What is a tool holder bushing?

A tool holder bushing is an adapter used to fit smaller-diameter tools into holders with larger bore sizes. It ensures precise alignment and secure gripping of the tool.

How many types of bushings are available?

PAC offers multiple types including Type-C, Type-CS, Type-Z, Type-J, and Type-B. Each type differs slightly in shape, slot position, and length depending on machine and tool compatibility.

What is the difference between Type-CS and Type-Z bushings?

Type-CS bushings have a set-screw slot and come with a straight-flanged design. Type-Z bushings are flush-fit style, meaning their surface stays nearly level with the holder—ideal for high-precision applications.

How are bushings used?

Bushings are inserted directly into the tool holder bore to safely mount smaller-diameter tools like drills or reamers. This helps minimize runout and maintain accuracy.

When should bushings be replaced?

Bushings should be replaced if their bore becomes loose or shows signs of wear or grooves. Worn bushings can affect tool accuracy and damage the holder.

Are bushings compatible with coolant-through systems?

Yes, certain bushings are designed specifically for coolant-through applications, allowing coolant to efficiently reach the cutting tool.

How do you ensure proper alignment when installing a bushing?

Align the set-screw with the slot on the bushing and tighten it securely. This prevents tool slippage and ensures accurate tool positioning.

Are bushings universal in size?

No, bushings are made for specific shank and holder bore sizes. It's important to select the correct type and size for each application.

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Tool Holder Bushings Supplier & Distributor 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 are Tool Holder Bushings, and why are they used in machining setups? ▼

Tool Holder Bushings are precision sleeves used to adapt smaller tool shanks to larger tool holder bores. They improve tool compatibility, stability, and accuracy in drilling and boring operations. PAC Precision Tools, a reliable Tool Holder Bushing distributor in the USA, supplies bushings that maintain concentricity and reduce vibration.

2. How do I choose the right bushing size for my tool holder? ▼

Choose a bushing that exactly matches the tool holder bore and the tool shank diameter. Proper sizing ensures a tight fit, low runout, and safe operation. PAC Precision Tools, a precision tools supplier in the USA, can help verify sizes before purchase. .

3. What are the recommended maintenance practices for tool bushings? ▼

Clean bushings regularly to remove chips and coolant residue, and apply a light rust-preventive oil. Inspect for wear, scratches, or deformation, and replace worn bushings to maintain accuracy and safety.

4. Which industries use Tool Holder Bushings the most? ▼

Industries such as automotive, aerospace, general engineering, mold & die, and CNC job shops commonly usetool holder bushings. These sectors rely on accurate tool holding and flexible tooling setups.

5. How do I prevent corrosion or wear in Tool Holder Bushings? ▼

Store bushings in a dry environment, clean them after use, and avoid moisture buildup. Using proper coolants and applying protective oil coatings helps extend service life and maintain precision.

6. Need help selecting Tool Holder Bushings for your application? ▼

If you need more help or information, contact us at +1 262-282-2456 or email sales@pactoolsusa.com . PAC Precision Tools USA is a trusted precision tools supplier in the USA and a Tool Holder Bushing distributor in the USA.

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Tool Holder Bushings Supplier & Distributor in USA

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