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SDC back pull collet
8466100000
steel
0.005mm
SDC Real Pull Collets CNC DC Pull Back Collets DC6 DC8 Slim Collet
1. High accuracy extra slim collet
4. For deep hole drilling processing
| DC extra slim collet | |
| Model | d |
| DC04 | 2,3,4 |
| DC06 | 2,3,4,5,6 |
| DC08 | 3,4,5,6,7,8 |
| DC12 | 3,4,5,6,7,8,9,10 |
Package and shipment
1. neutral treatment, one pc in the plastic bag firstly, then in the plastic box, outside is express carton.
2. Delivery time is 7-10days, if you need bulk goods, delivery time will be one month.
1. Our factory was found in 1998, professional produced GT precision modular vise, quick change tool post, tool holder, collet chuck, etc. many sorts of machine tools accessories.
2. We have export experience for more than 10 years , Our productions export to more than 20 countries and regions.
3. Our company adheres to the principles of "quality first, customers supreme and reputation fundamental".
4. Good pre-sale and after-sale service is supply, any time contact us freely.
When machining deep pockets, steep walls, or complex mold cavities, standard ER collet chucks often cause interference due to their large nut diameters. The SDC / DC Slim Collet System is designed to solve this exact problem. The "DC" (Direct Clamping / Slim) collet features a much smaller taper angle (typically 6 to 8 degrees) compared to an ER collet. This allows the collet to sit deeper inside a remarkably slender tool holder. The "pull-back" mechanism ensures that as the nut is tightened, the collet is drawn perfectly straight into the holder's taper, delivering massive gripping force and ultra-high precision without the bulk of a traditional collet nut.
Ultra-Slim Profile: Designed to be used with slim chucks, providing maximum clearance for deep cavity machining, reducing the need for excessively long (and vibration-prone) cutting tools.
0.005mm High Precision: The shallow taper angle and extended gripping length ensure a Total Indicator Runout (T.I.R.) of ≤ 0.005mm, drastically improving surface finish and extending the life of micro end mills and drills.
Strong Gripping Torque: The pull-back seating action creates a uniform, 360-degree clamping force along the entire shank of the cutting tool, preventing tool pull-out during high-speed or high-feed milling.
Premium Spring Steel: Manufactured from high-quality SUJ2 or 65Mn spring steel, hardened to HRC 44-48, and sub-zero treated to maintain elasticity and accuracy over thousands of tool changes.
Mirror Finished Surfaces: The internal bore and external taper are precision-ground and polished to ensure flawless contact with the tool holder, maximizing rigidity and minimizing vibration.
Direct Manufacturer Savings: Bypass trading companies and source premium high-precision CNC collets directly from our factory for highly competitive wholesale pricing.
Comprehensive Size Range: We manufacture the full spectrum of SDC/DC collet sizes to fit your specific slim chucks:
DC4: Clamping range 1.0mm - 4.0mm
DC6: Clamping range 2.0mm - 6.0mm
DC8: Clamping range 2.0mm - 8.0mm
DC10: Clamping range 2.0mm - 10.0mm
DC12: Clamping range 3.0mm - 12.0mm
Strict Quality Control: Every single collet is inspected using high-precision optical comparators and runout gauges before packaging to guarantee it meets the 5-micron standard.
Complete Tooling Solutions: We also manufacture the corresponding BT, SK, and HSK Slim Chuck Tool Holders and specialized clamping nuts to provide a complete, guaranteed-accuracy system
Q1: What is the main difference between an ER collet and a DC (Slim) collet?
A: The primary differences are the taper angle and the physical profile. ER collets have a wider 16-degree taper, giving them a larger clamping range (usually 1mm of collapse) but requiring a bulkier nut. DC collets have a much shallower taper (around 6-8 degrees). They have a smaller clamping range (typically only 0.5mm or exact size) but offer superior runout accuracy, higher gripping force, and allow for a much slimmer tool holder design for tight clearances.
Q2: Are SDC collets and DC collets the same thing?
A: Yes, in the machining industry, "SDC" (Slim Direct Collet) and "DC" collets generally refer to the same standard of slim-profile, shallow-taper collets used in high-speed slim chucks. Different machine tool brands may use slightly different acronyms (like SK or SX), but DC and SDC are interchangeable.
Q3: Can a DC8 collet clamp a 7.5mm tool?
A: Unlike ER collets, DC collets have a very limited collapse range to maintain their extreme accuracy. A standard DC collet is designed to clamp the exact size tool shank (e.g., an 8.0mm collet for an 8.0mm shank). While some offer a 0.5mm collapse range, for the best runout (≤ 0.005mm) and gripping force, we strongly recommend using the exact size collet for your cutting tool.
Q4: Do I need a special wrench for the DC slim chuck nut?
A: Yes. Because the nut is designed to be as slim as possible, it does not have standard hex or spanner slots. It requires a specialized roller bearing wrench or a specific slim-profile spanner wrench to tighten the nut without damaging its perfectly balanced cylindrical shape.
Eliminate clearance issues and achieve flawless surface finishes with our Ultra-Precise SDC / DC Pull Back Collets.
Contact our sales team today for a complete catalog, sizing assistance, and bulk pricing.
