TPC Mechatronics ROFNU Series Offset Preload Ball Screw Nut (NU-Type, Flanged)

The ROFNU Series is a precision ball screw nut line from TPC Mechatronics: NU-type flanged nut with offset (lead-shift) preload in a single nut body, shaft diameters 16-50 mm.

Key features

Ball screws convert rotary motion into linear motion with high efficiency, reversibility and high positioning precision
Internal ball circulation keeps the nut outer diameter small
Shafts are available ground or rolled in accuracy grades C0 to C10 with selectable axial clearance/preload (P0-P4) and surface treatments
The table lists ball diameter, root diameter, basic dynamic and static load ratings, rigidity and main nut dimensions for each model

Specifications

Circuits	8×1
Thread direction	Right

ROFNUR1605-4		Shaft dia. d: 16 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1381 kgf \| Static load Coa: 3055 kgf \| Rigidity K: 45 kgf/μm \| Nut dia. D: 28 mm \| Flange dia. A: 48 mm \| Nut length L: 75 mm \| Circuits: 8×1 \| Thread direction: Right
ROFNUR2005-4		Shaft dia. d: 20 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1552 kgf \| Static load Coa: 3879 kgf \| Rigidity K: 52 kgf/μm \| Nut dia. D: 36 mm \| Flange dia. A: 58 mm \| Nut length L: 85 mm \| Circuits: 8×1 \| Thread direction: Right
ROFNUR2505-4		Shaft dia. d: 25 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1726 kgf \| Static load Coa: 4909 kgf \| Rigidity K: 61 kgf/μm \| Nut dia. D: 40 mm \| Flange dia. A: 62 mm \| Nut length L: 86 mm \| Circuits: 8×1 \| Thread direction: Right
ROFNUR2510-4		Shaft dia. d: 25 mm \| Lead: 10 mm \| Ball dia.: 4.762 mm \| Dynamic load Ca: 2957 kgf \| Static load Coa: 7302 kgf \| Rigidity K: 69 kgf/μm \| Nut dia. D: 40 mm \| Flange dia. A: 62 mm \| Nut length L: 130 mm \| Circuits: 8×1 \| Thread direction: Right
ROFNUR3205-4		Shaft dia. d: 32 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1924 kgf \| Static load Coa: 6350 kgf \| Rigidity K: 71 kgf/μm \| Nut dia. D: 50 mm \| Flange dia. A: 80 mm \| Nut length L: 87 mm \| Circuits: 8×1 \| Thread direction: Right
ROFNUR3210-4		Shaft dia. d: 32 mm \| Lead: 10 mm \| Ball dia.: 6.35 mm \| Dynamic load Ca: 4810 kgf \| Static load Coa: 12220 kgf \| Rigidity K: 85 kgf/μm \| Nut dia. D: 50 mm \| Flange dia. A: 80 mm \| Nut length L: 145 mm \| Circuits: 8×1 \| Thread direction: Right
ROFNUR4005-4		Shaft dia. d: 40 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 2112 kgf \| Static load Coa: 7996 kgf \| Rigidity K: 82 kgf/μm \| Nut dia. D: 63 mm \| Flange dia. A: 93 mm \| Nut length L: 90 mm \| Circuits: 8×1 \| Thread direction: Right
ROFNUR4010-4		Shaft dia. d: 40 mm \| Lead: 10 mm \| Ball dia.: 6.35 mm \| Dynamic load Ca: 5405 kgf \| Static load Coa: 15516 kgf \| Rigidity K: 98 kgf/μm \| Nut dia. D: 63 mm \| Flange dia. A: 93 mm \| Nut length L: 148 mm \| Circuits: 8×1 \| Thread direction: Right
ROFNUR5010-4		Shaft dia. d: 50 mm \| Lead: 10 mm \| Ball dia.: 6.35 mm \| Dynamic load Ca: 6010 kgf \| Static load Coa: 19634 kgf \| Rigidity K: 113 kgf/μm \| Nut dia. D: 75 mm \| Flange dia. A: 110 mm \| Nut length L: 148 mm \| Circuits: 8×1 \| Thread direction: Right

