Standard Shrink Chuck with Safe-Lock™ JIS B 6339 BT40

BT40 Shrink Fit Chuck Standard

Certificate of Quality

Chuck body fine balanced G2.5 at 25.000 rpm or U < 1 gmm
All functional surfaces fine machined
Taper tolerance AT3
Coolant supply form ADB

Shrink Fit Chuck Standard Version with Safe-Lock™
JIS B 6339 · BT40

Shrink fit chuck suitable to all kind of shrink fit units.

JIS B 6339 BT40 form ADB.
Form ADB means: Central coolant supply and coolant channels through the flange which can be sealed again.

Heat resistant hot-working steel
Hardened 54 – 2 HRC
For HSS and solid carbide tools
Shank tolerance h6
With threaded holes in order to balance with balancing screws
Cooling with Cool Jet for an extra charge
Cooling with Cool Flash for an extra charge
Safe-Lock™ pull out protection included
Included in delivery: Back-up screw, tension spring

Technical data subjects to change without prior notice.

Standard version, similar to DIN 69882-8.

Features Shrink Fit Chuck Standard

The most important features:

1. High runout accuracy (< 0.003 mm)
2. Extreme clamping torque by high pressing in the clamping bore
3. Short chamfer
4. Dynamic form: Reinforced shank at long tool holders. Compromise between slimness (marginal interference contour) and rigidity
5. Cool Jet (on request)
6. Threaded bores for simple and fast balancing with screws

Safe-Lock™ for Shrink Fit Chucks

Safe-Lock™ pull out protection

Highly accurate clamping due to shrink fit technology
High torque due to form closed clamping
No loss of accuracy
No pull out and no spinning ot the tool
Groove on tool shank is directed so that the tool will be pulled into the chuck (depending on direction of rotation)

Cool Jet for Shrink Fit Chucks (optional)

Cool Jet (optional)

Optimized coolant bores, aimed at center
Coolant directly to the cutting edge
Extended tool life up to 100%
Higher reliability of cutting process
No more balls of chips on tool
Cool Jet starting from shank diameter 6 mm

Cool Flash

Cool Flash (optional)

Optimized coolant bores with coolant outlet through slots
Coolant directly to the cutting edge
Extended tool life up to 100%
No more balls of chips on tool
Optimized runout accuracy! No additional unbalance! No disturbing clearance!
Cool Flash available for shank diameter 6 - 25 mm

BT40 Shrink Fit Chuck Standard Technical Drawing

Clamping Ø D1 [mm]	6
Ø D2 [mm]	21
Ø D3 [mm]	27
L [mm]	36

Order No.

Gage length A in mm

40.640.06.7

short, 90.00 mm

DXF

Step

Clamping Ø D1 [mm]	8
Ø D2 [mm]	21
Ø D3 [mm]	27
L [mm]	36

Order No.

Gage length A in mm

40.640.08.7

short, 90.00 mm

DXF

Step

Clamping Ø D1 [mm]	10
Ø D2 [mm]	24
Ø D3 [mm]	32
L [mm]	42

Order No.

Gage length A in mm

40.640.10.7

short, 90.00 mm

DXF

Step

Clamping Ø D1 [mm]	12
Ø D2 [mm]	24
Ø D3 [mm]	32
L [mm]	47

Order No.

Gage length A in mm

40.640.12.7

short, 90.00 mm

DXF

Step

Clamping Ø D1 [mm]	14
Ø D2 [mm]	27
Ø D3 [mm]	34
L [mm]	47

Order No.

Gage length A in mm

40.640.14.7

short, 90.00 mm

DXF

Step

Clamping Ø D1 [mm]	16
Ø D2 [mm]	27
Ø D3 [mm]	34
L [mm]	50

Order No.

Gage length A in mm

40.640.16.7

short, 90.00 mm

DXF

Step

Clamping Ø D1 [mm]	18
Ø D2 [mm]	33
Ø D3 [mm]	42
L [mm]	50

Order No.

Gage length A in mm

40.640.18.7

short, 90.00 mm

DXF

Step

Clamping Ø D1 [mm]	20
Ø D2 [mm]	33
Ø D3 [mm]	42
L [mm]	52

Order No.

Gage length A in mm

40.640.20.7

short, 90.00 mm

DXF

Step

Clamping Ø D1 [mm]	25
Ø D2 [mm]	44
Ø D3 [mm]	53
L [mm]	58

Order No.

Gage length A in mm

40.640.25.7

short, 100.00 mm

DXF

Step

Clamping Ø D1 [mm]	32
Ø D2 [mm]	44
Ø D3 [mm]	53
L [mm]	58

Order No.

Gage length A in mm

40.640.32.7

short, 100.00 mm

DXF

Step

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