TBI Motion SCI/SCNI precision ground ball screw series covers shaft diameters Ø16-80 mm with leads 4-10 mm; dynamic load rating up to 7346 kgf, static up to 31953 kgf and axial stiffness up to 109 kgf/μm; SCNI uses longer nuts for higher load capacity with dual-circuit recirculation for smooth running - built for machine tools, injection molding and heavy robot axes.
COMPONENT
TBI Motion BSH precision ground ball screw series: shaft diameters Ø8-25 mm with leads 2-10 mm; dynamic load rating up to 2954 kgf, static up to 7295 kgf and axial stiffness up to 41 kgf/μm; external circulation for Ø12 and below, internal circulation for Ø14 and above giving compact, quiet nuts - suited to machine-tool axes, robot travel axes and automation.
TBI Motion (Taiwan) SFK is a precision ground miniature ball screw series: shaft diameters Ø4-25 mm with leads 1-5 mm including ultra-small Ø4/Ø6 sizes; dynamic load rating up to 957 kgf, static up to 2381 kgf, axial stiffness up to 48 kgf/μm and nut ODs from only Ø10 mm, with left-hand helix options on selected sizes - compact and precise for small robot joints, semiconductor and medical equipment.
The SFV is TBI Motion's (Taiwan) external-circulation heavy-load ball screw series: smooth external ball recirculation and a patented high-load nut deliver high rigidity and high capacity, with an economical design suited to volume production and large diameter/lead applications. The range spans Ø12–Ø80 mm shafts and 4–25 mm leads across 82 models; representative SFV03208-4.8 rates Ca 3962 kgf dynamic / C0a 11547 kgf static, with axial stiffness 18–74 kgf/μm over the Ø12–Ø32 range.
