
Simkawa
NSFS Screw Nut
Buy NSFS screw nuts in bulk at competitive prices. High-precision, durable, and reliable linear motion components ideal for industrial automation, CNC machines, and mechanical systems.
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Structural Features
Compact circular design, flange for easy fixation, precision machining of internal threads, and combination of anti-loosening/anti-rotation and anti-backlash structures are commonly used in high-precision screw drive systems.


simkawa drive system
Structures of NSFS Screw Nut
Contact us by clicking the button below to get the latest quote for NSFS series screw nut system.
simkawa drive system
Structures of NSFS Screw Nut
Contact us by clicking the button below to get the latest quote for NSFS series screw nut system.
Symbol Meaning
High-precision transmission: Internal ball recirculation design achieves low friction, high efficiency, and stable positioning.
High load capacity: Suitable for medium to high load transmission applications.
Preload design: Eliminates backlash, maintaining rigidity and precision.
Diverse structures: NSFUL lead screw nut offers a standard flange type, while NSFNUL offers extended or special flange designs to meet diverse installation requirements.
Widely applicable: Suitable for CNC machine tools, automated production lines, double-nut transmission systems, and mechanical synchronizers.
Matching Ball Screw Model:
1205G 2005G 1210 2010* 1605 1610* 1616 2020G 2510* 2525 * 1620 3210* 3220 3232* 4010 4020 4040* 5020* 5050*
Notes:
#: SCR heavy-duty screw,
*: SSR light-duty silent screw,
G: Both types available.
Fixing Method

Sustain-Sustain

Fixed-Free

Fixed-Sustain

Fixed-Fixed

NSFS Screw Nut Dustproof
When using a ball screw, avoid moisture, cutting fluid, chips, and other foreign matter from entering the raceway. This can lead to reduced accuracy, noise, vibration, and even seizure.
Simkawa nuts are equipped with dust-proof seals at both ends to block some foreign matter. If used in dusty environments such as woodworking or stone processing, additional dust protection devices such as foldable telescopic cloth covers or spiral telescopic tubes should be installed.
End Plug Circulation
End plug lead screw nut ensures smooth and precise linear motion. Steel balls circulate through end deflectors and internal return channels, ideal for high-speed and low-noise applications.
Model | NSFA |
Circulation method | End-plug Circulating |
Nut type | Single Nut |
Features | Silent high-speed series, suitable for high-speed feeding |
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