KRONTRA

ER series guide

ER Collets

Compare the six featured ER collet families and use the reference body dimensions to identify the likely series before quotation.

Product families

Select an ER series

Selected standard metric ER collet sizes are available for evaluation. Other specifications are confirmed upon request.

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ER seriesER11 Collets11.5 mm × 18 mm reference bodyReview series ER seriesER16 Collets17 mm × 27.5 mm reference bodyReview series ER seriesER20 Collets21 mm × 31.5 mm reference bodyReview series ER seriesER25 Collets26 mm × 34 mm reference bodyReview series ER seriesER32 Collets33 mm × 40 mm reference bodyReview series ER seriesER40 Collets41 mm × 46 mm reference bodyReview series
Assorted ER collets used as a family referenceSupplied product image

English specification reference

ER series overall dimensions

Reference overall diameter and length transcribed from the supplied product listing. Confirm the required bore size, tolerance grade and packaging when requesting a quotation.

ER11

Diameter
11.5 mm
Length
18 mm

ER16

Diameter
17 mm
Length
27.5 mm

ER20

Diameter
21 mm
Length
31.5 mm

ER25

Diameter
26 mm
Length
34 mm

ER32

Diameter
33 mm
Length
40 mm

ER40

Diameter
41 mm
Length
46 mm

These are overall reference dimensions, not a clamping-range table. Application suitability remains subject to model confirmation.

Final material, dimensions, runout, packaging and availability are confirmed in the formal quotation.

Visual references

ER collet selection at a glance

English reference graphics reorganized from owner-supplied product photography for faster series and inquiry preparation.

KRONTRA ER11 through ER40 reference overall body size guide

ER series reference sizes

A visual comparison of the six featured ER collet body sizes.

KRONTRA ER32 example nominal bore visual for 1 mm, 3 mm, 6 mm and 6.35 mm

ER32 example bores

Representative nominal bore examples for inquiry preparation.

KRONTRA ER collet packaging and storage presentation options

Packaging and presentation

Individual containers, protective storage and organized bulk handling.

Exact bore availability, packaging format and product specification are confirmed with the quotation.

Selection note

Confirm more than the body size

Final selection depends on the ER series, nominal bore, collet chuck, tolerance requirement and application.

  1. 01Identify the ER series
  2. 02Provide the nominal bore
  3. 03Share quantity and application
  4. 04Confirm performance and packaging

ER collet inquiry

Need a specific ER collet?

Send the ER series, nominal bore, quantity and application, or attach a current model reference.

Request an ER quote →Email KRONTRA