3J Collets are industrial-grade collets used primarily for workholding in manual and CNC lathes. With a larger body and gripping capacity than 5C collets, they are suitable for heavier, high-precision turning applications. Learn more at pactoolsusa.com.

How do 3J collets compare to 5C and 16C collets?

3J collets support a larger diameter (up to 1-3/4") and offer increased rigidity over 5C, but are slightly more compact than 16C collets. They’re ideal for users who need greater capacity than 5C without moving to a full 16C system. Compare types at pactoolsusa.com.

What machines are compatible with 3J collets?

3J collets are commonly used in manual lathes with 3J collet closers, as well as select CNC machines and collet fixtures designed for the 3J system. Check machine compatibility at pactoolsusa.com.

What sizes and shapes do 3J collets support?

3J collets are available for round, hex, and square stock. They typically hold round bar up to 1-3/4", with custom and emergency collets also available for unique profiles. Browse sizing options at pactoolsusa.com.

What are the benefits of using 3J collets?

3J collets offer strong clamping force, improved vibration resistance, and better concentricity over smaller collet systems. They are suitable for precision turning and long part runs. View performance specs at pactoolsusa.com.

What are emergency 3J collets?

Emergency (soft) 3J collets can be machined to custom diameters or shapes, allowing you to clamp irregular or delicate parts securely. These are ideal for short-run or specialty jobs. Learn more at pactoolsusa.com.

Why choose PAC Precision Tools USA for high-accuracy tooling?

We maintain strict quality control to ensure every precision tool meets the highest industry standards, delivering consistent accuracy and durability for aerospace, automotive, woodworking, metalworking, and manufacturing operations.

What CNC tooling products does PAC Precision Tools supply?

We supply a wide range of precision tools, including Collets (ER, ERS, ERG), CNC Tool Holders, Tool Holder Bushings, Retention Knobs, CNC Live & Dead Centers, and essential accessories like ER Nuts, ER Wrenches, Spindle Wipers, and HSK Coolant Tubes.

What support services does PAC Precision Tools USA offer?

PAC Precision Tools is backed by expert engineers and a customer-focused support team, committed to providing top-quality tooling solutions and outstanding technical assistance to optimize your machining performance.

Where does PAC Precision Tools source its CNC tooling products?

Our products are sourced from advanced global manufacturers, ensuring smooth operations, reduced machine downtime, and greater productivity every step of the way.

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287051S

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287053S $95.00

287052S | 3J COLLETS

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$95.00

Chicago, USA Stock -

Canada Stock -

3J SQUARE Collets

Specification

BoreSize: 24.0mm

Series: SQUARE

Delivery and Shipping

US Domestic Shipping Only: We ship exclusively within the United States using UPS as our primary carrier.
Processing Time: Orders are typically processed within 1–2 business days. Orders placed on weekends or holidays will be processed on the next business day.
Delivery Times: Delivery times vary based on the shipping method and destination (estimates are provided at checkout). Please note that carrier delays (e.g., weather or unforeseen issues) are beyond our control.
Costs & Methods: UPS Standard, Expedited, and Express methods are available. Shipping rates are calculated based on weight and destination at checkout.
Tracking & Support: Tracking information will be emailed once shipped. For tracking issues, errors, or damaged/lost packages, contact us at sales@pactoolsusa.com or 262-282-2456.

Description

Description

3J SQUARE Collets

Accuracy

PAC Precision Tools 3J Collets are designed to offer precise and reliable workholding in automatic lathes, capstan lathes, and standard turning operations. They are created to offer precise concentricity and holding power. This ensures stable work results in high-speed operations.

Standard Precision : -0.0006"

Dimensions

Features

Designed for standard 3J collet systems
Designed to offer high concentricity in precise turning operations
Offered with uniform holding force in standard turning operations
Offered with high gripping power in standard turning operations
3J-Round. Hex & Square Collets
Hardened and ground
Hold parts up to 1.750 inches or 40mm in diameter.
High grade steel for long wear Life
Collet sets available in Inch & Metric sizes
Hardened and tempered alloy steel construction
Optimized slot design to ensure balanced force distribution
Offered with high resistance against corrosion, wear, and tear to ensure longer service life

Frequently Asked Questions

1. What are 3J Collets used for in machining operations? ▼

3J Collets are used for precision workholding in lathes and CNC turning machines. They securely hold small to medium-sized workpieces during turning, grinding, and secondary operations. As a precision tools supplier in the USA, PAC Precision Tools offers 3J collets for accurate and repeatable machining.

2. How do I select the correct 3J Collet size for my workpiece? ▼

Select a 3J collet that closely matches the exact size of your workpiece. Proper sizing ensures a strong clamping force and accurate concentricity. Avoid using undersized or oversized collets to prevent slippage and runout issues.

3. How can machinists ensure consistent clamping accuracy with 3J Collets? ▼

Keep the collet and spindle clean, inspect for wear, and apply the correct tightening force. Using high-quality collets and maintaining proper setup helps ensure consistent and repeatable clamping accuracy.

4. Can 3J Collets hold round, hex, or square stock at PAC Precision Tools? ▼

Yes, 3J Collets are available for round, hex, and square stock. This flexibility makes them suitable for a variety of turning and workholding applications across different machining setups.

5. When should a 3J Collet be replaced? ▼

A 3J collet should be replaced if it shows wear, cracking, loss of grip, or increased runout. Regular inspection helps maintain accuracy and prevents workpiece slippage during machining.

6. Need help selecting 3J Collets for your machining needs? ▼

If you need help with choosing the right 3J collet for your machining operations, you can contact us at +1 262-282-2456 or email us at sales@pactoolsusa.com. PAC Precision Tools USA is a trusted CNC tools distributor and precision tools supplier in the USA.

Official PDF Resource

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Access the complete guide to our high-precision CNC tooling solutions, including Collets, Tool Holders, and essential accessories.

High-resolution technical drawings & dimensions
Comprehensive specifications for all series
Sizing charts & spindle compatibility guides

Download Catalog PDF

Why Choose PAC Precision Tools USA?

PAC Precision Tool is a trusted supplier and distributor of reliable, durable, and high-precision tooling solutions in the USA. We support aerospace, automotive, woodworking, metalworking, and manufacturing industries with consistent accuracy and performance.

High-Accuracy & Durable

We maintain strict quality control to ensure every tool meets the highest industry standards, delivering consistent accuracy and performance.

Extensive Product Range

We supply a wide range of precision tools, including Collets, Tool Holders, Bushings, Retention Knobs, CNC Centers, and essential accessories.

Reliable Support

Backed by expert engineers and a customer-focused approach, we are committed to delivering outstanding support for superior performance.

Advanced Sourcing

Sourced from advanced global manufacturers, ensuring smooth operations, reduced downtime, and greater productivity every step of the way.

Our mission is simple: to be your most reliable partner in precision tooling, ensuring smooth operations, reduced downtime, and greater productivity every step of the way.

PAC Precision Tools USA Statement