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Tool chucks
Tool chucks DIN 69871 SK 30/40/50

Shrink-fit chuck ST40 ISO 7388-1
DIN 69871 coolant supply AD/B

AD/ AF G 2,5 < – 0,003
40 IK 25000 rpm
Application: ƒ For shrinking and reverse shrinking of cemented
For clamping milling tools and drill bits with straight carbide and HSS tools
shank, tolerance h6. Suitable for shrinking on induc- ƒ 4 additional holes for fine balancing
tive contact and hot air devices. ƒ Hole for Balluff chip Clamping Technology
Execution: Advantage:
ƒ Guarantees maximum concentricity < 0.003 mm ƒ High positioning and repeat accuracy
ƒ Heat-resistant and high-temperature tool steel ƒ Shrink-fit chuck ideal for high rotation speeds A
1,600-1,800 N/mm ƒ Slim design, low interference contour
ƒ Hardness 52 + 2 HRC ƒ Very high torque transfer
ƒ Maximum coolant pressure 80 bar ƒ Extremely cost-effective 4,5°
ƒ Adjustment travel 10 mm, can be adjusted on both d d2 D
sides
G V l4
l2

Tool holding device SK 40 SK 40 SK 40 SK 40 SK 40 SK 40 SK 40 SK 40
ISO 7388-1 7388-1 7388-1 7388-1 7388-1 7388-1 7388-1 7388-1
Clamping Ø d (mm) 3 4 5 6 8 10 12 14
Tapered Ø d2 (mm) 10 15 15 21 21 24 24 27
Outer Ø D (mm) 17 22 22 27 27 32 32 34
Projection length A (mm) 80 80 80 80 80 80 80 80
Clamping depth L2 (mm) 22 26 30 36 36 41 47 47
Form AD/AF AD/AF AD/AF AD/AF AD/AF AD/AF AD/AF AD/AF
Suitable for thread G M6 M6 M6 M5 M6 M8 x 1 M10 x 1 M10 x 1
Concentricity tolerance
(mm) 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003
Coolant supply Internal axial/ Internal axial/ Internal axial/ Internal axial/ Internal axial/ Internal axial/ Internal axial/ Internal axial/
internal radial internal radial internal radial internal radial internal radial internal radial internal radial internal radial
Balancing quality G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25
004
006
012
005
010
014
003
008
Ident. No.
23424... Unit price, € O. R. O. R. O. R. O. R. O. R. O. R. O. R. O. R.
Tool holding device SK 40 SK 40 SK 40 SK 40 SK 40 SK 40 SK 40 SK 40
ISO 7388-1 7388-1 7388-1 7388-1 7388-1 7388-1 7388-1 7388-1
Clamping Ø d (mm) 16 18 20 25 32 3 4 5
Tapered Ø d2 (mm) 27 33 33 44 44 10 15 15
Outer Ø D (mm) 34 42 42 53 53 20 22 22
Projection length A (mm) 80 80 80 100 100 120 120 120
Clamping depth L2 (mm) 50 50 52 58 62 - - -
Form AD/AF AD/AF AD/AF AD/AF AD/AF AD/AF AD/AF AD/AF
Suitable for thread G M12 x 1 M12 x 1 M16 x 1 M16 x 1 M16 x 1 - - -
Concentricity tolerance 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003
(mm)
Coolant supply Internal axial/ Internal axial/ Internal axial/ Internal axial/ Internal axial/ Internal axial/ Internal axial/ Internal axial/
internal radial internal radial internal radial internal radial internal radial internal radial internal radial internal radial
Balancing quality G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25
025
016
Ident. No.
018
032
105
020
104
103
23424... Unit price, € O. R. O. R. O. R. O. R. (O. R.) (O. R.) (O. R.) (O. R.)
Tool holding device SK 40 SK 40 SK 40 SK 40 SK 40 SK 40 SK 40 SK 40
ISO 7388-1 7388-1 7388-1 7388-1 7388-1 7388-1 7388-1 7388-1
Clamping Ø d (mm) 6 8 10 12 14 16 18 20
Tapered Ø d2 (mm) 21 21 24 24 27 27 33 33
Outer Ø D (mm) 27 27 32 32 34 34 42 42
Projection length A (mm) 120 120 120 120 120 120 120 120
Clamping depth L2 (mm) 36 36 41 47 47 50 50 52
Form AD/AF AD/AF AD/AF AD/AF AD/AF AD/AF AD/AF AD/AF
Suitable for thread G M5 M6 M8 x 1 M10 x 1 M10 x 1 M12 x 1 M12 x 1 M16 x 1
Concentricity tolerance
(mm) 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003
Coolant supply Internal axial/ Internal axial/ Internal axial/ Internal axial/ Internal axial/ Internal axial/ Internal axial/ Internal axial/
internal radial internal radial internal radial internal radial internal radial internal radial internal radial internal radial
Balancing quality G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25
120
114
118
116
108
112
106
110
Ident. No.
23424... Unit price, € O. R. O. R. O. R. O. R. O. R. O. R. O. R. O. R.
Tool holding device SK 40 SK 40 SK 40 SK 40 SK 40 SK 40 SK 40 SK 40
ISO 7388-1 7388-1 7388-1 7388-1 7388-1 7388-1 7388-1 7388-1
Clamping Ø d (mm) 25 32 3 4 5 6 8 10
Tapered Ø d2 (mm) 44 44 10 15 15 21 21 24
Outer Ø D (mm) 53 53 20 22 22 27 27 32
Projection length A (mm) 120 120 160 160 160 160 160 160
Clamping depth L2 (mm) 58 62 - - - 36 36 41
Form AD/AF AD/AF AD/AF AD/AF AD/AF AD/AF AD/AF AD/AF
Suitable for thread G M16 x 1 M16 x 1 - - - M5 M6 M8 x 1
Concentricity tolerance 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003
(mm)
Coolant supply Internal axial/ Internal axial/ Internal axial/ Internal axial/ Internal axial/ Internal axial/ Internal axial/ Internal axial/
internal radial internal radial internal radial internal radial internal radial internal radial internal radial internal radial
Balancing quality G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25
208
210
203
205
125
204
Ident. No.
132
206
23424... Unit price, € O. R. (O. R.) (O. R.) (O. R.) (O. R.) O. R. O. R. O. R.
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