Royce Ayr ER40 Precision Collet – 7/16" Tool Shank – DIN 6388

CA$999.99
Out of stock
SKU
ER40-7/16
Made in Canada
Product Type
Precision ER40 ER Collet
Collet Series
ER40
Nominal Tool Shank
7/16 in (11.1125 mm)
Standard
DIN 6388
Overall Length
1.81 in (46 mm)
Outside Diameter
1.61 in (41 mm)
Machine Type
CNC Router
Installation
Snap collet into nut before threading nut onto tool holder

Royce Ayr · Precision Tool Holding & Clamping

Precision ER40

Collet

Precision ER40 Collet

Royce Ayr ER40-7/16 is a 7/16 in precision ER40 collet for securely clamping compatible round tool shanks in ER40 toolholding systems. Royce states its collets conform to DIN 6388 and should be snapped into the nut before the nut is threaded onto the tool holder.

7/16 inNominal Tool Shank
ER40Collet Series
46 mmCollet Overall Length
DIN 6388Collet Standard

Tool Type

Precision ER40 Collet

7/16 in nominal tool-shank collet for compatible ER40 holders and nuts, with family identification dimensions of 46 mm OAL and 41 mm OD.

ER40DIN 63887/16 inSKU ER40-7/16

System Fit

Compatible ER40 toolholders and collet nuts. Verify the holder/nut family and nominal tool-shank size before installation.

Main Product Description

The Royce Ayr ER40-7/16 is a precision ER40 collet sized for a 7/16 in round tool shank. It is intended for compatible CNC-router toolholders and collet nuts using the ER40 system.

Royce states its collets conform to DIN 6388. The ER40 family-identification envelope is 46 mm overall length and 41 mm outside diameter.

For installation, snap the collet into the nut first, then thread the nut onto the tool holder. Verify nominal shank size, clean mating surfaces, correct holder/nut family and proper tightening procedure before running the machine.

Royce Ayr ER40 precision collet for 7/16 in tool shanks Royce Ayr ER40 precision collet for 7/16 in tool shanks

Technical Specifications

ER40 Collet

  • BrandRoyce Ayr
  • Product TypePrecision ER40 ER Collet
  • SKUER40-7/16
  • Family / SeriesPrecision Tool Holding & Clamping
  • Collet SeriesER40
  • Nominal Tool Shank Size7/16 in (11.1125 mm)
  • StandardDIN 6388
  • Overall Length1.81 in (46 mm)
  • Outside Diameter1.61 in (41 mm)
  • Machine TypeCNC Router
  • InstallationSnap collet into nut before threading nut onto tool holder
  • Key Detail — Nominal Tool Shank7/16 in
  • Additional Verified DetailsCNC Router Toolholding · Precision Tool-Shank Clamping · Router Bit Holding
  • Machine / System FitCompatible ER40 toolholders and collet nuts. Verify the holder/nut family and nominal tool-shank size before installation.

Application Matrix

Best Fit Applications

CNC Router Toolholding
Precision Tool-Shank Clamping
Router Bit Holding
Drill & Boring Tool Holding
ER40 Toolholder / Nut Systems

Performance Details

Product Highlights

01

7/16 in Nominal Size

ER40-7/16 is the 7/16 in nominal tool-shank variant for the ER40 collet family.

02

DIN 6388 · ER40

The ER40 family envelope is 46 mm OAL by 41 mm OD, supporting positive collet-family identification.

03

Correct Nut Installation

Royce specifies snapping the collet into the nut before threading the nut onto the tool holder.

Before Machining

Compatibility & Installation Notes

Use only with compatible ER40 toolholders and collet nuts. Confirm the nominal 7/16 in tool-shank size before clamping. Keep the collet, nut and holder mating surfaces clean; snap the collet into the nut before threading the nut onto the holder; and do not mix collet families that may appear visually similar.

Production Outcome

Precision ER40 Toolholding

Royce Ayr ER40-7/16 combines a 7/16 in nominal tool-shank size with the verified ER40 family envelope and DIN 6388 toolholding standard.

Correct holder-family matching, clean seating, proper nut assembly and appropriate tightening are essential to concentric clamping and reliable CNC-router tool retention.

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