TPC Mechatronics RSMA Series Threaded-Mount Ball Screw Nut (Without Flange)

The RSMA Series is a precision ball screw nut line from TPC Mechatronics: Compact flangeless nut with an external mounting thread, shaft diameters 12-16 mm.

Key features

Ball screws convert rotary motion into linear motion with high efficiency, reversibility and high positioning precision
End-cap ball circulation allows compact nuts and smooth high-speed travel
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

Thread direction	Right

RSMAR1205-2.8		Shaft dia. d: 12 mm \| Lead: 5 mm \| Ball dia.: 2.5 mm \| Dynamic load Ca: 487 kgf \| Static load Coa: 886 kgf \| Rigidity K: 14 kgf/μm \| Nut dia. D: 25.5 mm \| Mounting thread: M20×1 \| Nut length L: 39 mm \| Circuits: 2.8×1 \| Thread direction: Right
RSMAR1210-1.8		Shaft dia. d: 12 mm \| Lead: 10 mm \| Ball dia.: 2.5 mm \| Dynamic load Ca: 323 kgf \| Static load Coa: 556 kgf \| Rigidity K: 8 kgf/μm \| Nut dia. D: 25.5 mm \| Mounting thread: M20×1 \| Nut length L: 39.5 mm \| Circuits: 1.8×1 \| Thread direction: Right
RSMAR1220-1.8		Shaft dia. d: 12 mm \| Lead: 20 mm \| Ball dia.: 2.5 mm \| Dynamic load Ca: 313 kgf \| Static load Coa: 578 kgf \| Rigidity K: 8 kgf/μm \| Nut dia. D: 25.5 mm \| Mounting thread: M20×1 \| Nut length L: 58 mm \| Circuits: 1.8×1 \| Thread direction: Right
RSMAR1605-3.8		Shaft dia. d: 14.8 mm \| Lead: 5 mm \| Ball dia.: 2.778 mm \| Dynamic load Ca: 821 kgf \| Static load Coa: 1706 kgf \| Rigidity K: 22 kgf/μm \| Nut dia. D: 32.5 mm \| Mounting thread: M26×1.5 \| Nut length L: 42 mm \| Circuits: 3.8×1 \| Thread direction: Right
RSMAR1610-2.8		Shaft dia. d: 14.8 mm \| Lead: 10 mm \| Ball dia.: 2.778 mm \| Dynamic load Ca: 643 kgf \| Static load Coa: 1311 kgf \| Rigidity K: 17 kgf/μm \| Nut dia. D: 32.5 mm \| Mounting thread: M26×1.5 \| Nut length L: 52 mm \| Circuits: 2.8×1 \| Thread direction: Right
RSMAR1620-1.8		Shaft dia. d: 14.8 mm \| Lead: 20 mm \| Ball dia.: 2.778 mm \| Dynamic load Ca: 424 kgf \| Static load Coa: 841 kgf \| Rigidity K: 10 kgf/μm \| Nut dia. D: 32.5 mm \| Mounting thread: M26×1.5 \| Nut length L: 62 mm \| Circuits: 1.8×1 \| Thread direction: Right

Ball ScrewsTPC Mechatronics

6 product codes available in this family

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TPC Mechatronics RSMA Series Threaded-Mount Ball Screw Nut (Without Flange)

Brand TPC Mechatronics·Ball Screws

Available part numbers (6)

RSMAR1205-2.8, RSMAR1210-1.8, RSMAR1220-1.8, RSMAR1605-3.8, RSMAR1610-2.8, RSMAR1620-1.8

How to order

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Product codes & specifications

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	Product code	Spec
	RSMAR1205-2.8	Shaft dia. d: 12 mm \| Lead: 5 mm \| Ball dia.: 2.5 mm \| Dynamic load Ca: 487 kgf \| Static load Coa: 886 kgf \| Rigidity K: 14 kgf/μm \| Nut dia. D: 25.5 mm \| Mounting thread: M20×1 \| Nut length L: 39 mm \| Circuits: 2.8×1 \| Thread direction: Right
	RSMAR1210-1.8	Shaft dia. d: 12 mm \| Lead: 10 mm \| Ball dia.: 2.5 mm \| Dynamic load Ca: 323 kgf \| Static load Coa: 556 kgf \| Rigidity K: 8 kgf/μm \| Nut dia. D: 25.5 mm \| Mounting thread: M20×1 \| Nut length L: 39.5 mm \| Circuits: 1.8×1 \| Thread direction: Right
	RSMAR1220-1.8	Shaft dia. d: 12 mm \| Lead: 20 mm \| Ball dia.: 2.5 mm \| Dynamic load Ca: 313 kgf \| Static load Coa: 578 kgf \| Rigidity K: 8 kgf/μm \| Nut dia. D: 25.5 mm \| Mounting thread: M20×1 \| Nut length L: 58 mm \| Circuits: 1.8×1 \| Thread direction: Right
	RSMAR1605-3.8	Shaft dia. d: 14.8 mm \| Lead: 5 mm \| Ball dia.: 2.778 mm \| Dynamic load Ca: 821 kgf \| Static load Coa: 1706 kgf \| Rigidity K: 22 kgf/μm \| Nut dia. D: 32.5 mm \| Mounting thread: M26×1.5 \| Nut length L: 42 mm \| Circuits: 3.8×1 \| Thread direction: Right
	RSMAR1610-2.8	Shaft dia. d: 14.8 mm \| Lead: 10 mm \| Ball dia.: 2.778 mm \| Dynamic load Ca: 643 kgf \| Static load Coa: 1311 kgf \| Rigidity K: 17 kgf/μm \| Nut dia. D: 32.5 mm \| Mounting thread: M26×1.5 \| Nut length L: 52 mm \| Circuits: 2.8×1 \| Thread direction: Right
	RSMAR1620-1.8	Shaft dia. d: 14.8 mm \| Lead: 20 mm \| Ball dia.: 2.778 mm \| Dynamic load Ca: 424 kgf \| Static load Coa: 841 kgf \| Rigidity K: 10 kgf/μm \| Nut dia. D: 32.5 mm \| Mounting thread: M26×1.5 \| Nut length L: 62 mm \| Circuits: 1.8×1 \| Thread direction: Right

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TPC Mechatronics RSMA Series Threaded-Mount Ball Screw Nut (Without Flange)