DOUBLE ENDED HOLDERS | ER STRAIGHT SHANK HOLDERS | Portaherramientas
Item Number
Description
Price
Drawings
Weight
Discover our CNC machine tools and accessories in our
online store.
online store.
Get Our Exclusive Product Catalog
Explore our high-quality CNC tools and accessories. Find precision-engineered products
tailored to your needs. Download now and elevate your machining operations.
Accuracy
ER Straight Shank Double-Ended Holders from PAC Precision Tools, a Top ER Straight Shank distributor serving CNC machining shops in Illinois, are designed for maximum versatility and long service life. The tool holders are designed with an ER collet system on both ends, giving the tool holders dual functionality for increased productivity and reduced tool change downtime.
The tool holders are designed from top-quality case-hardened alloy steel for consistent clamping force, rigidity, and machining accuracy.
Dimensions

Features
- ER collet system on both ends for dual functionality
- Suitable for standard ER collet series
- Accuracy: ≤ 5 Micron (0.0002” TIR)
- High precision pilot bores for increased accuracy
- Consistent strong clamping performance
- Precision-ground straight shank design
- Through-the-tool coolant capability available
- Accuracy: 0.0001" TIR or better
- All surfaces precision ground
- Engineered from premium case-hardened alloy steel
- ER Series: ER8, ER11, ER16, ER20
ER Straight Shank from a trusted tool holders supplier in the USA is ideal for use in milling operations and drilling and reaming operations.
Frequently Asked Questions
1. What is a Double Ended ER Straight Shank Holder?
A Double Ended Holder has ER collet openings on both ends, allowing two cutting tools to be mounted in one holder. This setup improves efficiency by reducing tool change time and increasing machining flexibility.
2. Why choose Double Ended Holders?
They help increase productivity by enabling fast switching between two tools without changing the holder. This is especially useful in repetitive operations or when multiple tools are used in sequence.
3. What ER sizes are available in Double Ended Holders at PACTools
Double Ended Holders come in ER sizes like ER8, ER11, ER16, and ER20. Users can choose matching or different collet sizes based on application needs at PAC Precision Tools USA.
4. Are Double Ended Holders suitable for CNC machining?
Yes, they are compatible with CNC machines and manual machines. Their dual-end design allows efficient machining when continuous tool changes are required.
5. How do I maintain a Double Ended Holder?
Clean both collet seats, remove chips before inserting tools, and ensure the shank remains straight and rust-free. Proper cleaning prevents runout and maintains accuracy on both tool ends.
6. What applications benefit most from Double Ended Holders?
They are ideal for drilling and tapping operations where two tools are frequently used. They are also useful for multi-step machining where frequent tool swaps slow production.
7. Need help selecting a Double Ended Holder?
If you need guidance choosing the Double Ended Holder, you can contact us here +1 262-282-2456 or email us at sales@pactoolsusa.com. PAC Precision Tools USA is a trusted CNC tools distributor in the USA.
Quick Link
- Tool Holders
- Collets
- Tool Holders Bushings
- Retention Knobs
- CNC Live/Dead Centers
- Other Accessories
- ER Collet Holders
- End Mill Holders
- Hydraulic Holders
- Face Mill Holders
- Shrink Fit Holders
- Tooling Packages
- Power Milling Holders
- ER Collets
- ER Steel Sealed Collets
- ER Jet Spray Coolant Collets
- SK Collets (Super Collets)
- Reduction Sleeves For Hydraulic Chuck
- Straight Collets For Milling Chucks
- Quick Change Tapping Adapters
- Boring Bar Sleeves
- CNC Dead Centers
- ER Wrench
- Tool Locking Device
