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Thread-cutting tools
Tapping chucks

Synchronous tapping chuck
for machine tools with synchronous control

AD Form
A
40 50 A63 IK
Application: Execution: Advantage:
For thread cutting on machine tools with synchro- ƒ Pitch errors are compensated for with minimal ƒ Increased tool service life Clamping Technology
nous spindles. With rigidly clamped screw taps, length compensation of 1.0 mm under tension and ƒ Secure clamping in quick-change inserts for ER
pitch errors cause high axial forces that can be 0.2 mm under pressure collet chucks
compensated for by synchronous tapping chucks ƒ Clamping screws to secure against rotation of the
through minimal length compensation under pres- clamped screw tap Notes:
sure and tension. Collets type ER for thread cutting, no. 21575

d D

A
Ident. No. 362 Ident. No. 341–352 Ident. No. 361
Ref. no. 21555 341-362 SK40-SK50 ISO 7388-1 Ref. no. 21555361-362 HSK-A63 DIN 69893-1
Tool holding device SK 40 SK 40 SK 50 SK 50 HSK A63 HSK A63
Used sizes 1 2 1 2 1 2
Outer Ø D (mm) 43 60 43 60 43 60
ISO 7388-1 7388-1 7388-1 7388-1 - -
Suitable for thread M3-M12 M6-M20 M3-M12 M3-M20 M3-M12 M6-M20
DIN - - - - 69893-1 A 69893-1 A
Collet type ER 16 ER 25 ER 16 ER 25 ER 16 ER 25
Form AD AD AD AD A A
Insert Ø d (mm) 20 32 20 32 20 32
Projection length A (mm) 53 90 53 74 64 97
Pressure length compensation (mm) 0.2 0.2 0.2 0.2 0.2 0.2
Tension length compensation (mm) 1 1 1 1 1 1
352
361
351
Ident. No.
342
362
341
21555... Unit price, € O. R. O. R. O. R. (O. R.) O. R. O. R.
Prod. group 225
Synchronous tapping chucks with straight shank
For machine tools with synchronous control
IK
Application: ƒ Clamping screws to secure against rotation of the D d
For thread cutting on machine tools with synchro- clamped screw tap
nous spindles. With rigidly clamped screw taps,
pitch errors cause high axial forces that can be Advantage:
compensated for by synchronous tapping chucks ƒ Secure clamping in quick-change inserts for ER B
through minimal length compensation under pres- collet chucks
sure and tension.
Notes:
Execution: Collets type ER for thread cutting, no. 21575 Ref. no. 21555361-362 straight shank
ƒ Pitch errors are compensated for with minimal
length compensation of 1.0 mm under tension and
0.2 mm under pressure
Tool holding device Cylinder shank Cylinder shank
Used sizes 1 2
Adapter Ø d1 (mm) 25 25
Suitable for thread M3-M12 M6-M20
Pressure length compensation (mm) 0.2 0.2
Tension length compensation (mm) 1 1
Shaft Ø (mm) 25 25
Projection length A (mm) 34 56
Outer Ø D (mm) 43 60
Insert Ø (mm) 20 32
371
372
Ident. No.
21555... Unit price, € O. R. O. R.
Prod. group 225

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