Why use a straight shank instead of a tapered tool holder?

PAC Tools straight shank holders are ideal for machines or fixtures without taper spindles. They’re compact, easy to mount in sleeves or collet blocks, and perfect for limited-space setups.

What does 'ER' mean in ER collet systems?

'ER' stands for “Elastic Recoil,” describing the flexible spring collet design. PAC Tools ER systems offer excellent concentricity and can grip a wide range of tool diameters securely.

What sizes are ER Straight Shank Holders available in?

PAC Tools offers ER straight shank holders in various diameters like 16 mm, 20 mm, 25 mm, and more, with lengths suitable for different ER collet series such as ER16, ER25, ER32, and ER40.

Are these holders balanced for high-speed use?

Yes, PAC Tools ER straight shank holders are factory-balanced and suitable for high-speed operations. Many models support up to 20,000 RPM for precise and vibration-free machining.

How much torque can an ER collet holder transmit?

PAC Tools ER collet holders can transmit torque ranging from 30 to over 100 Nm, depending on the ER size and clamping range, offering solid performance for most machining applications.

When should I not use an ER straight shank holder?

Avoid using ER straight shank holders in heavy roughing or when extremely high torque is required. In such cases, PAC Tools recommends more rigid systems like shrink fit or hydraulic holders.

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ER Straight Shank Holders Supplier in USA

16C COLLETS

3J COLLETS

5C COLLETS

Accessories - Lock Screrw And HSK Coolent Tube

AF Collets

BORING BAR SLEEVES

BT DUAL-CONTACT

BT DUAL-CONTACT TAPER

BT RETENTION KNOBS

BT TAPER

BT taper

BT TAPER

CAT DUAL-CONTACT TAPER

CAT RETENTION KNOBS

CAT TAPER

CAT TAPER - COOL-BLAST / Cool-Flange Holder

CNC HEAVY DUTY MODEL

CNC LIVE/DEAD CENTERS

CNC SLIMLINE MODEL

CNC SMALL CASING MODEL

DA COLLETS

DA SEALED COLLETS

DEAD CENTERS

DNA (Dead Nut Accurate) Collets

DOUBLE ENDED HOLDERS

DUAL CAT TAPER - COOL-BLAST / Cool-Flange Holder

END MILL HOLDERS

End Mill Holders - SET SCREW

ER COLLET HOLDERS

ER COLLETS

ER FLOATING TAP COLLETS

ER JET SPRAY COOLANT COLLETS

ER NUT

ER Quick Change Tap Collets

ER STEEL SEALED COLLETS

ER STRAIGHT SHANK HOLDERS

ER TAP COLLETS

ER TAP STEEL SEALED COLLETS

ER WRENCH

FACE MILL HOLDERS

HSK COOLANT TUBE

HSK TAPER

HSK TAPER - COOL-BLAST / Cool-Flange Holder

HYDRAULIC HOLDERS

INTERCHANGEABLE CNC HEAVY DUTY MODEL

OTHER ACCESSORIES

OZ (EOC) Collets

Pinzas

Portaherramientas

POWER MILLING HOLDERS

QUICK CHANGE TAPPING ADAPTERS

QUICK CHANGE TAPPING HOLDERS

R8 COLLETS

Reduction Sleeves For Hydralic Chuck

RETENTION KNOBS

Screw In Type Milling Cutter

Shrink Fit Extension

SHRINK FIT HOLDERS

SHRINK FIT HOLDERS - COOL-BLAST AND COOL-FLANGE

SINGLE ENDED HOLDERS

SK COLLETS (SUPER COLLETS)

SPINDLE WIPER

STRAIGHT COLLETS FOR MILLING CHUCKS

Straight Shank Tap Holder

TG COLLETS

TG SEALED COLLETS

TG TAP COLLETS

TOOL HOLDER BUSHINGS

TOOL LOCKING DEVICE

TYPE-B BUSHINGS

Type-C Bushings

TYPE-CS BUSHINGS

TYPE-J BUSHINGS

TYPE-Z BUSHINGS

Frequently Asked Questions

1. What is an ER Straight Shank Holder? ▼

An ER Straight Shank Holder is a tool holder with a cylindrical shank designed to fit into ER collet chucks, end mill holders, or other straight-shank tool holders. It allows flexible tool clamping while maintaining good accuracy and stability. As a precision tools supplier in the USA, PAC Precision Tools offers various ER straight shank options.

2. Why are ER Straight Shank Holders used in CNC machining? ▼

They are versatile and easy to set up, making them suitable for drilling, milling, tapping, and reaming. ER Straight Shank Holders offer strong gripping force, low runout, and compatibility with many machines.

3. What tool sizes do ER Straight Shank Holders support? ▼

They are available in multiple shank diameters and ER collet sizes such as ER8, ER16, ER20, ER25, ER32, and ER40. This makes them suitable for holding a wide range of cutting tools for CNC applications.

4. Are ER Straight Shank Holders suitable for high-speed machining? ▼

Yes, they maintain good balance and gripping force at high spindle speeds. When paired with the correct ER collet, they offer stable performance and reduce vibration during machining.

5. What materials and tools can be held with ER Straight Shank Holders? ▼

They can hold carbide tools, HSS drills, taps, reamers, end mills, and other cylindrical shank tools. This makes them a flexible solution for both CNC and manual machining setups.

6. How do I maintain an ER Straight Shank Holder? ▼

Clean the shank and collet seat, remove debris, and apply a light oil coating to prevent rust. Proper maintenance improves accuracy and extends tool life.

7. Need help selecting the right ER Straight Shank Holder? ▼

If you need any guidance with choosing the right ER Straight Shank Holder for your maching needs, 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.

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