517010 | BT TAPER | END MILL HOLDERS

$115.00

Chicago, USA Stock -

Canada Stock -

BT40-SLN7/8"-3-1/2" End Mill Holder

Specification

BoreSize - 7/8"
ProjectLength - 3-1/2"
Size - Inch
Taper - BT40

Description

Description

BT40-SLN7/8"-3-1/2" End Mill Holder

PAC Precision Tools BT Taper End Mill Holders feature a symmetrical flange design that enhances balance and stability at higher spindle speeds. Designed for precision CNC machining, these holders ensure secure clamping and consistent performance.

Features :

Symmetrical BT taper for improved high-speed balance
Balanced to 25,000 RPM at G2.5
AT3 Class taper precision
Strong torque transmission capability
Set screw locking for anti-pull-out protection
H5 bore tolerance for superior grip
Case-hardened alloy steel (HRC 56–58)
Available Taper BT30, BT40, BT50

BT Taper End Mill Holders supplier in the USA, suitable for high-speed milling and precision machining applications.

Frequently Asked Questions

1. What is a BT Taper End Mill Holder? ▼

A BT Taper End Mill Holder is made for CNC machines with BT spindles. Its symmetrical design ensures perfect balance, making it suitable for both high-speed and high-torque machining.

2. What are the benefits of using PACTools BT Taper holders? ▼

PACTools BT Taper holders provide excellent stability, precise tool clamping, and smooth rotation at high speeds. Their balanced flange design reduces vibration and improves machining accuracy.

3. What sizes are available of an End Mill Holder? ▼

PAC Precision Tools supplies BT30, BT40, and BT50 End Mill Holders, covering a wide range of CNC milling and drilling applications. Each size offers strong clamping and repeatable performance.

4. What’s the difference between BT and CAT tapers? ▼

BT holders have a symmetrical flange and metric threads, while CAT holders use an asymmetrical flange with inch threads. BT tapers are more common in Asian and European machines for high-speed cutting.

5. Can BT holders be used for coolant-through operations? ▼

Yes, many BT holders feature through-coolant designs that improve chip evacuation and keep tools cool during intensive machining operations.

6. How can I care for my BT Taper End Mill Holder? ▼

Clean after every use, inspect for wear, and lightly oil before storing. Keeping the taper surface clean ensures accurate and repeatable tool changes. For more care tips, contact us or email us.