SK (ISO) Slim Shrink Fit Holders – SK30, SK40 and SK50 (DIN 69871)

A slim shrink fit holder is a slim-nose shrink fit holder for h6 carbide tools in deep cavities. PTP makes them with an SK (ISO) shank (DIN 69871 / ISO 7388-1) in SK30, SK40 and SK50: bores Ø6–20 mm, gauge lengths 80–100 mm, 24 ordering codes in all. They are pulled into the spindle by DIN 69872 pull studs: M12 on SK30, M16 on SK40 and M24 on SK50. Taper AT3 or better, TIR 0.005 mm max, balanced G2.5 @ 25,000 rpm.

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Slim Shrink Fit Holders, SK (ISO) shank: technical drawing with dimensions — Slim Shrink Fit Holders with a SK (ISO) shank, from the PTP catalogue. Click to open it full size.

All 24 SK (ISO) slim shrink fit holders

One table per taper size. Every ordering code opens its own page with its dimensions (mm).

SK30 slim shrink fit holders: 8 ordering codes

Ordering code	Bore Ø (d)	Gauge Length (GPL)	D1	C	Screw Thread (G)	L
47ISO30SFS0680	6 mm	80 mm	12 mm	18 mm	M5	36 mm
47ISO30SFS0880	8 mm	80 mm	14 mm	20 mm	M6	36 mm
47ISO30SFS1080	10 mm	80 mm	16 mm	22 mm	M8	42 mm
47ISO30SFS1280	12 mm	80 mm	18 mm	24 mm	M10	47 mm
47ISO30SFS1480	14 mm	80 mm	20 mm	26 mm	M10	47 mm
47ISO30SFS1680	16 mm	80 mm	22 mm	28 mm	M12	50 mm
47ISO30SFS1880	18 mm	80 mm	24 mm	30 mm	M12	50 mm
47ISO30SFS2080	20 mm	80 mm	28 mm	36 mm	M16	52 mm

SK40 slim shrink fit holders: 8 ordering codes

Ordering code	Bore Ø (d)	Gauge Length (GPL)	D1	C	Screw Thread (G)	L
47ISO40SFS0690	6 mm	90 mm	12 mm	18 mm	M5	36 mm
47ISO40SFS0890	8 mm	90 mm	14 mm	20 mm	M6	36 mm
47ISO40SFS1090	10 mm	90 mm	16 mm	22 mm	M8	42 mm
47ISO40SFS1290	12 mm	90 mm	18 mm	24 mm	M10	47 mm
47ISO40SFS1490	14 mm	90 mm	20 mm	26 mm	M10	47 mm
47ISO40SFS1690	16 mm	90 mm	22 mm	28 mm	M12	50 mm
47ISO40SFS1890	18 mm	90 mm	24 mm	30 mm	M12	50 mm
47ISO40SFS2090	20 mm	90 mm	28 mm	36 mm	M16	52 mm

SK50 slim shrink fit holders: 8 ordering codes

Ordering code	Bore Ø (d)	Gauge Length (GPL)	D1	C	Screw Thread (G)	L
47ISO50SFS06100	6 mm	100 mm	12 mm	18 mm	M5	36 mm
47ISO50SFS08100	8 mm	100 mm	14 mm	20 mm	M6	36 mm
47ISO50SFS10100	10 mm	100 mm	16 mm	22 mm	M8	42 mm
47ISO50SFS12100	12 mm	100 mm	18 mm	24 mm	M10	47 mm
47ISO50SFS14100	14 mm	100 mm	20 mm	26 mm	M10	47 mm
47ISO50SFS16100	16 mm	100 mm	22 mm	28 mm	M12	50 mm
47ISO50SFS18100	18 mm	100 mm	24 mm	30 mm	M12	50 mm
47ISO50SFS20100	20 mm	100 mm	28 mm	36 mm	M16	52 mm

Questions about SK (ISO) slim shrink fit holders

Which pull stud does an SK slim shrink fit holder take?

The pull stud of its taper size: M12 on SK30, M16 on SK40 and M24 on SK50. Use a DIN 69872 pull stud with a 15° head.

SK30 pull studs SK40 pull studs SK50 pull studs

What goes with an SK slim shrink fit holder?

A heat shrink machine, to load and unload the h6 carbide tool shank.