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Crossed Roller Bearings in Automation Equipment
In automation equipment, positioning repeatability and uptime decide whether a line holds its cycle time. Crossed roller bearings in automation equipment support the rotary indexers, robot joints, and positioning stages that move parts through the process, holding each axis stiff and accurate cycle after cycle. The rollers sit at right angles inside integrated one-piece rings, so a single bearing carries radial load, axial load, and tilting moment without the stack height of a paired arrangement.
These bearings arrive ready to run. Factory-set preload removes internal clearance before the bearing is mounted, so there is no shimming, no running torque check, and no locknut to re-tighten after run-in. That matters on a line where every minute of adjustment is a minute of lost production. Line contact between the rollers and the raceways spreads the load across a wide area, keeping deflection low so the axis lands on the same position every cycle. Available accuracy grades let the axis be matched to the tolerance the process demands.
Yuanhe manufactures crossed roller bearings for rotary indexing tables, robot joints, pick-and-place heads, and linear positioning stages. Our RAU integrated ring construction and factory preload deliver repeatable positioning, simple mounting, and long service life, helping automation builders hold cycle time and reduce the maintenance stops that eat into overall equipment effectiveness.
Yuanhe delivers precision and uptime in automation equipment
- Factory-set preload means no shimming or torque adjustment during assembly, cutting build time
- RAU integrated one-piece rings hold the raceways true, keeping runout low across millions of cycles
- Line contact spreads load across the rollers, so the axis repeats the same position every cycle
- One bearing carries radial load, axial load, and tilting moment, saving stack height in a compact axis
- Accuracy grades from P5 through P2 match the bearing to the process tolerance
- Sealed designs protect the grease through years of continuous shift work without re-greasing
Bearing Requirements by Automation Axis
| Axis | Motion | Bearing Requirement |
|---|---|---|
| Rotary indexing table | Step and hold | Repeatable angular position under part load |
| Robot joint | Rotate and tilt | Moment stiffness over the full arm reach |
| Pick-and-place head | Fast reversal | Zero backlash so the head does not drift on direction change |
| Linear positioning stage | Straight travel | Straight, repeatable motion with no play |
Each of these axes positions a part rather than simply spinning a shaft, which is what a crossed roller bearing is built for. Where the machine drives a conveyor roller or a motor shaft, standard deep groove ball bearings run faster and cost less. Mounting is straightforward on both: seat the bearing square and torque the bolts evenly, as covered in our installation guide.
Contact us now to know more about how we can serve your industry.