qufu Chongde Precision Machinery Co., Ltd. company profile on EximNext to see the details the company has provided. Before a bulk order, ask for business registration, certificates and export documents, and consider a sample or a small trial order.
What are the key specifications of Er Collet For Cnc Machine Tool?
The key specifications for Er Collet For Cnc Machine Tool supplied by Qufu Chongde Precision Machinery Co., Ltd. include ER Series (ER11, ER16, ER20, ER32 compatible), 0.0003 inches (0.008 mm TIR), and Quenching and Tempering for hardness and dimensional stability. For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
What packaging options are available for bulk orders of Er Collet For Cnc Machine?
Qufu Chongde Precision Machinery Co., Ltd. offers Er Collet For Cnc Machine with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Er Collet For Cnc Machine the most?
Er Collet For Cnc Machine is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Qufu Chongde Precision Machinery Co., Ltd. through our platform.
What certifications does this Er Collet For Cnc Machine supplier hold?
Qufu Chongde Precision Machinery Co., Ltd. maintains international quality certifications. These ensure that the Er Collet For Cnc Machine meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Er Collet For Cnc Machine Tool on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Qufu Chongde Precision Machinery Co., Ltd. will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
What payment methods are accepted?
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Qufu Chongde Precision Machinery Co., Ltd..
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