MT2 ER25 collet chuck
MT2-ER25-55 lists L = 55 mm, D = 42 mm and G = M10x1.5. Match the MT2 socket and drawbar retention, then specify the individual ER25 collet bores.
Catalog reference image. Final configuration is confirmed in the quotation.
CNC Tool Holders
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MT2 / MT3 / MT4
MT ER Collet Holders
Overview
MT2, MT3 and MT4 Morse taper ER collet holders. Listed combinations use ER20–ER40 collets and M10, M12 or M16 drawbar threads; match the exact model row.
AvailabilityConfirm before order
Lead timeQuote based
Product description
MT ER holders combine a Morse taper machine connection with a selected ER collet size. The catalog lists MT2, MT3 and MT4 versions, with drawbar threads stated for each group. Choose the Morse taper and thread together, then check the available ER combination and length against the machine and tool-access requirements.
Specified drawbar threads
The table identifies M10x1.5, M12x1.75 or M16x2 by model group.
MT4 ER32 and ER40 collet chucks
MT4-ER32-60 lists L = 60 mm and D = 50 mm; MT4-ER40-70 lists L = 70 mm and D = 63 mm. Both use M16x2 drawbar threads. Choose the ER family for your tool shanks and confirm machine retention.
MT2 ER20 or MT2 ER25 collet chuck?
Both listed MT2 holders use an M10x1.5 drawbar thread. Compare the ER family and the catalog L and D values before selecting the assembly:
- MT2-ER20-52: L = 52 mm, D = 34 mm; select separate ER20 collets. Request MT2-ER20-52.
- MT2-ER25-55: L = 55 mm, D = 42 mm; select separate ER25 collets. Request MT2-ER25-55.
ER20 and ER25 identify different collet families. List each required tool-shank diameter and collet quantity with the holder model. Confirm the machine retention arrangement and the drawing reference points for L and D; the shared MT2 taper and drawbar thread do not make the two ER front ends interchangeable.
Checking an MT3 ER32 order
For MT3-ER32-60, the catalog lists L = 60 mm, D = 50 mm and drawbar thread G = M12x1.75. Include the pitch in the request: “M12” alone does not state the complete thread. Match the taper, retention arrangement and dimensions to the actual machine.
Start an inquiry with this catalog row. Add the ER32 collet bores and quantities, and state whether a nut or other accessories are required. The dimensions shown here are catalog fields; use the final drawing to confirm their reference points.
Do not select by taper size alone
The listed MT holders have drawbar-threaded connections. A matching Morse taper socket does not by itself establish that a machine or its retention system is suitable for the intended operation. Share the machine specification if you are replacing tooling or changing the holder arrangement.
See ER collets for the tool shank and compare BT, NT, R8 and MT machine connections.
MT4 ER32 or MT4 ER40: which should you specify?
Both listed MT4 collet chucks use an M16x2 drawbar thread. Compare the ER front end and catalog dimensions before choosing a model.
| Model / inquiry | L | D |
|---|---|---|
| MT4-ER32-60 | 60 | 50 |
| MT4-ER40-70 | 70 | 63 |
ER32 and ER40 are different collet series, not interchangeable front ends. Choose for the required tool-shank sizes, then check machine retention, access and the final drawing’s L and D reference points.
Include the machine model, holder quantity and separate collet bore schedule. Confirm the nut, individual collets and wrench required in the quotation; a larger ER series is not automatically the better choice.
Download the MT ER selection worksheet
Morse taper ER collet chuck selection and inquiry worksheet (fillable PDF, 2 pages)
Keep the seven MT2, MT3 and MT4 catalog rows beside a fillable inquiry form. Record the full drawbar thread, selected holder, separate collet bores, inspection request and delivery destination. Save the completed copy and email it to kevin@furuitooling.com; the PDF does not submit automatically. It is an inquiry aid, not a fit approval or inspection certificate.
Specifications & model range
Dimensions are in millimeters unless otherwise stated. Confirm the final drawing before ordering.
