Royal ER-11 Ultra-Precision Collets

In high-speed machining, precision is everything. Royal ER-11 Ultra-Precision Collets are designed for shops that demand the highest levels of accuracy. While standard collets often vary in quality, Royal guarantees a Total Indicator Reading (TIR) of 0.0002" (6 microns) or better. This extreme concentricity ensures that your cutting tools run perfectly true, leading to superior surface finishes and significantly longer tool life.

Full Surface Contact for Maximum Grip

Unlike many competitors that offer a one-size-fits-all approach, Royal ER collets are ground to exact nominal inch and metric sizes. This precision manufacturing allows for Full Surface Contact between the collet and the tool shank. By matching the collet perfectly to your tool diameter, you achieve maximum gripping force and high-speed stability, which is critical for preventing tool pull-out and vibration in small-diameter ER-11 applications.

Standard and Sealed Models Available

We offer the complete range of Royal ER-11 solutions to fit your specific machining environment. Our Sealed ER Collets feature a unique mechanical design that blocks coolant flow without the use of rubber or silicone plugs that can wear out. These are high-pressure approved up to 1400 psi, ensuring that 100% of your coolant is delivered directly to the cutting tool tip for optimal chip evacuation.

Why Professionals Choose Royal

Royal Products has been a leader in workholding for over 80 years. Their collets are hardened and precision-ground from high-grade steel for a long service life. Most importantly, all sizes are in-stock and ready for immediate shipment. When your shop's productivity is on the line, don't settle for "good enough"—upgrade to the ultra-precision that only Royal provides.

Incentive: Free Shipping Over $100

We make it easy to stock your tool crib with the best. All orders of Royal Products over $100 qualify for Free Shipping. Whether you need a single replacement for a 1/8" end mill or a complete ER-11 Collet Set, you get premium quality delivered directly to your door at an exceptional value.

Royal ER-11 Ultra-Precision Standard Inch Collets
Part Number Nominal Size Clamping Range (Inch) Accuracy (TIR) Purchase Link
53002 1/16" 0.062" - 0.043" 0.0002" View 1/16" Collet
53004 3/32" 0.093" - 0.054" 0.0002" View 3/32" Collet
53006 1/8" 0.125" - 0.086" 0.0002" View 1/8" Collet
53008 5/32" 0.156" - 0.117" 0.0002" View 5/32" Collet
53010 3/16" 0.187" - 0.148" 0.0002" View 3/16" Collet
53012 7/32" 0.218" - 0.179" 0.0002" View 7/32" Collet
53014 1/4" 0.250" - 0.211" 0.0002" View 1/4" Collet

Royal ER-11 Ultra-Precision Standard Metric Collets
Part Number Nominal Size Clamping Range (Metric) Accuracy (TIR) Purchase Link
53402 1mm 1.0mm - 0.5mm 0.0002" View 1mm Collet
53404 2mm 2.0mm - 1.5mm 0.0002" View 2mm Collet
53406 3mm 3.0mm - 2.5mm 0.0002" View 3mm Collet
53408 4mm 4.0mm - 3.5mm 0.0002" View 4mm Collet
53410 5mm 5.0mm - 4.5mm 0.0002" View 5mm Collet
53412 6mm 6.0mm - 5.5mm 0.0002" View 6mm Collet
53414 7mm 7.0mm - 6.5mm 0.0002" View 7mm Collet

Royal ER-11 Ultra-Precision Sealed Inch Collets
Part Number Nominal Size Accuracy (TIR) Coolant Rating Purchase Link
56006 1/8" 0.0002" 1,400 psi View 1/8" Sealed Collet
56008 5/32" 0.0002" 1,400 psi View 5/32" Sealed Collet
56010 3/16" 0.0002" 1,400 psi View 3/16" Sealed Collet
56012 7/32" 0.0002" 1,400 psi View 7/32" Sealed Collet
56014 1/4" 0.0002" 1,400 psi View 1/4" Sealed Collet

Royal ER-11 Ultra-Precision Sealed Metric Collets
Part Number Nominal Size Accuracy (TIR) Coolant Rating Purchase Link
56406 3mm 0.0002" 1,400 psi View 3mm Sealed Collet
56408 4mm 0.0002" 1,400 psi View 4mm Sealed Collet
56410 5mm 0.0002" 1,400 psi View 5mm Sealed Collet
56412 6mm 0.0002" 1,400 psi View 6mm Sealed Collet
56414 7mm 0.0002" 1,400 psi View 7mm Sealed Collet

Royal ER-11 Ultra-Precision Standard Collet Sets
Part Number System Size Range Accuracy (TIR) Purchase Link
53300 Inch 1/16" - 1/4" (7-Piece) 0.0002" View Inch Set
53700 Metric 1mm - 7mm (7-Piece) 0.0002" View Metric Set