500 Million Cycles: How UVT Tests Non-Standard Ball Splines Under Real Working Conditions

Answer: UVT's 4 mm non-standard ball spline achieved 500 million reciprocations under severe conditions - but a life number is only meaningful with its duty cycle (load, speed, acceleration, stroke, frequency). UVT publishes durability results with working conditions and validates non-standard splines with duty-cycle testing before mass production.

Why "500 million cycles" is meaningless without duty cycle

Life is a function of load, speed, acceleration, stroke and frequency. A component that survives 500 million cycles at low speed may fail early at high acceleration or with a different stroke. This is why UVT evaluates life with the actual duty cycle of each application, not a single isolated number.

What we test for non-standard splines

Non-standard customization program

UVT's UNS program covers custom shaft diameter and length, stroke, flange interfaces, special materials (stainless steel) and surface treatments (PVD, DLC, black oxide, anti-rust). Prototype delivery in 2-3 weeks with working-condition testing before mass production.

For clean-room environments

Semiconductor lines are dust-sensitive. UVT recommends stainless steel shafts without anti-rust oil, and PVD/DLC treatments that reduce friction particles and improve wear resistance in high-cycle machines.

Send your drawings and working conditions to UVT - we will confirm feasibility, expected life under your duty cycle, and lead time.