Holder and chuck pairing
The source pairs G3 holders with GT3-M and G12 holders with GT12-M.
Catalog reference view. final supplied configuration confirmed by quotation.
BT-GT
GT Telescopic Tapping Collet Holders
Overview
BT40 and BT50 telescopic tapping holders for GT3 and GT12 tapping chucks.
AvailabilityConfirm before order
Lead timeQuote based
Product details
BT GT telescopic tapping holders connect the listed BT40 or BT50 spindle interfaces to GT3-M or GT12-M tapping chucks. The catalog separates the smaller and larger tap ranges into different holder combinations. Choose the holder and chuck as a matched system, then confirm the tap shank, machine tapping method and required axial movement.
Tap-range groups
The listed groups are M3–M12 and M12–M24; select the correct row.
Compensation confirmation
Telescopic action is identified, but the source does not state a compensation travel value.
Specifications & model range
Dimensions are in millimeters unless otherwise stated. Confirm the final drawing before ordering.
- Interface
- BT40, BT50
- Tapping range
- M3-M24
- Compatible chuck
- GT3-M, GT12-M
4 catalog rows
| Ordering code | Tapping range | d | L1 | D | Chuck |
|---|---|---|---|---|---|
| BT40-G3-90 | M3-M12 | 19 | 90 | 46 | GT3-M |
| BT40-G12-135 | M12-M24 | 30 | 135 | 66 | GT12-M |
| BT50-G3-90 | M3-M12 | 19 | 90 | 46 | GT3-M |
| BT50-G12-135 | M12-M24 | 30 | 135 | 66 | GT12-M |
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.
- Holder and matching GT chuck codes shown
- Telescopic section and taper protected
- Ordered chucks and accessories counted individually
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.
Machine tapping
Building a tapping holder assembly for a documented machine cycle.
Tap-size changeovers
Planning matched GT chuck selections within the selected holder range.
BT tooling programs
Separating tapping holders from rigid milling and drilling holders.
Related product series
Compare alternative interfaces and complementary tooling. A related series is not automatically interchangeable.
GT3 / GT12
GT3 and GT12 Tapping Chucks
Models and specifications
G SERIES
Telescopic Quick-Change Tap Holder Sets
Models and specifications
STANDARD TAP SERIES
Machine and Hand Taps
Models and specificationsIs the holder supplied with every GT chuck size?
That is not established by the table. Specify the chucks and tap sizes required for the quotation.
What axial compensation travel is available?
The source identifies telescopic holders but does not give travel values. Confirm the required stroke against the proposed drawing.
Can one G3 holder accept all M3–M24 taps?
No. The catalog separates G3 and G12 systems with their respective tap ranges.
Is thread size enough to select the chuck?
Also provide the tap's actual shank and driving-end dimensions, together with the tapping method.