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Tool clamp \ Tool chucks ISO 7388-1 SK 40/50

CNC precision short drill chuck ( ISO 7388-1 )
With spur gear mechanism

SK Form Form G 6,3 ISO
40 AD A IK R/ L 25000 rpm 7388-1
Application:  With worm gear mechanism
Ident. No. 540: For use on machining centres and CNC milling machines with  Type A with steep taper, no internal coolant feed
tool change. For drilling, reaming, countersinking and also light milling and
smoothing tasks. Advantage:
Ident. No. 550: For use on machining centres and CNC machines with tool  Ident. No. 540: Remains securely clamped even with sudden spindle stop
changer.  Ident. No. 550: remains securely clamped even with sudden spindle stop
Execution: Delivery:
 Ident. No. 540: Wear parts hardened and polished Ident. No. 540: with hexagon key
 Ident. No. 550: Ident. No. 550: With hexagon key
 100% concentricity check using diff erent test pin diameters at various meas- Notes:
uring points, based on DIN ISO 10888
 Concentricity tolerance ≤ 0.03 mm over entire clamping range The previous standard DIN 69871-1 was replaced by ISO 7388-1.

C D
C D
A
L1 max A
L1 max
Ident. No. 540 Ident. No. 540 Ident. No. 550 Ident. No. 550
Ident. No. 540 Ident. No. 540
Sealing washer ATORN 16 Sealing washer ATORN 16
(Ø 4.2 mm) (Ø 2.05 mm)

Tool holding device Min./max. A (mm) Length, open (mm) D (mm) Coolant supply Concentricity 21329...
clamping width tolerance (mm) Ident. No.
SK 40 0.5-16 mm 90 103 57 Yes 0.020 540
SK 40 0.5-16 mm 90 103 57 No 0.020 550
Prod. Gr. 208
Compatible pull studs no. 23690 130-150 page 766

Source: Hahn+Kolb Werkzeuge GmbH
Technical data subject to change. www.iconridge.com
Availability subject to country specific rules and regulations. 566

0738_EN_2018_KERN[21849908]-s.indd 742 12/17/2018 3:34:21 PM