R8 to ER conversion
The holder allows selected ER collets to be used through an R8 machine connection.
Catalog reference view. final supplied configuration confirmed by quotation.
R8-ER
R8 ER Collet Holders
Overview
R8 shank ER16, ER32 and ER40 collet holders with metric or inch drawbar threads.
AvailabilityConfirm before order
Lead timeQuote based
Product details
R8 ER holders provide an ER collet interface on an R8 shank for a matched milling machine. The catalog lists ER16, ER32 and ER40 versions and two drawbar thread options. Select the thread used by the actual machine before confirming the holder; an R8 designation by itself does not resolve that choice.
Drawbar alternatives
The catalog lists M12 and 7/16-20 UNF; choose the correct one explicitly.
Three ER sizes
Compare ER16, ER32 and ER40 with their corresponding L1 and body diameter.
Specifications & model range
Dimensions are in millimeters unless otherwise stated. Confirm the final drawing before ordering.
- Interface
- R8
- Collet systems
- ER16, ER32, ER40
- Drawbar
- M12 or 7/16-20 UNF
3 catalog rows
| Ordering code | L1 | D | Drawbar thread |
|---|---|---|---|
| R8-ER16-38 | 38 | 28 | M12 / 7/16-20 UNF |
| R8-ER32-60 | 60 | 50 | M12 / 7/16-20 UNF |
| R8-ER40-65 | 65 | 63 | M12 / 7/16-20 UNF |
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.
- Drawbar thread option clearly labeled
- R8 shank and collet seat protected
- Ordered ER collets packed by bore size
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.
R8 workshop upgrades
Introducing an ER collet assortment on an existing R8 milling machine.
Mixed shank diameters
Changing collets while retaining the selected R8 ER holder.
Replacement tooling
Matching a previous holder's ER size, reach and drawbar connection.
Related product series
Compare alternative interfaces and complementary tooling. A related series is not automatically interchangeable.
R8 SERIES
R8 Collets
Models and specifications
ER8-ER40
ER Precision Collets
Models and specifications
NT30 / NT40 / NT50
NT ER Collet Holders
Models and specificationsWhich drawbar option should I select?
Match the machine's existing drawbar thread exactly: the catalog offers M12 or 7/16-20 UNF.
Is this a direct R8 collet?
No. This is an R8-shank holder for separate ER collets. Direct R8 collets are listed on their own page.
Can I use ER25 collets in the listed ER32 version?
No. Select collets belonging to the holder's specified ER family.
What if I cannot identify the drawbar thread?
Provide the machine documentation or a measured thread specification. Do not choose by approximate visual comparison.