TBI MOTION STKR (XSIR) Ball Screw Flange Nut

STKR (also designated XSIR) is a compact ball screw flange nut with a two-flat flange, seals on both ends and an M6 oil hole.

Key features

It is offered for 16, 20 and 25 mm screws with 5 mm lead and for 25 mm with 10 mm lead
Its short body suits compact slide units and factory automation axes

Specifications

Oil hole	M6x1P

STKR1605-20		Alternate designation: XSIR1605-20 \| Nominal screw diameter: 16 mm \| Lead: 5 mm \| Ball diameter: 3.175 mm \| Circuits: 3x1 \| Nut OD D (h7): 34 mm \| Flange OD D1: 54 mm \| Nut length L: 43 mm \| Flange thickness L1: 10 mm \| Flange width W: 40 mm \| Bolt PCD: 44 mm \| Mounting hole: 4.5 mm \| Oil hole: M6x1P \| Dynamic load rating Ca: 780 kgf \| Static load rating C0a: 1371 kgf \| Stiffness: 5 kgf/um
STKR2005-15		Alternate designation: XSIR2005-15 \| Nominal screw diameter: 20 mm \| Lead: 5 mm \| Ball diameter: 3.175 mm \| Circuits: 3x1 \| Nut OD D (h7): 40 mm \| Flange OD D1: 60 mm \| Nut length L: 43 mm \| Flange thickness L1: 10 mm \| Flange width W: 46 mm \| Bolt PCD: 50 mm \| Mounting hole: 4.5 mm \| Oil hole: M6x1P \| Dynamic load rating Ca: 795 kgf \| Static load rating C0a: 1741 kgf \| Stiffness: 9 kgf/um
STKR2505-21		Alternate designation: XSIR2505-21 \| Nominal screw diameter: 25 mm \| Lead: 5 mm \| Ball diameter: 3.175 mm \| Circuits: 3x1 \| Nut OD D (h7): 43 mm \| Flange OD D1: 67 mm \| Nut length L: 44 mm \| Flange thickness L1: 10 mm \| Flange width W: 50 mm \| Bolt PCD: 55 mm \| Mounting hole: 5.5 mm \| Oil hole: M6x1P \| Dynamic load rating Ca: 885 kgf \| Static load rating C0a: 2203 kgf \| Stiffness: 14 kgf/um
STKR2510-02		Alternate designation: XSIR2510-02 \| Nominal screw diameter: 25 mm \| Lead: 10 mm \| Ball diameter: 4.762 mm \| Circuits: 6x1 \| Nut OD D (h7): 60 mm \| Flange OD D1: 96 mm \| Nut length L: 102 mm \| Flange thickness L1: 15 mm \| Flange width W: 72 mm \| Bolt PCD: 78 mm \| Mounting hole: 9 mm \| Oil hole: M6x1P \| Dynamic load rating Ca: 2750 kgf \| Static load rating C0a: 6556 kgf \| Stiffness: 13 kgf/um

Ball ScrewsTBI MOTION

4 product codes available in this family

Sourced direct from KoreaExport-ready supplyCompetitive pricing

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TBI MOTION STKR (XSIR) Ball Screw Flange Nut

Brand TBI MOTION·Ball Screws

Available part numbers (4)

STKR1605-20, STKR2005-15, STKR2505-21, STKR2510-02

How to order

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Product codes & specifications

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RFQ List (0)

	Product code	Spec
	STKR1605-20	Alternate designation: XSIR1605-20 \| Nominal screw diameter: 16 mm \| Lead: 5 mm \| Ball diameter: 3.175 mm \| Circuits: 3x1 \| Nut OD D (h7): 34 mm \| Flange OD D1: 54 mm \| Nut length L: 43 mm \| Flange thickness L1: 10 mm \| Flange width W: 40 mm \| Bolt PCD: 44 mm \| Mounting hole: 4.5 mm \| Oil hole: M6x1P \| Dynamic load rating Ca: 780 kgf \| Static load rating C0a: 1371 kgf \| Stiffness: 5 kgf/um
	STKR2005-15	Alternate designation: XSIR2005-15 \| Nominal screw diameter: 20 mm \| Lead: 5 mm \| Ball diameter: 3.175 mm \| Circuits: 3x1 \| Nut OD D (h7): 40 mm \| Flange OD D1: 60 mm \| Nut length L: 43 mm \| Flange thickness L1: 10 mm \| Flange width W: 46 mm \| Bolt PCD: 50 mm \| Mounting hole: 4.5 mm \| Oil hole: M6x1P \| Dynamic load rating Ca: 795 kgf \| Static load rating C0a: 1741 kgf \| Stiffness: 9 kgf/um
	STKR2505-21	Alternate designation: XSIR2505-21 \| Nominal screw diameter: 25 mm \| Lead: 5 mm \| Ball diameter: 3.175 mm \| Circuits: 3x1 \| Nut OD D (h7): 43 mm \| Flange OD D1: 67 mm \| Nut length L: 44 mm \| Flange thickness L1: 10 mm \| Flange width W: 50 mm \| Bolt PCD: 55 mm \| Mounting hole: 5.5 mm \| Oil hole: M6x1P \| Dynamic load rating Ca: 885 kgf \| Static load rating C0a: 2203 kgf \| Stiffness: 14 kgf/um
	STKR2510-02	Alternate designation: XSIR2510-02 \| Nominal screw diameter: 25 mm \| Lead: 10 mm \| Ball diameter: 4.762 mm \| Circuits: 6x1 \| Nut OD D (h7): 60 mm \| Flange OD D1: 96 mm \| Nut length L: 102 mm \| Flange thickness L1: 15 mm \| Flange width W: 72 mm \| Bolt PCD: 78 mm \| Mounting hole: 9 mm \| Oil hole: M6x1P \| Dynamic load rating Ca: 2750 kgf \| Static load rating C0a: 6556 kgf \| Stiffness: 13 kgf/um

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TBI MOTION STKR (XSIR) Ball Screw Flange Nut