Ball ScrewsTPC Mechatronics

9 product codes available in this family

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TPC Mechatronics ROFNU Series Offset Preload Ball Screw Nut (NU-Type, Flanged)

Brand TPC Mechatronics·Ball Screws

Available part numbers (9)

ROFNUR1605-4, ROFNUR2005-4, ROFNUR2505-4, ROFNUR2510-4, ROFNUR3205-4, ROFNUR3210-4, ROFNUR4005-4, ROFNUR4010-4, ROFNUR5010-4

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Product codes & specifications

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	Product code	Spec
	ROFNUR1605-4	Shaft dia. d: 16 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1381 kgf \| Static load Coa: 3055 kgf \| Rigidity K: 45 kgf/μm \| Nut dia. D: 28 mm \| Flange dia. A: 48 mm \| Nut length L: 75 mm \| Circuits: 8×1 \| Thread direction: Right
	ROFNUR2005-4	Shaft dia. d: 20 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1552 kgf \| Static load Coa: 3879 kgf \| Rigidity K: 52 kgf/μm \| Nut dia. D: 36 mm \| Flange dia. A: 58 mm \| Nut length L: 85 mm \| Circuits: 8×1 \| Thread direction: Right
	ROFNUR2505-4	Shaft dia. d: 25 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1726 kgf \| Static load Coa: 4909 kgf \| Rigidity K: 61 kgf/μm \| Nut dia. D: 40 mm \| Flange dia. A: 62 mm \| Nut length L: 86 mm \| Circuits: 8×1 \| Thread direction: Right
	ROFNUR2510-4	Shaft dia. d: 25 mm \| Lead: 10 mm \| Ball dia.: 4.762 mm \| Dynamic load Ca: 2957 kgf \| Static load Coa: 7302 kgf \| Rigidity K: 69 kgf/μm \| Nut dia. D: 40 mm \| Flange dia. A: 62 mm \| Nut length L: 130 mm \| Circuits: 8×1 \| Thread direction: Right
	ROFNUR3205-4	Shaft dia. d: 32 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1924 kgf \| Static load Coa: 6350 kgf \| Rigidity K: 71 kgf/μm \| Nut dia. D: 50 mm \| Flange dia. A: 80 mm \| Nut length L: 87 mm \| Circuits: 8×1 \| Thread direction: Right
	ROFNUR3210-4	Shaft dia. d: 32 mm \| Lead: 10 mm \| Ball dia.: 6.35 mm \| Dynamic load Ca: 4810 kgf \| Static load Coa: 12220 kgf \| Rigidity K: 85 kgf/μm \| Nut dia. D: 50 mm \| Flange dia. A: 80 mm \| Nut length L: 145 mm \| Circuits: 8×1 \| Thread direction: Right
	ROFNUR4005-4	Shaft dia. d: 40 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 2112 kgf \| Static load Coa: 7996 kgf \| Rigidity K: 82 kgf/μm \| Nut dia. D: 63 mm \| Flange dia. A: 93 mm \| Nut length L: 90 mm \| Circuits: 8×1 \| Thread direction: Right
	ROFNUR4010-4	Shaft dia. d: 40 mm \| Lead: 10 mm \| Ball dia.: 6.35 mm \| Dynamic load Ca: 5405 kgf \| Static load Coa: 15516 kgf \| Rigidity K: 98 kgf/μm \| Nut dia. D: 63 mm \| Flange dia. A: 93 mm \| Nut length L: 148 mm \| Circuits: 8×1 \| Thread direction: Right
	ROFNUR5010-4	Shaft dia. d: 50 mm \| Lead: 10 mm \| Ball dia.: 6.35 mm \| Dynamic load Ca: 6010 kgf \| Static load Coa: 19634 kgf \| Rigidity K: 113 kgf/μm \| Nut dia. D: 75 mm \| Flange dia. A: 110 mm \| Nut length L: 148 mm \| Circuits: 8×1 \| Thread direction: Right

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TPC Mechatronics ROFNU Series Offset Preload Ball Screw Nut (NU-Type, Flanged)