Series comes first
ER8, ER11, ER16, ER20, ER25, ER32 and ER40 are separate holder sizes.
Catalog reference view. final supplied configuration confirmed by quotation.
ER8-ER40
ER Precision Collets
Overview
ER collet families covering compact precision tooling through general milling sizes.
AvailabilityConfirm before order
Lead timeQuote based
Product details
The ER precision collet family spans ER8 through ER40, with a different catalog clamping range for each series. Select the holder's ER size first, then the individual collet bore for the tool shank. The family range is a selection guide and does not describe the clamping capacity of one collet.
Individual bore selection
Specify the actual shank diameter within the selected series' catalog coverage.
Holder-system check
Confirm holder, nut and collet series together when assembling a new tooling set.
Specifications & model range
Dimensions are in millimeters unless otherwise stated. Confirm the final drawing before ordering.
- Series
- ER8, ER11, ER16, ER20, ER25, ER32, ER40
- Minimum range
- 0.5-5 mm
- Maximum range
- 3-26 mm
7 catalog rows
| Series | Clamping range D |
|---|---|
| ER8 | 0.5-5 |
| ER11 | 0.5-7 |
| ER16 | 0.5-10 |
| ER20 | 1-13 |
| ER25 | 1-16 |
| ER32 | 2-20 |
| ER40 | 3-26 |
No matching model in this table. Try a shorter code or send us your drawing.
Ranges and slash-separated values describe catalog families, not every possible combination. Confirm the complete model and drawing before ordering.
Shipping photos & packing
Agree the packing method and photo requirements when confirming your order.
Order-specific photo confirmation
Verified dispatch photos for this series have not been uploaded. Request photographs of your selected model, protective packing and shipping label when confirming your order.
Discuss packing requirementsPhotos to confirm before dispatch
Use this checklist to agree what should be documented for your selected model.
- ER series and bore readable on every item
- Individual collets separated to protect surfaces
- Set contents checked against the size schedule
Stock, dispatch date and shipping method are confirmed with the quotation. Website images are not live inventory evidence.
Application scenarios
Typical selection contexts for this series, not customer project claims. Confirm machine compatibility and cutting conditions for your setup.
Milling tool changes
Selecting collets for different shank diameters in one ER holder system.
Drilling and reaming
Holding round-shank tools after confirming the holder and operation requirements.
Distributor assortments
Building a bore-by-bore stock list for specific ER series.
Related product series
Compare alternative interfaces and complementary tooling. A related series is not automatically interchangeable.
BT30 / BT40 / BT50
BT ER Collet Holders
Models and specifications
NT30 / NT40 / NT50
NT ER Collet Holders
Models and specifications
R8-ER
R8 ER Collet Holders
Models and specificationsDoes one ER32 collet cover the full listed 2–20 mm range?
No. That is the catalog coverage of the ER32 family. An individual collet must be selected for the intended shank.
Can I use an ER25 collet in an ER32 holder?
Do not mix the series. Confirm the collet, nut and holder use the same specified ER system.
What runout can I quote to my customer?
No runout value is established in this catalog data. Request a confirmed inspection requirement and quotation before making a claim.
Can I request a partial set?
List the ER series, each bore and its quantity. The quotation will confirm the offered assortment and availability.