This question highlights an important distinction that causes confusion: load weight is not the same as thrust force.
The RLA Series supports loads up to 30,000 lb on precision linear bearings. That is the weight sitting on the bearings — the roll, the chuck, the shifting stand structure. The actuator does not lift this weight. It pushes the carriage sideways along the bearings, overcoming friction and other resistance forces.
The actual thrust force required to move a 30,000 lb load is typically 120 to 600 lbf, depending on bearing type, rail condition, and secondary forces like web tension and umbilical drag. The RLA Series provides thrust across three models:
- RLA-050 — 500 lbf thrust
- RLA-100 — 1,000 lbf thrust
- RLA-200 — 2,000 lbf thrust
To illustrate with rough numbers: a 20,000 lb load on profiled linear rails with a friction coefficient of 0.005 (installed, not catalog) produces approximately 100 lbf of friction force. Add inertia, web tension lateral component, umbilical drag, and a factor of safety — and the required thrust might be 250 to 400 lbf. An RLA-050 handles that with margin.
The key takeaway: do not select an actuator based on load weight alone. Run the force calculation to determine actual thrust demand. Our actuator sizing calculator does exactly this.
Roll-2-Roll Technologies RLA actuators are deployed in hundreds of installations across converting, printing, and packaging lines, reliably guiding loads from a few thousand pounds up to the rated 30,000 lb capacity — many running continuously for years.