What is an ER Steel Sealed Collet?

ER Steel Sealed Collets are precision collets with a built-in sealing design that prevents coolant from leaking through the slots, making them ideal for high-pressure coolant applications.

Where are sealed collets commonly used?

These collets are mainly used in CNC machining, especially where through-tool coolant delivery is required for deep drilling or high-speed cutting operations.

What is the main benefit of using sealed collets over standard collets?

Sealed collets maintain a leak-free coolant path, reducing coolant loss and improving tool life, chip evacuation, and machining accuracy.

Are ER Steel Sealed Collets compatible with standard ER holders?

Yes, they are designed to fit standard ER collet chucks but only support tools with solid shanks (no coolant-through holes).

How do I maintain ER sealed collets?

Wipe clean after each use, inspect the seal regularly, and avoid excessive tightening. Store in a dry location to prevent corrosion.

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210036SS | ER STEEL SEALED COLLETS

$40.00

Chicago, USA Stock -

Canada Stock -

ERSS16-11/64 Steel Sealed Collets

Weight: 0.002 kg

Specification

BoreSize: 11/64" Inch

Series: ERSS16

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

ERSS16-11/64 Steel Sealed Collets

Accuracy

PAC Precision Tools ER Steel Sealed Collets are designed for precise tool clamping with built-in seals, ensuring effective use in through-coolant machining applications. The collets ensure precise concentricity, preventing coolant leakage, making them suitable for high-pressure coolant machining applications in CNC machining centers.

Precision-engineered with premium hardened spring steel, PAC Precision Tools ER Steel Sealed Collets from a reputable supplier and distributor of CNC tools ensure uniform clamping pressure, tool stability, and long tool life.

Standard Precision : -0.0006" (15 Micron) @4D
High Precision : -0.0004" (10 Micron) @4D
Ultra Precision : -0.0002" (5 Micron) @4D

Dimensions

Collet Series	A	B
ER11 STEEL Sealed	0.444"	0.709"
ER16 STEEL Sealed	0.659"	1.063"
ER20 STEEL Sealed	0.817"	1.220"
ER25 STEEL Sealed	1.013"	1.378"
ER32 STEEL Sealed	1.289"	1.575"
ER40 STEEL Sealed	1.604"	1.811"
ER50 STEEL Sealed	2.027"	2.362"

Features

Series available: ERSS8 through ERSS50
ER STEEL Sealed collets are designed for use with shank tools with no flats.
Use of coolant collets with tools that are not cylindrical will result in coolant leakage.
Sealed to 138 BAR/2000 PSI
Only the nominal size can be clamped
High precision & Ultra precision Seled collets are also available
Corrosion-resistant surface finish for long tool life
Precision-engineered, hardened, and tempered spring steel

PAC Precision Tools ER Steel Sealed Collets are designed for drilling, reaming, and high-speed machining applications, ensuring effective coolant use. The collets are designed for precise tool clamping, ensuring efficient machining, precise surface finish, and long tool life.

Frequently Asked Questions

1. What are ER Steel Sealed Collets?▼

ER Steel Sealed Collets are special collets designed with a built-in steel seal that prevents coolant from passing through the collet. They are used for coolant-through tool holders to direct coolant only through the tool. As a precision tools supplier in the USA, PAC Precision Tools offers sealed collets for high-performance CNC machining.

2. Why are sealed collets used instead of standard ER collets? ▼

ER Steel Sealed collets are used when you need reliable coolant control. They prevent coolant leakage and ensure that coolant flows directly through the cutting tool for better cooling, chip removal, and tool life - especially in deep-hole drilling or high-speed cutting.

3. Are ER Steel Sealed Collets suitable for high-pressure coolant systems? ▼

Yes, sealed collets are designed to withstand high-pressure coolant systems without leaking. This ensures consistent coolant delivery, improved machining accuracy, and protection against heat buildup during demanding CNC operations.

4. What tool types are compatible with ER Steel Sealed Collets? ▼

ER Steel Sealed Collets work with drills, reamers, end mills, and other cylindrical shank tools that are used with coolant-through tool holders. These collets help improve cooling and chip evacuation for difficult materials like stainless steel and titanium.

5. What sizes are available for ER Steel Sealed Collets at PACTools? ▼

Clean the Sealed collets are commonly available in ER16, ER20, ER25, ER32, and ER40 sizes. Each size offers a limited clamping range to ensure a tight seal and maximum coolant pressure efficiency.

6. How do I maintain ER Steel Sealed Collets? ▼

Clean the collet after every use, keep the sealing area free of chips, and avoid using damaged tools that can scratch the seal. Proper care ensures long-lasting performance and prevents coolant leakage during machining. For more information, you can contact us here +1 262-282-2456 or email us at sales@pactoolsusa.com.

7. Are sealed collets more accurate than standard ER collets? ▼

Yes, sealed collets are typically high-precision collets with better runout control. They provide greater accuracy and tool stability, making them ideal for high-precision CNC applications. PAC Precision Tools USA - a trusted CNC tools distributor in the USA - supplies premium sealed collets for accurate machining.

8. Need help choosing the right ER Steel Sealed Collet? ▼

If you need more information or guidance with choosing the right ER steel Sealed Collet, you can contact us here Contact PAC Precision Tools +1 262-282-2456 or email us at sales@pactoolsusa.com.