
UNS Series is UVT's non-standard ball spline program, covering custom dimensions and configurations beyond standard catalogs. UVT specializes in tailor-made ball splines - custom shaft diameters, strokes, flange interfaces, materials and surface treatments - for unique machine designs and upgrade projects.
Key features:
Custom shaft diameter, length and stroke per your design
Custom flange type and mounting interface
Special materials including stainless steel for clean-room use
Surface treatments: PVD, DLC, black oxide, anti-rust
Rapid prototyping with 2-3 weeks prototype delivery
Typical applications: equipment upgrades, space-constrained designs, high-cycle production machines and special environment applications (clean-room, corrosion, vacuum).
Send your drawings and working conditions - UVT engineers will confirm feasibility and lead time quickly.

Tell us your load, speed, stroke and environment - we reply within 1 business day with spec, lead time and a free sample plan.
Request Spec & Sample Plan