- Interface
- MT2, MT3, MT4
- Collet systems
- ER20, ER25, ER32, ER40
- Drawbar
- M10, M12 or M16
7 catalog rows
Select an underlined catalog reference to include that row in your inquiry.
| Ordering code | L, mm | D, mm | Drawbar thread G (diameter × pitch) |
|---|---|---|---|
| MT2-ER20-52 | 52 | 34 | M10x1.5 |
| MT2-ER25-55 | 55 | 42 | M10x1.5 |
| MT3-ER25-55 | 55 | 42 | M12x1.75 |
| MT3-ER32-60 | 60 | 50 | M12x1.75 |
| MT3-ER40-70 | 70 | 63 | M12x1.75 |
| MT4-ER32-60 | 60 | 50 | M16x2 |
| MT4-ER40-70 | 70 | 63 | M16x2 |
No matching model in this table. Try a shorter code, or send your required size or drawing.
Ranges and slash-separated values describe catalog families, not every possible combination. Confirm the complete model and drawing before ordering.
Application scenarios
Typical selection contexts for this series, not customer project claims. Confirm machine compatibility and cutting conditions for your setup.
Morse taper milling
Selecting an ER holder for a spindle with a confirmed drawbar arrangement.
Collet-system conversion
Reusing a suitable ER collet assortment through a different machine-side holder.
Tool-room replacement
Matching taper, thread and holder length to an existing setup.
Inspection & order review
Specify the dimensions, tolerances and records your order requires. Acceptance criteria must be agreed for the selected model.
Catalog fields to check
- Ordering code
- L, mm
- D, mm
- Drawbar thread G (diameter × pitch)
Check the drawing reference faces and units. A catalog size alone does not define a tolerance or an inspection method.
Records to request
List any required dimensional report, material document or model identification photograph in your inquiry. Confirm availability and scope in the quotation.
For a drawing-based part, include the drawing revision and identify the critical dimensions. Website photographs are not inspection reports.
Packaging & delivery
Agree the packing method and photo requirements when confirming your order.
Order-specific photo confirmation
No verified shipment photographs for this series are currently published. Include selected-model, protective-packing and outer-label photos in your order requirements.
Discuss packing requirementsPhotos to confirm before dispatch
Use this checklist to agree what should be documented for your selected model.
- MT and thread pitch marked in the packing list
- Taper and threaded connection protected
- ER size and accessory counts verified
Stock, dispatch date and shipping method are confirmed with the quotation. Website images are not live inventory evidence.
Technical resources
Product specifications
Keep a copy of the current series information for comparison. Confirm the final model and drawing before placing an order.
View specificationsCompare tool-holder connections
Read interface names and ordering codes before choosing a holder.
Read the guideRelated selection information
Browse the existing tooling guides and compare product families before selecting a model.
Browse technical resourcesRelated product series
Compare alternative interfaces and complementary tooling. A related series is not automatically interchangeable.
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Morse Taper Sleeves and Extensions
Models and specificationsDoes an MT2 collet chuck quotation include a complete collet set?
Specify the holder and accessories separately. Choose MT2-ER20-52 or MT2-ER25-55, then list the required ER collet bores and quantities, nut and wrench. Confirm what is included in the quotation; the holder model alone does not define a complete set.
Which ER sizes and drawbar threads are listed for MT2, MT3 and MT4?
MT2 is listed with ER20 or ER25 and an M10x1.5 thread. MT3 is listed with ER25, ER32 or ER40 and M12x1.75. MT4 is listed with ER32 or ER40 and M16x2. The table does not list every ER size on every Morse taper; MT2-ER32, for example, is not one of the seven listed models.
Are MT3-ER32-60 and MT4-ER32-60 interchangeable?
No. Both rows list L = 60 mm and D = 50 mm, but they have different Morse tapers and drawbar threads. MT3-ER32-60 uses M12x1.75; MT4-ER32-60 uses M16x2. Matching the ER32 end and the listed dimensions does not make the machine-side connections interchangeable.
Is a drill-press socket automatically suitable for milling with this holder?
No. A matching taper alone does not approve the machine, retention arrangement or operation. Review the complete setup.