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

Technical drawing

BT40 Shrink Fit Chuck Standard Technical Drawing

Please select your clamping diameter:

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 BT40 Shrink Fit Chuck Standard short Pictogram
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 BT40 Shrink Fit Chuck Standard short Pictogram
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 BT40 Shrink Fit Chuck Standard short Pictogram
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 BT40 Shrink Fit Chuck Standard short Pictogram
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 BT40 Shrink Fit Chuck Standard short Pictogram
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 BT40 Shrink Fit Chuck Standard short Pictogram
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 BT40 Shrink Fit Chuck Standard short Pictogram
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 BT40 Shrink Fit Chuck Standard short Pictogram
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 BT40 Shrink Fit Chuck Standard short Pictogram
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 BT40 Shrink Fit Chuck Standard short Pictogram
short, 100.00 mm
DXF
Step
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