Shrink Fit Chuck Standard Version
DIN ISO 7388-1 SK40 (formerly DIN 69871)

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

With steep taper SK40 form AD/AF DIN ISO 7388-1 (formerly DIN 69871).
Form AD/AF 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
Included in delivery: Backup screw

Technical data subjects to change without prior notice.

Standard version, similar to DIN 69882-8.

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

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

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 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 (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

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

SK40 Shrink Fit Chuck Standard Technical Drawing

Clamping Ø D1 [mm]	3
Ø D2 [mm]	10
Ø D3 [mm]	-
L [mm]	9

Order No.

Gage length A in mm

40.440.03.1

short, 80.00 mm

Without back-up screw, without threads for balancing screws

DXF

Step

Accessory

40.447.03.1

ZG120, 120.00 mm

Without back-up screw, without threads for balancing screws

DXF

Step

Accessory

40.444.03.1

ZG130, 130.00 mm

DXF

Step

Accessory

Clamping Ø D1 [mm]	4
Ø D2 [mm]	10
Ø D3 [mm]	-
L [mm]	12

Order No.

Gage length A in mm

40.440.04.1

short, 80.00 mm

Without back-up screw, without threads for balancing screws

DXF

Step

Accessory

40.447.04.1

ZG120, 120.00 mm

Without back-up screw, without threads for balancing screws

DXF

Step

Accessory

40.444.04.1

ZG130, 130.00 mm

DXF

Step

Accessory

Clamping Ø D1 [mm]	5
Ø D2 [mm]	10
Ø D3 [mm]	-
L [mm]	15

Order No.

Gage length A in mm

40.440.05.1

short, 80.00 mm

Without back-up screw, without threads for balancing screws

DXF

Step

Accessory

40.447.05.1

ZG120, 120.00 mm

Without back-up screw, without threads for balancing screws

DXF

Step

Accessory

40.444.05.1

ZG130, 130.00 mm

DXF

Step

Accessory

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

Order No.

Gage length A in mm

40.440.06

short, 80.00 mm

DXF

Step

Accessory

40.447.06

ZG120, 120.00 mm

DXF

Step

Accessory

40.444.06

ZG130, 130.00 mm

DXF

Step

Accessory

40.442.06

oversize, 160.00 mm

DXF

Step

Accessory

40.446.06

ZG200, 200.00 mm

DXF

Step

Accessory

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

Order No.

Gage length A in mm

40.440.08

short, 80.00 mm

DXF

Step

Accessory

40.447.08

ZG120, 120.00 mm

DXF

Step

Accessory

40.444.08

ZG130, 130.00 mm

DXF

Step

Accessory

40.442.08

oversize, 160.00 mm

DXF

Step

Accessory

40.446.08

ZG200, 200.00 mm

DXF

Step

Accessory

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

Order No.

Gage length A in mm

40.440.10

short, 80.00 mm

DXF

Step

Accessory

40.447.10

ZG120, 120.00 mm

DXF

Step

Accessory

40.444.10

ZG130, 130.00 mm

DXF

Step

Accessory

40.442.10

oversize, 160.00 mm

DXF

Step

Accessory

40.446.10

ZG200, 200.00 mm

DXF

Step

Accessory

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

Order No.

Gage length A in mm

40.440.12

short, 80.00 mm

DXF

Step

Accessory

40.447.12

ZG120, 120.00 mm

DXF

Step

Accessory

40.444.12

ZG130, 130.00 mm

DXF

Step

Accessory

40.442.12

oversize, 160.00 mm

DXF

Step

Accessory

40.446.12

ZG200, 200.00 mm

DXF

Step

Accessory

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

Order No.

Gage length A in mm

40.440.14

short, 80.00 mm

DXF

Step

Accessory

40.447.14

ZG120, 120.00 mm

DXF

Step

Accessory

40.444.14

ZG130, 130.00 mm

DXF

Step

Accessory

40.442.14

oversize, 160.00 mm

DXF

Step

Accessory

40.446.14

ZG200, 200.00 mm

DXF

Step

Accessory

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

Order No.

Gage length A in mm

40.440.16

short, 80.00 mm

DXF

Step

Accessory

40.447.16

ZG120, 120.00 mm

DXF

Step

Accessory

40.444.16

ZG130, 130.00 mm

DXF

Step

Accessory

40.442.16

oversize, 160.00 mm

DXF

Step

Accessory

40.446.16

ZG200, 200.00 mm

DXF

Step

Accessory

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

Order No.

Gage length A in mm

40.440.18

short, 80.00 mm

DXF

Step

Accessory

40.447.18

ZG120, 120.00 mm

DXF

Step

Accessory

40.444.18

ZG130, 130.00 mm

DXF

Step

Accessory

40.442.18

oversize, 160.00 mm

DXF

Step

Accessory

40.446.18

ZG200, 200.00 mm

DXF

Step

Accessory

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

Order No.

Gage length A in mm

40.440.20

short, 80.00 mm

DXF

Step

Accessory

40.447.20

ZG120, 120.00 mm

DXF

Step

Accessory

40.444.20

ZG130, 130.00 mm

DXF

Step

Accessory

40.442.20

oversize, 160.00 mm

DXF

Step

Accessory

40.446.20

ZG200, 200.00 mm

DXF

Step

Accessory

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

Order No.

Gage length A in mm

40.440.25

short, 100.00 mm

DXF

Step

Accessory

40.447.25

ZG120, 120.00 mm

DXF

Step

Accessory

40.444.25

ZG130, 130.00 mm

DXF

Step

Accessory

40.442.25

oversize, 160.00 mm

DXF

Step

Accessory

40.446.25

ZG200, 200.00 mm

DXF

Step

Accessory

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

Order No.

Gage length A in mm

40.440.32

short, 100.00 mm

DXF

Step

Accessory

40.447.32

ZG120, 120.00 mm

DXF

Step

Accessory

40.444.32

ZG130, 130.00 mm

DXF

Step

Accessory

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Certificate of Quality

Shrink Fit Chuck Standard Version
DIN ISO 7388-1 SK40 (formerly DIN 69871)

Certificate of Quality

Shrink Fit Chuck Standard Version
DIN ISO 7388-1 SK40 (formerly DIN 69871)

The most important features:

The most important features:

Cool Jet (optional)

Cool Jet (optional)

Cool Flash (optional)

Cool Flash (optional)

Technical drawing

Please select your clamping diameter:

Find your representative

Find your representative

Certificate of Quality

Shrink Fit Chuck Standard VersionDIN ISO 7388-1 SK40 (formerly DIN 69871)

Certificate of Quality

Shrink Fit Chuck Standard VersionDIN ISO 7388-1 SK40 (formerly DIN 69871)

The most important features:

The most important features:

Cool Jet (optional)

Cool Jet (optional)

Cool Flash (optional)

Cool Flash (optional)

Technical drawing

Please select your clamping diameter:

Shrink Fit Chuck Standard Version
DIN ISO 7388-1 SK40 (formerly DIN 69871)

Shrink Fit Chuck Standard Version
DIN ISO 7388-1 SK40 (formerly DIN 69871)