Ultra-Precision ER Collets

Inch and Metric Sizes

Royal ER Collets are available in both inch and metric sizes. This optimizes the surface contact between the collet and cutting tool and results in higher accuracies, stronger grip force, better part finishes, and longer cutting tool life.

Extremely Accurate

Runout is guaranteed to be 6 microns (0.0002″) TIR, or better. Each collet is inspected to this standard prior to shipping.

Heavy Duty Construction

Royal ER Collets are made from high-grade steels imported from Germany and are hardened for long life.

Sealed Models Available

For precise coolant delivery to the tip of the cutting tool.

Large Inventory

All sizes are in-stock, ready for immediate shipment.

Wide Gripping Range

Royal standard ER Collets contain 16 slots, providing a larger gripping range than other brands.

Great Value

Very competitive prices make these high-quality ER Collets the best value in the industry.
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Royal Sealed Ultra-Precision ER Collets

  • Ultra-Precision Accuracy – 0.0002″ TIR guaranteed.
  • High-pressure approved to 1400 psi.
  • Unique design is mechanically sealed by virtue of the rear slots terminating prior to the annular groove, completely blocking the path of coolant flow to the front of the collet.
  • When using thru-coolant cutting tools, these collets ensure 100% coolant delivery to the tip of the cutting tool.
  • Superior to collets sealed with silicone/rubber plugs because plugs are limited to lower operating pressures and are subject to wear.
  • Unlike standard ER collets, sealed models do not have a wide collapsibility range, requiring the collet bore to be matched to the cutting tool shank diameter.

A Perfect Match to Your Cutting Tool Diameter

All Royal ER Collets are available from stock in both inch and metric sizes. This is very important because it enables you to select a collet that has been ground to your precise cutting tool size.

Using a collet that is perfectly matched to the cutting tool diameter ensures that full surface contact is achieved, resulting in higher gripping force, better accuracy, less vibration, better surface finishes, and longer tool life.
Other Brands

Single Point Contact when Using Metric Collets to Hold Inch-Sized Tooling, or Vise Versa

Royal Brand

Full Surface Contact Because Royal ER Collets are Ground to Exact Inch and Metric Sizes

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Royal ER-11 Ultra-Precision Standard ER Collets (Inch)

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Royal ER-11 Ultra-Precision Standard ER Collets (Metric)

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Royal ER-11 Ultra-Precision Sealed ER Collets (Inch)

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Royal ER-11 Ultra-Precision Collet Sets

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COLLET
SERIES
ER COLLET
TYPE
RANGE
NUMBER OF
COLLETS IN SET
PART NUMBER
PRICE
ER-11
Standard
1⁄16″ - 1⁄4″ x 32nds
7
53300
$336.00
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ER-11
Standard
1 - 7mm x 1mm
7
53700
$336.00
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*Unlike standard ER collets, sealed models do not have a wide collapsibility range and therefore must be sized to the cutting tool diameter.

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Royal ER-16 Ultra-Precision Standard ER Collets (Inch)

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Royal ER-16 Ultra-Precision Sealed ER Collets (Inch)

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Royal ER-16 Ultra-Precision Collet Sets

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COLLET
SERIES
ER COLLET
TYPE
RANGE
NUMBER OF
COLLETS IN SET
PART NUMBER
PRICE
ER-16
Standard
1⁄16″ - 3⁄8″ x 32nds
11
53302
$528.00
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ER-16
Sealed
No range*
9
56302
$450.00
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ER-16
Standard
1 - 10mm x 1mm
10
53702
$480.00
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ER-16
Sealed
No range*
8
56702
$400.00
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Royal ER-20 Ultra-Precision Standard ER Collets (Inch)

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Royal ER-20 Ultra-Precision Sealed ER Collets (Inch)

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ER COLLET
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NUMBER OF
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PRICE
ER-20
Standard
5⁄32″ - 1⁄2″ x 32nds
12
53304
$636.00
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ER-20
Sealed
No range*
12
56304
$696.00
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ER-20
Standard
2 - 13mm x 1mm
12
53704
$636.00
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ER-20
Sealed
No range*
11
56704
$638.00
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Unlike standard ER collets, sealed models do not have a wide collapsibility range and therefore must be sized to the cutting tool diameter.

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Royal ER-25 Ultra-Precision Standard ER Collets (Inch)

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COLLET
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ER COLLET
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PRICE
ER-25
Standard
5⁄32″ - 5⁄8″ x 32nds
16
53306
$896.00
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ER-25
Sealed
No range*
16
56306
$976.00
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ER-25
Standard
2 - 16mm x 1mm
15
53706
$840.00
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ER-25
Sealed
No range*
14
56706
$854.00
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Unlike standard ER collets, sealed models do not have a wide collapsibility range and therefore must be sized to the cutting tool diameter.

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Royal ER-32 Ultra-Precision Standard ER Collets (Inch)

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Royal ER-32 Ultra-Precision Collet Sets

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COLLET
SERIES
ER COLLET
TYPE
RANGE
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PRICE
ER-32
Standard
7⁄32″ - 3⁄4″ x 32nds
18
53308
$1,152.00
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ER-32
Sealed
No range*
18
56308
$1,260.00
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ER-32
Standard
3 - 20mm x 1mm
18
53708
$1,152.00
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ER-32
Sealed
No range*
17
56708
$1,190.00
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Unlike standard ER collets, sealed models do not have a wide collapsibility range and therefore must be sized to the cutting tool diameter.

View ER-11 Collets
View ER-16 Collets
View ER-20 Collets
View ER-25 Collets
View ER-32 Collets
View ER-40 Collets

Royal ER-40 Ultra-Precision Standard ER Collets (Inch)

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Royal ER-40 Ultra-Precision Collet Sets

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COLLET
SERIES
ER COLLET
TYPE
RANGE
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PART NUMBER
PRICE
ER-40
Standard
1⁄8″ - 1″ x 16ths
15
53310
$1,110.00
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ER-40
Sealed
No range*
14
56310
$1,134.00
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ER-40
Standard
4 - 26mm x 1mm
23
53710
$1,702.00
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ER-40
Sealed
No range*
23
56710
$1,863.00
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Unlike standard ER collets, sealed models do not have a wide collapsibility range and therefore must be sized to the cutting tool diameter.