Roller Pinion Racks
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About our Roller Pinion Racks
The Nexen Roller Pinion System (RPS) revolutionizes linear and rotary motion control possibilities. Giving a fresh face to traditional rack and pinion systems, the RPS overcomes the limitations of conventional drive systems and offers unmatched performance from increased accuracy and efficiency.
The performance of the patented RPS starts with a pinion consisting of bearing-supported rollers that engage a unique tooth profile. Two or more rollers engage the teeth in opposition at all times to eliminate backlash. The pinion rollers glide effortlessly along a tangent path and roll smoothly down the tooth face for quiet, low-friction operation.
Even installation is worry-free, with a simple alignment tool to ensure positional accuracy over multiple rack sections, and is designed for reliable and easy operation, delivering constant positional accuracy regardless of the distance traveled.
Fully customizable, including the finish, the RPS can be designed to meet the specific needs of any application.
Key features include:
- Zero Backlash
- Lube Free Operation
- No Cumulative Error
- High Corrosion Resistance
- 99% Efficient
- Accuracy of ±30μm [ .001 in]
- Rated Life of up to 30 million contacts
- Speeds of up to 8 m/s [26 ft/s]
- Unlimited Length Possible
Resources
Roller Pinon System Technical Data
Roller Pinon System Application Examples:
Roller Pinon System Video(s)
Roller Pinion System Demo
Roller Pinion System
Preloading an Roller Pinon System System
Design World: What is a Rack and Roller Pinion System?
Roller Pinion System Overveiw
Roller Pinon System Rack Installation
Compare Nexen's Racks
|
Premium Rack |
Standard Rack |
 Endurance Rack |
Universal Rack |
Universal Rack Stainless Steel |
|
| Thrust Force | 250 - 26000 N | 1000 - 26000 N | 1000 - 12000 N | 750 - 4500 N | 750 - 4500 N |
| Max Speed | 4 - 8 m/s | 4 - 8 m/s | 4 - 8 m/s | 4 - 8 m/s | 4 - 8 m/s |
| Accuracy | 30 ±μm | 50 ±μm | 80 ±μm | 50 ±μm | 50 ±μm |
| Repeatability | 5 ±μm | 10 ±μm | 20 ±μm | 10 ±μm | 10 ±μm |
| Backlash | 0 | 0 | 0 | 0 | 0 |
| Corrosion Resistance | Hard Chrome | Uncoated Steel | Nitrided | Uncoated Steel | Stainless Steel |
| Lubrication Free Speed | 0.5 – 1 m/s (size dependent) | 0.5 – 1 m/s (size dependent) | 0.5 – 1 m/s (size dependent) | N/A | N/A |
| Noise Level | 75 dB | 75 dB | 75 dB | 75 dB | 75 dB |
| Average Lead Time | 1-2 weeks | 1-2 weeks | 1-2 weeks | 1-2 weeks | 1-6 weeks |
| Price Compared to Premium | 100% | 90% | 80% | 50% | Call (size dependent) |
Required Components and Accessories for our Roller Pinion Racks
Listed below are some of the Required Components and Accessories for Roller Pinion Racks. Use the filters above to find the complete list of Required Components and Accessories on the product page.
Required Components
- Roller Pinions
- Racks
Accessories
- RPS Pinion Preloader
- ISO Pinion Adapter Flanges
- Harmonic Gearhead with Integral Roller Pinion
- Grease
- Rack Alignment Tool
Applications
Nexen's Rack and Pinion System offers an infinite number of design possibilities in applications like:
- Alternative to ball screws and rack & pinion
- Cartesian robots
- Dirty and corrosive environments
- Custom drilling and angular cutting machines
- Food Processing
- Gantry Router
- Non-destructive testing
- Medical imaging
- Measurement systems
- Multi-head on a common axis
- Stainless steel requirements
- Plasma and laser cutting
- Vacuum environments
- Welding and Woodworking
| Industry Problems | Ball Screws | Traditional Rack/Gear & Pinion Systems | Ball Drives | Chain Drives | Linear Motors Direct Rotary Stages Direct Drive Motors |
Nexen Roller Pinion Systems |
| Low Accuracy | X | X | High Position Accuracy | |||
| Backlash / Vibrations | X | X | X | X | Near-Zero Backlash | |
| High Cost | X | X | X | Economical, Efficient Components | ||
| Dirty Operation | X | X | X | X | No Dust Emissions | |
| High Maintenance | X | X | X | X | Little to No Maintenance | |
| Low Load Capacity | X | X | High Load Capacity | |||
| Noisy | X | X | X | X | Quiet: pinion rollers glide smoothly along teeth | |
| Low Speed | X | X | Hi Speeds (up to 11 m/sec) | |||
| Magnetic Field | No magnetic field | |||||
| Hi Wear / Low Life | X | X | X | X | Long Life (up to 36 million meters) | |
| Limited System Length/Size | X | X | X | X | Custom Rack Sizes & Modular Components |
More Information
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Note: The technical data on this website is subject to change without notice. Please contact Nexen for help with your application, appropriate sizing, and configuration.