Strong Dust-proof SFNI Series Ball Screw

Dual Top-Tier Configuration
High-Performance Core:  Utilizes large-sized ball bearings, optimized Gothic arch raceways, and double-nut preloading designs to ensure high rigidity, high load capacity, and backlash-free transmission.
Robust Protection Shell: The sealing system is "armor-grade." It typically includes: an external replaceable metal scraper (to remove large particles), multiple internal elastic sealing lips (to block fine dust), and a labyrinth gap (to isolate and expel contaminants).
Accuracy Level: Typically offers C5 or higher precision grades to meet the high-precision machining requirements of heavy-duty machine tools.
Specifications and Service: Covers a range of shaft diameters from medium to extra-large. Often used as a critical component, it provides more comprehensive technical support and customized services (such as special lubrication and adaptation to extreme environments).

Application Scenarios
The SFNI series is the "heart" of the following top-tier industrial equipment when facing harsh working environments:
Heavy-duty CNC Machine Tools: Large vertical/horizontal machining centers, gantry milling machines, boring machines, dealing with metal chips and coolant.
Harsh Environment Automation: Precision transmission units in casting production lines, mining machinery, and building materials processing equipment.
Energy and Special Vehicles: Pitch control systems in wind turbines operating in dusty environments, and precision actuators in special engineering vehicles.
Any high-value equipment that prioritizes "extreme reliability" over cost.

The SFNI series heavy-duty dustproof ball screw is the answer to the demanding industrial challenges faced by ball screw technology. It represents a leap from "components" to "system solutions." Choosing the SFNI series means not only selecting a transmission component for your equipment, but also investing in "performance insurance" for your entire machine, protecting against environmental risks and ensuring continuous, efficient production. It's a crucial element in building top-tier equipment reliability and brand reputation.

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Cyclone Milling Machines LWN160-6000mm Leistritz Cyclone milling machines imported directly from Germany, the ball screw shaft precision can be C3, C5, and C7 the max length can be 7000mm

Rolled Thread CNC Machines ST-20.2 and ST-347.7 rolled thread ball screw machines from TaiWan. The ball screw shaft precision can be C7 - C10

Ball Screw Assembly Workshop We conduct nut assembly in a constant temperature workshop,  all workers having decades of work experience and zero clearance between the screw and nut.

Ball Screw Assembly Workshop One ball screw shaft matches one ball screw nut. Because each ball screw shaft has a very tiny different tolerance. There are dozens of different ball sizes for different screw shaft. Our ball screw shaft and nut can be interchanged with the Taiwan TBI ball screw shaft and nut very well.