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

Tool holding device SK 40 SK 40 SK 40 SK 40 SK 40 SK 40 SK 40 SK 40
Version Short Short Short Short Short Long Long Long
Arbour Ø d1 (mm) 16 22 27 32 40 22 27 32
Arbour length L1 (mm) 17 19 21 24 27 19 21 24
Outer Ø D (mm) 38 48 58 78 88 48 58 78
Projection length A (mm) 35 35 40 50 50 100 100 100
Coolant supply Internal axial Internal axial Internal axial Internal axial Internal axial Internal axial Internal axial Internal axial
Surface Nickel-plated Nickel-plated Nickel-plated Nickel-plated Nickel-plated Nickel-plated Nickel-plated Nickel-plated
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
322
323
312
313
314
311
321
315
Ident. No.
23150... Unit price, € O. R. O. R. O. R. O. R. O. R. O. R. O. R. O. R.
Tool holding device SK 40
Version Long
Arbour Ø d1 (mm) 40
Arbour length L1 (mm) 27
Outer Ø D (mm) 88
Clamping Technology
Projection length A (mm) 100
Coolant supply Internal axial
Surface Nickel-plated
Balancing quality G 2.5 at 25
Ident. No.
324
23150... Unit price, € O. R.
Prod. group 263
Insert sleeves for Morse taper ISO 7388-1
AD A
G 2,5
IK 25000 rpm
40
Application: ƒ Shank version DIN 69871
For mounting tools with Morse taper and flat tangs. ƒ Precision-ground D
Execution: ƒ Requisite pull studs, no. 23690
ƒ Case-hardened Notes:
ƒ Surface nickel-plated to protect against corrosion Type ADB on request.
and dirt
Tool holding device SK 40 SK 40 SK 40 SK 40 SK 40 SK 40 SK 40
Version Short Short Short Short Long Long Long
Morse taper size MK 1 MK 2 MK 3 MK 4 MK 2 MK 3 MK 4
Outer Ø D (mm) 25 32 40 48 32 40 48
Form AD AD AD AD AD AD AD
Projection length A (mm) 50 50 70 95 117 133 156
Coolant supply Internal axial Internal axial Internal axial Internal axial Internal axial Internal axial Internal axial
Surface Nickel-plated Nickel-plated Nickel-plated Nickel-plated Nickel-plated Nickel-plated Nickel-plated
Concentricity tolerance (mm) 0.008 0.008 0.008 0.008 0.008 0.008 0.008
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
Ident. No.
313
322
312
310
323
321
23080... Unit price, € O. R. 311 O. R. O. R. O. R. O. R. O. R.
O. R.
Prod. group 263
HYDRO expansion chucks
Easy tool change in a matter of seconds: ƒ Max. rotation speed 40,000 rpm (precision
Clamping with a HYDRO expansion chuck balancing recommended!)
enables you to clamp and release tools within ƒ Optimum temperature of use 20–50°C (higher 1
seconds. Axial length adjustment ensures a temperatures on request) 2
high degree of repeatability. Special sealing ƒ Axial length adjustment range approx. 10 mm 3
elements ensure absolute tightness and a high ƒ Tool clamping damps vibrations due to hydraulic
chuck service life. The chamber system filled oil-filled chamber system
with hydraulic oil ensures safe and low-vibra- ƒ Function:
tion clamping. This increases tool service life ƒ Using the hexagon key ①, the clamping screw 4
by a maximum of 4 times. Tools of various ② is screwed in as far as it will go. The pressure 5
diameters can be clamped in a holder by using pin ③ forces the hydraulic oil into the expansion
reducing sleeves. chamber ④. The pressure thus created causes an
Technical data: even deformation of the expansion sleeve ⑤. The
ƒ Concentricity tolerance < 0.003 mm tool shaft is thus clamped precisely, powerfully
and centrally.
ƒ Transferred torques: (during direct clamping)
Ø mm 6 8 10 12 14 16 18 20 25 32
Torque Nm 20 35 45 80 100 130 180 210 350 450

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