Roller Pinion System for Linear Motion Control
Nexen offers an advanced new technology that revolutionizes linear motion. The Roller Pinion System (RPS) provides zero backlash, very high positional accuracy, unlimited length, very high speeds, 99% efficiency, high rigidity, low noise, low maintenance, corrosion resistance, and long life. This opens up new design possibilities and provides the capability to achieve much higher levels of performance in machine designs.
The RPS’s unique design eliminates many of the limitations of current linear drive systems like:
Ball Screws: Limited by critical speed, maximum speed, cumulative error, vibration, thermal expansion, supplemental cooling, noise, low efficiency, maintenance, and life.
Traditional Rack and Pinion: Limited by low accuracy and speed, backlash, tooth fatigue, noise, high cost of dual and split pinion systems, high maintenance, and short life.
Belt Drives: Limited by low accuracy, backlash, low load capacity, short lengths, belt stretch, and low rigidity.
Linear Motors: Limited by low load capacity, high cost, strong magnetic fields, and liquid cooling. |
Zero Backlash /
High Precision
The RPS’s innovative meshing action provides backlash of less than 3.2 um [0.00013 in.] and due to the extremely precise manufacturing process provides positional accuracy up to ± 20 um[± 0.00079 in.]. Each tooth profile is precisely measured relative to the first to ensure that high positional accuracy is maintained and cumulative error is eliminated.
High Speed Capability
The RPS system can achieve speeds, up to 11 m/sec (36.1 ft/sec), that can normally only be obtained by linear motors while providing high positional accuracy. Ball screws speed capabilities are much lower and diminish with length.
Unlimited Travel Length
The RPS system is modular in design with 1 meter and 1/2 meter segments that can be combined as needed to meet your application requirements. Segments can also be cut to shorter lengths as needed. This greatly improves stocking, availability, cost, and replaceability. Segments are joined with a special tool that uses the rack teeth to transfer the positional accuracy of the previous rack to the next. |
Demonstration of RPS in Action
Applications
- Gantry Systems
- Machine Tools
- Material Handling
- Transfer Equipment
- Robotics
- Inspection Equipment
- Packaging Machinery
- Food Processing
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