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ATORN chuck for solid drill bits SK50 (ISO 7388-1) dia. 20 mm A=70 mm

ATORN chuck for solid drill bits SK50 (ISO 7388-1) dia. 20 mm A=70 mm

ATORN chuck for solid drill bits SK50 (ISO 7388-1) dia. 20 mm A=70 mm
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Item no: 1021639 205 

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Available in 8-10 working days.

Application
This chuck is used to clamp indexable insert solid drill bits that are fixed with two screws, similar to a surface chuck.

Execution
  • Alloyed case-hardening steel, core tensile strength at least 950 N/mm²
  • Case-hardened HRc 60 ± 2 (HV 700 ± 50), hardness depth 0.8 mm ± 0.2 mm
  • Taper angle tolerance quality < AT3 in accordance with DIN 7187 and DIN 2080
  • Max. concentricity < 0.005 mm
  • Functional surfaces precision-ground, all other surfaces black-oxide
  • With Balluff chip hole

Delivery
1x SK40 or SK50 solid drill chuck (ISO 7388-1)

Notes
The previous standard DIN 69871-1 was superseded by ISO 7388-1.

Brand: ATORN
Tool holding device: SK 50
Form: AD
Clamping diameter (d1): 20 mm
Outer diameter (D): 40 mm
Projecting length (A): 70 mm
Coolant supply: Internal axial
Clearance length to collar (L1): 51 mm
Clamp in depth (T): 61 mm
Balancing quality: G 2.5 at 25,000 rpm

ATORN-No.: 22661017

EAN no.: 4050293714326

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