JT and B taper choices
The JT rows list JT2, JT33 and JT6. The B rows list B10, B12 and B16, with B18 also shown for BT40 and BT50.
Catalog reference image. Final configuration is confirmed in the quotation.
CNC Tool Holders
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BT-JT / BT-B
BT Drill Chuck Arbors
Overview
BT30, BT40 and BT50 drill chuck arbors for JT2, JT33, JT6 and selected B-taper chucks. Match both the spindle interface and the drill chuck's mounting taper.
AvailabilityConfirm before order
Lead timeQuote based
Product description
BT drill chuck arbors connect a BT30, BT40 or BT50 spindle interface to the mounting socket of a separate drill chuck. The catalog separates JT and B taper families. For example, the BT40-JT row lists JT2, JT33 and JT6 with L1 options of 45 or 105 mm; BT40-B lists B10, B12, B16 and B18 with L1 options of 45 or 90 mm. Select from the chuck's socket code, not the drill diameter.
Lengths depend on the family
BT30 rows list L1 = 45 mm. BT40-JT lists 45/105 mm, while BT40-B lists 45/90 mm. These are arbor catalog dimensions, not a stated overall length for the assembled chuck and drill. For a reach requirement, provide a sketch identifying the reference faces and requested distance.
Arbor-only selection
This page covers the mounting arbor. Specify separately whether the quotation should include a drill chuck and retention components.
BT40 B16 vs JT6: select the chuck socket first
B16 and JT6 identify different chuck mounting tapers; they are not interchangeable. Read the socket code on the chuck or its drawing before choosing an arbor.
| Check | B16 socket | JT6 socket |
|---|---|---|
| Ordering family | BT40-B | BT40-JT |
| Family L1 options (mm) | 45 / 90 | 45 / 105 |
| Catalog pull-stud thread | M16 | M16 |
| Start an inquiry | Use BT40-B row | Use BT40-JT row |
The inquiry links select a family row, not a complete individual model. Add B16 or JT6, your requested L1, quantity, chuck identification and machine retention details. M16 alone does not define the full retention component. Confirm the exact combination and whether the quotation is for the arbor only or includes a separate drill chuck.
Drill chuck arbor, integrated chuck or Morse taper adapter?
For a separate drill chuck with a JT or B mounting socket, select an arbor from this page using the exact socket code. Do not identify its mounting taper from the diameter of the drill held in the chuck.
If you want a combined holder and chuck rather than this separate arbor, compare BT SPU integrated drill chuck holders. For a tool with a Morse taper shank, compare BT MTA Morse taper adapters or BT MTB Morse taper adapters, matching the existing designation and drawing. These are separate mounting arrangements, not interchangeable names for a drill chuck arbor.
Specifications & model range
Dimensions are in millimeters unless otherwise stated. Confirm the final drawing before ordering.
- BT interface
- BT30, BT40, BT50
- Chuck taper
- JT2, JT33, JT6, B10, B12, B16, B18
- Pull stud thread
- See selected row; confirm BT50-B
6 catalog rows
Select an underlined catalog reference to include that row in your inquiry.
| Ordering family | Taper options | L1 options | Pull stud |
|---|---|---|---|
| BT30-JT | JT2/JT33/JT6 | 45 | M12 |
| BT40-JT | JT2/JT33/JT6 | 45/105 | M16 |
| BT50-JT | JT2/JT33/JT6 | 45/105 | M24 |
| BT30-B | B10/B12/B16 | 45 | M12 |
| BT40-B | B10/B12/B16/B18 | 45/90 | M16 |
| BT50-B | B10/B12/B16/B18 | 45/105 | Confirm |
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.
Drill chuck mounting
Connecting a known taper-mounted chuck to a confirmed BT spindle.
Tool-room replacement
Replacing an arbor while retaining a serviceable, correctly matched chuck.
Drilling assemblies
Specifying arbor and chuck as separate items in a complete tooling inquiry.
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 family
- Taper options
- L1 options
- Pull stud
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.
- BT and chuck taper codes both visible
- Chuck mounting taper protected from dents
- Separately ordered chuck and retention parts itemized
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.
BT30 / BT40 / BT50
BT ER Collet Holders
Models and specifications
BT-MTA
BT MTA Morse Taper Adapters
Models and specifications
BT-SPU
BT SPU Integrated Drill Chuck Holders
Models and specificationsCan I replace a B16 arbor with a JT6 arbor?
Do not substitute taper codes based on visual similarity. The arbor must match the chuck's specified socket.
Does B16 mean the chuck grips a 16 mm drill?
No. B16 in this arbor table identifies the mounting taper at the chuck end; it is not the drill-gripping capacity. Check the selected chuck's capacity and mounting socket separately. This page lists the arbor, so request the chuck as a separate item if you need an assembly.
How do I request a BT40 B16 or JT6 drill chuck arbor?
For B16, specify the BT40-B family, B16 chuck socket and required L1 of 45 or 90 mm. For JT6, use the BT40-JT family with L1 of 45 or 105 mm. Include the machine's complete retention requirements and whether a separate chuck is needed; a pull-stud thread alone does not confirm fit.
Why does one pull-stud table cell say Confirm?
The BT50-B source row is not complete for that value. It must be verified rather than inferred from adjacent rows.