After twenty years,
we're bringing back
steel.
Steel linear guides are returning to the PBC Linear catalog — engineered through our partnership with Saibo for high load capacity, tight running tolerances, and misalignment-tolerant motion that polymer can't match. Request a sample or talk to an application engineer about your axis.
Get the steel
Sample, datasheet, or engineering call — tell us how to help and we'll route you to the right person.
Why engineers asked for steel
Recirculating-ball steel guides do things polymer rails cannot — and after twenty years of customer requests, they're back in the PBC catalog.
Heavy load capacity
Hardened steel rolling elements carry loads where polymer running surfaces would compress and lose accuracy.
Tight tolerances
Ground-precision rails and preloaded carriages hold position under load and during direction changes — the way machine-tool axes demand.
Misalignment tolerant
Engineered to handle the parallelism and height errors that real-world OEM assemblies introduce — without binding or noise.
Saibo partnership
Manufactured to PBC Linear specs by Saibo, a global precision-rail builder with a decades-long pedigree in heavy-load motion.
Spec sheet
What's coming back to the catalog.
Engineered specifications
Verified performance across load, accuracy, and life.
| Rail material | Hardened bearing steel |
| Rail sizes | [VERIFY] mm (metric profiles) |
| Dynamic load capacity (C) | Up to [VERIFY] kN per carriage |
| Static load capacity (C₀) | Up to [VERIFY] kN per carriage |
| Running parallelism | ±[VERIFY] μm |
| Accuracy classes | Normal / High / Precision / Super-precision |
| Preload classes | Light / Medium / Heavy |
| Lead time | Stocked sizes ship from Roscoe |
Common applications
- Machine-tool axes
- Heavy-load gantries
- Robotic transfer systems
- Material handling
- Industrial automation
- Custom OEM machinery
We've been waiting twenty years for PBC to put steel back in the catalog. The Saibo program runs the loads we couldn't get from polymer.
Steel is back.
Get yours.
Talk to a PBC application engineer about sizing, preload, and lead time on your axis.
Contact me about steel