How are OZ Collets different from ER or TG Collets?

While ER and TG collets focus on precision or high torque, OZ collets strike a balance between both. They have fewer slots than ER collets, which makes them more rigid and durable in repetitive tool changes. Explore differences at pactoolsusa.com.

What does “EOC” stand for in OZ collets?

EOC stands for “Extended Outside Clamping,” which refers to the way the collet exerts strong radial pressure on the tool shank from the outer diameter inward. It’s a designation often used in European machine tools. More info at pactoolsusa.com.

What sizes and types are available in OZ collets?

Common OZ collet sizes include EOC25, EOC32, and EOC40, each supporting different shank diameters. These are often used in turret drilling machines, tapping arms, and light CNC setups. View size charts at pactoolsusa.com.

Are OZ Collets compatible with standard holders?

No, OZ collets require dedicated OZ collet chucks or EOC-compatible toolholders. They are not interchangeable with ER or SK systems. Confirm holder compatibility at pactoolsusa.com.

How do I maintain OZ (EOC) Collets?

Regularly clean the slots and bore to prevent chip buildup. Apply a light rust-preventive oil and avoid overtightening to maintain gripping accuracy and extend life. Maintenance tips available at pactoolsusa.com.

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OZ1011 | OZ (EOC) COLLETS

Q: What are OZ (EOC) Collets?

OZ Collets, also called EOC Collets, are robust tool-holding collets commonly used in light to medium-duty machining applications. They are known for a strong clamping force and are widely used in drilling and milling operations. Learn more at pactoolsusa.com.

$26.00

Chicago, USA Stock -

Canada Stock -

OZ - 20, EOC - 20, COLLETS

Specification

BoreSize: 1/4" Inch

Series: OZ-20

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

OZ - 20, EOC - 20, COLLETS

Accuracy

OZ(EOC) Collets from the best CNC tools supplier and distributor in the USA are made for high gripping strength and accuracy in toolholding for heavy-duty CNC machining operations. They are well-known for their long clamping range and high build quality, which makes them perfect for high torque operations where tool rigidity is required at the highest level.

Standard Precision : -0.0006(15 Micron) @4D

Dimensions

OZ Series	Reference #	d1	l1
OZ6	400E	11.5mm	21mm
OZ8	401E	14.5mm	26mm
OZ10		404E		17.2mm	30mm
OZ12	407E	19.8mm	34mm
OZ16	415E	25.5mm	40mm
OZ20	4541E	29.8mm	45mm
OZ25	462E	35.05mm	52mm
OZ32	467E	43.7mm	60mm
OZ40	468E	52.2mm	68mm

Features

High gripping force for heavy-duty machining operations
Long clamping range for versatile tool diameter usage
Optimized slot design for balanced force application
Compatibility with standard OZ/EOC collet chucks available
Available Series: OZ6 through OZ40
Made from high-strength, hardened, and tempered spring steel
Precision ground internal and external surfaces for accuracy and precision
Highly resistant to wear for long-lasting performance
INCH & METRIC sizes
Crafted from high-quality European spring steel
Fractional Collets are manufactured specifically for the USA market requirements
All edges are not only deburred, but additionally rounded for guaranteed repeatability

Frequently Asked Questions

1. What are OZ (EOC) Collets used for? ▼

OZ (also known as EOC) Collets are used for holding cutting tools in CNC milling, drilling, and boring operations. They are known for a strong gripping force and good vibration control. As an OZ (EOC) Collet supplier in USA, PAC Precision Tools provides reliable collets for demanding CNC applications.

2. How do OZ Collets compare with TG or ER collets in vibration absorption? ▼

OZ Collets offer better vibration absorption than standard ER collets and perform similarly to TG collets in heavy-duty applications. Their design provides stable tool holding, which helps reduce chatter and improves surface finish during machining.

3. What innovations in OZ Collets improve coolant penetration during drilling? ▼

Modern OZ Collets are designed with optimized slot geometry that allows better coolant flow toward the cutting edge. This improves cooling, chip evacuation, and drilling performance, especially in deep-hole and continuous drilling operations. For more information, please contact us at +1 262-282-2456 or email us at sales@pactoolsusa.com.

4. How do OZ Collets perform in long continuous machining cycles without losing grip? ▼

OZ Collets maintain a strong and consistent clamping force even during long machining cycles. Their robust construction and heat-treated steel help prevent tool slippage, ensuring stable performance and repeatable accuracy over extended production runs.

5. Which CNC machining applications benefit most from OZ Collets? ▼

OZ Collets are ideal for drilling, milling, and heavy-duty machining where stability and vibration control are important. They are commonly used in automotive, aerospace, and general engineering CNC operations.

6. Need help selecting OZ (EOC) Collets for your CNC application? ▼

For more information, you can contact us here at +1 262-282-2456or email us at sales@pactoolsusa.com. PAC Precision Tools USA is a trusted CNC tools distributor in the USA and a precision tools supplier in the USA.